Modern technologies make it possible to lay cables without the need to develop trenches and remove soil. Using the HDD method and special equipment, it is possible to create a well for a communication device with a diameter of up to 550 mm and a length of up to 50 m. It is used if it is necessary to lay a cable in a steel case under natural and artificial obstacles, regardless of their location.
To carry out drilling, there is no need to tear up pits or pits, since the soil is developed from the surface of the site. The process is carried out by a working tool, which initially drills the ground vertically, and when it reaches the planned mark, it is replaced with a horizontal position in accordance with a given trajectory. An HDD rig is installed at the construction site, equipped with rods and a drilling head, with the help of which a pilot hole is initially created. If it is necessary to increase its diameter, an expander is attached and pulled in reverse to its original position, breaking the soil and compacting it to the sides. The process is accompanied by the supply of a bentonite solution designed to fill empty spaces and eliminate the risk of soil collapse. A steel case is placed into the tunnel created and expanded to the required diameter, through which the working cable is passed.
You can lay communications underground using the trenchless method using another method - horizontally directed puncture. It is used for installing pipelines with a diameter of no more than 70 cm. To carry it out, it is necessary to prepare the starting and finishing pits, one on both sides of the object, under which a trenchless hole will be created. The equipment is placed in the starting one and the supporting wall is prepared.
Advantages of soil puncture compared to other methods:
- shorter order completion times;
- due to the main number of mechanized stages, less physical strength is required;
- lack of measures to restore the working area and the structures located on it for the reason that the puncture method is able to “bypass” all obstacles;
- access to work throughout the year.
The advantages also include the ability to lay pipelines made of any materials. The HDD method is becoming more popular every day, and in some countries the trenching of engineering systems is already completely prohibited.
The first stage of trenchless technology is to perform a pilot hole to create a horizontal well, which is later developed to the required diameter. At this point, the risks of geological destruction of the rock located above the pipe are eliminated. Afterwards the pipe is pressed down, while the pilot rod remains in the developed hole. Using a drilling rig, the soil is drilled out with the simultaneous removal of waste soil through a system of augers. As a result, the soil is removed from the product being laid and remains in a compacted state around it, allowing for the safe construction of underground communications.
If work is carried out in hard soils or pipes of large diameters are laid, then soil washing with a bentonite solution is used, which makes it easier to compact the earth around the work product.
Purpose of power drives
- Rotators are a unit and mechanism designed to rotate and feed a working tool.
- In the process of rotary drilling, mud pumps are used to regulate the optimal temperature of the tool that destroys rocks, as well as to clean the face of accumulated slurry.
- Lowering, extending and lifting columns for drilling is carried out using winches, towers, masts, traveling blocks, and pipe valves.
In addition to the drilling process, well construction consists of preparing the work site, transporting HDD equipment and related tools, installation and dismantling operations. Equipment for HDD can be stationary, mobile or self-propelled.
Stationary equipment is not equipped with its own base for transportation and is moved using other land or air transport. But it is designed in such a way that the process of delivery to the work site and back is carried out most conveniently, therefore it is made in the form of a collapsible structure that does not require special complex adjustments for full assembly, and also labor-intensive installation and dismantling is performed.
Mobile units have their own transport base. They are transported to the construction site using wheels, sleds or caterpillar tracks, and delivery by watercraft is also possible. The movement is carried out by the structure or several of its blocks. The greater their number, the number of installation and dismantling processes increases accordingly.
Self-propelled units are equipped with wheels or tracks, which completely reduces the time for transportation and preparatory work, which is especially valuable if short-term drilling is to be carried out.
Composition of drilling equipment
There are four classes of HDD drilling rigs, each of which has a specific traction force. When choosing a class, engineering and geological conditions, type, length and diameter of the pipeline are taken into account. Self-propelled units are mounted on a tracked or wheeled chassis, the modular design is mounted on a support frame.
The equipment includes units and devices for preparing, supplying and regenerating drilling fluid. A prefabricated column of rods serves to transmit rotating or traction forces from installation and supply of solution. In case of complex geology of the soil or a large length and diameter of the pipeline, a traction amplifier is installed on the installation, and a pusher is placed at the exit point.
Crawler drilling rig with a set of rods
A pilot well is drilled with chisels or a carbide drill, or a universal drill with replaceable attachments is used. The well is enlarged with reamers with high-strength cutting edges and rock-breaking attachments. The tool is selected taking into account the properties of the soil. To increase productivity when breaking rocks, a downhole motor is used.
A locating system for monitoring the position of a drilling tool includes a emitting probe, a locator for receiving a signal and a display for displaying information. In the presence of strong interference, the signal from the probe is transmitted to the display via a cable.
Uses of bentonite
The pilot hole is expanded by a drilling rig using a puncture method, thereby laying pipes for transporting various substances. If drilling installations are used, then the process is accompanied by the introduction of a bentonite solution into the developed well through a flushing head. It is important that it does not exit through the inlet and outlet openings into the pits.
The use of a new portion of bentonite solution is permissible only after the previous one has been completely used up.
Microtunneling
The microtunneling machine is equipped with a drive located in the drilling head and cutting ring. To start the auger, a pressing station is used, fixed in the starting pit. A transport nozzle is placed in the working pipe, with the help of which drilling material is pumped into the starting pit, thereby preventing damage to the product being laid. The system is controlled by a target and a laser beam, so that for every 100 m of penetration, the deviation from the specified trajectory does not exceed 3 cm.
Development of a pilot well
A controlled head, on which there are special holes for supplying mortar, is pressed into the ground. Thanks to the probe built into the head, a signal about its movement is transmitted, and the operator can control it by changing its trajectory. After its exit in the receiving pit, it is replaced by an expander and a swivel, in which there are holes for supplying bentonite solution. When sinking is carried out in several stages, the pipe being laid is attached to the swivel, after which the prefabricated structure is tightened in the opposite direction. At this moment, a large volume of bentonite solution is supplied, pushing the soil along the workpiece. With this method it is impossible to carry out penetration exactly with a given trajectory, so it is not used when laying gravity pipelines, however, it can be used to successfully lay communication lines and pressure pipelines.
Soil punching method
Laying pipelines using the trenchless method also involves using the soil punching method. This option is more effective when laying large-diameter steel pipes, up to two meters. The process is similar to the piercing method, but the piercing is done with the open end. The resulting soil is removed.
The required degree of force for pushing is created by hydraulic jacks installed around the entire circumference of the pipe. Work of this type can be carried out on soil with a high content of clay, loam and sand. The optimal diameter of the pipes used can range from 60 cm to 172 cm. Pipelines can be laid by pushing soil in areas no more than 100 meters wide. This method is often used to lay a pipe in a ditch for a drive-in, as this is a fairly effective method.
Soil punching is performed as follows:
- First you need to dig a pit.
- Then a thrust wall is installed on which the jacks are attached.
- Connect one end of the pipe and jacks located on the wall. The other end remains open.
- The forces created by the jacks are transferred to the pipe, its free end is pressed into the soil layer.
- The movement of the part in the ground leads to the formation of an earthen column inside. It is removed using shovels with long and short handles, as well as using pneumatic impact devices.
HDD
Using a trenchless transition device, pipes made of various materials are laid. The advantages of the HDD method are the preservation of the landscape, while spot digging of pits or installation of a small utility room is carried out. There is also no need to block transport routes, dismantle structures located on the work site, or destroy green spaces.
Initially, a geological study of the soil and the territory as a whole is carried out for the presence of located underground and above-ground obstacles, after which the selection of equipment with which the drilling will be carried out is made.
The next step is to carry out pilot drilling, as a result of which the working rod forms a hole in the ground.
The third stage is the expansion of the developed hole to the required diameter in accordance with the pipe being laid, or the process of pressing the working pipe in the direction of the pilot well.
The drilling method is one of the most advanced construction technologies, with the help of which new pipelines are laid or old pipelines are repaired/replaced. For this purpose, a pilot well is developed, after which it is expanded to a given diameter and filled with bentonite solution. The pipe is pulled from the opposite end using the method of fastening to a rod and reverse penetration, or it is pressed into place from the starting pit.
Trenchless technology is in demand due to a large number of positive features: electrical installation work is carried out without destroying the landscape and road surface, pipes are stretched under any buildings, rails, parks, lakes, etc.
Laying cables using horizontal directional drilling
When working using the HDD method, there is no need for road repair work after completion of the work. The entire procedure assumes the safety of engineering communications with a non-overlapping transport highway.
This indicates the economic benefits of trenchless laying of communications for the drilling plan; no additional equipment is required for this.
The horizontal directional HDD drilling technique involves the following types of procedures:
- Utility network (connection lines, electrical network, wires), puncture method during installation, cable is laid under the ground.
- a gas pipeline is being laid (working gas pipeline),
- water supply and sewerage are being laid, and a project is being drawn up for this.
Bentonite
To increase productivity and maximize the efficiency of the horizontal drilling process, a bentonite solution is used as a support and lubricant. If work is carried out on coarse-grained or washed-out soils, then bentonite is used to fix the pipe in the desired position. During the process of pressing or drilling a hole, bentonite solution is used as a lubricant, simplifying the passage of the working tool or pushing the pipeline segment being laid.
The flow rate depends on the proportion of bentonite. This makes it possible to produce a suspension intended to support the product being laid or a solution that acts as a lubricant.
If the pipe is immersed entirely in bentonite, then it begins to act with a buoyant force due to the air contained in the work product. This ensures a reduction in friction between the pipe walls and the soil during the pressing process.
The pipeline can be laid using the HDD method into existing lines or a new hole can be developed. The first method is carried out using a hydraulic calibrator, designed to free up space, as a result of which it is possible to install a new pipe.
The hole is developed if there are no lines prepared earlier or if they are in an emergency condition, in which it is impractical to carry out repair work.
The pipeline is laid using the HDD method, designed to create routes no more than 10 meters long. An obstacle may be groundwater that erodes the soil. However, in this case, there is a solution: lay the pipes by placing them in cases.
The pilot rod creates a hole and exits through the receiving pit. Sections of the pipeline being laid, the diameter of which is no more than 300 mm, are welded to it. A rotating auger is installed inside the pipe, with the help of which the waste soil is removed and brought into the starting pit, from where it is removed by grab equipment. A welding machine is used to connect pipeline sections.
Important points when drilling
When drilling a well, you need to take into account such a factor as soil shedding. Both plastic and steel pipes can be pulled into the channel
It is only important to take into account one criterion: plastic can be laid under a bend, for example, when punctured under a reservoir, and metal pipelines must be laid only in an exclusively horizontal direction
When pulling pipes into a well, they should be connected. Moreover, the connection must be as reliable as possible, otherwise problems with the sewage system cannot be avoided later. Docking with the annular expander rods is performed with the equipment turned off. Through a swivel that rotates, communications are connected. Special adapters are used for joining.
If the pressure in the channel is high, then the bentonite solution is distributed evenly, thereby filling the space between the outer walls of the pipes and the inside of the channel. After the solution hardens, the possibility of soil subsidence is completely eliminated.
Puncture device
A pipe made of steel, with its open edge, is pressed into the soil using a trenchless method, thanks to which new communications are built or old pipelines are repaired. A special installation is used to press the pipe. At the open end, the earth is filled with a “pillar”, and then it is removed from the face.
The compact design of the drilling rig includes a frame equipped with hydraulic cylinders in a number depending on the type of soil and difficulties that may arise in the process. The drive is one of the engines, which is started in the presence of electricity, diesel or gasoline. Suitable for the construction of utility networks for any purpose under railway crossings, highways and densely built-up areas. The uniqueness lies in the fact that there is no need to dig trenches, as a result of which the execution time is reduced and the integrity of the buildings located on the work site is preserved.
How to dispose of waste soil
For soil disposal, a special classification has been developed, according to which it is divided into five categories. High-risk soil is intended exclusively for removal to landfills specializing in the disposal of toxic waste.
If a construction company intends to use waste land in the future, it is necessary to conduct laboratory tests, and if hazardous substances are not identified, it will be available for use.
When constructing a building, the site is initially marked out, after which ground work begins. Before you begin, you should decide on the depth of the pits being developed, because this determines how much earth needs to be removed. If a building is being erected without a basement, then it is quite possible to carry out excavation work manually, which will save the budget. If it is necessary to construct a basement floor, the process is only possible with special equipment. However, regardless of the method of work, in any case it is necessary to strengthen the walls of the pits.
To more effectively extract earth from pits, the top layer, about 50 cm high, is placed separately from the subsequent ones, as it is suitable for gardening and landscape work.
Strengthening pits is the main task in the process of developing and removing soil from them. It is made using shields made of boards, which are fixed on a common plank and installed at the bottom of the pit. You can also strengthen the walls and base of the pit using bentonite solution, but the method is carried out with special equipment.
In the process of installing new communications for various purposes and connecting them to a common engineering network, sometimes an obstacle arises such as transport routes.
In this case, it is advisable to carry out a trenchless transition using HDD technology or to carry out a puncture under the railway tracks, which makes it possible to lay the pipeline under the transport routes, without the need to open the roadway or block the movement of vehicles.
Advantages of using trenchless electrical cable installation
Thanks to trenchless cable laying, it is possible to maintain the integrity of the landscape (which is of no small importance when carrying out work in urban areas). GNB-Stroy uses modern technology for trenchless laying of electrical cables due to the fact that when using it:
— there is a significant reduction in costs and estimated costs in general;
- the service life of the cable is significantly increased; - trench laying of the electrical cable thanks to it is fast, durable and at an affordable price.
Where is the puncture method used?
In any situations where damage may be caused to the environment, buildings and structures at the work site, vehicle traffic, etc., as well as in cases where the use of the open method is prohibited or simply impossible to implement, then it is advisable to lay pipelines using the trenchless puncture method. However, it can be used if the pipeline string or one pipe intended for installation has a diameter of no more than eight meters.
HDD is a dangerous method, therefore a number of requirements are established for the accuracy of calculations and drilling, safety precautions, studying the characteristics of soils and preventing their settlement. Work can begin only after there is a permit from the Russian Railways administration, which is responsible for a specific section of the tracks.
What are the advantages of the puncture method?
During a trenchless transition, special steel cases are used, which are pushed by a pump-jacking unit into the developed well with translational movements, due to which the soil does not crumble.
Advantages compared to other methods:
- Lower price.
- Reduced work time.
- No additional arrangement of the work area is required.
- Groundwater does not affect the process, so there is no need to dewater when installing a utility network using the puncture method.
- Upon completion of the work, there is no need to restore the surface or recreate the paths.
Work on and under railway tracks is complex and dangerous and is therefore carried out exclusively by qualified specialists. To use the HDD installation, it is necessary to prepare the site for its placement.
If it is necessary to carry out work in rocky or hard soils and to place large-diameter communications, then the trenchless drilling method is used.
Safety regulations during HDD drilling are developed to ensure the protection of the health and lives of members of the working team, and to reduce the risk of breakdown of the equipment used.
Persons at least 18 years of age are allowed to work with drilling rigs. Before starting construction work, they must undergo a medical examination, followed by instruction, and then confirm their knowledge and skills in an exam.
Before using any equipment, each worker must thoroughly study the instructions provided by the supplier and ultimately comply with the operating conditions. The installations and work site are kept in a condition that satisfies the instructions. No strangers are allowed on the work site.
During breaks between work processes, builders are prohibited from settling on the ground or in grass, bushes - areas located near the operation of drilling rigs. The staff must have a specially designated and equipped room that meets hygienic standards, in which they can dry their clothes, take a lunch break, and rest if necessary. It is imperative to have a first aid kit containing all the necessary medications to be able to immediately provide first aid.
Road puncture within the city
In urban locations, the described method of installing communications is used, first of all, for laying local sections of gas pipelines, water pipes and electrical networks. The above method is suitable for laying PVC pipes underground. Intense pedestrian and ground transport traffic requires the installation of communications under the road using a trenchless method. HDD does not violate the integrity of the hard road surface; To use the equipment, you do not need to obtain additional permits from technical supervision services. But it is necessary to coordinate excavation work with these services.
Completion of work
After the drilling work is completed:
- The drilling rig and all its elements are inspected, contamination is removed, and the cable and hose are disconnected.
- If bentonite solution remains, it must be drained and then the tanks must be washed. Remove from the pit before backfilling with soil. The remaining solution is transported to special sites where it is disposed of.
- Work areas are leveled and measures are taken to restore landscaping. Fencing partitions and special signs are dismantled, and garbage is removed.
HDD technology is the construction of pipelines underground without surface development, which prevents disruption of the site’s landscape, the integrity of the asphalt pavement, the destruction of green spaces, etc. The method is implemented in various ways depending on the type of utility network, its technical characteristics and geological conditions of the area.
Restoration of old networks is called sanitation, and is carried out to repair or replace a fragment of a pipe laid previously. Can be done in one of the following ways.
In the first of them, the old fragment is preserved and serves as a protective case for the new pipe. It is first cleaned of debris, after which a communication of smaller diameter is placed in it. The area being repaired is disconnected from the general system.
Relining involves repairing old communications by laying new pipes through them. Renovation consists of replacing the pipeline with a new one, while the old communication is destroyed and it is possible to lay a new product of any diameter in accordance with the size of the hole.
The puncture method is intended for excavation work mainly in clay and loamy soils. The development of a well using a HDD installation is necessary for the installation of utility networks, the diameter of which does not exceed 600 mm, the length of penetration is no more than 60 m. The introduction of a working tool is accompanied by compaction of the soil. A hydraulic jack is used to carry out a puncture.
Reducing friction and soil resistance on the pipe being laid is achieved by using a cone-shaped tip protruding several centimeters in relation to the pipe itself. If the work piece has a small diameter, then it is not necessary to use such a tip - the puncture method is carried out using a laid communication.
The method of creating a well by punching is mainly used for installing communications made of steel, the diameter of which does not exceed 2000 mm. Punching is similar to the puncture method, however, the difference is that it is carried out with the open end of the pipe, after which the accumulated soil is removed from it. Sufficient force is created by hydraulic jacks, which are installed symmetrically along the entire diameter of the product being laid. It is used for the installation of pipelines with a diameter of 600 to 1700 mm, with a length of no more than 100 m.
First of all, the pits are prepared. At the starting point, a support wall is installed to which the jacking equipment is attached. One edge of the pipe being laid is connected to jacks. The second end begins the pressing process.
The construction of underground communications is carried out by horizontal drilling using a drilling rig. A pilot well is being developed. The sharp tip is replaced by an expander, with the help of which the hole expands to the required diameter. The working tool has small holes through which bentonite solution is supplied. It is used to cool the expander, improve its penetration and compact the soil. Also, the pipe being laid can be placed in a bentonite suspension, due to which it will be fixed in one position. The pipeline string is attached to the rod and pulled in reverse through the developed well.
Bentonite is used to facilitate the process of horizontal drilling in hard soils, as well as as a support or lubricant. When laying in coarse-grained or washed-out soil, bentonite mixtures are able to support and fix the pipe. Bentonite is used during pipeline pressing and during trenchless drilling as a lubricant to ensure better drill head permeability, as well as to push the pipe.
It is important to understand for what purpose bentonite is used; because of this, the yield strength will differ, depending on its concentration in the mixture. Since it can be used as a support or as a lubricant, it is necessary to know what proportions are correct. The proportions of bentonite differ depending on the average grain size in the soil.
Immersion of the pipeline in bentonite solution
When drilling a pipe filled with air and immersed in a bentonite solution, a buoyant reaction can often be observed, the strength of which depends on the material of the pipeline. Thanks to this phenomenon, the friction of the outer walls of the pipe during the pressing process is reduced. It is important to correctly determine the required concentration of bentonite and pump it evenly, since the result of horizontal trenchless drilling may depend on this. The quality of the bentonite suspension also affects the depth and number of deformations of the pipe, which will subsequently affect its service life.
Unused bentonite solution is strictly prohibited from being left on the construction site. It is necessary to suck it out using suction pumps (sewage disposal units), followed by draining it to places designated for the disposal of liquid materials.
Bentonite slurry can also be disposed of using an innovative method based on an absorbent polymer, which reduces the volume by up to half. The application is aimed at the transition of the liquid state of bentonite into a solid state, after which it is suitable for backfilling pits, or loading with an excavator and transporting from the work site. The technology is safe for the environment.
The recycling process is carried out using a special installation, the small dimensions of which allow it to be easily transported to the work site.
Depending on the design, a submersible pump can be one of the types - a rod or rodless unit. The first type is equipped with a system of rods that rotate from equipment installed underground or on the surface. The design of the rotating mechanism is a housing with an installed hydraulic pumping product, thanks to which the work is carried out efficiently and as productively as possible.
In rodless submersible pumps, the rotating mechanism is located next to the hydraulic pumping part in the same housing. The design gets the job done efficiently and is the most productive among submersible pumps. The rodless design is often used for fecal and drainage pumping.
Submersible pumps are used in various fields and are indispensable for carrying out certain activities, for example, with their help it is easy to pump fecal liquids, liquefied gases, dispose of sludge, and pumping equipment is also used for installing water supply systems in private homes, water disposal in drainage systems, controlled irrigation, reduction waters on oil lakes.
When submersible pumps and rainwater installations work together, an ideal complex is obtained for use in agricultural land.
Small pumping systems based on submersible mud pumps are used to pump out flooded basements, eliminate water due to rising rivers and spring floods, and also use them to eliminate spills on personal plots.
Characteristics
Submersible industrial and slurry pumps are capable of pumping liquids consisting of up to 61% solid inclusions, with a fraction of at least 1 cm. The units have different capacities, can be very compact for private work, as well as industrial ones, capable of performing a large amount of work. Some of them are placed on travel trailers. The drives of the units are powered by electric current and diesel stations provided along with the submersible pump.
Submersible mud pumps are used to pump large volumes of liquids containing solids. The systems are also used for pumping liquid feces.
Efficient use and maximum performance of the bypass pump throughout the entire operating period can be ensured by regular, timely technical inspection and appropriate maintenance.
Any pumping installation must be inspected and serviced after every 250 operating hours. The minimum that needs to be done is to change the oil and filter, and if you ignore this, a breakdown may occur right on the construction site. As soon as one operating cycle is completed, the mechanical seal, connecting elements and their reliability, with which the motor, pump and reed valve are connected, are checked. The level and quality of the oil in the mechanical seal is checked, and its surfaces are lubricated with copper grease, thereby preventing premature wear.
On mobile pumps, the motor and fastening elements are first checked. If they are misaligned relative to each other, the bearings may wear out before the time specified by the manufacturer.
Then the bearings are inspected and the degree of their heating is checked - under normal conditions overheating should not occur. Proper performance depends on checking clearances in the design: impeller, wear ring, wear plate. They must not deviate from the norm, otherwise the circulation of water will be disrupted and the pump will not cope with the given volumes and pressure of the liquid, as a result, water will not be able to pass through the hole and ensure the functioning of the impeller.
Every 250 working hours a vacuum test is carried out, during which it is subjected to vacuum pressure at a pressure of 24 d.r. With. If the pump fails the test, it means that it has insufficient suction power, therefore, it is necessary to carry out a full inspection and repair damage. Otherwise, you will have to work with less water, increasing fuel consumption and time.
Also, to determine the efficiency of the bypass pump, dynamic testing is carried out, which consists of testing the equipment for three hours in a mode corresponding to the design conditions. A positive result is functioning in accordance with the design curve. And also, with the help of testing, it becomes possible to assess the condition of the fuel and eliminate leaks and radiator leaks. To determine whether the equipment can operate with the same performance in winter and summer, it is started and operated for two hours under the influence of extreme temperatures.
There should be no foreign objects in the supply system or inside the equipment, such as paper, rags, small parts, etc. If blockages occur, a vacuum will not be created, and this can be determined using sensors that indicate a problem. It is also necessary to monitor the float indicators and prevent them from entering the pump, which happens due to the accumulation of construction debris on the product.
As progressive cities develop more and more every day, there is a need to construct new buildings that will serve as office space or residential complexes. But due to such rapid growth, it is becoming increasingly difficult to lay new or replace old communications. Digging trenches does not give the desired results, since after using this method, highways, walkways and landscape at the construction site are damaged. In order to avoid such consequences, utility networks should be laid using trenchless technology and special equipment.
How to make a puncture yourself
In domestic conditions, if it is necessary to lay an underground water supply or small-diameter gas line into a house over a short distance, industrial penetration techniques can be used.
One of the effective types is hydropuncture of a hole in the ground; to carry out the following work proceed as follows:
- Take metal pipes of the required diameter of 1 m (a large pipe length will require too large a work area) for the entire length of the hole and cut threads on them from one end, and weld couplings with internal threads of the same cross-section and pitch to the other.
- To supply water, a submersible or surface electric pump is used using an adapter coupling, one end of which is attached to the pipe end, and the output pipe of the pump unit is connected to the other.
- Dig a hole in the ground of the required depth and length, allowing you to conveniently place a steel meter of pipe in it for pushing.
Rice. 8 Do-it-yourself hydraulic piercing - equipment
- They calculate the well's trajectory in advance, connect the pipe to an electric pump, supply water and begin to push it into the ground, controlling the direction and vertical deviation using the building level.
- After deepening the first pipe, turn off the electric pump, disconnect its pipe and screw the second pipe onto the thread, connecting the electric pump from the other end and supplying water to it.
- The operation is repeated periodically until the channel is completely passed to the required length; upon completion of the work, the pipeline is removed and dismantled.
- A HDPE water pipe is inserted into the canal, taken to the desired location, and the work is considered complete.
To vertically lay a shaft in a house, a homemade drill is used, the length of which also depends on the depth of the line; it is turned using a drill or hammer drill.
Homemade drilling devices can also be used for horizontal drilling at home, while the drill is rotated using a power tool, lengthening it with metal rods with a threaded connection.
Rice. 9 DIY horizontal drilling
Trenchless pipeline laying is an effective method for solving problems in cases where digging trenches is impossible or economically infeasible. When carrying out work, a wide range of industrial methods are used using special equipment; some technologies can be successfully used in everyday life.
