Pull-type pipe jacking system and pull-type pipe jacking construction method

Abstract

The invention provides a pull-type pipe jacking system and a pull-type pipe jacking construction method, and relates to the field of pipe jacking construction. The traction type pipe jacking system comprises a pipe jacking device, a traction device, a drill rod and a cable, the pipe jacking device is used for being placed in a working well, and the traction device is used for being placed in a receiving well. The end, close to the working well, of the drill rod is connected with the pipe jacking device, the end, close to the receiving well, of the drill rod is connected with the traction device, the traction device can guide the movement direction of the pipe jacking device through the drill rod, and therefore the direction of the pipe jacking device advancing towards the receiving well is more accurate. The cable is arranged in the drill rod and electrically connected with the pipe jacking device, and the cable is used for providing a power source for the pipe jacking device to drive the pipe jacking device to move, so that the cable does not need to be arranged in a pipe joint of the pipe jacking device, the cable is prevented from occupying part of the internal space of the pipe joint, and then soil discharging and propelling of the pipe jacking device are prevented from being affected; the discharge amount of the soil body is further reduced, the construction efficiency is improved, and meanwhile, the method is more environment-friendly.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking construction, and particularly to a traction-type pipe jacking system and a traction-type pipe jacking construction method. Background Technology

[0002] Pipe jacking is a common construction technique in underground pipeline engineering, and micro-pipe jacking is frequently used in some large-scale pipe jacking projects. Traditional pipe jacking requires a jacking machine head at the front and a jacking device at the rear, with intermediate pipe sections that can be reinforced concrete or steel pipe sections. The guidance of these jacking sections is entirely determined by the jacking machine head and the jacking device at the rear, making directional control very difficult.

[0003] One of the critical issues in pipe jacking and micro-pipe jacking construction is maintaining their directionality to avoid collisions between adjacent pipes. In pipe jacking projects, multiple large steel pipes are arranged side-by-side; if one is misaligned, the joint will inevitably widen, significantly impacting later construction. Furthermore, misalignment of adjacent pipes greatly affects their construction, sometimes necessitating adjustments in their displacement. Since pipe jacking is composed of multiple steel pipes, a suitable distance must be maintained between adjacent pipes during the jacking process. If the distance is too great, the structural requirements of the pipe jacking will not be met; if they are too close, serious collisions may occur. Therefore, maintaining the correct direction of advancement for each pipe in pipe jacking construction is crucial.

[0004] Furthermore, conventional pipe jacking relies on the space within the rear pipe jacking channel for both power arrangement and soil removal. For small-section pipe jacking and micro-jacking, the narrow internal space negatively impacts both power arrangement and soil removal, severely affecting construction efficiency. If soil removal involves converting the soil into slurry, it will generate a large amount of waste slurry and debris, which is detrimental to environmental protection. Therefore, developing pipe jacking technologies that minimize or eliminate soil removal and waste slurry is also crucial. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, such as difficulty in maintaining directionality during pipe jacking construction, excessive generation of slag and waste mud, and the fact that the cable of the pipe jacking device is set inside the pipe section, which affects the advancement efficiency of the pipe jacking device. The present invention provides a traction-type pipe jacking system and a traction-type pipe jacking construction method.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides a traction-type pipe jacking system, which includes a pipe jacking device, a traction device, a drill pipe, and a cable. The pipe jacking device includes a pipe jacking head and multiple pipe sections, which are sequentially connected to the pipe jacking head. The pipe jacking device is used to be placed in the working shaft, and the traction device is used to be placed in the receiving shaft.

[0008] The end of the drill pipe near the working well is connected to the pipe jacking device, and the end of the drill pipe near the receiving well is connected to the traction device. The traction device can guide the movement direction of the pipe jacking device through the drill pipe.

[0009] The cable is located inside the drill pipe and is electrically connected to the pipe jacking device. The cable is used to provide power to the pipe jacking device to drive its movement.

[0010] In this scheme, the traction-type pipe jacking system places a pipe jacking device in the working shaft and a traction device in the receiving shaft. The end of the drill rod near the working shaft is connected to the pipe jacking device, and the end near the receiving shaft is connected to the traction device. The traction device guides the movement direction of the pipe jacking device through the drill rod, thus making the direction of the pipe jacking device more accurate as it advances towards the receiving shaft, avoiding directional deviation during pipe jacking construction, and ensuring the directionality of the laid pipeline. The pipe jacking device includes a pipe jacking head and multiple pipe sections, which are sequentially connected to the pipe jacking head. As the pipe jacking head advances towards the receiving shaft, it drives the multiple pipe sections connected to it forward. Most of the soil excavated by the pipe jacking head is directly deposited into the pipe sections, thereby reducing the amount of construction waste and benefiting environmental protection. By placing the cable inside the drill pipe and electrically connecting it to the pipe jacking device, the cable provides power to the pipe jacking device to drive it towards the receiving well. This eliminates the need to place the cable inside the pipe section of the pipe jacking device, avoiding the cable occupying part of the internal space of the pipe section, thus avoiding affecting the soil removal and advancement of the pipe jacking device, further reducing the amount of soil discharged, and also avoiding the cable affecting the advancement of the pipe jacking device, making it easier to advance the pipe jacking device, improving construction efficiency, and making it easier to remove the cable after the pipe jacking construction is completed.

[0011] Preferably, the traction-type pipe jacking system further includes a lubrication device connected to the pipe jacking device and communicating with the interior of the drill pipe, the interior of the drill pipe being used to fill with lubricating fluid.

[0012] In this scheme, lubricating fluid is filled into the hollow space inside the drill pipe. The lubricating fluid flows into the lubrication device through this space, thus lubricating the pipe jacking device, reducing resistance to pipe jacking, and simplifying the pipe advancing process. By introducing the lubricating fluid into the lubrication device through the inside of the drill pipe, there is no need to place the lubrication device's input pipe on one side of the pipe section, avoiding the occupation of internal space and thus preventing interference with soil removal and advancement. This further reduces the amount of soil discharged and prevents the lubrication device's input pipe from affecting the pipe jacking device's advancement.

[0013] Preferably, the lubrication device includes a connecting pipe and a nozzle, the connecting pipe connecting the interior of the drill pipe and the nozzle, and the nozzle spraying in the direction of the nozzle toward the inner wall of the jacking device.

[0014] In this scheme, lubricating fluid flows from the inside of the drill pipe into the connecting pipe, and then into the nozzle. By setting the spray direction of the nozzle towards the inner wall of the pipe jacking device, it is easier to lubricate the inner wall of the pipe jacking device, reduce the friction between the soil and the inner wall of the pipe jacking device, reduce the resistance of pipeline laying, and improve the efficiency of pipe jacking construction.

[0015] Preferably, the connecting pipe includes a central pipe and a plurality of slurry pipes, the central pipe extending along the axial direction of the jacking device, at least a portion of the slurry pipes extending along the circumferential direction of the jacking device, and at least a portion of the slurry pipes being in contact with the inner wall of the jacking device;

[0016] The central pipe connects the interior of the drill pipe and the slurry pipe, the slurry pipe connects to the nozzle, and a plurality of nozzles are spaced apart on the slurry pipe along the circumferential direction of the jacking device.

[0017] In this design, the connecting pipe includes a central pipe and multiple slurry pipes. By extending the central pipe along the axial direction of the jacking device, it is easier for lubricant to flow from the inside of the drill pipe to the jacking device. At least a portion of the slurry pipes extend along the radial circumferential direction of the jacking device, and at least a portion of the slurry pipes are in contact with the inner wall of the jacking device. This allows the lubricant to be evenly distributed in the circumferential direction of the jacking device through the slurry pipes, and also avoids interference between the slurry pipes and the internal structure of the jacking device. Multiple nozzles are spaced apart on the slurry pipes along the circumferential direction of the jacking device, so that the multiple nozzles can spray lubricant more evenly in the circumferential direction of the jacking device, resulting in better lubrication.

[0018] Preferably, the pipe jacking device has a motor and multiple impellers at one end near the drill rod, the motor is electrically connected to the cable, and the multiple impellers are respectively located on both sides of the motor in the axial direction of the pipe jacking device.

[0019] In this scheme, the pipe jacking device is equipped with a motor and multiple impellers at one end near the drill rod. The motor drives the impellers to rotate, thereby propelling the pipe jacking device forward. In the axial direction of the pipe jacking device, multiple impellers are respectively located on both sides of the motor. By setting multiple impellers, the propulsion power is increased, and the efficiency of pipeline laying is improved.

[0020] Preferably, the drill rod is connected to the center of the pipe jacking head.

[0021] In this scheme, by connecting the drill rod to the center of the pipe jacking machine head, it is easier for the drill rod to pull the pipe jacking machine head, which in turn makes the forward direction of the pipe section more accurate.

[0022] The present invention also provides a traction-type pipe jacking construction method, wherein the traction-type pipe jacking construction method uses the aforementioned traction-type pipe jacking system, and the traction-type pipe jacking construction method includes the following steps:

[0023] Step S1: Place a horizontal drilling rig in the working well. The horizontal drilling rig drills a hole toward the receiving well through a drill rod so that one end of the drill rod reaches the receiving well.

[0024] Step S2: Leave the drill rod in the borehole formed by the horizontal drilling machine;

[0025] Step S3: Place the pipe jacking device in the working well, place the traction device in the receiving well, connect the end of the drill rod near the working well to the pipe jacking device, and connect the end of the drill rod near the receiving well to the traction device.

[0026] Step S4: The pipe jacking device starts moving toward the receiving well. The traction device can guide the movement direction of the pipe jacking device through the drill pipe until one end of the pipe jacking device enters the receiving well.

[0027] Step S5: Complete the pipeline laying.

[0028] In this scheme, the traction-type pipe jacking construction method first places a horizontal drilling rig in the working well. The horizontal drilling rig drills a hole towards the receiving well through the drill rod, so that one end of the drill rod reaches the receiving well. After drilling the hole, the drill rod is left in the hole formed by the horizontal drilling rig. Then, the pipe jacking device is placed in the working well, and the traction device is placed in the receiving well. The end of the drill rod near the working well is connected to the pipe jacking device, and the end of the drill rod near the receiving well is connected to the traction device. The pipe jacking device starts to move towards the receiving well. The traction device can guide the movement direction of the pipe jacking device through the drill rod until one end of the pipe jacking device enters the receiving well. By guiding the direction of the pipe jacking device through the traction device, the direction of the pipe jacking is made more accurate, avoiding directional deviation during pipe jacking construction and ensuring the directionality of the pipeline.

[0029] Preferably, the horizontal drilling rig includes the drill rod and the drilling rig body, and the traction device is the drilling rig body;

[0030] Between step S2 and step S3, the following is also included:

[0031] Step S21: Separate the drill rod from the drilling rig body;

[0032] Step S22: Lift the drilling rig body out of the working well, and then lift the drilling rig body into the receiving well.

[0033] In this scheme, the horizontal drilling rig includes a drilling rig body and drill rods, with the drilling rig body serving as the traction device. The drilling rig body first drives the drill rods to drill in the working well. After drilling is completed, one end of the drilling rig body and drill rods are separated, the drilling rig body is placed in the receiving well, and then connected to the other end of the drill rods. The drilling rig body then acts as the traction device to pull the pipe jacking device. By using the drilling rig body as the traction device, the horizontal drilling rig can be used for both drilling and pipe jacking, eliminating the need for additional traction devices, making pipe jacking construction more convenient and saving construction costs. After drilling is completed, the drilling rig body is lifted out of the working well and then lowered into the receiving well for traction, allowing for the reuse of a single horizontal drilling rig without the need for multiple rigs, further reducing construction costs.

[0034] Preferably, after step S5, the method further includes:

[0035] Step S6: Repeat steps S1-S5, and keep the drilling direction of the horizontal drilling rig parallel to the extension direction of the previously laid pipeline;

[0036] Step S7: Repeat step S6 to lay multiple pipes to form a pipe curtain.

[0037] In this scheme, when constructing a pipe curtain structure containing multiple pipes, the drilling direction of the horizontal drilling rig is kept parallel to the extension direction of the previously laid pipes when laying subsequent pipes. The pipe jacking device is then pulled along the drilling direction using the drill rod, so that the multiple pipes laid can maintain a consistent directionality, avoiding excessive distance or proximity between adjacent pipes, making the pipe curtain structure more compliant with requirements.

[0038] Preferably, step S3 further includes:

[0039] Step S31: Before placing the pipe jacking device, install a support frame in the working well, and install the pipe jacking device on the support frame.

[0040] In this scheme, a support frame is installed in the working shaft before placing the pipe jacking device. The pipe jacking device is then installed on the support frame. The support frame makes the pipe jacking device more stable and helps to ensure the directional accuracy during pipe jacking construction.

[0041] The positive and progressive effects of this invention are as follows:

[0042] The traction-type pipe jacking system involves placing a pipe jacking device in a working shaft and a traction device in a receiving shaft. The end of the drill rod near the working shaft is connected to the pipe jacking device, and the end near the receiving shaft is connected to the traction device. The traction device guides the movement of the pipe jacking device through the drill rod, ensuring a more accurate direction as the pipe jacking device advances towards the receiving shaft and preventing directional deviations during construction, thus guaranteeing the directionality of the laid pipeline. The pipe jacking device consists of a jacking head and multiple pipe sections, which are sequentially connected to the jacking head. As the jacking head advances towards the receiving shaft, it drives the sequentially connected pipe sections forward. Most of the soil excavated by the jacking head is directly deposited into the pipe sections, reducing the amount of construction waste and benefiting environmental protection. By placing the cable inside the drill pipe and electrically connecting it to the pipe jacking device, the cable provides power to the pipe jacking device to drive it towards the receiving well. This eliminates the need to place the cable inside the pipe section of the pipe jacking device, avoiding the cable occupying part of the internal space of the pipe section, thus avoiding affecting the soil removal and advancement of the pipe jacking device, further reducing the amount of soil discharged, and also avoiding the cable affecting the advancement of the pipe jacking device, making it easier to advance the pipe jacking device, improving construction efficiency, and making it easier to remove the cable after the pipe jacking construction is completed. Attached Figure Description

[0043] Figure 1 This is a longitudinal cross-sectional view of the connection between the pipe jacking device and the drill pipe according to an embodiment of the present invention.

[0044] Figure 2 This is a front view of a pipe jacking device according to an embodiment of the present invention.

[0045] Figure 3 This is a partial cross-sectional view of a lubrication device according to an embodiment of the present invention.

[0046] Figure 4 This is a front view of a slurry pipe according to an embodiment of the present invention.

[0047] Figure 5 This is a flowchart of a traction-type pipe jacking construction method according to an embodiment of the present invention.

[0048] Figure 6 This is a schematic diagram of the structure of the horizontal drilling rig drilling towards the receiving well hole via the drill rod in step S1 according to an embodiment of the present invention.

[0049] Figure 7 This is a schematic diagram of the structure in step S2 of an embodiment of the present invention, in which the drill rod is left in the borehole.

[0050] Figure 8 This is a schematic diagram of the structure of placing the pipe jacking device in the working well in step S3 according to an embodiment of the present invention.

[0051] Figure 9 This is a schematic diagram of the structure in step S3 of an embodiment of the present invention, in which the two ends of the drill pipe are respectively connected to the pipe jacking device and the traction device.

[0052] Figure 10 This is a schematic diagram of the structure of the traction device pulling the jacking pipe device through the drill pipe in step S4 according to an embodiment of the present invention.

[0053] Figure 11 This is a schematic diagram of the structure in step S4 of an embodiment of the present invention, in which one end of the pipe jacking device enters the receiving well.

[0054] Figure 12 This is a schematic diagram of the structure after the pipeline laying is completed in step S5 according to an embodiment of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] Ground 100

[0057] Working well 110

[0058] Receiving well 120

[0059] Receiving Port 121

[0060] Pipe jacking device 200

[0061] Pipe jacking head 210

[0062] Pipe section 220

[0063] traction device 300

[0064] Horizontal drilling rig 400

[0065] Drilling rig body 410

[0066] Drill pipe 420

[0067] Drilling 430

[0068] support frame 500

[0069] Cable 600

[0070] Lubrication device 700

[0071] Connecting pipe 710

[0072] Central tube 711

[0073] 712 slurry pipe

[0074] 720 nozzle

[0075] Fixed rod 730

[0076] Motor 810

[0077] Impeller 820 Detailed Implementation

[0078] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the following embodiments.

[0079] like Figures 1-4 and Figure 8 As shown, this embodiment provides a traction-type pipe jacking system, which includes a pipe jacking device 200, a traction device 300, a drill rod 420, and a cable 600. A working well 110 and a receiving well 120 are excavated on the ground 100. The pipe jacking device 200 is placed inside the working well 110, and the traction device 300 is placed inside the receiving well 120. One end of the drill rod 420 near the working well 110 is connected to the pipe jacking device 200, and the other end near the receiving well 120 is connected to the traction device 300. The traction device 300 can guide the movement direction of the pipe jacking device 200 through the drill rod 420. The cable 600 is located inside the drill rod 420 and is electrically connected to the pipe jacking device 200. The cable 600 is used to provide power to the pipe jacking device 200 to drive its movement.

[0080] The traction-type pipe jacking system involves placing a pipe jacking device 200 in the working shaft 110 and a traction device 300 in the receiving shaft 120. One end of a drill rod 420 near the working shaft 110 is connected to the pipe jacking device 200, and the other end near the receiving shaft 120 is connected to the traction device 300. The traction device 300 guides the movement of the pipe jacking device 200 through the drill rod 420, thus ensuring a more accurate direction when the pipe jacking device 200 advances towards the receiving shaft 120, preventing directional deviation during pipe jacking construction, and guaranteeing the directionality of the laid pipeline. The pipe jacking device 200 includes a pipe jacking head 210 and multiple pipe sections 220, wherein the pipe sections 220 can specifically be reinforced concrete pipe sections or steel pipe sections. Multiple pipe sections 220 are connected sequentially to the pipe jacking head 210. The pipe jacking head 210 moves towards the receiving well 120, thereby driving the multiple pipe sections 220 connected sequentially to the pipe jacking head 210 forward. Most of the soil excavated by the pipe jacking head 210 is directly piled into the pipe section 220, thereby reducing the amount of construction waste soil discharged, which is beneficial to environmental protection.

[0081] By placing the cable 600 inside the drill pipe 420 and electrically connecting it to the pipe jacking device 200, the cable 600 provides power to the pipe jacking device 200 to drive it to move towards the receiving well 120. This eliminates the need to place the cable 600 inside the pipe section 220 of the pipe jacking device 200, avoiding the cable 600 from affecting the advancement of the pipe jacking device 200, avoiding the cable 600 from occupying part of the internal space of the pipe section 220, and thus avoiding affecting the soil discharge of the pipe jacking device 200, further reducing the amount of soil discharged. It also avoids the cable 600 from affecting the advancement of the pipe jacking device 200, making it easier for the pipe jacking device 200 to advance, improving construction efficiency, and making it easier to remove the cable 600 after the pipe jacking construction is completed.

[0082] In this embodiment, the pipe jacking device 200 is a pipe jacking machine or a micro pipe jacking machine. In other embodiments, other pipe jacking devices 200 that are deemed suitable by those skilled in the art may also be selected.

[0083] The traction pipe jacking system also includes a lubrication device 700, which is connected to the pipe jacking device 200 and communicates with the interior of the drill pipe 420, the interior of which is used to fill with lubricating fluid.

[0084] By filling the hollow space inside the drill pipe 420 with lubricating fluid, the lubricating fluid flows into the lubrication device 700 through the hollow space inside the drill pipe 420, thereby lubricating the pipe jacking device 200, reducing the resistance to the advancement of the pipe jacking device 200, and reducing the difficulty of pipe advancement. By inputting the lubricating fluid into the lubrication device 700 through the inside of the drill pipe 420, it is not necessary to place the input pipe of the lubrication device 700 on the side where the pipe section 220 of the pipe jacking device 200 is located, thus avoiding occupying part of the internal space of the pipe section 220, thereby avoiding affecting the soil removal and advancement of the pipe jacking device 200, further reducing the amount of soil discharged, and preventing the input pipe of the lubrication device 700 from affecting the advancement of the pipe jacking device 200.

[0085] The lubrication device 700 includes a connecting pipe 710 and a nozzle 720. The connecting pipe 710 connects the interior of the drill pipe 420 and the nozzle 720. The spray direction of the nozzle 720 is towards the inner wall of the jacking device 200.

[0086] Lubricating fluid flows from the inside of the drill rod 420 into the connecting pipe 710, and then into the nozzle 720. By setting the spray direction of the nozzle 720 towards the inner wall of the pipe jacking device 200, it is easier to lubricate the inner wall of the pipe jacking device 200, reduce the friction between the soil and the inner wall of the pipe jacking device 200, reduce the resistance of pipeline laying, and improve the efficiency of pipe jacking construction.

[0087] The connecting pipe 710 includes a central pipe 711 and a plurality of slurry pipes 712. The central pipe 711 extends along the axial direction of the jacking device 200. By extending the central pipe 711 along the axial direction of the jacking device 200, it is easier for lubricating fluid to flow from the inside of the drill pipe 420 to the jacking device 200. At least a portion of the slurry pipes 712 extend along the circumferential direction of the jacking device 200, and at least a portion of the slurry pipes 712 are in contact with the inner wall of the jacking device 200. This allows the lubricating fluid to be evenly distributed in the circumferential direction of the jacking device 200 through the slurry pipes 712, and also avoids interference between the slurry pipes 712 and the internal structure of the jacking device 200. The central tube 711 connects the interior of the drill pipe 420 and the slurry pipe 712. The slurry pipe 712 connects to the nozzle 720. Multiple nozzles 720 are spaced apart on the slurry pipe 712 along the circumferential direction of the jacking device 200, so that the multiple nozzles 720 can spray lubricating fluid more evenly in the circumferential direction of the jacking device 200, resulting in better lubrication.

[0088] like Figure 4 As shown, one section of the grout pipe 712 is mounted on the fixing rod 730, thereby making the fixing of the grout pipe 712 more stable. The other section of the grout pipe 712 is attached to the inner wall of the pipe jacking device 200 and extends along the circumferential direction of the pipe jacking device 200.

[0089] The pipe jacking head 210 has multiple fixing rods 730 inside, extending radially along the head. The motor 810 is fixed to the fixing rods 730. The central tube 711 is located at the central shaft of the motor 810, facilitating the fixing of the central tube 711 and the motor 810. One end of the drill rod 420 passes through the center of the motor 810, connecting to the central tube 711, facilitating the flow of lubricating fluid to the central tube 711 and the slurry pipe 712, and strengthening the connection between the drill rod 420 and the pipe jacking head 210. The motor 810 is an external rotor motor, and the stator central shaft of the motor 810 has an opening to accommodate the central tube 711 and the drill rod 420.

[0090] The pipe jacking device 200 has a motor 810 and multiple impellers 820 at one end near the drill rod 420. The motor 810 is electrically connected to the cable 600. The motor 810 drives the impellers 820 to rotate. The impellers 820 press the soil in front of the pipe jacking head 210 into the pipe section 220, avoiding huge extrusion pressure on the soil in front, avoiding large deformation of the strata, and reducing disturbance to the environment.

[0091] In the axial direction of the pipe jacking device 200, multiple impellers 820 are respectively arranged on both sides of the motor 810. By setting multiple impellers 820, the propulsion power is increased and the efficiency of pipe laying is improved.

[0092] In this embodiment, there is one motor 810 and two impellers 820. In other embodiments, two motors 810 and three impellers 820 may be provided, or other numbers of motors 810 and impellers 820 may be selected as appropriate by those skilled in the art.

[0093] The drill rod 420 is connected to the center of the pipe jacking head 210, which makes it easier for the drill rod 420 to pull the pipe jacking head 210, and thus makes the forward direction of the pipe section 220 more accurate.

[0094] like Figures 5-12 As shown, this embodiment also provides a traction-type pipe jacking construction method. The traction-type pipe jacking construction method uses the above-mentioned traction-type pipe jacking system and includes the following steps:

[0095] Step S1: Place a horizontal drilling rig 400 in the working well 110. The horizontal drilling rig 400 drills a hole 430 toward the receiving well 120 through the drill rod 420 so that one end of the drill rod 420 reaches the receiving well 120.

[0096] Step S2: Leave the drill rod 420 in the borehole 430 formed by the horizontal drilling machine 400;

[0097] Step S3: Place the pipe jacking device 200 in the working well 110, place the traction device 300 in the receiving well 120, connect the end of the drill rod 420 near the working well 110 to the pipe jacking device 200, and connect the end of the drill rod 420 near the receiving well 120 to the traction device 300.

[0098] Step S4: The pipe jacking device 200 starts moving toward the receiving well 120. The traction device 300 can guide the movement direction of the pipe jacking device 200 through the drill pipe 420 until one end of the pipe jacking device 200 enters the receiving well 120.

[0099] Step S5: Complete the pipeline laying.

[0100] The traction-type pipe jacking construction method first involves placing a horizontal drilling rig 400 in the working well 110. The horizontal drilling rig 400 drills a hole 430 towards the receiving well 120 via drill rod 420, ensuring that one end of the drill rod 420 reaches the receiving well 120. After drilling the hole 430, the drill rod 420 is left in the hole 430 formed by the horizontal drilling rig 400. Then, a pipe jacking device 200 is placed in the working well 110, and a traction device 300 is placed in the receiving well 120. The end of the drill rod 420 closest to the working well 110 is then connected to the pipe jacking device. Connect the drill pipe 420 to the receiving well 120 and connect one end of the drill pipe 420 near the receiving well 120 to the traction device 300. The jacking device 200 starts moving toward the receiving well 120. The traction device 300 can guide the movement direction of the jacking device 200 through the drill pipe 420 until one end of the jacking device 200 enters the receiving well 120. By guiding the direction of the jacking device 200 through the traction device 300, the jacking direction is made more accurate, avoiding directional deviation during jacking construction and ensuring the directionality of the pipeline.

[0101] The horizontal drilling rig 400 includes a drill rod 420 and a drilling rig body 410, and the traction device 300 is the drilling rig body 410;

[0102] Between step S2 and step S3, the following is also included:

[0103] Step S21: Separate the drill rod 420 from the drill body 410;

[0104] Step S22: Lift the drilling rig body 410 out of the working well 110, and then lift the drilling rig body 410 into the receiving well 120.

[0105] The drilling rig body 410 first drives the drill rod 420 to drill a hole 430 in the working well 110. After drilling the hole 430, one end of the drilling rig body 410 and the drill rod 420 are separated, the drilling rig body 410 is placed in the receiving well 120, and the drilling rig body 410 is connected to the other end of the drill rod 420. The drilling rig body 410 then acts as a traction device 300 to pull the pipe jacking device 200. By using the drilling rig body 410 as the traction device 300, the horizontal drilling rig 400 can be used to pull the pipe jacking device 200 in addition to drilling the hole 430, eliminating the need for an additional traction device 300. This makes pipe jacking construction more convenient and saves construction costs. After drilling the hole 430, the drilling rig body 410 is lifted out of the working well 110 and then lowered into the receiving well 120 for traction. This allows for the reuse of a single horizontal drilling rig 400, eliminating the need for multiple horizontal drilling rigs 400 and further saving construction costs.

[0106] Step S5 is followed by:

[0107] Step S6: Repeat steps S1-S5, and keep the drilling direction of the horizontal drilling rig 400 parallel to the extension direction of the previously laid pipeline.

[0108] Step S7: Repeat step S6 to lay multiple pipes to form a pipe curtain.

[0109] When constructing a pipe curtain structure containing multiple pipes, when laying subsequent pipes, the drilling direction 430 of the horizontal drilling rig 400 is kept parallel to the extension direction of the previously laid pipes. Then, the pipe jacking device 200 is pulled along the drilling direction 430 by the drill rod 420. This ensures that the multiple pipes laid have a consistent directionality, avoids the distance between adjacent pipes being too far or too close, and makes the pipe curtain structure more in line with requirements.

[0110] Step S3 also includes:

[0111] Step S31: Before placing the pipe jacking device 200, install a support frame 500 in the working shaft 110, and install the pipe jacking device 200 on the support frame 500.

[0112] Before placing the pipe jacking device 200, a support frame 500 is installed in the working shaft 110. The pipe jacking device 200 is installed on the support frame 500. Setting up the support frame 500 makes the pipe jacking device 200 more stable and is more conducive to ensuring the directional accuracy during pipe jacking construction.

[0113] A receiving opening 121 is provided on the side wall of the receiving well 120. In step S4, the pipe jacking head 210 passes through the receiving opening 121 and enters the interior of the receiving well 120. When the pipe jacking head 210 reaches the receiving opening 121, it passes through the receiving opening 121 and enters the interior of the receiving well 120, thereby enabling the pipe jacking head 210 to enter the receiving well 120 more stably and accurately, thus further ensuring the directionality of the entire pipe jacking construction.

[0114] Between step S4 and step S5, the following is also included:

[0115] Step S41: Remove the pipe jacking head 210 from the pipe section 220, and lift the pipe jacking head 210 and the horizontal drilling rig 400 out of the receiving well 120.

[0116] Between steps S4 and S5, a step is added to remove the pipe jacking head 210 from the pipe section 220 and to lift the pipe jacking head 210 and the horizontal drilling rig 400 out of the receiving well 120. This allows the pipe jacking head 210 and the horizontal drilling rig 400 to be retrieved from the receiving well 120 in a timely manner after the laying of one pipeline, freeing up space and position for the construction preparation of the next pipeline. This facilitates the subsequent repetition of steps to lay multiple pipelines and also makes it easier to inspect, maintain, or replace the pipe jacking head 210 and the horizontal drilling rig 400.

[0117] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A traction-type pipe jacking system, characterized in that, The traction-type pipe jacking system includes a pipe jacking device, a traction device, a drill rod, and a cable. The pipe jacking device includes a pipe jacking head and multiple pipe sections, which are sequentially connected to the pipe jacking head. The pipe jacking device is used to be placed in the working shaft, and the traction device is used to be placed in the receiving shaft. The end of the drill pipe near the working well is connected to the pipe jacking device, and the end of the drill pipe near the receiving well is connected to the traction device. The traction device can guide the movement direction of the pipe jacking device through the drill pipe. The cable is located inside the drill pipe and is electrically connected to the pipe jacking device. The cable is used to provide power to the pipe jacking device to drive its movement.

2. The traction-type pipe jacking system as described in claim 1, characterized in that, The traction-type pipe jacking system also includes a lubrication device, which is connected to the pipe jacking device and communicates with the interior of the drill pipe, the interior of which is used to fill with lubricating fluid.

3. The traction-type pipe jacking system as described in claim 2, characterized in that, The lubrication device includes a connecting pipe and a nozzle. The connecting pipe connects the interior of the drill pipe to the nozzle, and the nozzle sprays towards the inner wall of the jacking device.

4. The traction-type pipe jacking system as described in claim 3, characterized in that, The connecting pipe includes a central pipe and a plurality of slurry pipes. The central pipe extends along the axial direction of the jacking device, and at least a portion of the slurry pipes extend along the circumferential direction of the jacking device, and at least a portion of the slurry pipes are in contact with the inner wall of the jacking device. The central pipe connects the interior of the drill pipe and the slurry pipe, the slurry pipe connects to the nozzle, and a plurality of nozzles are spaced apart on the slurry pipe along the circumferential direction of the jacking device.

5. The traction-type pipe jacking system as described in claim 1, characterized in that, The pipe jacking device has a motor and multiple impellers at one end near the drill rod. The motor is electrically connected to the cable. In the axial direction of the pipe jacking device, the multiple impellers are respectively located on both sides of the motor.

6. The traction-type pipe jacking system as described in claim 1, characterized in that, The drill rod is connected to the center of the pipe jacking head.

7. A traction-type pipe jacking construction method, characterized in that, The traction-type pipe jacking construction method uses the traction-type pipe jacking system as described in any one of claims 1-6, and the traction-type pipe jacking construction method includes the following steps: Step S1: Place a horizontal drilling rig in the working well. The horizontal drilling rig drills a hole toward the receiving well through a drill rod so that one end of the drill rod reaches the receiving well. Step S2: Leave the drill rod in the borehole formed by the horizontal drilling machine; Step S3: Place the pipe jacking device in the working well, place the traction device in the receiving well, connect the end of the drill rod near the working well to the pipe jacking device, and connect the end of the drill rod near the receiving well to the traction device. Step S4: The pipe jacking device starts moving toward the receiving well. The traction device can guide the movement direction of the pipe jacking device through the drill pipe until one end of the pipe jacking device enters the receiving well. Step S5: Complete the pipeline laying.

8. The traction-type pipe jacking construction method as described in claim 7, characterized in that, The horizontal drilling rig includes the drill rod and the drilling rig body, and the traction device is the drilling rig body; Between step S2 and step S3, the following is also included: Step S21: Separate the drill rod from the drilling rig body; Step S22: Lift the drilling rig body out of the working well, and then lift the drilling rig body into the receiving well.

9. The traction-type pipe jacking construction method as described in claim 7, characterized in that, The step S5 is followed by: Step S6: Repeat steps S1-S5, and keep the drilling direction of the horizontal drilling rig parallel to the extension direction of the previously laid pipeline; Step S7: Repeat step S6 to lay multiple pipes to form a pipe curtain.

10. The traction-type pipe jacking construction method as described in claim 7, characterized in that, Step S3 also includes: Step S31: Before placing the pipe jacking device, install a support frame in the working well, and install the pipe jacking device on the support frame.

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