A trenchless pipeline top laying construction method

Abstract

The present application relates to the technical field of underground pipeline construction, and in particular to a trenchless pipeline pulling and top laying construction method, which includes the following steps: S1, digging a working well and a receiving well; digging a working well at the starting point of pipeline laying, and digging a receiving well at the end point of pipeline laying; S2, drilling guide; using a pipe jacking machine to drill holes in the working well in the direction of the receiving well through a multi-segment drill bit, and pre-reserving the multi-segment drill bit in the drill hole; S3, reaming; using a pipe jacking machine in the working well in the direction of the receiving well through a reaming assembly to reaming along the direction of the multi-segment drill bit; S4, pulling the pipe; using a pipe jacking machine in the working well in the direction of the receiving well to connect and install the pipeline; S5, cleaning the site; cleaning the inside of the pipeline, and cleaning the working well and the receiving well to complete the pipeline pulling and top laying construction. The present application has the effect of reducing the construction area and improving the convenience of construction.

Description

Technical Field

[0001] The present application relates to the technical field of underground pipeline construction, and in particular to a trenchless pipeline top-laying construction method. Background Art

[0002] With the further development of urbanization and the gradual improvement of rural living conditions, the demand for public infrastructure and household water supply and drainage has further increased, which is inseparable from construction work such as pipeline installation, laying, and maintenance.

[0003] In the related art, the pipeline is installed and laid by directly excavating the road surface, and then laying the pipeline in the excavated trench. After laying, the excavated road surface is repaired by backfilling.

[0004] With regard to the above-mentioned related technologies, the inventor believes that the construction method of digging the road surface to bury underground pipelines will no longer be applicable in downtown areas with dense buildings, sections with poor geology, sections with many underground cables, or when the planned buried pipelines need to pass through rivers, and the construction requires a large area. It is not conducive to the improvement of the urban drainage system and also causes great inconvenience to people's daily production. Summary of the invention

[0005] In order to reduce the construction area and improve the convenience of construction, the present application provides a trenchless pipeline top-laying construction method.

[0006] The present application provides a trenchless pipeline top-laying construction method using the following technical solutions:

[0007] A trenchless pipeline top laying construction method includes the following construction steps:

[0008] S1. Dig a working well and a receiving well. Dig a working well at the starting point of the pipeline laying, and dig a receiving well at the end point of the pipeline laying;

[0009] S2, drilling guidance: using a pipe jacking machine to drill a hole in the working well in the direction of the receiving well with a multi-segment drill bit, and leaving the multi-segment drill bit in the borehole;

[0010] S3, expanding the hole; using the pipe jacking machine to expand the hole in the working well toward the receiving well through the expanding assembly along the direction of the multi-segment drill bit;

[0011] S4, pulling the pipe; using the pipe jacking machine to connect and install the pipeline in the working well toward the receiving well;

[0012] S5. Clean the site; clean the inside of the pipeline, and clean the working well and the receiving well to complete the pipeline top laying construction.

[0013] By adopting the above technical scheme, during construction, a working well and a receiving well are dug at the starting point and the end point of the pipeline laying respectively, and then a pipe jacking machine is installed in the working well, and drilling, hole expansion and pipe pulling are carried out in the direction of the receiving well to realize the laying of the pipeline, which changes the method of directly digging and installing the pipeline channel on the road surface. During the construction process, only the road surface area corresponding to the working well and the receiving well needs to be occupied, which reduces the construction area and improves the convenience of construction.

[0014] Optionally, the multi-section drill bit includes a plurality of sub-drill bits, one end of each sub-drill bit is provided with a cross assembly groove, and the other end of each sub-drill bit is provided with a cross assembly block, and the cross assembly block is snap-fitted with the cross assembly groove.

[0015] By adopting the above technical solution, the cross assembly block and the cross assembly groove are arranged in coordination, so that multiple sub-drill bits can be connected and disassembled with each other, which is convenient for construction.

[0016] Optionally, a blind hole is provided at the bottom of the cross assembly groove, a threaded sleeve is slidably installed in the blind hole, an internal thread is provided inside the threaded sleeve, and a bolt is fixed to one end of the cross assembly block away from the sub-drill bit, and the bolt is threadably matched with the threaded sleeve.

[0017] By adopting the above technical solution, the matching arrangement of the threaded sleeve and the bolt can fix the sub-drill bits, thereby facilitating the stability of the connection between the sub-drill bits and facilitating adjustment.

[0018] Optionally, the reaming assembly includes a reaming sleeve, both ends of which are open, and a fixing frame is installed at one end of the reaming sleeve, the fixing frame is used to connect with the pipe jacking machine, and the pipe jacking machine is used to drive the reaming sleeve to rotate, the reaming sleeve is radially expanded along one end of the fixing frame toward the other end, and the inner side wall of the reaming sleeve is spirally provided with multiple scraper plates along the length direction, and the multiple scraper plates are arranged in a circular array along the central axis of the reaming sleeve.

[0019] By adopting the above technical solution, during operation, the hole expanding sleeve can scrape the soil, so that the soil moves toward the other end driven by the scraper, thereby achieving the hole expanding effect.

[0020] Optionally, a guide casing is fixedly installed in the fixed frame, the guide casing is sleeved and matched with the multi-section drill bit, a guide drill is fixed to one end of the guide casing, and the pipe jacking machine is used to drive the guide drill to rotate and move toward one end of the receiving well.

[0021] By adopting the above technical solution, the coordinated arrangement of the guide sleeve and the guide drill bit can connect the fixed frame with the multi-segment drill bit, and then the guide drill is driven by the pipe jacking machine to rotate and move along the direction of the multi-segment drill bit, so that the reaming sleeve can perform reaming operations driven by the fixed frame.

[0022] Optionally, the cross assembly block is fixedly provided on one end of the guide drill away from the guide sleeve, and the cross assembly block is snap-fitted with the cross assembly groove.

[0023] By adopting the above technical solution, a cross assembly groove is provided at the end of the guide drill, so that the guide drill can be connected to the sub-drill bit, which is beneficial to extend the working distance of the guide drill through the sub-drill bit.

[0024] Optionally, the pipe jacking machine includes a mounting frame, a pushing cylinder and a driving motor, the pushing cylinder is horizontally installed on the side wall of the mounting frame, a moving frame is installed on the end of the telescopic rod of the pushing cylinder, the driving motor is horizontally installed on the side wall of the moving frame, and the driving shaft of the driving motor is provided with the cross assembly groove.

[0025] By adopting the above technical solution, when working, the sub-drill bit is installed on the driving shaft of the driving cylinder, the telescopic rod of the cylinder is pushed to extend, the mobile frame drives the driving motor to move, and at the same time the driving motor is started to drive the sub-drill bit to rotate, so that the sub-drill bit can drill holes in the soil.

[0026] Optionally, a first mating ring is fixed to one end of the pipe, and a wave clamping portion is provided on the inner wall of the first mating ring along the axial direction; a second mating ring is fixed to the other end of the pipe, and a wave mating portion is provided on the outer wall of the second mating ring along the axial direction; the wave clamping portion is used to cooperate with the wave mating portion.

[0027] By adopting the above technical solution, the matching arrangement of the first matching ring and the second matching ring can connect the pipes end to end and fix them by clamping, thereby facilitating the connection of the pipes.

[0028] Optionally, a soft soil component is provided on one side of the mounting frame, and the soft soil component is used to soften the soil.

[0029] By adopting the above technical solution and setting up the soft soil component, the soil to be excavated can be softened, thereby facilitating the excavation of the soil.

[0030] Optionally, the soft soil assembly includes a sprinkler head, a connecting pipe and a water tank, the water tank is installed on one side of the mounting frame, and a water pump is installed on the side wall of the water tank, the sprinkler head is fixed on the other side of the mobile frame, and the sprinkler head is connected to the water outlet end of the water pump through a connecting pipe, and the sprinkler head is used to soften the excavated soil by sprinkling water.

[0031] By adopting the above technical solution, when in use, the water pump can extract water from the water tank and supply it to the sprinkler head through the connecting pipe, and finally soften the soil to be excavated by sprinkling water, thereby realizing the role of the soft soil component.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. During construction, a working well and a receiving well are dug at the starting point and the end point of the pipeline laying, and then a pipe jacking machine is installed in the working well, and drilling, expanding and pulling pipes are carried out in the direction of the receiving well to realize the laying of the pipeline, which changes the method of directly digging and installing pipeline channels on the road surface. During the construction process, only the road surface area corresponding to the working well and the receiving well is occupied, which reduces the construction area and improves the convenience of construction;

[0034] 2. The cross assembly block and the cross assembly groove are arranged in cooperation, so that multiple sub-drill bits can be connected and disassembled to facilitate construction;

[0035] 3. The matching arrangement of the threaded sleeve and the bolt can fix the sub-drill bits, thereby improving the stability of the connection between the sub-drill bits and facilitating adjustment;

[0036] 4. The setting of the soft soil component can soften the soil to be excavated, thereby improving the convenience of excavating the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of a trenchless pipeline top-laying construction method in an embodiment of the present application.

[0038] Figure 2 It is a structural schematic diagram of a trenchless pipeline top-laying construction method in an embodiment of the present application.

[0039] Figure 3 It is a schematic diagram of the structure behind the hidden pipes in a trenchless pipe top laying construction method in an embodiment of the present application.

[0040] Figure 4 This is a schematic structural diagram from another perspective behind the hidden pipes of a trenchless pipe top-laying construction method in an embodiment of the present application.

[0041] Figure 5It is a schematic diagram of the structure of the hole expansion assembly in the embodiment of the present application.

[0042] Figure 6 yes Figure 4 Enlarged view of part A in the middle.

[0043] Figure 7 It is a structural cross-sectional view of the sleeve in the embodiment of the present application.

[0044] Figure 8 It is a structural cross-sectional view of a neutron drill bit implemented in the present application.

[0045] Description of reference numerals:

[0046] 1. Working well; 2. Receiving well; 3. Pipeline; 4. Pipe jacking machine; 41. Mounting frame; 42. Pushing cylinder; 43. Driving motor; 44. Moving frame; 45. Guide rail; 5. Multi-section drill bit; 51. Sub-drill bit; 6. Cross assembly block; 7. Cross assembly groove; 8. Blind hole; 81. Limiting table; 9. Threaded sleeve; 10. Bolt; 11. Hole expansion assembly; 111. Hole expansion sleeve; 112. Scraper; 113. Fixed frame; 114. Guide sleeve; 115. Guide drill; 12. Soft soil assembly; 121. Sprinkler; 122. Connecting pipe; 123. Water storage tank; 124. Water pump; 13. First matching ring; 14. Second matching ring; 15. Third matching ring; 16. Wave clamping part; 17. Wave matching part. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-8 This application is described in further detail.

[0048] The present application embodiment discloses a trenchless pipeline top laying construction method. Figure 1 A trenchless pipeline top laying construction method includes the following construction steps:

[0049] S1. Dig working well 1 and receiving well 2; S2. Drilling guidance; S3. Hole expansion; S4. Pipe pulling; S5. Site cleaning.

[0050] Specifically, refer to Figure 2 , step one, dig a working well 1 at the starting point of the pipeline 3, and dig a receiving well 2 at the end point of the pipeline 3, so that the subsequent work of laying the pipeline 3 can be carried out in the working well 1 and the receiving well without occupying too much road area.

[0051] Reference Figure 2-4, step two, a pipe jacking machine 4 is installed in the working well 1. The pipe jacking machine 4 includes a mounting frame 41, a pushing cylinder 42 and a driving motor 43. The mounting frame 41 is arranged in an L-shape as a whole, and two pushing cylinders 42 are arranged, and the two pushing cylinders 42 are horizontally installed on the side wall of the mounting frame 41 and symmetrically arranged along the symmetry plane in the vertical direction of the mounting frame 41. A moving frame 44 is slidably arranged on the top of the mounting frame 41, and the moving frame 44 is arranged vertically, and a guide rail 45 is arranged on the top of the mounting frame 41, and a guide groove is provided at the bottom of the moving frame 44, and the guide groove is engaged with the guide rail 45. The telescopic rod of the pushing cylinder 42 is fixedly connected to the side wall of the moving frame 44, so that the moving frame 44 is pushed by the pushing cylinder 42 to slide back and forth along the length direction of the guide rail 45.

[0052] Reference Figure 3 and Figure 8 The driving motor 43 is horizontally mounted on the side wall of the mobile frame 44, and the driving rod of the driving motor 43 penetrates the side wall of the mobile frame 44 and extends out of the other side. The driving rod of the driving motor 43 is connected to the multi-segment drill bit 5. Specifically, the multi-segment drill bit 5 includes a plurality of sub-drill bits 51, and a cross assembly groove 7 is correspondingly opened at one end of the sub-drill bit 51. A cross assembly block 6 is installed at the other end of the sub-drill bit 51, and the cross assembly block 6 is engaged with the cross assembly groove 7. The end surface of the driving rod of the driving motor 43 is correspondingly opened with a cross assembly groove 7 for engaging with the cross assembly block 6.

[0053] During operation, a pipe jacking machine 4 is used to drill a hole in the working well 1 toward the receiving well 2 through a multi-segment drill bit 5. The length of the hole is increased by continuously adding sub-drill bits 51, and finally the penetration work from the well wall of the working well 1 to the well wall of the receiving well 2 is completed, and the multi-segment drill bit 5 is reserved in the hole for subsequent processing.

[0054] Reference Figure 6 and Figure 8In order to improve the stability of the connection between multiple sub-drill bits 51, a blind hole 8 is provided at the bottom of the cross assembly groove 7. The cross section of the blind hole 8 is set in a polygonal shape. In this embodiment, the blind hole 8 is set as a hexagonal blind hole 8. A threaded sleeve 9 is slidably installed in the blind hole 8. The outer wall of the threaded sleeve 9 fits with the inner wall of the blind hole 8, so that the threaded sleeve 9 can be limited by the blind hole 8 to reduce the rotation of the threaded sleeve 9. A limiting platform 81 is fixedly set at the orifice position of the blind hole 8, so that the sliding of the threaded sleeve 9 can be limited by the limiting platform 81 to reduce the occurrence of the threaded sleeve 9 sliding out of the blind hole 8. The threaded sleeve 9 is provided with an internal thread, and a bolt 10 is fixed at one end of the cross assembly block 6 away from the sub-drill bit 51, and the bolt 10 is threadedly matched with the threaded sleeve 9. Therefore, two adjacent sub-drill bits 51 can be locked with each other through the threaded match of the bolt 10 and the threaded sleeve 9, reducing the occurrence of the situation where the sub-drill bits 51 are separated from each other and improving the stability of the connection between the sub-drill bits 51. A through hole for inserting the bolt 10 is correspondingly provided at the end of the driving rod of the driving motor 43 .

[0055] Reference Figure 5 , step three, assembling the reaming assembly 11 at the ends of the plurality of sub-drill bits 51 to carry out reaming. Specifically, the reaming assembly 11 comprises a reaming sleeve 111, both ends of the reaming sleeve 111 are open, and a fixing frame 113 is installed at one end of the reaming sleeve 111, a guide sleeve 114 is fixedly installed in the fixing frame 113, a guide drill 115 is fixed at one end of the guide sleeve 114, and a cross assembly block 6 is fixedly arranged at one end of the guide drill 115 away from the guide sleeve 114, and the cross assembly block 6 is used to engage with the cross assembly groove 7. Thus, the cross assembly block 6 on the guide drill 115 and the cross assembly groove 7 on the sub-drill bit 51 can be engaged with each other, so that the reaming sleeve 111 can be installed between the plurality of sub-drill bits 51 and move along the sub-drill bits 51, and the sub-drill bits 51 are driven by the driving motor 43 to drive the guide drill 115 to rotate, so that the fixing frame 113 drives the reaming sleeve 111 to perform the reaming rotation operation.

[0056] Reference Figure 5 The reaming sleeve 111 is radially expanded from one end of the fixing frame 113 toward the other end, and the inner side wall of the reaming sleeve 111 is spirally provided with multiple scraper blades 112 along the length direction. The multiple scraper blades 112 are arranged in a circumferential array along the central axis of the reaming sleeve 111. Thus, the scraping ability of the reaming sleeve 111 on soil can be improved through the cooperation of the multiple scraper blades 112, which facilitates the reaming construction.

[0057] Reference Figure 3 and Figure 4, a soft soil assembly 12 is arranged on one side of the mounting frame 41, and the soft soil assembly 12 includes a sprinkler 121, a connecting pipe 122 and a water tank 123. The water tank 123 is installed on one side of the mounting frame 41, and a water pump 124 is installed on the side wall of the water tank 123. In this embodiment, four sprinkler heads 121 are arranged, and the four sprinkler heads 121 are fixed on the side wall of the mobile frame 44 and arranged in a square array along the driving shaft of the driving motor 43. The sprinkler head 121 is connected to the water outlet end of the water pump 124 through the connecting pipe 122. Therefore, the soil to be excavated can be softened by sprinkling water before construction, and the softening degree of the soil at the working well 1 can be maintained by the timed sprinkling of the sprinkler head 121, which is convenient for construction. At the same time, the sprinkler head 121 can also be used to sprinkle water and reduce dust in the working environment near the excavation pipe, so as to reduce the dust pollution caused by the soil in the well drying and dusting after long-term contact with the air.

[0058] Reference Figure 2 , Figure 3 and Figure 7 , step four, use the pipe 3 to be placed in the expanded hole for pipe pulling and setting. Specifically, a first matching ring 13 is fixed at one end of the pipe 3, and a wave clamping portion 16 is provided on the inner side wall of the first matching ring 13 along the axial direction, and a second matching ring 14 is fixed at the other end of the pipe 3, and a wave matching portion 17 is provided on the outer side wall of the second matching ring 14 along the axial direction, and the wave clamping portion 16 is used to match the wave matching portion 17. A third matching ring 15 matching with the first matching ring 13 is fixedly provided on the outer side wall of the reaming sleeve 111, and a wave matching portion 17 is provided on the outer side wall of the third matching ring 15 along the axial direction, and the radius of the third matching ring 15 is smaller than the radius of the second matching ring 14, so as to reduce the contact friction between the reaming sleeve 111 and the pipe 3. During construction, the construction workers will pre-apply lubricant to the inner wall of the first mating ring 13 that is installed in conjunction with the third mating ring 15, so as to protect the connection between the pipe 3 and the reaming sleeve 111, and drive the pipe 3 toward one side of the receiving well 2 for installation without affecting the rotation of the reaming sleeve 111.

[0059] Step five, after the installation of pipeline 3 is completed, it is necessary to clean the inside of pipeline 3, the inside of working well 1 and the inside of receiving well 2 to ensure the cleanliness of the inside of pipeline 3 and not affect the use of pipeline 3.

[0060] The implementation principle of a trenchless pipeline top-laying construction method in the embodiment of the present application is as follows:

[0061] A working well 1 and a receiving well 2 are excavated at the construction site, and then a pipe jacking machine 4 is installed in the working well 1, and a multi-section drill bit 5 is installed on the pipe jacking machine 4 to perform drilling work in the direction of the receiving well 2. After the drilling is completed, the hole expansion sleeve 111 is installed to expand the hole, and after the expansion is completed, the pipeline 3 is installed in the hole, thereby completing the laying of the pipeline 3, and finally cleaning the construction site to complete the construction, thereby changing the method of directly digging and installing the pipeline 3 on the road surface. During the construction process, only the road surface area corresponding to the working well 1 and the receiving well 2 needs to be occupied, which reduces the construction area and improves the convenience of construction.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A trenchless pipeline top laying construction method, characterized in that: The construction steps include: S1, digging a working well (1) and a receiving well (2); digging a working well (1) at the starting point of laying the pipeline (3), and digging a receiving well (2) at the end point of laying the pipeline (3); S2, drilling guidance; using a pipe jacking machine (4) to drill a hole in the working well (1) in the direction of the receiving well (2) using a multi-segment drill bit (5), and leaving the multi-segment drill bit (5) in the drill hole; S3, hole enlarging; using the pipe jacking machine (4) to enlarge the hole in the working well (1) in the direction of the receiving well (2) through the hole enlarging component (11) along the direction of the multi-segment drill bit (5); S4, pulling the pipe; using the pipe jacking machine (4) to connect and install the pipeline (3) in the working well (1) in the direction of the receiving well (2); S5, cleaning the site; cleaning the inside of the pipeline (3), and cleaning the inside of the working well (1) and the receiving well (2), and completing the construction of laying the top of the pipeline (3); The multi-section drill bit (5) comprises a plurality of sub-drill bits (51), one end of each sub-drill bit (51) is provided with a cross assembly groove (7), the other end of each sub-drill bit (51) is provided with a cross assembly block (6), and the cross assembly block (6) is snap-fitted with the cross assembly groove (7); a blind hole (8) is provided at the bottom of each cross assembly groove (7), a threaded sleeve (9) is slidably mounted in each blind hole (8), an internal thread is provided inside the threaded sleeve (9), a bolt (10) is fixed to one end of the cross assembly block (6) away from the sub-drill bit (51), and the bolt (10) is threadably fitted with the threaded sleeve (9); The reaming assembly (11) comprises a reaming sleeve (111), both ends of the reaming sleeve (111) are open, and a fixing frame (113) is installed at one end of the reaming sleeve (111), the fixing frame (113) is used to be connected to the pipe jacking machine (4), and the pipe jacking machine (4) is used to drive the reaming sleeve (111) to rotate, the reaming sleeve (111) is radially expanded from one end of the fixing frame (113) toward the other end, and the inner side wall of the reaming sleeve (111) is spirally provided with a plurality of scraping plates (112) along the length direction, and the plurality of scraping plates (112) are arranged in a circular array along the central axis of the reaming sleeve (111); A guide sleeve (114) is fixedly installed in the fixed frame (113), the guide sleeve (114) is sleeved and matched with the multi-section drill bit (5), a guide drill (115) is fixed at one end of the guide sleeve (114), and the pipe jacking machine (4) is used to drive the guide drill (115) to rotate and move toward one end of the receiving well (2); A first matching ring (13) is fixed to one end of the pipe (3), and a wave clamping portion (16) is provided on the inner side wall of the first matching ring (13) along the axial direction; a second matching ring (14) is fixed to the other end of the pipe (3), and a wave matching portion (17) is provided on the outer side wall of the second matching ring (14) along the axial direction; the wave clamping portion (16) is used to match the wave matching portion (17).

2. A trenchless pipeline top-laying construction method according to claim 1, characterized in that: The cross assembly block (6) is fixedly provided on one end of the guide drill (115) away from the guide sleeve (114), and the cross assembly block (6) is snap-fitted with the cross assembly groove (7).

3. A trenchless pipeline top-laying construction method according to claim 1, characterized in that: The pipe jacking machine (4) comprises a mounting frame (41), a pushing cylinder (42) and a driving motor (43); the pushing cylinder (42) is horizontally mounted on a side wall of the mounting frame (41); a moving frame (44) is mounted on the end of a telescopic rod of the pushing cylinder (42); the driving motor (43) is horizontally mounted on the side wall of the moving frame (44); and the driving shaft of the driving motor (43) is provided with the cross assembly groove (7).

4. A trenchless pipeline top laying construction method according to claim 3, characterized in that: A soft soil component (12) is provided on one side of the mounting frame (41), and the soft soil component (12) is used to soften the soil.

5. A trenchless pipeline top-laying construction method according to claim 4, characterized in that: The soft soil component (12) comprises a sprinkler head (121), a connecting pipe (122) and a water storage tank (123); the water storage tank (123) is installed on one side of the mounting frame (41), and a water pump (124) is installed on the side wall of the water storage tank (123); the sprinkler head (121) is fixed on the other side of the mobile frame (44), and the sprinkler head (121) is connected to the water outlet end of the water pump (124) through the connecting pipe (122); the sprinkler head (121) is used to soften the soil to be excavated by sprinkling water.

Images