Anchor cable removal system and method for intruding into shield tunnel section

Abstract

The invention discloses a system and method for removing anchor cables that have invaded a shield tunnel section. The system comprises an anchor cable detection component, an anchor cable cutting component, and an anchor cable extraction component. The anchor cable cutting component drills holes in the soil on both sides of the shield tunnel (1) to form anchor cable cutting holes (3). The anchor cable detection component is mounted on the anchor cable cutting component so that the anchor cable detection component detects the position of the anchor cable (2) as the anchor cable cutting component drills. The anchor cable cutting component cuts the anchor cable into a first section (202a), a second section (202b), and a third section (202c). The anchor cable extraction component drills holes in the soil in the shield tunnel construction area to form an anchor cable extraction hole (4), and the anchor cable extraction component winds around and extracts the second section. The invention can solve the problem that conventional anchor cable removal methods do not have an anchor cable position detection function and require manual excavation of piles, vertical shafts, or blind excavated passages to extract the anchor cables, which is time-consuming and labor-intensive.

Description

Technical Field

[0001] The present invention relates to shield tunnel construction obstacle removal equipment and method, and in particular to a system and method for removing anchor cables intruding into a shield tunnel section. Background Art

[0002] With the continuous advancement of urbanization in my country, transportation is gradually transitioning from surface to underground to alleviate the growing conflict between population and surface transportation. Shield tunnels, due to their advantages of fast construction speed, convenient construction, and high safety, are gradually becoming the primary form of urban underground rail transit.

[0003] However, due to the influence of existing urban structures, shield tunnels will inevitably encounter obstacles such as anchor cables or anchor rods left over from the construction of underground structures of buildings during construction. Considering that anchor cables invading the shield tunnel section will have an adverse effect on the normal operation of the shield equipment and the entire project schedule, cost, safety, etc., the anchor cables invading the shield tunnel section must be removed before shield construction. The traditional anchor cable removal method is to manually dig piles, vertical shafts or dark excavation channels to the anchor cable position, and then pull out the anchor cable. The traditional anchor cable removal method does not have the function of anchor cable position detection. It not only requires the position of the anchor cable to be clearly identified in advance, but also requires a large amount of ground space, and the operation is time-consuming, labor-intensive, and costly. Therefore, it is necessary to provide a system and method for removing anchor cables that invade the shield tunnel section. Summary of the Invention

[0004] The purpose of the present invention is to provide a system and method for removing anchor cables that have invaded the cross section of a shield tunnel, which can solve the problem that traditional anchor cable removal methods do not have the function of detecting the position of anchor cables and require manual excavation of piles, shafts or dark channels to remove anchor cables, which is time-consuming and labor-intensive.

[0005] The present invention is achieved in that:

[0006] An anchor cable removal system for intruding a shield tunnel section comprises an anchor cable detection assembly, an anchor cable cutting assembly and an anchor cable extraction assembly; the anchor cable cutting assembly respectively drills holes in the soil on both sides of the shield tunnel to form anchor cable cutting boreholes; the anchor cable detection assembly is mounted on the anchor cable cutting assembly so that the anchor cable detection assembly detects the position of the anchor cable as the anchor cable cutting assembly drills; the anchor cable cutting assembly descends along the anchor cable cutting borehole and cuts the anchor cable, cutting the free section of the anchor cable into a first section connected to the anchor cable anchoring section, a second section intruding the shield tunnel section and a third section away from the anchor cable anchoring section; the anchor cable extraction assembly drills a hole in the soil in the shield tunnel construction area to form an anchor cable extraction borehole, and the anchor cable extraction assembly descends along the anchor cable extraction borehole and winds and extracts the second section of the free section of the anchor cable.

[0007] The anchor cable cutting assembly includes a drill rod, a spiral blade, a fixed sleeve, a movable sleeve, a cutting disc, a drill bit and a conical tooth block; the spiral blade is coaxially arranged on the drill rod in a spiral shape, the anchor cable detection assembly is installed on the drill rod, the drill bit is a conical structure and is coaxially arranged at one end of the drill rod, and the other end of the drill rod is externally connected to the drilling rig; the fixed sleeve is coaxially arranged on the outside of the spiral blade, the fixed sleeve is coaxially connected to one end of the movable sleeve, and the other end of the movable sleeve is coaxially and detachably connected to one end of the cutting disc; a plurality of conical tooth blocks are evenly distributed circumferentially on the other end of the cutting disc, and the plurality of conical tooth blocks are arranged around the outside of the drill bit, so that the plurality of conical tooth blocks can cut off the free section of the anchor cable.

[0008] The spiral blade is provided with a cutting edge at one end close to the drill bit. The cutting edge is fixedly connected to the spiral blade, and an obtuse angle is formed between the cutting edge and the drill rod.

[0009] The contact surface between the blade and the spiral blade is in a sawtooth structure, so that the blade and the spiral blade are connected through sawtooth engagement and fixed by welding.

[0010] The anchor detection assembly includes a transmitting antenna, an antenna connecting line, a receiving antenna and an indicator light; the transmitting antenna is arranged at one end of the drill rod and above the drill bit, the receiving antenna and the indicator light are arranged at the other end of the drill rod and on the ground surface, the transmitting antenna is electrically connected to the receiving antenna through the antenna connecting line, and the indicator light is electrically connected to the receiving antenna.

[0011] The transmitting antenna is provided with a protective cover.

[0012] A groove is formed on the surface of the drill rod, the groove is located between the transmitting antenna and the receiving antenna, and the antenna connecting wire is embedded in the groove.

[0013] The anchor cable removal assembly includes a drill rod, a spiral blade, a fixed sleeve, a movable sleeve, a drill bit, a winding cutter disc and a winding rod body; the spiral blade is coaxially arranged on the drill rod in a spiral shape, the drill bit is a conical structure and is coaxially arranged at one end of the drill rod, and the other end of the drill rod is externally connected to the drilling rig; the fixed sleeve is coaxially installed on the outside of the spiral blade, the fixed sleeve is coaxially connected to one end of the movable sleeve, and the other end of the movable sleeve is coaxially and detachably connected to one end of the winding cutter disc; a plurality of winding rod bodies are evenly distributed circumferentially on the other end of the winding cutter disc, and the second section of the free section of the anchor cable can be wound between the plurality of winding rod bodies, and the ends of the plurality of winding rod bodies are conical structures.

[0014] The other end of the winding cutter disc is provided with a plurality of cutting steel plates at intervals, and the plurality of cutting steel plates are circumferentially distributed around the outside of the drill rod, and arc-shaped blades are formed at the edges of the plurality of cutting steel plates; a plurality of winding rod bodies are respectively connected to the plurality of cutting steel plates, and are circumferentially distributed around the outside of the drill bit.

[0015] A method for removing an anchor cable that has invaded a shield tunnel section, comprising the following steps:

[0016] Step 1: Collect basic data on underground structures of buildings surrounding the shield tunnel construction area and roughly determine the basic information of anchor cables that intrude into the shield tunnel section;

[0017] Step 2: Drill holes on both sides of the shield tunnel section using the anchor cable cutting assembly to form anchor cable cutting boreholes. During the drilling process, the anchor cable detection assembly is used to determine the position information of the anchor cable that has intruded into the shield tunnel section, and the projection line of the anchor cable that has intruded into the shield tunnel section on the ground surface is drawn;

[0018] Step 3: According to the location of the anchor cable projection line, the anchor cable cutting assembly is run along the two anchor cable cutting holes to the predetermined depth, and the anchor cable intruding into the shield tunnel section is cut off to release the prestress of the anchor cable. The anchor cable includes an anchor cable anchoring section and an anchor cable free section. The anchor cable free section is cut into a first section connected to the anchor cable anchoring section, a second section intruding into the shield tunnel section, and a third section away from the anchor cable anchoring section. The anchor cable anchoring section and the first and third sections of the anchor cable free section do not affect the normal construction of the shield tunnel and do not need to be processed. Only the second section of the anchor cable free section needs to be removed.

[0019] Step 4: Drill a hole in the shield tunnel construction area using the anchor cable extraction assembly according to the projection line of the anchor cable on the ground surface to form an anchor cable extraction borehole; run the anchor cable extraction assembly along the anchor cable extraction borehole to a predetermined depth, so that the second section of the free section of the anchor cable is wound around the anchor cable extraction assembly, and the anchor cable extraction borehole is pulled out along with the anchor cable extraction assembly;

[0020] Step 5: manually remove the second section of the free section of the anchor cable wrapped around the anchor cable removal assembly on the ground;

[0021] Step 6: Repeat steps 1 to 5 until all anchor cables that have invaded the shield tunnel are removed, and then proceed with shield tunnel excavation.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention is provided with an anchor cable detection component and an anchor cable cutting component. Holes are drilled on both sides of the shield tunnel section by the anchor cable cutting component, and the anchor cable position in the soil is accurately detected by the anchor cable detection component. The anchor cable is then cut off by the anchor cable cutting component, which facilitates the removal of the anchor cable that has invaded the shield tunnel section, ensures that the anchor cable is completely removed, and is conducive to improving the efficiency of anchor cable removal. At the same time, the anchor cable detection and cutting occupy little space, are not limited by application scenarios, and have good universality.

[0024] 2. The present invention is provided with an anchor cable removal component, which is used to drill a hole at the shield tunnel section and use a winding rod to wind the cut second section of the anchor cable free segment. After the anchor cable free segment is cut, the prestressed stress is released, which makes it easy for the winding rod to wind and remove the second section of the anchor cable free segment that has invaded the shield tunnel section. The operation is convenient and safe, the process is simple, the removal cost is low, and there is no need for traditional manual digging, excavation of vertical shafts, and dark excavation of passages. The disturbance of surrounding structures caused by excavation construction is avoided, and the smooth construction of the shield tunnel is ensured. The invention can be widely used in construction projects such as subway tunnels and jacking tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a construction schematic diagram of the anchor cable removal system of the present invention that invades the shield tunnel section to perform anchor cable cutting drilling and anchor cable removal drilling;

[0026] Figure 2 It is a structural schematic diagram of the anchor detection assembly in the anchor removal system for intruding into the shield tunnel section of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the anchor cable cutting assembly in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the anchor cable removal component in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the blade in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0030] Figure 6 It is a plan view of the installation of the cutting disc in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0031] Figure 7 This is a front view of the cutting disc and tapered tooth segments in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0032] Figure 8 It is a plan view of the installation of the wound cutterhead in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0033] Figure 9 This is a front view of the winding cutterhead and winding rod body in the anchor cable removal system for intruding into the shield tunnel section of the present invention;

[0034] Figure 10 Flow chart of the method for removing anchor cables intruding into the cross section of a shield tunnel according to the present invention.

[0035] In the figure, 1. shield tunnel; 2. anchor cable; 201. anchor cable anchoring section; 202. anchor cable free section; 202a. first section; 202b. second section; 202c. third section; 3. anchor cable cutting drilling; 4. anchor cable removal drilling; 5. transmitting antenna; 6. antenna connecting line; 7. receiving antenna; 8. indicator light; 9. drill rod; 10. spiral blade; 11. fixed sleeve; 12. movable sleeve; 13. cutting disc; 14. drill bit; 15. blade; 16. high-strength bolt; 17. tapered tooth block; 18. winding disc; 19. curved blade; 20. winding rod body; 21. cutting steel plate. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Please see the attached Figure 1 , a system for removing anchor cables intruding into a shield tunnel section, comprising an anchor cable detection assembly, an anchor cable cutting assembly and an anchor cable extraction assembly; the anchor cable cutting assembly drills holes in the soil on both sides of the shield tunnel 1 to form anchor cable cutting holes 3; the anchor cable detection assembly is installed on the anchor cable cutting assembly, so that the anchor cable detection assembly detects the position of the anchor cable 2 as the anchor cable cutting assembly drills; the anchor cable cutting assembly descends along the anchor cable cutting hole 3 and cuts the anchor cable 2, cutting the anchor cable free section 202 of the anchor cable 2 into a first section 202a connected to the anchor cable anchoring section 201, a second section 202b intruding into the section of the shield tunnel 1 and a third section 202c away from the anchor cable anchoring section 201; the anchor cable extraction assembly drills holes in the soil in the construction area of ​​the shield tunnel 1 to form an anchor cable extraction hole 4, and the anchor cable extraction assembly descends along the anchor cable extraction hole 4 and winds around and extracts the second section 202b of the anchor cable free section 202.

[0038] The anchor cable detection assembly accurately detects the specific position of the anchor cable 2 during the drilling process of the anchor cable cutting assembly. The anchor cable cutting assembly drills and cuts the anchor cable 2, releasing the prestress in the anchor cable 2, separating it into a free anchor segment 202 and a fixed anchor segment 201, and then cuts the free anchor segment 202 into three sections. The anchor cable removal assembly drills and removes the second segment 202b that intrudes into the cross-section of the shield tunnel 1, ensuring smooth excavation of the shield tunnel 1. The use of drilling to detect, cut, and remove the anchor cable 2 eliminates the need for manual digging, shaft excavation, or tunnel excavation, simplifying the construction process and significantly reducing disturbance to the surrounding soil and structures.

[0039] Please see the attached Figure 3 and attached Figure 7The anchor cable cutting assembly includes a drill rod 9, a spiral blade 10, a fixed sleeve 11, a movable sleeve 12, a cutting disc 13, a drill bit 14 and a conical tooth block 17; the spiral blade 10 is coaxially arranged on the drill rod 9 in a spiral shape, the anchor cable detection assembly is installed on the drill rod 9, the drill bit 14 is a conical structure and is coaxially arranged at one end of the drill rod 9, and the other end of the drill rod 9 is externally connected to the drilling rig; the fixed sleeve 11 is coaxially arranged on the outside of the spiral blade 10, the fixed sleeve 11 is coaxially connected to one end of the movable sleeve 12, and the other end of the movable sleeve 12 is coaxially detachably connected to one end of the cutting disc 13; the other end of the cutting disc 13 is circumferentially evenly distributed with a plurality of conical tooth blocks 17, which are arranged around the outside of the drill bit 14, so that the plurality of conical tooth blocks 17 can cut off the free section 202 of the anchor cable.

[0040] The drill rod 9 can be a cylindrical rod-shaped structure, and the length of the drill rod 9 can be selected according to the buried depth of the anchor cable 2. Through the cooperation of the drill rod 9 and the drilling rig, the cone-shaped drill bit 14 and the spiral blade 10 are rotated and pressed down to form the anchor cable cutting borehole 3. The spiral blade 10 can be welded to the drill rod 9 or integrally formed to assist in cutting the soil and transporting the soil generated by the drilling to the surface, facilitating the drilling of the drill bit 14.

[0041] The fixed sleeve 11 and the spiral blade 10 can be fixed by welding. The height of the fixed sleeve 11 can be selected according to the buried depth of the anchor cable 2. The inner diameter of the fixed sleeve 11 is consistent with the outer diameter of the spiral blade 10. The fixed sleeve 11 and the movable sleeve 12 can be connected and fixed by multiple high-strength bolts 16. The height of the movable sleeve 12 is greater than that of the fixed sleeve 11. It is used to ensure stability during cutting the anchor cable 2 and drilling, and to avoid the occurrence of hole collapse that may be caused when backfilling the anchor cable cut drilled hole 3.

[0042] Please see the attached Figure 6 The cutting disc 13 and the movable sleeve 12 are connected and fixed by multiple high-strength bolts 16. The cutting disc 13 and a plurality of conical tooth segments 17 are integrally formed or welded together. The conical tooth segments 17 are arranged at equal intervals along the circumference of the cutting disc 13. By cooperating with the drill rod 9 and the drilling rig, the drill bit 14, the cutting disc 13, and the conical tooth segments 17 are rotated and pressed down, so that the conical tooth segments 17 can rotate to cut the free section 202 of the anchor cable.

[0043] Please see the attached Figure 5 The spiral blade 10 is provided with a cutting edge 15 at one end close to the drill bit 14 . The cutting edge 15 is fixedly connected to the spiral blade 10 , and an obtuse angle is formed between the cutting edge 15 and the drill rod 9 .

[0044] The blade 15 is provided to improve the ability of the spiral blade 10 to cut the soil. Preferably, the blade 15 can adopt a diamond-shaped structure to further improve the ability of the spiral blade 10 to cut the soil. The blade 15 is welded and fixed to the spiral blade 10.

[0045] Please see the attached Figure 5 The contact surface between the blade 15 and the spiral blade 10 is a serrated structure, so that the blade 15 and the spiral blade 10 are connected by serration bite and welded.

[0046] The serrated structure increases the contact area between blade 15 and spiral blade 10, thereby ensuring a reliable connection between spiral blade 10 and blade 15 and stability during drilling. The length of blade 15 can be adjusted according to the drilling speed of drill rod 9. When the drilling speed of drill rod 9 is slow, the length of blade 15 can be appropriately extended to ensure the quality of the hole.

[0047] Please see the attached Figure 2 The anchor detection assembly includes a transmitting antenna 5, an antenna connecting line 6, a receiving antenna 7 and an indicator light 8; the transmitting antenna 5 is arranged at one end of the drill rod 9 and above the drill bit 14, the receiving antenna 7 and the indicator light 8 are arranged at the other end of the drill rod 9 and on the ground surface, the transmitting antenna 5 is electrically connected to the receiving antenna 7 through the antenna connecting line 6, and the indicator light 8 is electrically connected to the receiving antenna 7.

[0048] When transmitting antenna 5 is powered, its internal LC oscillator circuit emits electromagnetic waves into the soil. Receiving antenna 7, which matches transmitting antenna 5, receives the electromagnetic waves reflected by the soil. When the electromagnetic waves emitted by transmitting antenna 5 encounter obstacles such as anchor cables 2, the electromagnetic wave signal received by receiving antenna 7 changes. This change in the reflected electromagnetic wave's signal strength is used to determine the location and number of anchor cables 2. Indicator light 8, which can be a conventional LED indicator light, emits a high level signal when the reflected electromagnetic wave signal changes, indicating that an anchor cable 2 has been detected. This illuminates indicator light 8, alerting construction personnel that an anchor cable 2 has been detected.

[0049] The transmitting antenna 5 is provided with a protective cover (not shown in the figure), which can protect the transmitting antenna 5 and reduce damage to the transmitting antenna 5 during the drilling process. The protective cover should be made of a material such as plastic that does not affect the propagation of electromagnetic waves and has a certain hardness.

[0050] A groove (not shown) is formed on the surface of the drill rod 9, which is located between the transmitting antenna 5 and the receiving antenna 7. The antenna connecting wire 6 is embedded in the groove and can be protected by an embedded installation method.

[0051] Please see the attached Figure 4 and attached Figure 9The anchor cable removal assembly includes a drill rod 9, a spiral blade 10, a fixed sleeve 11, a movable sleeve 12, a drill bit 14, a winding cutter disc 18 and a winding rod body 20; the spiral blade 10 is coaxially arranged on the drill rod 9 in a spiral shape, the drill bit 14 is a conical structure and is coaxially arranged at one end of the drill rod 9, and the other end of the drill rod 9 is externally connected to the drilling rig; the fixed sleeve 11 is coaxially installed on the outside of the spiral blade 10, the fixed sleeve 11 is coaxially connected to one end of the movable sleeve 12, and the other end of the movable sleeve 12 is coaxially and detachably connected to one end of the winding cutter disc 18; a plurality of winding rod bodies 20 are evenly distributed circumferentially at the other end of the winding cutter disc 18, and the second section 202b of the free section 202 of the anchor cable can be wound between the plurality of winding rod bodies 20, and the ends of the plurality of winding rod bodies 20 are conical structures.

[0052] The structures of the anchor cable removal assembly and the anchor cable cutting assembly are basically the same. The difference between the two is that the bottom of the movable sleeve 12 of the anchor cable cutting assembly is connected to the cutting disc 13, and the bottom of the cutting disc 13 is evenly distributed with conical tooth blocks 17. The bottom of the movable sleeve 12 of the anchor cable removal assembly is connected to the winding disc 18, and the bottom is connected to the winding rod body 20.

[0053] Please see the attached Figure 8 The winding cutter disc 18 and the movable sleeve 12 can be connected and fixed by multiple high-strength bolts 16. In actual use, a set of anchor cable cutting components and the winding cutter disc 18 and its winding rod body 20 can be equipped. The cutting cutter disc 13 and the winding cutter disc 18 can be replaced with high-strength bolts 16 according to usage requirements, which is convenient for production and use.

[0054] The winding cutterhead 18 is welded to or integrally formed with the winding rods 20, and the tapered end of the winding rods 20 facilitates soil breaking. With the cooperation of the drill rod 9 and the drilling rig, the winding cutterhead 18 is pressed down until the second section 202b of the free end 202 of the anchor cable is located between the two winding rods 20. As the winding rods 20 rotate, the second section 202b of the free end 202 of the anchor cable is pulled out of the soil by the winding rods 20 and completely wrapped around them, thereby simultaneously pulling out the anchor cable and removing the borehole 4 as the drill rod 9 is pulled out, thereby achieving the removal of the anchor cable 2.

[0055] Please see the attached Figure 8 The other end of the winding cutter disc 18 is provided with a plurality of cutting steel plates 21 at intervals, and the plurality of cutting steel plates 21 are circumferentially distributed around the outer side of the drill rod 9, and arc-shaped blades 19 are formed at the edges of the plurality of cutting steel plates 21; a plurality of winding rod bodies 20 are respectively connected to the plurality of cutting steel plates 21, and are circumferentially distributed around the outer side of the drill bit 14.

[0056] Preferably, the cutting steel plate 21 can adopt a half-moon structure, and the curved blade 19 improves the soil cutting ability, which is beneficial to the drilling of the drill bit 14 and the spiral blade 10. Three cutting steel plates 21 can be provided, and three winding rods 20 are provided accordingly. The winding cutter head 18, cutting steel plates 21 and winding rods 20 can be welded and fixed or integrally formed, which has high structural strength.

[0057] Please see the attached Figure 1 To the attached Figure 10 A method for removing anchor cables that have invaded a shield tunnel section comprises the following steps:

[0058] Step 1: Collect basic data on the underground structures of buildings surrounding the shield tunnel 1 construction area, and roughly determine the basic information of the anchor cable 2 that intrudes into the section of the shield tunnel 1.

[0059] The basic information of the anchor cables 2 intruding into the cross section of the shield tunnel 1 includes the number, approximate position, length, etc. of the anchor cables 2 .

[0060] Step 2: Anchor cable cutting assemblies are used to drill holes on both sides of the shield tunnel 1 section to form anchor cable cutting boreholes 3. During the drilling process, the position information of the anchor cable 2 invading the shield tunnel 1 section is determined by the anchor cable detection assembly, and the projection line of the anchor cable 2 invading the shield tunnel 1 section on the ground surface is drawn.

[0061] During the drilling and detection process of step 2, the cable anchor cutting assembly may not be equipped with the cutting disc 13, and drilling may be performed only by the spiral blade 10, the drill bit 14 and the blade 15.

[0062] The anchor cable detection component is used to accurately determine the specific position and number of the anchor cable 2. The anchor cable detection component is used to detect on both sides of the construction area of ​​the shield tunnel 1 respectively, and the specific position of the anchor cable 2 that invades the section of the shield tunnel 1 is determined by using a line formed by two points, thereby drawing the projection line of the anchor cable 2 on the surface.

[0063] Step 3: According to the position of the projection line of the anchor cable 2, the anchor cable cutting assembly is run along the two anchor cable cutting holes 3 to a predetermined depth, and the anchor cable 2 that invades the section of the shield tunnel 1 is cut off by the cutting disc 13 and the conical tooth block 17 to release the prestress of the anchor cable 2. The anchor cable 2 includes an anchor cable anchoring section 201 and an anchor cable free section 202, and the anchor cable free section 202 is cut into a first section 202a connected to the anchor cable anchoring section 201, a second section 202b that invades the section of the shield tunnel 1 and a third section 202c away from the anchor cable anchoring section 201. The anchor cable anchoring section 201 and the first section 202a and the third section 202c of the anchor cable free section 202 do not affect the normal construction of the shield tunnel 1, so no processing is required, and only the second section 202b of the anchor cable free section 202 needs to be pulled out.

[0064] After the anchor cable cutting assembly completes the cutting, while the drill rod 9 is pulled out, the anchor cable cutting borehole 3 is backfilled with plain soil to reduce the disturbance to the original stratum.

[0065] Step 4: According to the projection line of the anchor cable 2 on the ground surface, a hole is drilled in the construction area of ​​the shield tunnel 1 by the anchor cable extraction assembly to form an anchor cable extraction borehole 4; the anchor cable extraction assembly is run along the anchor cable extraction borehole 4 to a predetermined depth, so that the second section 202b of the anchor cable free section 202 is wound on the winding rod body 20 of the anchor cable extraction assembly, and the anchor cable extraction borehole 4 is pulled out along with the drill rod 9 of the anchor cable extraction assembly.

[0066] After the anchor cable removal assembly is wound around the anchor cable, while the drill rod 9 is pulled out, the anchor cable removal borehole 4 is backfilled with plain soil to reduce disturbance to the original stratum.

[0067] During the drilling process in step 4, the anchor cable extraction assembly can be drilled using only the spiral blade 10, drill bit 14, and blade 15 without installing the winding cutterhead 18. After the anchor cable extraction drilling hole 4 is completed, the winding cutterhead 18 is installed and the second section 202b of the anchor cable free section 202 is wound and extracted using the winding rod 20.

[0068] Step 5: manually remove the second section 202b of the free segment 202 of the anchor cable wound around the winding rod 20 of the anchor cable removal assembly on the ground.

[0069] Step 6: Repeat steps 1 to 5 until all the anchor cables 2 that have invaded the shield tunnel 1 are removed, and then proceed with the excavation of the shield tunnel 1.

[0070] The shield tunnel 1 can be scanned and inspected for the removal of the anchor cables 2. Only after the inspection is qualified, that is, the anchor cables 2 intruding into the shield tunnel 1 are completely removed, can the excavation operation of the shield tunnel 1 be carried out.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A system for removing anchor cables that have invaded a shield tunnel section, characterized by: The invention comprises an anchor cable detection component, an anchor cable cutting component and an anchor cable removal component; the anchor cable cutting component respectively drills holes in the soil on both sides of the shield tunnel (1) to form anchor cable cutting holes (3); the anchor cable detection component is installed on the anchor cable cutting component so that the anchor cable detection component detects the position of the anchor cable (2) when the anchor cable cutting component is drilled; the anchor cable cutting component descends along the anchor cable cutting hole (3) and cuts off the anchor cable (2), cutting off the anchor cable free section (202) of the anchor cable (2) The anchor cable is cut into a first section (202a) connected to the anchor cable anchoring section (201), a second section (202b) intruding into the cross section of the shield tunnel (1), and a third section (202c) away from the anchor cable anchoring section (201); the anchor cable extraction component drills a hole in the soil of the shield tunnel (1) construction area to form an anchor cable extraction borehole (4), and the anchor cable extraction component descends along the anchor cable extraction borehole (4) and winds around and extracts the second section (202b) of the anchor cable free section (202); The anchor cable cutting assembly comprises a drill rod (9), a spiral blade (10), a fixed sleeve (11), a movable sleeve (12), a cutting disc (13), a drill bit (14) and a conical tooth block (17); the spiral blade (10) is coaxially arranged on the drill rod (9) in a spiral shape, the anchor cable detection assembly is installed on the drill rod (9), the drill bit (14) is conical in structure and coaxially arranged at one end of the drill rod (9), and the other end of the drill rod (9) is externally connected to a drilling rig; the fixed sleeve (11 ) is coaxially mounted on the outside of the spiral blade (10), the fixed sleeve (11) is coaxially connected to one end of the movable sleeve (12), and the other end of the movable sleeve (12) is coaxially detachably connected to one end of the cutting disc (13); the other end of the cutting disc (13) is circumferentially uniformly provided with a plurality of conical tooth blocks (17), and the plurality of conical tooth blocks (17) are arranged around the outside of the drill bit (14), so that the plurality of conical tooth blocks (17) can cut the free section (202) of the anchor cable; The anchor cable removal assembly comprises a drill rod (9), a spiral blade (10), a fixed sleeve (11), a movable sleeve (12), a drill bit (14), a winding cutter disc (18) and a winding rod body (20); the spiral blade (10) is coaxially arranged on the drill rod (9) in a spiral shape, the drill bit (14) is conical in structure and coaxially arranged at one end of the drill rod (9), and the other end of the drill rod (9) is externally connected to a drilling rig; the fixed sleeve (11) is coaxially arranged on the outside of the spiral blade (10), the fixed sleeve (11) is coaxially connected to one end of the movable sleeve (12), and the other end of the movable sleeve (12) is coaxially detachably connected to one end of the winding cutter disc (18); a plurality of winding rod bodies (20) are uniformly distributed circumferentially on the other end of the winding cutter disc (18), the second section (202b) of the anchor cable free section (202) can be wound between the plurality of winding rod bodies (20), and the ends of the plurality of winding rod bodies (20) are conical in structure; The other end of the winding cutter disc (18) is provided with a plurality of cutting steel plates (21) at intervals, and the plurality of cutting steel plates (21) are circumferentially distributed around the outer side of the drill rod (9), and arc-shaped blades (19) are formed at the edges of the plurality of cutting steel plates (21); a plurality of winding rod bodies (20) are respectively connected to the plurality of cutting steel plates (21) and circumferentially distributed around the outer side of the drill bit (14).

2. The system for removing anchor cables intruding into a shield tunnel section according to claim 1 is characterized by: The spiral blade (10) is provided with a cutting edge (15) at one end close to the drill bit (14). The cutting edge (15) is fixedly connected to the spiral blade (10), and an obtuse angle is formed between the cutting edge (15) and the drill rod (9).

3. The system for removing anchor cables intruding into a shield tunnel section according to claim 2 is characterized by: The contact surface between the blade (15) and the spiral blade (10) is a sawtooth structure, so that the blade (15) and the spiral blade (10) are connected by sawtooth engagement and fixed by welding.

4. The system for removing anchor cables intruding into a shield tunnel section according to claim 1 is characterized by: The anchor cable detection assembly comprises a transmitting antenna (5), an antenna connecting line (6), a receiving antenna (7) and an indicator light (8); the transmitting antenna (5) is arranged at one end of the drill rod (9) and is located above the drill bit (14); the receiving antenna (7) and the indicator light (8) are arranged at the other end of the drill rod (9) and are located on the ground surface; the transmitting antenna (5) is electrically connected to the receiving antenna (7) via the antenna connecting line (6); and the indicator light (8) is electrically connected to the receiving antenna (7).

5. The system for removing anchor cables intruding into a shield tunnel section according to claim 4 is characterized by: The transmitting antenna (5) is provided with a protective cover.

6. The system for removing anchor cables intruding into a shield tunnel section according to claim 4 is characterized by: A groove is formed on the surface of the drill rod (9), the groove is located between the transmitting antenna (5) and the receiving antenna (7), and the antenna connecting line (6) is embedded in the groove.

7. A method for removing anchor cables that have invaded a shield tunnel section using the system for removing anchor cables according to claim 1, characterized in that: The following steps are involved: Step 1: Collect basic information on underground structures of buildings surrounding the shield tunnel (1) construction area, and determine basic information on anchor cables (2) that intrude into the shield tunnel (1) section; Step 2: drilling holes on both sides of the shield tunnel (1) section using an anchor cable cutting assembly to form anchor cable cutting boreholes (3); during the drilling process, the anchor cable detection assembly is used to determine the position information of the anchor cable (2) intruding into the shield tunnel (1) section, and a projection line of the anchor cable (2) intruding into the shield tunnel (1) section on the ground surface is drawn; Step 3: according to the position of the projection line of the anchor cable (2), the anchor cable cutting drill holes (3) are respectively run along the two anchor cable cutting holes to a predetermined depth, and the anchor cable (2) intruding into the cross section of the shield tunnel (1) is cut off to release the prestress of the anchor cable (2). The anchor cable (2) includes an anchor cable anchoring section (201) and an anchor cable free section (202), and the anchor cable free section (202) is cut into a first section (202a) connected to the anchor cable anchoring section (201), a second section (202b) intruding into the cross section of the shield tunnel (1), and a third section (202c) away from the anchor cable anchoring section (201). The anchor cable anchoring section (201) and the first section (202a) and the third section (202c) of the anchor cable free section (202) do not affect the normal construction of the shield tunnel (1) and do not need to be processed. Only the second section (202b) of the anchor cable free section (202) needs to be removed. Step 4: according to the projection line of the anchor cable (2) on the ground surface, a hole is drilled in the construction area of ​​the shield tunnel (1) by the anchor cable extraction assembly to form an anchor cable extraction borehole (4); the anchor cable extraction assembly is run along the anchor cable extraction borehole (4) to a predetermined depth, so that the second section (202b) of the anchor cable free section (202) is wound around the anchor cable extraction assembly, and the anchor cable extraction borehole (4) is pulled out along with the anchor cable extraction assembly; Step 5: manually removing the second section (202b) of the anchor cable free section (202) wound on the anchor cable removal assembly on the ground; Step 6: Repeat steps 1 to 5 until all anchor cables (2) intruding into the shield tunnel (1) are removed, and then proceed with the excavation of the shield tunnel (1).

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