Construction method for pile hole collapse treatment after installation of cast-in-place pile reinforcement cage

Abstract

The invention discloses a construction method for pile hole collapse treatment after installation of a cast-in-place pile reinforcement cage, and relates to the technical field of pile hole construction.A percussion drill is used for pressing and damaging the reinforcement cage, the reinforcement cage is disintegrated, and a reinforcement cage residue body and reinforcement cage chippings are obtained; and then a reinforcement cage residue body is taken out through a barrel drill, reinforcement cage chippings are taken out through a residue taking-out barrel, and therefore the reinforcement cage in the collapsed pile hole is taken out. The barrel drill comprises a first drill barrel and a second drill barrel which rotate reversely, so that a first lasso mounted on the first drill barrel and a second lasso mounted on the second drill barrel are wound on the middle portion and the upper portion of a reinforcement cage residue body in the form of opposite rotation directions, the reinforcement cage residue body is hoisted and taken out when the barrel drill is pulled out, the construction success rate is high, and the construction efficiency is improved. And the problem of low efficiency caused by repeated construction is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pile hole construction, and in particular to a construction method for handling pile hole collapse after a cast-in-place pile reinforcement cage is installed. Background Art

[0002] During the pile foundation construction process, steel casing is used as the wall protection, and the steel casing is pressed down until the driving and pulling machine can no longer press down.

[0003] During the actual operation process, some construction sites are close to the river bank; during the pile hole construction process, the installation of the steel cage will disturb the pile hole, causing water erosion and damage to the structure of the bottom of the casing, causing the pile hole to collapse; after the pile hole collapses, the steel cage in the pile hole can neither be further installed nor pulled out, causing difficulties for subsequent construction. Summary of the invention

[0004] In order to overcome the problem of "it is difficult to remove the reinforcement cage after the pile hole collapses" existing in the above-mentioned background technology, the present invention provides a construction method for handling the pile hole collapse after the installation of the reinforcement cage of the cast-in-place pile.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A construction method for treating pile hole collapse after installation of a cast-in-place pile reinforcement cage, comprising the following steps: S1, leveling and compacting the collapsed hole ground, removing soil around a casing, and reserving a connection length for the casing; S2, extending the casing, and using a puller to press the casing down to a bearing layer; S3, backfilling and compacting the soil around the pile hole, with the casing being 400 to 600 millimeters higher than the repaired ground; and S4, destroying and removing the reinforcement cage in the pile hole.

[0006] Among them, step S4 further includes the following steps: S41, using a rotary drilling rig and a barrel drill to press down and twist the steel cage to compress the steel cage; S42, using an impact drill to press down and destroy the steel cage to disintegrate the steel cage to obtain the steel cage residue body and steel cage debris; S43, using a rotary drilling rig and a barrel drill to pull out the steel cage residue body; S43, using a rotary drilling rig and a slag removal barrel to remove the steel cage debris. As a further optimization scheme of the present invention, the barrel drill includes a first drill barrel, the outer wall of the bottom of the first drill barrel is provided with a rotary screw thread for excavation, and the bottom edge of the first drill barrel is provided with rotary excavation teeth for loosening the soil.

[0007] As a further optimization scheme of the present invention, the inner cavity of the first drill barrel is provided with a first lasso for winding around the middle part of the steel cage residue body; the barrel drill also includes a second drill barrel; a second lasso for winding around the upper part of the steel cage residue body is provided at the bottom edge of the second drill barrel; the first drill barrel can rotate and wind the first lasso around the steel cage residue body; the second drill barrel can be inserted into the first drill barrel and rotated in the opposite direction to wind the second lasso around the steel cage residue body in a rotation direction opposite to that of the first lasso.

[0008] As a further optimization scheme of the present invention, two first lassoes are provided and arranged in a U-shape, and the two first lassoes are arranged along the radial direction of the first drill tube; two second lassoes are provided and arranged in a U-shape, and the two second lassoes are arranged along the radial direction of the second drill tube.

[0009] As a further optimization solution of the present invention, both ends of the first lasso are arranged at the bottom of the first drill tube instead of the bottom end; and the second lasso is arranged at the bottom end of the second drill tube.

[0010] As a further optimization scheme of the present invention, the second drill barrel includes a barrel and a plurality of adjustment barrels, the adjustment barrels are arranged in a straight line and are detachably installed at one end of the barrel away from the second lasso; the second lasso is arranged at the bottom end of the barrel; the adjustment barrels are detachably connected to each other.

[0011] As a further optimization solution of the present invention, the distance between two of the first lassoes is greater than the distance between two of the second lassoes.

[0012] As a further optimization scheme of the present invention, step S43 further includes the following steps: S431, installing the first drill barrel on the rotary drilling rig, starting the rotary drilling rig and rotating the first drill barrel counterclockwise down along the pile hole until the first drill barrel is sleeved on the outer periphery of the steel cage residue body and the first lasso is wound around the middle of the steel cage residue body in a counterclockwise direction; S432, releasing the connection between the first drill barrel and the rotary drilling rig, locking and fixing the first drill barrel on the ground around the pile hole; S433, assembling the barrel body and the adjusting barrel of the second drill barrel, and then installing the adjusting barrel on the rotary drilling rig, starting the rotary drilling rig and rotating the second drill barrel along the first drill barrel. The inner cavity rotates clockwise downward until the second lasso is wound around the upper part of the steel cage residue body in a clockwise direction; S434, release the connection between the adjustment tube and the rotary drilling rig; remove part of the adjustment tube to make the remaining height of the second drill tube fit the top edge of the first drill tube; S435, install the extension tube at the top edge of the first drill tube, and use the second bolt to fix the extension tube, the first drill tube and the adjustment tube in connection; S436, connect the top of the extension tube to the rotary drilling rig, release the lock between the first drill tube and the ground around the pile hole, start the rotary drilling rig, and rotate the first drill tube, the second drill tube and the extension tube clockwise upward together and lift out the steel cage residue body.

[0013] As a further optimization scheme of the present invention, step S432 further includes the following steps: S4321, releasing the connection between the first drill tube and the rotary drilling rig; S4322, driving the rotary drilling rig to leave the periphery of the pile hole; S4323, sleeve the support plate on the outer surface of the first drill tube, and use the first bolt to fix the support plate and the first drill tube; S4324, drive the rotary drilling rig and press it onto the support part of the support plate.

[0014] As a further optimization scheme of the present invention, the support plate is provided with a plug-in hole adapted to the first drill barrel, a convex ring is provided on the upper surface of the support plate at the position of the plug-in hole, a first screw hole for screwing the first bolt is opened on the side wall of the convex ring, and a first clamping hole for clamping the first bolt is provided on the side wall of the first drill barrel.

[0015] In summary, the present invention is beneficial in that: The present invention has a simple structure and reliable functions. The steel cage is pressed down and destroyed by an impact drill to disintegrate the steel cage to obtain a steel cage residue body and steel cage debris. Then, the steel cage residue body is taken out by a barrel drill and the steel cage debris is taken out by a slag removal barrel, thereby taking out the steel cage in the collapsed pile hole. The barrel drill includes a first drill barrel and a second drill barrel that rotate in opposite directions, so that a first lasso installed on the first drill barrel and a second lasso installed on the second drill barrel are wound around the middle and upper parts of the steel cage residue body in the form of opposite rotation directions, so that when the barrel drill is pulled out, the steel cage residue body is hoisted and taken out, the construction success rate is high, and the problem of low efficiency caused by repeated construction is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings: Figure 1 is a schematic diagram of the structure of the first drill barrel; Figure 2 This is a schematic diagram of the vertical section front view of the first drill tube; Figure 3 is a schematic diagram of the cross-sectional top view of the first drill tube; Figure 4 This is a schematic diagram of the front view of the second drill tube; Figure 5 It is a schematic diagram of the installation structure of the first drill tube, the second drill tube and the support plate; Figure 6 is a schematic diagram of the cross-sectional top view of the second drill tube; Figure 7 A schematic diagram of the installation positions of the first bolt and the second bolt; Figure 8 It is a schematic diagram of the installation structure of the first drill tube, the adjustment tube, the extension tube and the second bolt; Fig. 9 It is a schematic diagram of the structure of the claw and the limiting bead.

[0017] Description of reference numerals: In the figure, 1. first drill tube; 11. spinning thread; 12. rotary digging tooth; 13. first lasso; 14. support plate; 141. plug hole; 142. convex ring; 1421. first bolt; 143. support part; 2. Second drill tube; 21. Drill body; 22. Second lasso; 23. Adjustment tube; 3. Extension tube; 31. Second bolt; 4. Claws; 5. Limiting beads. DETAILED DESCRIPTION

[0018] Based on the above structural features of the present application, the implementation methods of the present application are further described: The present embodiment provides a construction method for treating the collapsed hole of a bored pile after the installation of a reinforcement cage, the steps comprising: S1, using compaction equipment to level and compact the collapsed hole ground, clearing the soil around the casing, and reserving the connection length of the casing; S2, extending the casing, using a puller to press the casing down to the bearing layer; S3, backfilling and compacting the soil around the pile hole, with the casing being 400 mm to 600 mm higher than the repaired ground, and re-measuring the hole position and elevation; S4, destroying and clearing the reinforcement cage in the pile hole.

[0019] Step S4 further includes: S41, using a rotary drilling rig in conjunction with a barrel drill to press down and twist the steel cage, destroy the skeleton structure of the steel cage, and compress the steel cage into a "twisted" shape; S42, using an impact drill to press down and integrally destroy the steel cage, disintegrate the steel cage, and obtain the steel cage residue body and steel cage debris; S43, using a rotary drilling rig in conjunction with a barrel drill to pull the steel cage residue body out of the pile hole; S43, using a rotary drilling rig in conjunction with a slag removal barrel to remove the steel cage debris.

[0020] Reference Figure 1 and Figure 2 The barrel drill comprises a first drill barrel 1, the bottom outer wall of the first drill barrel 1 is provided with a rotary screw thread 11 for excavation (for example, fixedly connected by welding or fixedly connected in an integrated manner), and the bottom edge of the first drill barrel 1 is provided with a rotary digging tooth 12 for loosening the soil (for example, fixedly connected by welding or fixedly connected in an integrated manner). During the rotation of the barrel drill, the rotary digging tooth 12 cuts the soil layer, and the first drill barrel 1 is pressed down and fills the gap obtained by the cutting, thereby achieving screwing in.

[0021] Reference Figure 2 and Figure 3 The first drill tube 1 has an inner cavity provided with a first lasso 13 for winding around the middle of the steel cage residue body. The two ends of the first lasso 13 are respectively connected to the inner wall of the first drill tube 1; the inner wall of the first drill tube 1 is fixedly connected with a lifting ring (for example, by welding or by an integrated fixed connection), and the end of the first lasso 13 is inserted into the lifting ring and locked by an anchor.

[0022] Reference Figure 4 and Figure 5 The barrel drill also includes a second drill barrel 2; a second lasso 22 for winding around the upper part of the steel cage residue body is provided at the bottom edge of the second drill barrel 2.

[0023] Reference Figure 2 to Figure 6 Two first lassoes 13 are provided and arranged in a two-shaped shape, and the two first lassoes 13 are arranged along the radial direction of the first drill tube 1; two second lassoes 22 are provided and arranged in a two-shaped shape, and the two second lassoes 22 are arranged along the radial direction of the second drill tube 2. The spacing H1 between the two first lassoes 13 is greater than the spacing H2 between the two second lassoes 22, so that the first lasso 13 can be wound around the middle of the steel cage residue body, and the second second lasso 22 can be wound around the upper part of the steel cage residue body.

[0024] Reference Figure 5The first drill tube 1 can rotate and wrap the first lasso 13 around the main body of the steel cage residue; the second drill tube 2 can be inserted into the first drill tube 1 and rotate in the opposite direction, and the second lasso 22 can be wrapped around the main body of the steel cage residue in a rotation direction opposite to that of the first lasso 13. Then, the first lasso 13 and the second lasso 22 can realize the fixed lifting of the main body of the steel cage residue, and prevent the main body of the steel cage residue from rotating and being detached from the first lasso 13 and the second lasso.

[0025] Ginseng Figure 2 , Figure 4 and Figure 5 The two ends of the first lasso 13 are arranged at the bottom of the first drill tube 1 instead of the bottom end. The bottom of the first drill tube 1 is usually inserted to the bottom of the steel cage residue body. Therefore, the first lasso 13 can be wound around the middle of the steel cage residue body instead of the bottom end. When the first lasso 13 moves upward, it can apply a pulling force instead of a pushing force to the steel cage residue body. Therefore, it has higher stability and reduces the problem of the steel cage residue body tilting during the lifting process, resulting in accidental detachment from the first sling. The second lasso 22 is arranged at the bottom end of the second drill tube 2, so that the second lasso 22 can be brought into contact with and wound around the steel cage residue body as soon as possible during the downward process of the second drill tube 2.

[0026] Ginseng Figure 2 , Figure 4 and Figure 5 In a natural state, the first lasso 13 and the second lasso 22 are both in a relaxed state, thereby reserving sufficient length for winding around the main body of the steel cage residue.

[0027] Reference Figure 4 The second drill barrel 2 includes a barrel body 21 and a plurality of adjustment barrels 23. The adjustment barrels 23 are arranged in a straight line and are detachably installed at one end of the barrel body 21 away from the second lasso 22. The adjustment barrels 23 are detachably connected to the barrel body 21 by bolts; the second lasso 22 is arranged at the bottom end of the barrel body 21; the adjustment barrels 23 are detachably connected to each other, and the adjustment barrels 23 are detachably connected to each other by bolts); the top side wall of the barrel body 21 and the top side wall of the adjustment barrel 23 are provided with a countersunk hole structure for accommodating bolts to avoid the problem that the stud of the bolt is stuck in the gap between the second drill barrel 2 and the first drill barrel 1, causing the second drill barrel 2 to be unable to rotate.

[0028] Step S43 further includes the following steps: S431, installing the first drill tube 1 on the rotary drilling rig (for example, sleeve the first drill tube 1 on the drill rod, then screw the connecting lock column on the side wall of the first drill tube 1 that is connected by threads, until the connecting lock column is inserted into the adapter hole on the drill rod and tightened to achieve installation), start the rotary drilling rig and rotate the first drill tube 1 counterclockwise downward along the pile hole until the first drill tube 1 is sleeved on the outer periphery of the steel cage residue body and the first lasso 13 is wound around the middle of the steel cage residue body in a counterclockwise direction; when the first lasso 13 is wound around the steel cage residue body and is in a taut state, the first drill tube 1 stops rotating; S432, releasing the connection between the first drill tube 1 and the rotary drilling rig (for example, unscrewing the connection lock column), and locking and fixing the first drill tube 1 on the ground around the pile hole; S433, assemble the barrel 21 and the adjusting barrel 23 of the second drill barrel 2 with bolts, and then install the adjusting barrel 23 on the rotary drilling rig (for example, sleeve the adjusting barrel 23 on the drill rod, and then screw the connecting lock column on the side wall of the adjusting barrel 23 which is connected by threads, until the connecting lock column is inserted into the adapter hole on the drill rod and tightened to achieve installation), start the rotary drilling rig and rotate the second drill barrel 2 clockwise along the inner cavity of the first drill barrel 1 until the second lasso 22 is wound around the upper part of the steel cage residue body in a clockwise direction; when the second lasso 22 is wound around the steel cage residue body and is in a taut state, the second drill barrel 2 stops rotating; S433, release the connection between the adjusting cylinder 23 and the rotary drilling rig (for example, unscrew the connecting lock column); remove part of the adjusting cylinder 23, so that the remaining height of the second drill tube 2 is adapted to the top edge of the first drill tube 1, that is, the top of the adjusting cylinder 23 that has not been removed and is at the highest position on the second drill tube 2 is slightly higher than the top of the first drill tube 1, so as to avoid the problem that the drill rod cannot be inserted into the extension cylinder 3 later due to the excessive length of the second drill tube 2; S434, installing the extension tube 3 at the top edge of the first drill tube 1, and using the second bolt 31 to fix the extension tube 3, the first drill tube 1 and the adjustment tube 23; S435, connect the top end of the extension tube 3 to the rotary drilling rig (for example, put the extension tube 3 on the drill rod, then screw on the connecting lock column on the side wall of the extension tube 3 which is connected by a thread, insert the connecting lock column into the adapter hole on the drill rod and tighten it to achieve installation), release the lock between the first drill tube 1 and the ground around the pile hole, start the rotary drilling rig and rotate the first drill tube 1, the second drill tube 2 and the extension tube 3 together clockwise upwards and lift out the main body of the steel cage residue.

[0029] Step S432 further includes the following steps: S4321, releasing the connection between the first drill tube 1 and the rotary drilling rig; S4322, the rotary drilling rig moves to leave the periphery of the pile hole; S4323, the support plate 14 is sleeved on the outer surface of the first drill tube 1, and the support plate 14 is fixedly connected to the first drill tube 1 using the first bolt 1421; S4324, the rotary drilling rig moves and is crimped onto the support portion 143 of the support plate 14.

[0030] Reference Figure 5 The support plate 14 is provided with an insertion hole 141 adapted to the first drill tube 1, and a convex ring 142 is provided on the upper surface of the support plate 14 at the position of the insertion hole 141. The convex ring 142 is fixedly connected to the support plate 14 in an integrated manner. A first screw hole for screwing a first bolt 1421 is opened on the side wall of the convex ring 142. A plurality of first screw holes are provided and are arranged at equal intervals in a circular array along the side wall of the convex ring 142. A first clamping hole for clamping the first bolt 1421 is provided on the side wall of the first drill tube 1; the number of the first screw holes is not less than 12, and the first clamping holes are arranged at equal intervals in a circular array along the side wall of the first drill tube 1. Each circle of first clamping holes is a group of first clamping hole groups. The number of first clamping holes in each circle is equal to the number of first screw holes. The first clamping hole group is provided with a plurality of first clamping hole groups and is arranged at equal intervals along the axial direction of the first drill tube 1. In the operation of the present invention, the first drill tube 1 is preferentially fixedly inserted into the soil layer. Therefore, the support plate 14 is sleeved on the side wall of the first drill tube 1 and then rotated, so that the first screw hole can be selectively aligned with the first clamping hole in a first clamping hole group (if necessary, the soil around the pile hole can be thickened or removed to adjust the height of the support plate 14), and then the first bolt 1421 is screwed into the first screw hole and inserted into the first clamping hole.

[0031] Reference Figure 7 and Figure 8, a base hole is provided at the top of the side wall of the first drill tube 1, and the base hole is located above the first clamping hole; the base holes are arranged in a circular array along the side wall of the first drill tube 1 at equal intervals, and the number of base holes is not less than 36; the bottom end of the extension tube 3 can be sleeved and arranged at the top of the first drill tube 1, and the side wall of the bottom end of the extension tube 3 is provided with a second screw hole, and the second screw hole is arranged in a circular array along the extension tube 3 at equal intervals and is matched with the base hole one by one; by increasing the wall thickness of the side wall of the bottom end of the extension tube 3 (for example, the wall thickness extends outward by 3 cm), the length of the second screw hole can be increased, thereby improving the connection stability. A second clamping hole is opened on the side wall of the adjustment tube 23, and the second clamping holes are arranged in a circular array along the side wall of the adjustment tube 23 at equal intervals. Each circle of second clamping holes is a second clamping hole group, and the number of second clamping holes in each circle is equal to the number of first screw holes. The second clamping hole group is provided with a plurality of holes and is arranged at equal intervals along the axial direction of the adjustment tube 23. Since soil is inevitably present at the bottom end of the first drill barrel 1, the soil can exert a supporting force on the second drill barrel 2. Therefore, the rotary drilling rig can control the second drill barrel 2 to align the second clamping holes in a second clamping hole group with the base holes one by one while winding the second lasso 22 around the main body of the steel cage residue. Then, the extension barrel 3 is installed and rotated to align the second clamping holes, the base holes and the second screw holes one by one. Then, the second bolt 31 is screwed into the second screw hole and the end of the second bolt 31 is inserted into the second clamping hole and the base hole, thereby realizing the fixed connection between the first drill barrel 1, the second drill barrel 2 and the extension barrel 3.

[0032] In the present invention, since the steel cage residue body is obtained after the steel cage is torsionally damaged, there will be steel bar segments on the surface of the steel cage residue body due to the steel bar breakage, and the first lasso 13 and the second lasso 22 can be wound around the steel cage residue body with the help of the steel bar segments.

[0033] Reference Fig. 9 The first lasso 13 and the second lasso 22 are respectively fixedly mounted with claws 4, which are used to clamp the steel bar segment, thereby improving the connection force between the first lasso 13 and the second lasso 22 and the steel cage residue body, and improving the success rate of lifting the steel cage residue body.

[0034] Reference Fig. 9 The surfaces of the first lasso 13 and the second lasso 22 are respectively provided with limiting beads 5, and the limiting beads 5 are used to limit the claws 4 and at the same time enable the first lasso 13 and the second lasso 22 to maintain a certain bending ability.

[0035] Reference Figure 5 The support plate 14 is a flat plate structure, and the support portion 143 is arranged on the upper surface of the support plate 14; during step S4324, the running parts (such as wheels and tracks) of the rotary drilling rig are pressed onto the support portion 143, and the weight of the rotary drilling rig is used to prevent the first drill tube 1 from rotating when the second drill tube 2 is rotated downward.

[0036] Reference Figure 7 In step S435, the first bolt 1421 is removed to release the lock between the first drill tube 1 and the support plate 14, thereby releasing the lock between the first drill tube 1 and the ground around the pile hole.

[0037] The present invention has a simple structure and reliable functions. The steel cage is pressed down and destroyed by an impact drill to disintegrate the steel cage to obtain a steel cage residue body and steel cage debris. Then, the steel cage residue body is taken out by a barrel drill and the steel cage debris is taken out by a slag removal barrel, thereby taking out the steel cage in the collapsed pile hole. The barrel drill includes a first drill barrel 1 and a second drill barrel 2 that rotate in opposite directions, so that a first lasso 13 installed on the first drill barrel 1 and a second lasso 22 installed on the second drill barrel 2 are wound around the middle and upper parts of the steel cage residue body in the form of opposite rotation directions, so that the steel cage residue body is hoisted and taken out when the barrel drill is pulled out, the construction success rate is high, and the problem of low efficiency caused by repeated construction is avoided.

[0038] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. A construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage, characterized in that the steps include: S1. Level and compact the collapsed hole ground, remove the soil around the casing, and reserve the connection length of the casing; S2. Extend the casing and use a pulling machine to press the casing down to the bearing layer; S3, backfill and compact the soil around the pile hole, and the casing is 400 mm to 600 mm higher than the repaired ground; S4. Destroy and remove the steel cage in the pile hole; Step S4 further The following steps are included: S41, using a rotary drilling rig and a barrel drill to press down and twist the steel cage to compress the steel cage; S42, using an impact drill to press down and destroy the steel cage to disintegrate the steel cage to obtain a main body of the steel cage residue and steel cage debris; S43, using a rotary drilling rig and a barrel drill to pull out the main body of the steel cage residue; S43. Use a rotary drilling rig and a slag removal barrel to remove the steel cage debris.

2. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 1, characterized in that: The barrel drill comprises a first drill barrel (1), the outer wall of the bottom of the first drill barrel (1) is provided with a rotary screw thread (11) for excavation, and the bottom edge of the first drill barrel (1) is provided with rotary excavation teeth (12) for loosening soil.

3. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 2, characterized in that: The inner cavity of the first drill tube (1) is provided with a first lasso (13) for winding around the middle part of the steel cage residue body; The barrel drill also includes a second drill barrel (2); a second lasso (22) for winding around the upper part of the steel cage residue body is provided at the bottom edge of the second drill barrel (2); The first drill tube (1) is capable of rotating and winding the first lasso (13) around the main body of the steel cage residue; the second drill tube (2) is capable of being inserted into the first drill tube (1) and rotating in the opposite direction, winding the second lasso (22) around the main body of the steel cage residue in a rotation direction opposite to that of the first lasso (13).

4. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 3, characterized in that: Two first lassoes (13) are provided and arranged in a U-shape, and the two first lassoes (13) are both arranged along the radial direction of the first drill tube (1); two second lassoes (22) are provided and arranged in a U-shape, and the two second lassoes (22) are both arranged along the radial direction of the second drill tube (2).

5. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 4, characterized in that: Both ends of the first lasso (13) are arranged at the bottom of the first drill tube (1) rather than at the bottom end; and the second lasso (22) is arranged at the bottom end of the second drill tube (2).

6. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 5, characterized in that: The second drill tube (2) comprises a tube body (21) and a plurality of adjustment tubes (23); the adjustment tubes (23) are arranged in a straight line and are detachably mounted on an end of the tube body (21) away from the second lasso (22); the second lasso (22) is arranged at the bottom end of the tube body (21); and the adjustment tubes (23) are detachably connected to each other.

7. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 6, characterized in that: The distance between the two first lassoes (13) is greater than the distance between the two second lassoes (22).

8. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 7, characterized in that: Step S43 further The following steps are included: S431, installing the first drill tube (1) on the rotary drilling rig, starting the rotary drilling rig and rotating the first drill tube (1) counterclockwise downward along the pile hole until the first drill tube (1) is sleeved on the outer periphery of the steel cage residue body and the first lasso (13) is wound around the middle of the steel cage residue body in a counterclockwise direction; S432, releasing the connection between the first drill tube (1) and the rotary drilling rig, and locking and fixing the first drill tube (1) on the ground around the pile hole; S433, assembling the barrel (21) and the adjusting barrel (23) of the second drill barrel (2), then installing the adjusting barrel (23) on the rotary drilling rig, starting the rotary drilling rig and rotating the second drill barrel (2) clockwise downward along the inner cavity of the first drill barrel (1) until the second lasso (22) is wound around the upper part of the steel cage residue body in a clockwise direction; S434, releasing the connection between the adjustment tube (23) and the rotary drilling rig; removing part of the adjustment tube (23) so that the remaining height of the second drill tube (2) is adapted to the top edge of the first drill tube (1); S435, installing the extension tube (3) at the top edge of the first drill tube (1), and using a second bolt (31) to fix the extension tube (3), the first drill tube (1) and the adjustment tube (23) together; S436, connecting the top of the extension tube (3) to the rotary drilling rig, releasing the lock between the first drill tube (1) and the ground around the pile hole, starting the rotary drilling rig, and rotating the first drill tube (1), the second drill tube (2) and the extension tube (3) together clockwise and upward, and lifting out the main body of the steel cage residue.

9. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 8, characterized in that: Step S432 further includes the following steps: S4321, releasing the connection between the first drill tube (1) and the rotary drilling rig; S4322, the rotary drilling rig moves away from the periphery of the pile hole; S4323, sleeve the support plate (14) onto the outer surface of the first drill tube (1), and use a first bolt (1421) to fix the support plate (14) and the first drill tube (1); S4324: The rotary drilling rig travels and is pressed onto the support portion (143) of the support plate (14).

10. The construction method for treating pile hole collapse after installation of cast-in-place pile reinforcement cage according to claim 9, characterized in that: The support plate (14) is provided with an insertion hole (141) adapted to the first drill tube (1); a convex ring (142) is provided on the upper surface of the support plate (14) at the position of the insertion hole (141); a first screw hole for screwing a first bolt (1421) is provided on the side wall of the convex ring (142); and a first clamping hole for clamping the first bolt (1421) is provided on the side wall of the first drill tube (1).

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