CN113123334B - Anchor cable treatment and stratum reinforcement integrated construction method - Google Patents
Anchor cable treatment and stratum reinforcement integrated construction method Download PDFInfo
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- CN113123334B CN113123334B CN202110435869.9A CN202110435869A CN113123334B CN 113123334 B CN113123334 B CN 113123334B CN 202110435869 A CN202110435869 A CN 202110435869A CN 113123334 B CN113123334 B CN 113123334B
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- drill bit
- anchor cable
- plate
- anchor
- safety protection
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 230000002787 reinforcement Effects 0.000 title claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 46
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 53
- 238000003756 stirring Methods 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 238000013461 design Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 206010028347 Muscle twitching Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
Abstract
The invention discloses an anchor cable treatment and stratum reinforcement integrated construction method, which comprises the following steps that a, a drill bit on a mixing pile machine is lowered into a groove formed in a concrete enclosing structure; b. spraying cement slurry into a groove formed in the concrete enclosure structure, and twisting off an anchor cable extending out of the concrete enclosure structure through a drill bit; c. and cutting off the anchor cable wound on the drill bit. In the construction process, stratum reinforcement and anchor cable treatment are simultaneously constructed, cement paste can be timely backfilled in a groove formed by the concrete enclosure structure, the anchor cable can be wound and twisted off, the extended anchor cable can be quickly treated, the construction risk can be reduced, the safety is improved, the treatment is quick, and the cost for treating the anchor cable in construction is reduced.
Description
Technical Field
The invention belongs to the technical field of subway construction anchor cable treatment, and particularly relates to an anchor cable treatment and stratum reinforcement integrated construction method.
Background
With the rapid development of urban construction, the problems of traffic jam, limited land resources and the like become a serious problem for the development of subway construction. In the early stage, most underground building enclosing structures adopt a support system of drilled piles and anchor cables, subway planning construction is relatively late, and most underground building enclosing structures are distributed in areas with dense buildings, so that the condition that the anchor cables invade subway stations and inter-section tunnels exists in the subway construction process, and how to safely and quickly process the underground anchor cables becomes a great problem in subway construction.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides an anchor cable treatment and stratum reinforcement integrated construction method, wherein stratum reinforcement and anchor cable treatment are simultaneously constructed, cement paste can be timely backfilled in a groove formed by a concrete enclosing structure, so that the anchor cable can be wound and twisted off, the extended anchor cable can be quickly treated, the construction risk can be reduced, the safety is improved, the treatment is quick, and the cost for treating the anchor cable in construction is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the anchor cable treatment and stratum reinforcement integrated construction method is characterized by comprising the following steps of:
a. aiming at the anchor cable extending out of the concrete enclosure structure, an experienced operator is arranged to lower the drill bit on the mixing pile machine into the groove formed by the concrete enclosure structure, and the lowering speed is less than or equal to 1 m/min. According to the depth of the anchor cable on the concrete envelope, the drill bit is touched with the anchor cable;
b. spraying cement slurry into a groove formed in the concrete enclosure structure by using a mixing pile machine, controlling the grouting pressure to be 0.6MPa, controlling the cement doping amount to be more than or equal to 20 percent (538.2 kg/m), controlling the water-cement ratio to be 1: 1.5 (water 1000 kg: cement 667 kg), controlling the mud specific gravity to be 1.36g/cm, simultaneously rotating a drill bit, controlling the rotating speed of the drill bit to be 56r/min, twisting off an anchor rope extending out of the concrete enclosure structure by using the drill bit, lifting the drill bit on the mixing pile machine out of the ground after the anchor rope is twisted off, and controlling the lifting speed to be less than or equal to 0.5 m/min;
c. and cleaning the drill bit, and cutting off the anchor cable wound on the drill bit.
Stratum reinforcement and anchor rope are handled and are under construction simultaneously, and grout can in time backfill in the recess that the concrete enclosure structure formed, can twine and twist off the anchor rope, handles fast to the anchor rope that stretches out, can reduce the construction risk again, improves the security, handles swiftly, reduces the expense that the anchor rope was handled in the construction.
Furthermore, in the construction process, the anchor cable on the drill bit needs to be cut off, the anchor cable is high in elasticity, and the cut anchor cable is prone to rebound and hurt people. Aiming at the technical problem, the invention carries out safety protection design in the process of cutting off the anchor cable, and specifically comprises the following steps:
in step c, adopt anchor rope cutting protection device to carry out safety protection to operating personnel, anchor rope cutting protection device includes safety guard plate, bracing piece and mounting bracket, and on the safety guard plate located the bracing piece, on the mounting bracket was located to the bracing piece, wasing the drill bit again, then cut off winding anchor rope on the drill bit, concrete step is:
(1) the first bolt is driven into the ground, the fixed seat at the bottom of the mounting frame is arranged on the first bolt, the first nut is screwed into the first bolt, and the mounting frame is fixed on the ground.
(2) Twist two second nuts on single bracing piece to set up the second nut to the central point of bracing piece puts, adorns two safety protection plate again on two bracing pieces, and two safety protection plate symmetries set up, slide into the stopper on single bracing piece after that, set up safety protection plate between second nut and stopper.
(3) The outer end welding connecting block at the bracing piece is gone into the draw-in groove of mounting bracket with the connecting block card again, lets in first threaded rod on the connecting block after that, and first threaded rod passes the groove of sliding of mounting bracket, then all twists the third nut at the both ends of first threaded rod.
(4) According to the height of cutting off the anchor cable, the first threaded rod moves up and down in the sliding groove, the height of the bottom surface of the safety protection plate from the ground is adjusted, after the adjustment is completed, tightening the third nut on the side surface of the mounting frame, and according to the range of cutting off the anchor cable, two safety protection plates slide on the supporting rod to adjust the positions of the safety protection plates on the supporting rod, simultaneously, the distance between the two safety protection plates is adjusted, after the adjustment is finished, the second nut is screwed on the thread section of the supporting rod, and screwed on the side surface of the safety protection plate, and then the limiting block is moved on the supporting rod to be tightly attached to the other side surface of the safety protection plate, then the locking part on the limiting block is screwed up, the locking part is tightly pressed against the thread section of the supporting rod, and the limiting block and the second nut are adopted to clamp the safety protection plate tightly, so that the safety protection plate is positioned on the supporting rod.
(5) After the drill bit on will stirring the stake machine is proposed ground, in the region between two safety protection board with the drill bit on the stirring stake machine falls, wash the drill bit again, adopt the stick to choose the anchor rope that length exceeded safety protection board on the drill bit on the inclined plate of putting the safety protection board top after that, then adopt cutting device will place the anchor rope on the inclined plate and cut, after the cutting is accomplished, adopt cutting device to cut surplus winding anchor rope on the drill bit, will stir the drill bit on the stake machine and propose the region between two safety protection board again, then retrieve the anchor rope in the region between two safety protection board.
The first threaded rod can move up and down in the sliding groove, and the height of the bottom surface of the safety protection plate from the ground is adjusted, so that the setting height of the safety protection plate can adapt to the cutting operation of the anchor cable; simultaneously according to the scope of cutting off the anchor rope, can adjust the distance between two safety protection board for the drill bit on the stirring stake machine can stretch into in the region between two safety protection board, and can choose longer anchor rope and put on the hang plate at safety protection board top. Therefore, the cutting device can be firstly placed on the inclined plate at the top of the safety protection plate for cutting, in the cutting process, part of the anchor cables can rebound to the safety protection plate, the length of the anchor cables wound by the drill bit is shortened, most of the anchor cables wound on the drill bit are shorter, the rebound range of the shorter anchor cables is obviously smaller than that of the longer anchor cables, then the remaining wound anchor cables on the drill bit are cut, part of the anchor cables can rebound to the safety protection plate, safety protection is carried out on operators, the safety of the cut anchor cables is improved, meanwhile, most of the cut anchor cables are concentrated in the area between the two safety protection plates, and the anchor cables can be conveniently and quickly recovered.
Further, when the anchor rope was chosen on the hang plate of putting the safety protection plate top, flare-outing this anchor rope along the hang plate, adopt cutting device to cut the anchor rope of placing on the hang plate again, exert the effort to longer anchor rope, can carry out the cutting of biggest length to longer anchor rope.
Furthermore, this stirring stake machine adopts triaxial stirring stake machine, improves the winding capacity of anchor rope on the drill bit, can twine and twist and cut off the processing to the anchor rope fast, in order to accelerate effect efficiency, the quantity of multiplicable triaxial stirring stake machine.
Further, aiming at the condition that the anchor cables extending out of the concrete enclosure structure are distributed in rows, if the anchor cables are wound by the drill bit on the mixing pile machine, the anchor cables are not easy to wind and twist, so that the construction method is improved, and the anchor cables need to be positioned on the drill bit and then twisted and broken. The specific scheme is as follows:
this stirring stake machine adopts unipolar stirring stake machine, install the crooked positioner of anchor rope on the drill bit on unipolar stirring stake machine, the crooked positioner of anchor rope is including embracing tightly structure and compact structure, compact structure installs and is embracing tightly structurally, it includes the hoop board that embraces that two symmetries set up to embrace the structure, through second bolt fixed connection between two hoop boards, the hoop board is equipped with the arc through-hole, the centre of a circle of arc through-hole and the centre of a circle of hoop board are in on the same point, compact structure is including connecting the end, rotor plate and anchor rope pressure strip, it is equipped with the second threaded rod to connect the end, the second threaded rod passes the arc through-hole, threaded connection has the fourth nut on the second threaded rod, it has two otic placodes to connect the end welding, the rotor plate is located between two otic placodes, the rotor plate rotates on the otic placode through the pivot, the pressure strip chucking is on the rotor plate, concrete step is as follows:
(1) the two hoop plates are symmetrically and tightly held on the drill bit, lifted to the designed height of the drill bit, and then fixedly connected to the drill bit through the second bolts.
(2) The connection end is arranged on the hoop plate, the second threaded rod is introduced into the connection end from top to bottom, the second threaded rod penetrates through the arc-shaped through hole of the hoop plate, the second threaded rod is matched with the arc-shaped through hole, the fourth nut is screwed into the second threaded rod, the second threaded rod is rotated in the arc-shaped through hole, the connection end is further rotated on the hoop plate, the position of the rotation plate on one side of a drill bit is adjusted, the fourth nut on the second threaded rod is screwed on the connection end after adjustment is completed, then horizontal acting force is applied to the anchor cable compression plate on the rotation plate, and the clamping groove on one side of the anchor cable compression plate is clamped into the rotation plate.
(3) And (3) lowering the drill bit on the mixing pile machine into a groove formed in the concrete enclosing structure, and meanwhile, arranging the drill bit on one side of the anchor cable to be processed.
(4) The anchor cable pressing plate is applied with acting force, the rotating plate is rotated in the direction far away from the drill bit on the lug plate, the anchor cable pressing plate is opened, the mixing pile machine is moved in the direction of the anchor cable needing to be processed, the anchor cable needing to be processed enters the area between the drill bit and the anchor cable pressing plate, the anchor cable needing to be processed is wound on the drill bit, and then the rotating plate is rotated in the direction close to the drill bit on the lug plate, so that the anchor cable pressing plate is pressed on the anchor cable wound on the drill bit.
(5) The single-shaft mixing pile machine is adopted to spray cement slurry into the groove formed by the concrete enclosure structure, the drill bit is rotated simultaneously, the anchor cable extending out of the concrete enclosure structure is twisted and broken through the drill bit and the anchor cable pressing plate, and the drill bit on the mixing pile machine is lifted out of the ground after the anchor cable is twisted and broken.
(6) The drill bit is cleaned, the anchor cable wound on the drill bit is cut off, and the rotating plate is rotated in the direction away from the drill bit on the lug plate, so that the anchor cable pressing plate is opened, and the anchor cable is recycled.
The rotary plates are rotated on the lug plates, the rotary plates and the two lug plates can be in interference fit, so that the rotary plates can rotate on the lug plates only by a certain acting force, the anchor cable pressing plates can be opened and pressed through the rotation of the rotary plates, when the anchor cable pressing plates are in an opened state, the anchor cables distributed in rows can extend into an area between the drill bit and the anchor cable pressing plates, the anchor cables are wound on the drill bit, then the anchor cable pressing plates are pressed on the anchor cables wound on the drill bit, so that the wound anchor cables have a certain acting force on the drill bit, when the drill bit rotates, the anchor cables in the rows can be uniformly twisted off, the twisted-off anchor cables are wound on the drill bit, and the twisted-off anchor cables can be intensively wound and twisted off. And through rotating the second threaded rod in the arc through-hole, and then make the connection end rotate on the staple bolt board, the position of adjustable rotor plate in drill bit one side, and then the anchor rope pressure strip is adjusted and the position that compresses tightly of anchor rope is changeed to the anchor rope for the anchor rope that has certain elasticity is changeed and is twined on the drill bit. After the drill bit on the mixing pile machine is lifted out of the ground, the anchor cable wound on the drill bit is cut off, so that the anchor cable is distributed on the drill bit in order, the rotating plate is rotated in the direction away from the drill bit on the lug plate, the anchor cable pressing plate is opened, the anchor cable is recycled, and the situation that the anchor cable cannot be taken out of the drill bit due to too many wound positions of the anchor cable is avoided.
Furthermore, before a drill bit on the mixing pile machine is lowered into a groove formed in the concrete enclosure structure, measurement and positioning are carried out on the ground, the point position of the mixing pile machine is determined, the point position of the mixing pile machine corresponds to an anchor cable extending out of the concrete enclosure structure, when the anchor cable extends into an area between the drill bit and an anchor cable pressing plate, the anchor cable is made to be close to the drill bit as far as possible, and the anchor cable is conveniently wound on the drill bit in advance.
And further, after the cement paste is cured, sampling in the cured structure, testing the compressive strength of the concrete, and adjusting the parameters of the cement paste through the testing of the compressive strength of the concrete so that the compressive strength of the concrete meets the design requirements.
Due to the adoption of the technical scheme, the invention has the following beneficial effects.
1. In the construction process, stratum reinforcement and anchor cable treatment are simultaneously constructed, cement paste can be timely backfilled in a groove formed by the concrete enclosure structure, the anchor cable can be wound and twisted off, the extended anchor cable can be quickly treated, and the construction risk and the cost for treating the anchor cable in construction can be reduced.
2. The first threaded rod can move up and down in the sliding groove, and the height of the bottom surface of the safety protection plate from the ground is adjusted, so that the setting height of the safety protection plate can adapt to the cutting operation of the anchor cable; simultaneously according to the scope of cutting off the anchor rope, can adjust the distance between two safety protection board for the drill bit on the stirring stake machine can stretch into in the region between two safety protection board, and can choose longer anchor rope and put on the hang plate at safety protection board top. Therefore, the anchor cable cutting device can be firstly placed on the inclined plate at the top of the safety protection plate to be cut, part of the anchor cables can rebound to the safety protection plate in the cutting process, the length of the anchor cables wound by the drill bit is shortened, the rest of the wound anchor cables on the drill bit are cut, part of the anchor cables can rebound to the safety protection plate, safety protection is carried out on operators, and meanwhile, most of the cut anchor cables are concentrated in the area between the two safety protection plates, so that the anchor cables can be conveniently and quickly recovered.
3. The rotary plates are rotated on the lug plates, the rotary plates and the two lug plates can be in interference fit, so that the rotary plates can rotate on the lug plates only by a certain acting force, the anchor cable pressing plates can be opened and pressed through the rotation of the rotary plates, when the anchor cable pressing plates are in an opened state, the anchor cables distributed in rows can extend into an area between the drill bit and the anchor cable pressing plates, the anchor cables are wound on the drill bit, then the anchor cable pressing plates are pressed on the anchor cables wound on the drill bit, so that the wound anchor cables have a certain acting force on the drill bit, when the drill bit rotates, the anchor cables in the rows can be uniformly twisted off, the twisted-off anchor cables are wound on the drill bit, and the twisted-off anchor cables can be intensively wound and twisted off. And through rotating the second threaded rod in the arc through-hole, and then make the connection end rotate on the staple bolt board, the position of adjustable rotor plate in drill bit one side, and then the anchor rope pressure strip is adjusted and the position that compresses tightly of anchor rope is changeed to the anchor rope for the anchor rope that has certain elasticity is changeed and is twined on the drill bit. After the drill bit on the mixing pile machine is lifted out of the ground, the anchor cable wound on the drill bit is cut off, so that the anchor cable is distributed on the drill bit in order, the rotating plate is rotated in the direction away from the drill bit on the lug plate, the anchor cable pressing plate is opened, the anchor cable is recycled, and the situation that the anchor cable cannot be taken out of the drill bit due to too many wound positions of the anchor cable is avoided.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the construction of the present invention in a configuration in which an anchor cable is picked up and laid down on an inclined plate at the top of a safety fender;
fig. 2 is a schematic structural view of the anchor cable cutting protection device in the invention;
FIG. 3 is a schematic view of the safety guard of the present invention;
FIG. 4 is a schematic structural view of a support rod according to the present invention;
FIG. 5 is a schematic structural view of a mount of the present invention;
FIG. 6 is a schematic structural view of an anchor cable bending positioning device according to the present invention;
FIG. 7 is a schematic view of the pressing structure of the present invention;
FIG. 8 is a schematic structural view of a clasping structure of the present invention;
FIG. 9 is a schematic view of the present invention in the configuration for lowering a drill bit on a mixing pile machine into a recess formed in a concrete containment structure;
fig. 10 is a schematic view of the anchor cable hold-down plate of the present invention shown open;
fig. 11 is a schematic view of the present invention in a configuration in which the cable hold down plate compresses the cable around the drill bit.
In the figure, 1-safety guard; 2-a support rod; 3-mounting a frame; 4-a drill bit; 5, anchor cable; 6-a first bolt; 7-a first nut; 8-a second nut; 9-a limiting block; 10-a locking member; 11-connecting blocks; 12-a first threaded rod; 13-a third nut; 14-a card slot; 15-a threaded section; 16-a slipping groove; 17-a fixed seat; 18-an inclined plate; 19-a hoop plate; 20-an arc-shaped through hole; 21-a second bolt; 22-a second threaded rod; 23-a fourth nut; 24-a connection terminal; 25-ear plate; 26-a rotating shaft; 27-a rotating plate; 28-anchor cable pressing plates; 29-concrete containment structure.
Detailed Description
In the first embodiment of the present invention, the first,
the anchor cable treatment and stratum reinforcement integrated construction method comprises the following steps:
a. aiming at the anchor cable extending out of the concrete enclosure structure, an experienced operator is arranged to lower the drill bit on the mixing pile machine into the groove formed by the concrete enclosure structure, and the lowering speed is less than or equal to 1 m/min. And according to the depth of the anchor cable on the concrete envelope, contacting the drill bit with the anchor cable.
b. The method comprises the steps of spraying cement slurry into a groove formed in the concrete enclosure structure by using a mixing pile machine, controlling the grouting pressure to be 0.6MPa, controlling the cement doping amount to be more than or equal to 20% (538.2 kg/m), controlling the water-cement ratio to be 1: 1.5 (water 1000 kg: cement 667 kg), controlling the mud specific gravity to be 1.36g/cm, rotating a drill bit at the same time, controlling the rotating speed of the drill bit to be 56r/min, twisting off an anchor rope extending out of the concrete enclosure structure through the drill bit, lifting the drill bit on the mixing pile machine out of the ground after the anchor rope is twisted off, and controlling the lifting speed to be less than or equal to 0.5 m/min.
c. And cleaning the drill bit, and cutting off the anchor cable wound on the drill bit.
Stratum reinforcement and anchor rope are handled and are under construction simultaneously, and grout can backfill in time in the recess that the concrete enclosure structure formed, can twine and twist off the anchor rope, handle the anchor rope that stretches out fast, can reduce the expense that the anchor rope was handled in the construction risk and the construction again.
In the second embodiment of the present invention, the first embodiment,
as shown in fig. 1 to 5, the anchor cable treatment and stratum consolidation integrated construction method includes the following steps:
a. aiming at the anchor cable extending out of the concrete enclosure structure, an experienced operator is arranged to lower the drill bit on the mixing pile machine into the groove formed by the concrete enclosure structure, and the lowering speed is less than or equal to 1 m/min. And according to the depth of the anchor cable on the concrete envelope, contacting the drill bit with the anchor cable.
b. The method comprises the steps of spraying cement slurry into a groove formed in the concrete enclosure structure by using a mixing pile machine, controlling the grouting pressure to be 0.6MPa, controlling the cement doping amount to be more than or equal to 20% (538.2 kg/m), controlling the water-cement ratio to be 1: 1.5 (water 1000 kg: cement 667 kg), controlling the mud specific gravity to be 1.36g/cm, rotating a drill bit at the same time, controlling the rotating speed of the drill bit to be 56r/min, twisting off an anchor rope extending out of the concrete enclosure structure through the drill bit, lifting the drill bit on the mixing pile machine out of the ground after the anchor rope is twisted off, and controlling the lifting speed to be less than or equal to 0.5 m/min.
c. And cleaning the drill bit, and cutting off the anchor cable wound on the drill bit.
In the construction process, the anchor cable on the drill bit needs to be cut off, the anchor cable has high elasticity, and the cut anchor cable is easy to rebound and hurt people. Aiming at the technical problem, the invention carries out safety protection design in the process of cutting off the anchor cable, and specifically comprises the following steps:
in step c, adopt anchor rope cutting protection device to carry out safety protection to operating personnel, anchor rope cutting protection device includes safety guard plate 1, bracing piece 2 and mounting bracket 3, and safety guard plate 1 is located on bracing piece 2, and bracing piece 2 is located on mounting bracket 3, washs the drill bit again, then cuts off winding anchor rope on the drill bit, and concrete step is:
(1) the first bolt 6 is driven into the ground, the fixed seat 17 at the bottom of the mounting frame 3 is arranged on the first bolt 6, the first nut 7 is screwed into the first bolt 6, and the mounting frame 3 is fixed on the ground.
(2) Two second nuts 8 are screwed into the single supporting rod 2, the second nuts 8 are arranged on the central position of the supporting rod 2, and the second nuts 8 are prevented from blocking the safety protection plate 1 to move on the supporting rod 2. Two safety protection plate 1 are adorned again on two spinal branch vaulting poles 2, two 1 symmetry settings of safety protection plate, slide into stopper 9 on single bracing piece 2 after that, set up safety protection plate 1 between second nut 8 and stopper 9, adopt second nut 8 and stopper 9 to fix a position safety protection plate 1, because the distance between two safety protection plate 1 is great, consequently, adopt second nut 8 to carry on spacingly on safety protection plate 1's inboard, reduce cost, and the distance between safety protection plate 1 and bracing piece 2 is less, inconvenient the nut of twitching, consequently, adopt stopper 9 to carry on spacingly to safety protection plate 1's the outside, it goes on in stopper 9's below to twitch retaining member 10 on stopper 9, operating space is great, be convenient for quick adjustment stopper 9.
(3) The outer end of the supporting rod 2 is welded with a connecting block 11, the connecting block 11 is clamped into a clamping groove 14 of the mounting frame 3, then a first threaded rod 12 is led into the connecting block 11, the first threaded rod 12 penetrates through a sliding groove 16 of the mounting frame 3, and then third nuts 13 are screwed into two ends of the first threaded rod 12.
(4) According to the height of cutting off the anchor cable, the first threaded rod 12 moves up and down in the sliding groove 16, the height of the bottom surface of the safety protection plate 1 from the ground is adjusted, and after the adjustment is completed, the third nut 13 is screwed on the side surface of the mounting frame 3. According to the scope of cutting off anchor rope again, two safety protection board 1 of sliding on bracing piece 2, adjust safety protection board 1 position on bracing piece 2, adjust the distance between two safety protection board 1 simultaneously, after the adjustment is accomplished, screw second nut 8 on the screw thread section 15 of bracing piece 2, and screw to safety protection board 1's side, move stopper 9 on bracing piece 2 again, make stopper 9 hug closely on safety protection board 1's the another side, then screw up retaining member 10 on stopper 9, retaining member 10 top is tight on the screw thread section 15 of bracing piece 2, adopt stopper 9 and second nut 8 to press from both sides safety protection board 1 tightly, make safety protection board 1 fix a position on bracing piece 2.
(5) After putting forward ground with 4 drill bits on the stirring stake machine, simultaneously with 4 drill bits on the stirring stake machine descend two safety protection plate 1 between the region, wash drill bit 4 again, adopt the stick to choose on 4 drill bits go up the anchor rope 5 that length exceeded safety protection plate 1 on the drill bit and put on the hang plate 18 at safety protection plate 1 top, then adopt cutting device will place the anchor rope 5 on the hang plate 18 and cut, after the cutting is accomplished, adopt cutting device to remain winding anchor rope 5 on 4 drill bits and cut, will stir 4 drill bits on the stake machine and put forward the region between two safety protection plate 1 again, then retrieve the anchor rope 5 in the region between two safety protection plate 1.
The safety protection plate can move up and down in the sliding groove 16 through the first threaded rod 12, and the height of the bottom surface of the safety protection plate 1 from the ground is adjusted, so that the arrangement height of the safety protection plate 1 can adapt to the cutting operation of the anchor cable 5; simultaneously according to the scope of cutting off anchor rope 5, can adjust the distance between two safety protection board 1 for drill bit 4 on the stirring stake machine can stretch into the region between two safety protection board 1, and can choose longer anchor rope 5 and put on the hang plate 18 at safety protection board 1 top. Therefore, the cutting device can be firstly placed on the inclined plate 18 at the top of the safety protection plate 1 for cutting, in the cutting process, part of the anchor cables 5 can be rebounded to the safety protection plate 1, so that the length of the anchor cables 5 wound by the drill bit 4 is shortened, then the anchor cables 5 wound on the drill bit 4 are cut, part of the anchor cables 5 can be rebounded to the safety protection plate 1, safety protection is carried out on an operator, and meanwhile, most of the cut anchor cables 5 are concentrated in the area between the two safety protection plates 1, so that the anchor cables 5 can be conveniently and quickly recovered.
Further, when the anchor cable 5 is picked and placed on the inclined plate 18 at the top of the safety protection plate 1, the anchor cable 5 is straightened along the inclined plate 18, the anchor cable 5 placed on the inclined plate 18 is cut by the cutting device, acting force is applied to the longer anchor cable 5, and the longer anchor cable 5 can be cut to the maximum length.
Further, this stirring stake machine adopts the triaxial stirring stake machine, improves the winding capacity of anchor rope 5 on drill bit 4, can twine and twist and break the processing to anchor rope 5 fast, in order to accelerate the effect efficiency, the quantity of multiplicable triaxial stirring stake machine.
In the third embodiment of the present invention, the first,
as shown in fig. 6 to 11, in the case that the anchor cables 5 extending from the concrete enclosure structure 29 are distributed in a row, if the drill bit 4 on the mixing pile machine winds the anchor cables 5, the anchor cables 5 are not easily wound and twisted, so that the present invention improves the construction method, and the anchor cables 5 need to be positioned on the drill bit 4 and then twisted. The specific scheme is as follows:
the mixing pile machine adopts a single-shaft mixing pile machine, an anchor cable bending and positioning device is arranged on a drill bit 4 on the single-shaft mixing pile machine, the anchor cable bending and positioning device comprises a holding structure and a pressing structure, the pressing structure is arranged on the holding structure, the holding structure comprises two symmetrical hoop plates 19, the two hoop plates 19 are fixedly connected through a second bolt 21, the hoop plates 19 are provided with arc-shaped through holes 20, the circle centers of the arc-shaped through holes 20 and the hoop plates 19 are positioned on the same point, the pressing structure comprises a connecting end 24, a rotating plate 27 and an anchor cable pressing plate 28, the connecting end 24 is provided with a second threaded rod 22, the second threaded rod 22 passes through the arc-shaped through holes 20, a fourth nut 23 is in threaded connection with the second threaded rod 22, the connecting end 24 is welded with two lug plates 25, the rotating plate 27 is arranged between the two lug plates 25, the rotating plate 27 rotates on the lug plates 25 through a rotating shaft 26, the anchor cable pressing plate 28 is clamped on the rotating plate 27, and the concrete steps are as follows:
(1) the two hoop plates 19 are symmetrically clasped on the drill bit 4, the hoop plates 19 are lifted to the designed height of the drill bit 4, and then the two hoop plates 19 are fixedly connected on the drill bit 4 through the second bolts 21.
(2) The connecting end 24 is arranged on the hoop plate 19, the second threaded rod 22 is introduced into the connecting end 24 from top to bottom, the second threaded rod 22 penetrates through the arc-shaped through hole 20 of the hoop plate 19, the second threaded rod 22 is matched with the arc-shaped through hole 20, the fourth nut 23 is screwed into the second threaded rod 22, the second threaded rod 22 rotates in the arc-shaped through hole 20, the connecting end 24 rotates on the hoop plate 19, the position of the rotating plate 27 on one side of the drill bit 4 is adjusted, the fourth nut 23 on the second threaded rod 22 is screwed onto the connecting end 24 after the adjustment is completed, then the anchor cable pressing plate 28 exerts horizontal acting force on the rotating plate 27, and the clamping groove 14 on one side of the anchor cable pressing plate 28 is clamped into the rotating plate 27.
(3) The drill bit 4 of the mixing pile machine is lowered into the recess formed by the concrete retaining structure 29, while the drill bit 4 is arranged on the side of the anchor cable 5 to be handled.
(4) The acting force is applied to the anchor cable pressing plate 28, the rotating plate 27 is rotated on the lug plate 25 in the direction away from the drill bit 4, the anchor cable pressing plate 28 is opened, the mixing pile machine is moved towards the anchor cable 5 to be processed, the anchor cable 5 to be processed enters the area between the drill bit 4 and the anchor cable pressing plate 28, the anchor cable 5 to be processed is wound on the drill bit 4, and the drill bit 4 can touch the anchor cable 5 according to the depth of the anchor cable 5 on the concrete envelope 29. The turning plate 27 is then turned over the lug plate 25 towards the drill bit 4 so that the cable pressing plate 28 presses the cable 5 around the drill bit 4.
(5) And (3) spraying cement paste into a groove formed by the concrete enclosing structure 29 by adopting a single-shaft mixing pile machine, simultaneously rotating the drill bit 4, twisting off the anchor cable 5 extending out of the concrete enclosing structure 29 through the drill bit 4 and the anchor cable pressing plate 28, and lifting the drill bit 4 on the mixing pile machine out of the ground after the anchor cable 5 is twisted off.
(6) The drill bit 4 is cleaned, the anchor cable 5 wound on the drill bit 4 is cut off, and the rotating plate 27 is rotated on the lug plate 25 in the direction away from the drill bit 4, so that the anchor cable pressing plate 28 is opened, and the anchor cable 5 is recovered.
The rotation plate 27 is rotated on the lug plates 25, the rotation plate 27 and the two lug plates 25 can be in interference fit, the rotation plate 27 can rotate on the lug plates 25 only by a certain acting force, the anchor cable pressing plate 28 can be opened and pressed by the rotation of the rotation plate 27, when the anchor cable pressing plate 28 is in an opened state, the anchor cables 5 distributed in a row can be stretched into an area between the drill bit 4 and the anchor cable pressing plate 28, the anchor cables 5 are wound on the drill bit 4, then the anchor cable pressing plate 28 is pressed on the anchor cables 5 wound on the drill bit 4, the wound anchor cables 5 have a certain acting force on the drill bit 4, when the drill bit 4 rotates, the anchor cables 5 in the row can be uniformly twisted off, the twisted-off anchor cables 5 are wound on the drill bit 4, and the twisted-off anchor cables 5 in the row can be intensively wound and twisted off. And by rotating the second threaded rod 22 in the arc-shaped through hole 20, so that the connecting end 24 rotates on the hoop plate 19, the position of the rotating plate 27 on one side of the drill bit 4 can be adjusted, and the pressing point position of the anchor cable pressing plate 28 on the anchor cable 5 can be adjusted, so that the anchor cable 5 with certain elasticity can be more easily wound on the drill bit 4. After the drill bit 4 on the mixing pile machine is lifted out of the ground, the anchor cable 5 wound on the drill bit 4 is cut off, so that the anchor cable 5 is orderly distributed on the drill bit 4, and then the rotating plate 27 is rotated in the direction away from the drill bit 4 on the lug plate 25, so that the anchor cable pressing plate 28 is opened, the anchor cable 5 is recycled, and the phenomenon that the anchor cable 5 cannot be taken out of the drill bit 4 due to too many wound parts of the anchor cable 5 is avoided.
Further, before the drill bit 4 on the mixing pile machine is lowered into the groove formed by the concrete enclosing structure 29, measurement and positioning are performed on the ground, the point position of the mixing pile machine is determined, the point position of the mixing pile machine corresponds to the anchor cable 5 extending out of the concrete enclosing structure 29, when the anchor cable 5 extends into the area between the drill bit 4 and the anchor cable pressing plate 28, the anchor cable 5 is made to be close to the drill bit 4 as far as possible, and the anchor cable 5 is convenient to wind on the drill bit 4 in advance.
And further, after the cement paste is cured, sampling in the cured structure, testing the compressive strength of the concrete, and adjusting the parameters of the cement paste through the testing of the compressive strength of the concrete so that the compressive strength of the concrete meets the design requirements.
When the anchor cables 5 are uniformly distributed in a plurality of rows, a template can be erected in the groove formed in the concrete enclosing structure 29, so that the anchor cables 5 in the same row are arranged in the template, and cement slurry can be sprayed in the erected template for one unit for processing the anchor cables 5.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (5)
1. The anchor cable treatment and stratum reinforcement integrated construction method is characterized by comprising the following steps of:
aiming at the condition that the anchor cables extending out of the concrete enclosing structure are distributed in a row, the mixing pile machine adopts a single-shaft mixing pile machine, an anchor cable bending and positioning device is installed on a drill bit on the single-shaft mixing pile machine, the anchor cable bending and positioning device comprises an embracing structure and a pressing structure, the pressing structure is installed on the embracing structure, the embracing structure comprises two symmetrical hooping plates, the two hooping plates are fixedly connected through a second bolt, the hooping plates are provided with arc-shaped through holes, the circle centers of the arc-shaped through holes and the hooping plates are positioned on the same point, the pressing structure comprises a connecting end, a rotating plate and an anchor cable pressing plate, the connecting end is provided with a second threaded rod, the second threaded rod penetrates through the arc-shaped through holes, a fourth nut is in threaded connection with the second threaded rod, the connecting end is welded with two lug plates, the rotating plate is arranged between the two lug plates, the rotating plate rotates on the ear plate through the rotating shaft, the anchor cable pressing plate is clamped on the rotating plate, and the concrete steps are as follows:
(1) the two hoop plates are symmetrically and tightly held on the drill bit, lifted to the designed height of the drill bit, and then fixedly connected to the drill bit by adopting second bolts;
(2) arranging a connecting end on a hoop plate, introducing a second threaded rod into the connecting end from top to bottom, enabling the second threaded rod to penetrate through an arc-shaped through hole of the hoop plate, enabling the second threaded rod to be matched with the arc-shaped through hole, screwing a fourth nut on the second threaded rod, rotating the second threaded rod in the arc-shaped through hole, further enabling the connecting end to rotate on the hoop plate, adjusting the position of a rotating plate on one side of a drill bit, screwing the fourth nut on the second threaded rod on the connecting end after the adjustment is completed, then applying a horizontal acting force on the rotating plate by an anchor cable pressing plate, and clamping a clamping groove on one side of the anchor cable pressing plate into the rotating plate;
(3) a drill bit on the mixing pile machine is lowered into a groove formed in the concrete enclosing structure, and meanwhile, the drill bit is arranged on one side of the anchor cable to be processed;
(4) applying an acting force on the anchor cable pressing plate, rotating the rotating plate on the lug plate in a direction away from the drill bit to open the anchor cable pressing plate, moving the mixing pile machine in the direction of the anchor cable to be processed to enable the anchor cable to be processed to enter a region between the drill bit and the anchor cable pressing plate, winding the anchor cable to be processed on the drill bit, and rotating the rotating plate on the lug plate in a direction close to the drill bit to enable the anchor cable pressing plate to press the anchor cable wound on the drill bit;
(5) spraying cement slurry into a groove formed in the concrete enclosure structure by adopting a single-shaft mixing pile machine, simultaneously rotating a drill bit, twisting off an anchor rope extending out of the concrete enclosure structure through the drill bit and an anchor rope pressing plate, and lifting the drill bit on the mixing pile machine out of the ground after the anchor rope is twisted off;
(6) the drill bit is cleaned, the anchor cable wound on the drill bit is cut off, and the rotating plate is rotated in the direction away from the drill bit on the lug plate, so that the anchor cable pressing plate is opened, and the anchor cable is recycled.
2. The anchor cable treatment and stratum consolidation integrated construction method according to claim 1, characterized in that: adopt anchor rope cutting protection device to carry out safety protection to operating personnel, anchor rope cutting protection device includes safety protection board, bracing piece and mounting bracket, the safety protection board is located on the bracing piece, the bracing piece is located on the mounting bracket, wash the drill bit again, then cut off winding anchor rope on the drill bit, concrete step is:
(1) a first bolt is driven into the ground, the fixed seat at the bottom of the mounting frame is arranged on the first bolt, a first nut is screwed into the first bolt, and the mounting frame is fixed on the ground;
(2) two second nuts are screwed into a single supporting rod, the second nuts are arranged at the center of the supporting rod, two safety protection plates are arranged on the two supporting rods and symmetrically arranged, a limiting block is slid into the single supporting rod, and the safety protection plates are arranged between the second nuts and the limiting block;
(3) welding a connecting block at the outer end of the supporting rod, clamping the connecting block into a clamping groove of the mounting frame, then introducing a first threaded rod into the connecting block, penetrating the first threaded rod through a sliding groove of the mounting frame, and then screwing third nuts into two ends of the first threaded rod;
(4) according to the height of cutting off the anchor cable, the first threaded rod moves up and down in the sliding groove, the height of the bottom surface of the safety protection plate from the ground is adjusted, after the adjustment is completed, screwing a third nut on the side surface of the mounting rack, and according to the range of cutting off the anchor cable, two safety protection plates slide on the supporting rod to adjust the positions of the safety protection plates on the supporting rod, simultaneously, the distance between the two safety protection plates is adjusted, after the adjustment is finished, the second nut is screwed on the thread section of the supporting rod, and screwed on the side surface of the safety protection plate, and then the limiting block is moved on the supporting rod to be tightly attached to the other side surface of the safety protection plate, then, screwing the locking part on the limiting block, wherein the locking part is tightly propped against the threaded section of the supporting rod, and clamping the safety protection plate by using the limiting block and a second nut so that the safety protection plate is positioned on the supporting rod;
(5) after the drill bit on will stirring the stake machine is proposed ground, in the region between two safety protection board with the drill bit on the stirring stake machine falls, wash the drill bit again, adopt the stick to choose the anchor rope that length exceeded safety protection board on the drill bit on the inclined plate of putting the safety protection board top after that, then adopt cutting device will place the anchor rope on the inclined plate and cut, after the cutting is accomplished, adopt cutting device to cut surplus winding anchor rope on the drill bit, will stir the drill bit on the stake machine and propose the region between two safety protection board again, then retrieve the anchor rope in the region between two safety protection board.
3. The anchor cable treatment and stratum consolidation integrated construction method according to claim 2, characterized in that: when the anchor cable is chosen to be placed on the inclined plate at the top of the safety protection plate, the anchor cable is straightened along the inclined plate, and then the anchor cable placed on the inclined plate is cut by the cutting device.
4. The anchor cable treatment and stratum consolidation integrated construction method according to claim 1, characterized in that: before a drill bit on the mixing pile machine is lowered into a groove formed in the concrete enclosing structure, measuring and positioning are carried out on the ground, and the point position of the mixing pile machine is determined and corresponds to the anchor cable extending out of the concrete enclosing structure.
5. The anchor cable treatment and stratum consolidation integrated construction method according to claim 1, characterized in that: and after the cement paste is cured, sampling in the cured structure, and testing the compressive strength of the concrete.
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| CN202110435869.9A CN113123334B (en) | 2021-04-22 | 2021-04-22 | Anchor cable treatment and stratum reinforcement integrated construction method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08134906A (en) * | 1994-11-15 | 1996-05-28 | Sumitomo Electric Ind Ltd | Water cut-off method for fixed length part of anchor |
| CN202606747U (en) * | 2012-05-02 | 2012-12-19 | 中国神华能源股份有限公司 | Anchor cable cutting device |
| CN204646114U (en) * | 2015-05-19 | 2015-09-16 | 中建八局第三建设有限公司 | A kind of drill bit cutting discarded anchor cable in stake holes |
| CN204645044U (en) * | 2015-04-17 | 2015-09-16 | 霍炳旭 | A kind of steel strand reclaim support |
| CN106088099A (en) * | 2016-07-15 | 2016-11-09 | 南昌轨道交通集团有限公司 | A kind of subway foundation pit anchor cable processing method |
| CN107130965A (en) * | 2017-05-18 | 2017-09-05 | 中国建筑第八工程局有限公司 | Anchor cable sweep-out method and removing system in a kind of tunnel |
| CN112502189A (en) * | 2020-12-21 | 2021-03-16 | 湖南科技大学 | Device and method for displacement control of bare-laid submarine pipeline |
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2021
- 2021-04-22 CN CN202110435869.9A patent/CN113123334B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08134906A (en) * | 1994-11-15 | 1996-05-28 | Sumitomo Electric Ind Ltd | Water cut-off method for fixed length part of anchor |
| CN202606747U (en) * | 2012-05-02 | 2012-12-19 | 中国神华能源股份有限公司 | Anchor cable cutting device |
| CN204645044U (en) * | 2015-04-17 | 2015-09-16 | 霍炳旭 | A kind of steel strand reclaim support |
| CN204646114U (en) * | 2015-05-19 | 2015-09-16 | 中建八局第三建设有限公司 | A kind of drill bit cutting discarded anchor cable in stake holes |
| CN106088099A (en) * | 2016-07-15 | 2016-11-09 | 南昌轨道交通集团有限公司 | A kind of subway foundation pit anchor cable processing method |
| CN107130965A (en) * | 2017-05-18 | 2017-09-05 | 中国建筑第八工程局有限公司 | Anchor cable sweep-out method and removing system in a kind of tunnel |
| CN112502189A (en) * | 2020-12-21 | 2021-03-16 | 湖南科技大学 | Device and method for displacement control of bare-laid submarine pipeline |
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| CN113123334A (en) | 2021-07-16 |
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