CN113175298B - Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process - Google Patents
Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process Download PDFInfo
- Publication number
- CN113175298B CN113175298B CN202110360326.5A CN202110360326A CN113175298B CN 113175298 B CN113175298 B CN 113175298B CN 202110360326 A CN202110360326 A CN 202110360326A CN 113175298 B CN113175298 B CN 113175298B
- Authority
- CN
- China
- Prior art keywords
- pipe
- grouting
- construction
- wall
- drilling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002689 soil Substances 0.000 title claims abstract description 67
- 238000010276 construction Methods 0.000 title claims abstract description 59
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 28
- 238000007569 slipcasting Methods 0.000 claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims description 42
- 239000004567 concrete Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 abstract description 7
- 230000008093 supporting effect Effects 0.000 description 8
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a jet grouting drilling machine for soil nailing wall construction, which relates to the technical field of foundation pit construction equipment and comprises a drilling machine main body, wherein a slide rail is arranged on the drilling machine main body, a power part is arranged on the slide rail in a sliding manner, a drill rod main body is arranged on the power part, the drill rod main body comprises a driving pipe rotationally connected with the power part, an internal thread is formed on the inner side of the driving pipe, a limiting pipe fixedly connected with the power part is arranged in the driving pipe, a plurality of sliding grooves are formed on the limiting pipe, a moving block is arranged in the limiting pipe, a plurality of sliding blocks in sliding fit with the sliding grooves are fixedly arranged on the moving block, and an external thread matched with the internal thread is formed on one side of the sliding block, which is far away from the moving block; the slip casting pipe has been cup jointed in the outside of driving tube, and the one end that power portion was kept away from to the slip casting pipe is provided with the drill bit, and the pipe wall of slip casting pipe is hollow structure, and the one end shaping that the slip casting pipe is close to the drill bit has a plurality of injected holes. The rotary jet drilling machine for the construction of the soil nailing wall is convenient to use and high in construction efficiency.
Description
Technical Field
The invention relates to the technical field of slope support, in particular to a soil nailing wall, a rotary jet drilling machine for construction of the soil nailing wall and a construction process of the soil nailing wall.
Background
The soil nailing wall is a foundation pit slope supporting structure, and is constructed into a composite body formed by firmly bonding grouting soil nails (namely anchor rods) arranged in a slope body and a surrounding soil body, and a wall body which is similar to a gravity retaining wall and is formed by a surface layer is used as a supporting structure.
The invention patent with the prior publication number of CN102352630A discloses a construction method of a full-thread fiber resin rod body soil nailing wall, comprising the following steps of firstly, excavating a working surface on a side slope soil body, and finishing a slope surface; step two, determining the hole site of the soil nail by measuring and setting out; step three, manually or mechanically forming holes; inserting the full-thread fiber resin rod body into the hole, and injecting cement slurry into the hole to form rod peripheral slurry; binding and fixing a reinforcing mesh, transverse pressing ribs and auxiliary reinforcing ribs on the outer surface of the slope soil body; step six, spraying concrete to form a concrete surface layer, and scraping the surface layer at the orifice to be smooth; pressing the ribbed resin base plate to be tightly contacted with the concrete surface layer before the sprayed concrete surface layer is initially set, and screwing the outer end of the full-thread fiber resin rod body by screwing a resin nut to ensure that the ribbed resin base plate is pressed and placed firmly; and step eight, curing the concrete surface layer and preparing for excavation of the lower working surface.
When the equipment in the construction method is used for construction, holes are formed firstly, then the threaded resin rods are inserted, and finally grouting is performed, so that the construction process is complicated, and the construction efficiency is low. By adopting the construction process in the technical scheme, the disturbance on the soft soil layer is large during pore forming, and the stability of the foundation pit side slope is influenced.
Disclosure of Invention
The invention aims to provide a jet grouting drilling machine for soil nailing wall construction, which can be used for synchronously pouring concrete and synchronously installing grouting soil nail components matched with the jet grouting drilling machine during drilling to perform one-time construction forming on grouting soil nails, reduce the construction difficulty and improve the construction efficiency.
A jet grouting drilling machine for soil nailing wall construction comprises a drilling machine main body, wherein a slide rail is arranged on the drilling machine main body, a power part is arranged on the slide rail in a sliding manner, a drilling rod main body is arranged on the power part, the drilling rod main body comprises a driving pipe rotationally connected with the power part, an internal thread is formed on the inner side of the driving pipe, a limiting pipe fixedly connected with the power part is arranged in the driving pipe, a plurality of sliding grooves are formed in the limiting pipe, a moving block is arranged in the limiting pipe, a plurality of sliding blocks in sliding fit with the sliding grooves are fixedly arranged on the moving block, and an external thread in fit with the internal thread is formed on one side, away from the moving block, of the sliding block; the outer side of the driving pipe is sleeved with a grouting pipe, one end, far away from the power portion, of the grouting pipe is provided with a drill bit, the pipe wall of the grouting pipe is of a hollow structure, and a plurality of grouting holes are formed in one end, close to the drill bit, of the grouting pipe.
Through adopting above-mentioned technical scheme, thereby power portion can drive itself and remove the precession and the back-out of control drilling rod main part on the slide rail, and the slip casting pipe can rotate under the drive of power portion to spray clear water or concrete through the slip casting hole, the driving tube can carry out forward and reverse rotation under the drive of power portion, thereby the removal of control movable block in spacing intraductal. During the use, the slip casting soil nail component matched with the jet grouting drilling machine is inserted into the limiting pipe, and the slip casting soil nail component can be pushed out of the limiting pipe under the pushing of the moving block in the construction process.
The invention is further configured to: the limiting pipe is internally provided with a sliding barrel which is matched with the limiting pipe in a sliding manner, and one end of the limiting pipe, which is far away from the power part, is formed into a limiting ring.
Through adopting above-mentioned technical scheme, the section of thick bamboo that slides can freely remove in spacing intraductal, will with this spout the slip casting soil nail component piece that the rig used cooperation soon insert spacing intraductal and install in the section of thick bamboo that slides to reduce the resistance when the movable block pushes out spacing pipe with the reinforcing bar stock, improve this spout the use convenience of rig soon.
The invention is further configured to: the drill bit comprises a connecting piece fixedly connected with the end part of the grouting pipe, the connecting piece is of a circular truncated cone-shaped structure, divergent helical blades are formed on the side wall of the connecting piece, and a passing hole is formed in the middle of the connecting piece.
Through adopting above-mentioned technical scheme, helical blade on the drill bit can be convenient for this jet grouting rig to creep into on the foundation ditch slope, and the current hole can be convenient for with the installation of the slip casting soil nail component that this jet grouting rig cooperation was used.
The invention also aims to provide a construction process of the soil nailing wall, which uses the rotary jet drilling machine to construct grouting soil nails in a high-pressure rotary jet mode, reinforces the original soil body, can ensure that the grouting soil nails have higher binding force with the side slope of the foundation pit particularly in a soft soil layer, and has simple construction process and high construction efficiency.
A construction process of a soil nailing wall comprises the following steps:
step one, repairing a foundation pit;
secondly, positioning and paying off;
step three, drilling on the foundation pit side slope, and spraying clear water in the process that the drill rod main body is screwed into the foundation pit side slope;
fourthly, pulling out the drill rod main body after the preset depth is reached, and performing rotary spraying on concrete in the process of pulling out the drill rod main body;
binding a reinforcing mesh;
and step eight, carrying out guniting on the foundation pit slope.
The invention is further configured to: and D, inserting a pile casing on the foundation pit side slope between the second step and the third step, wherein the pile casing is higher than the surface of the foundation pit side slope.
Through adopting above-mentioned technical scheme, when the slip casting, protect a section of thick bamboo and can store the concrete of capacity to as supplementing in the concrete infiltration soil layer after, avoid the follow-up benefit thick liquid work of carrying on many times of workman, effectively improve construction quality and efficiency of construction.
The invention is further configured to: and (4) removing the pile casing after the concrete in the pile casing is initially set, and cutting off the excessive concrete.
By adopting the technical scheme, the method has the advantages that,
the invention also aims to provide the soil nailing wall which is constructed by adopting the construction process, the support frame is utilized to ensure that the steel bar anchor rod and the grouting anchor rod are stably connected, the pulling resistance of the grouting soil nail is improved, and the protection effect of the soil nailing wall is ensured.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a soil nailing wall, includes wall body and slip casting soil nail, slip casting soil nail includes slip casting stock and the reinforcing bar stock of pouring in the slip casting stock, be provided with two support frames on the reinforcing bar stock, the support frame is including being fixed in the fixed sleeve on the reinforcing bar stock, the last articulated a plurality of branches that are provided with of fixed sleeve, fixedly connected with torsion spring between branch and the fixed sleeve, the support frame still includes and slides complex movable sleeve with the reinforcing bar stock, the last articulated a plurality of ejector pins that are provided with of movable sleeve, the ejector pin is kept away from movable sleeve's one end and is corresponded branch and articulate.
Through adopting above-mentioned technical scheme, the cooperation of reinforcing bar stock spouts the rig soon and uses, and is folding with the support frame before the construction, then keeps away from the one end of fixed sleeve with branch and towards the inboard of spacing pipe and insert the reinforcing bar stock whole spacing pipe, enters into earlier the support frame installation in the spacing pipe in the sleeve. In the construction process, the rotary jet drilling machine pushes the steel bar anchor rod out of the limiting pipe while grouting, the supporting frame is opened after the steel bar anchor rod is pushed out of the limiting pipe, and support is provided for the steel bar anchor rod, so that the steel bar anchor rod is ensured to be located in the center of the grouting anchor rod. The support frame is in a completely opened state during casting molding in the grouting anchor rod, effectively improves the connection strength between the steel bar anchor rod and the grouting anchor rod, improves the anti-pulling capacity of the grouting soil nail, and ensures that the soil nail wall effectively supports the foundation pit side slope.
The invention is further configured to: the one end of steel bar stock and wall connection is provided with the fastener that is used for pressing the reinforcing bar net, the fastener includes the connecting cylinder with steel bar stock threaded connection, the fixed joint ring that is provided with of one end that the support frame was kept away from to the connecting cylinder, the joint body has been cup jointed on the connecting cylinder, the fixed jack catch that is provided with a plurality of support frame direction of buckling on the joint body.
Through adopting above-mentioned technical scheme, utilize the fastener to stabilize the reinforcing bar net and compress tightly during the construction, the reinforcing bar in the reinforcing bar net passes under each jack catch of fastener, and the joint body passes through the connecting cylinder and stabilizes and connect on the reinforcing bar stock, compares in welded structure, and this structure effectively avoids appearing the cross welding seam between horizontal longitudinal reinforcement and the reinforcing bar stock in the reinforcing bar net, effectively improves the reliability of connecting.
In summary, the beneficial technical effects of the invention are as follows:
(1) The construction process of drilling, installing the steel bar anchor rod and grouting is completed in one step by using the jet grouting drill, so that the construction steps are reduced, and the construction convenience and the construction efficiency are effectively improved;
(2) According to the invention, the grouting soil nails are constructed in a high-pressure jet grouting manner, so that the combination effect between the grouting soil nails and a soft soil body is improved, meanwhile, the construction steps can be simplified, and the construction efficiency is improved;
(3) The support frame is matched with the jet grouting drilling machine for use, so that the reinforcing steel bar anchor rod is positioned in the center of the grouting anchor rod, the connection strength between the reinforcing steel bar anchor rod and the grouting anchor rod is improved, the pulling resistance of the grouting soil nail is improved, and the protection effect of the soil nail wall is ensured.
Drawings
FIG. 1 is a schematic axial view of the overall structure of a first embodiment of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1, which mainly shows the structure of the drill rod body;
FIG. 3 is a partial enlarged view of the position B in FIG. 2, which mainly shows the connection relationship between the limiting rod, the driving rod and the power part;
FIG. 4 is an enlarged view of a portion of the bit at C of FIG. 2, primarily illustrating the structure of the bit;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1, which mainly shows the structure of the grouting pipe;
FIG. 6 is a schematic structural diagram of a second embodiment of the present invention;
fig. 7 is a schematic view of an axial measurement structure of a reinforcing bar anchor rod according to a second embodiment of the present invention.
Reference numerals: 1. a drill body; 2. a slide rail; 3. a rack; 4. a base; 5. a first motor; 6. a first gear; 7. a drive tube; 8. a first external gear; 9. a second motor; 10. a second gear; 11. a limiting pipe; 12. a chute; 13. a moving block; 14. a slider; 15. a sliding barrel; 16. a limiting ring; 17. a grouting pipe; 18. a second external gear; 19. a third motor; 20. a third gear; 21. grouting a channel; 22. a partition plate; 23. an end cap; 24. a delivery pipe; 25. grouting holes; 26. a drill bit; 261. a connecting member; 262. a through hole; 263. a helical blade; 27. a wall body; 28. grouting an anchor rod; 29. a steel bar anchor rod; 30. fixing the sleeve; 31. a strut; 32. a torsion spring; 33. a movable sleeve; 34. a top rod; 35. clamping the piece; 351. a snap ring; 352. a clip body; 353. a claw; 354. and screwing the hole.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying examples.
The first embodiment is as follows:
the utility model provides a spout rig soon for construction of soil nail wall, includes rig main part 1, is provided with slide rail 2 on the rig main part 1, and the fixed rack 3 that extends along 2 length direction of slide rail that is provided with on the slide rail 2, is provided with power portion on the slide rail 2, and power portion includes and slides complex base 4 with slide rail 2, and the fixed first motor 5 that is provided with on the base 4, the fixed first gear 6 that is provided with 3 meshes of rack of first motor 5 axle head.
Be provided with the drilling rod main part in the power portion, the drilling rod main part include with base 4 normal running fit's drive tube 7, the one end outside that drive tube 7 stretched into in base 4 is fixed and is provided with first external gear 8, the base 4 internal fixation is provided with second motor 9, the second motor 9 axle head is fixed and is provided with the second gear 10 with external gear engagement. Be provided with base 4 fixed connection's spacing pipe 11 in the driving tube 7, the shaping has three spout 12 that extends along spacing pipe 11 length direction on the spacing pipe 11, is provided with columniform movable block 13 in the spacing pipe 11, and fixed being provided with on the movable block 13 three respectively with corresponding spout 12 sliding fit's slider 14, one side shaping that the movable block 13 was kept away from to slider 14 has the external screw thread, the inboard shaping of driving tube 7 have with external screw thread screw-thread fit's internal thread. A sliding barrel 15 matched with the limiting ring 16 in a sliding mode is arranged in the limiting pipe 11, and the limiting ring 16 for preventing the sliding barrel 15 from falling off is formed at one end, far away from the power portion, of the limiting pipe 11.
The outer side of the driving pipe 7 is sleeved with a grouting pipe 17 which is in running fit with the base 4, one end of the grouting pipe 17 extending into the base 4 is fixedly provided with a second external gear 18, the base 4 is fixedly provided with a third motor 19, and the shaft end of the third motor 19 is fixedly provided with a third gear 20 which is meshed with the second external gear 18. Slip casting passageway 21 has been formed in the pipe wall of slip casting pipe 17, and slip casting passageway 21 internal fixation is provided with three baffle 22, and the one end that slip casting pipe 17 stretched into base 4 rotates and is provided with end cover 23, and end cover 23 and base 4 fixed connection are fixed on the end cover 23 and are provided with two conveying pipeline 24, and conveying pipeline 24 runs through end cover 23 and communicates with slip casting passageway 21. The end of the grouting pipe 17 far away from the base 4 is formed with two grouting holes 25, and the grouting holes 25 are communicated with the grouting channel 21. The fixed drill bit 26 that is provided with of one end that the base 4 was kept away from to slip casting pipe 17, drill bit 26 include with slip casting pipe 17 tip fixed connection's round platform form connecting piece 261, the shaping of connecting piece 261 middle part have with current hole 262, the shaping has the helical blade 263 of dispersing on the connecting piece 261 lateral wall.
The working principle of the embodiment is as follows: before drilling construction, a grouting soil nail component matched with the jet grouting drilling machine is inserted into the limiting rod from one end far away from the base 4. And then the grouting pipe 17 is driven by a third motor 19 to drill in a rotating way and spray clean water, after the grouting pipe 17 drills to a preset depth, the grouting pipe 17 rotates in a reverse direction and starts to spray concrete, and meanwhile, the driving pipe 7 is driven by a second motor 9 to rotate so that the moving block 13 moves in a direction away from the base 4, so that the grouting soil nail component is pushed out of the limiting pipe 11, and the grouting soil nail is formed at one time. The rotary jet drilling machine in the embodiment can effectively improve the construction efficiency in the construction of the grouting soil nails.
Example two:
a construction process of a soil nailing wall comprises the following steps:
the method comprises the following steps that firstly, a foundation pit side slope is trimmed, and a slurry discharge ditch and a slurry pond are dug at the bottom of a foundation pit, so that slurry generated in construction can be discharged and collected conveniently;
secondly, positioning and paying off are carried out according to a design drawing;
drilling on the foundation pit side slope by using a rotary jet drilling machine, and jetting clear water in the process that the drill rod main body is screwed into the foundation pit side slope;
step four, the drilling and shotcreting machine pulls out the drill rod main body after the drilling depth reaches the preset depth, and in the process of pulling out the drill rod main body, the concrete is sprayed in a rotating mode, meanwhile, the grouting soil nail forming part matched with the rotary shotcreting machine is pushed out of the limiting pipe 11, and the steps three to four are repeated until all grouting soil nail construction is completed;
step five, binding a reinforcing mesh of the wall 27, arranging a cushion block between the reinforcing mesh and the foundation pit slope, and compressing the reinforcing mesh by using the clamping piece 35;
and step eight, spraying the foundation pit side slope to finally form the wall body 27.
And in the process of construction according to the construction steps, a step is added between the step two and the step three, wherein a pile casing is inserted on the foundation pit side slope, the inner diameter of the pile casing is more than or equal to the outer diameter of the drill rod main body, and the pile casing is higher than the surface of the foundation pit side slope. And (4) removing the pile casing after the concrete in the pile casing is initially set, and cutting off the excessive concrete.
Example three:
referring to the attached drawings, the soil nailing wall comprises a wall body 27 and grouting soil nails, wherein the wall body 27 is of a concrete structure and is internally provided with a reinforcing mesh, each grouting soil nail comprises a grouting anchor rod 28 formed by pouring concrete and a reinforcing anchor rod 29 poured in the grouting anchor rod 28, two ends of each reinforcing anchor rod 29 are respectively provided with a support frame, each support frame comprises a fixed sleeve 30 fixed on the corresponding reinforcing anchor rod 29, one end of each fixed sleeve 30 is hinged with three supporting rods 31 uniformly distributed along the circumferential direction of the corresponding fixed sleeve 30, a torsion spring 32 is fixedly connected between each supporting rod 31 and the corresponding fixed sleeve 30, each support frame further comprises a movable sleeve 33 sleeved on the corresponding reinforcing anchor rod 29 and in sliding fit with the corresponding reinforcing anchor rod 29, each movable sleeve 33 is abutted to one end, far away from the corresponding supporting rod 31, of the corresponding fixed sleeve 30 is abutted to one end of the corresponding movable sleeve 33, and three ejector rods 34 are hinged to the corresponding movable sleeve 33.
One end that slip casting soil nail and wall body 27 link to each other is provided with fastener 35 that is used for pressing the reinforcing bar net, and fastener 35 includes the connecting cylinder with 29 threaded connection of steel bar stock, and the one end that the support frame was kept away from to the connecting cylinder is the flange structure, and the shaping has three hole 354 of screwing that is used for making things convenient for the swivelling joint section of thick bamboo on the connecting cylinder. The connecting cylinder is sleeved with a clamping body 352, and three clamping claws 353 bent towards the direction of the supporting frame are fixedly arranged on the clamping body 352. After the connector is screwed, the flange of the connector can apply pressure to the clamping body 352 to enable the clamping body 352 to tightly press the reinforcing mesh on the foundation pit slope, so that the reinforcing mesh is firmly connected with the foundation pit slope and the reinforcing anchor rods 29.
The working principle of the embodiment is as follows: before construction, the reinforcing steel bar anchor rod 29 is inserted into the limiting pipe 11, one end of the support rod 31, far away from the fixing sleeve 30, is folded towards the direction close to the base 4, and the support rod 31, close to one end of the base 4, on the reinforcing steel bar anchor rod 29 is folded and abutted to the inner wall of the sliding barrel 15. After the reinforcing bar stock 29 was released spacing pipe 11 in the work progress, the support frame will be opened and for reinforcing bar stock 29 provides stable support, guarantees that reinforcing bar stock 29 is located the middle part of slip casting stock 28, guarantees the construction quality of slip casting soil nail. The grouting soil is nailed in the foundation pit side slope to tie the wall 27, so that the wall 27 has a supporting effect on the foundation pit side slope, landslide and collapse of the foundation pit side slope are avoided, and the subsequent construction safety in the foundation pit is ensured.
The above description is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a spout rig soon for construction of soil nail wall, includes rig main part (1), be provided with slide rail (2) on rig main part (1), slide on slide rail (2) and be provided with power portion, its characterized in that: the drill rod comprises a power part and is characterized in that a drill rod body is arranged on the power part, the drill rod body comprises a driving pipe (7) which is rotationally connected with the power part, internal threads are formed on the inner side of the driving pipe (7), a limiting pipe (11) which is fixedly connected with the power part is arranged in the driving pipe (7), a plurality of sliding grooves (12) are formed in the limiting pipe (11), a moving block (13) is arranged in the limiting pipe (11), a plurality of sliding blocks (14) which are in sliding fit with the sliding grooves (12) are fixedly arranged on the moving block (13), and external threads which are matched with the internal threads are formed on one side, away from the moving block (13), of each sliding block (14); a grouting pipe (17) is sleeved on the outer side of the driving pipe (7), a drill bit (26) is arranged at one end, far away from the power part, of the grouting pipe (17), the pipe wall of the grouting pipe (17) is of a hollow structure, and a plurality of grouting holes (25) are formed in one end, close to the drill bit (26), of the grouting pipe (17); the steel bar anchor rod provided with the foldable support can be inserted into the limiting pipe, the steel bar anchor rod is pushed out of the limiting pipe (11) while grouting is carried out on the steel bar anchor rod in the construction process, and the support frame is opened after the steel bar anchor rod is pushed out of the limiting pipe (11) so as to support the steel bar anchor rod.
2. The jet grouting drilling machine for the construction of the soil nailing wall as claimed in claim 1, characterized in that: a sliding barrel (15) which is matched with the limiting pipe (11) in a sliding mode is arranged in the limiting pipe (11), and a limiting ring (16) is formed at one end, far away from the power portion, of the limiting pipe (11).
3. The jet grouting drilling machine for the construction of the soil nailing wall as claimed in claim 1, wherein: the drill bit (26) comprises a connecting piece (261) fixedly connected with the end part of the grouting pipe (17), the connecting piece (261) is of a circular truncated cone-shaped structure, a divergent spiral blade (263) is formed on the side wall of the connecting piece (261), and a through hole (262) is formed in the middle of the connecting piece (261).
4. A construction process of a soil nailing wall, which uses the rotary jet drilling machine in any one of claims 1 to 3, and is characterized in that: the method comprises the following construction steps:
step one, repairing a foundation pit;
secondly, positioning and paying off;
step three, drilling on the foundation pit side slope, and spraying clear water in the process that the drill rod main body is screwed into the foundation pit side slope;
fourthly, pulling out the drill rod main body after the preset depth is reached, and performing rotary spraying on concrete in the process of pulling out the drill rod main body;
binding a reinforcing mesh;
and step eight, carrying out guniting on the foundation pit slope.
5. The construction process according to claim 4, wherein: and D, inserting a pile casing on the foundation pit side slope between the second step and the third step, wherein the pile casing is higher than the surface of the foundation pit side slope.
6. The construction process according to claim 5, wherein: and after the concrete in the pile casing is initially set, the pile casing is dismantled and the excess concrete is cut off.
7. A soil nailing wall constructed by the construction process of any one of claims 4 to 6, comprising a wall body (27) and grouting soil nails, and is characterized in that: slip casting soil nail includes slip casting stock (28) and pours into reinforcing bar stock (29) in slip casting stock (28), be provided with two support frames on reinforcing bar stock (29), the support frame is including being fixed in fixed sleeve (30) on reinforcing bar stock (29), the articulated a plurality of branch (31) that are provided with on fixed sleeve (30), fixedly connected with torque spring (32) between branch (31) and fixed sleeve (30), the support frame still includes the complex movable sleeve (33) that slides with reinforcing bar stock (29), the articulated a plurality of ejector pins (34) that are provided with on movable sleeve (33), the one end that movable sleeve (33) were kept away from in ejector pin (34) is articulated with corresponding branch (31).
8. The soil nailing wall of claim 7, wherein: one end that reinforcing bar stock (29) and wall body (27) are connected is provided with fastener (35) that are used for pressing the reinforcing bar net, fastener (35) include with reinforcing bar stock (29) threaded connection's connecting cylinder, the fixed joint ring (351) that is provided with of one end that the support frame was kept away from to the connecting cylinder, the joint body (352) has been cup jointed on the connecting cylinder, fixed a plurality of jack catchs (353) of buckling to the support frame direction that are provided with on the joint body (352).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360326.5A CN113175298B (en) | 2021-04-02 | 2021-04-02 | Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360326.5A CN113175298B (en) | 2021-04-02 | 2021-04-02 | Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113175298A CN113175298A (en) | 2021-07-27 |
| CN113175298B true CN113175298B (en) | 2023-02-28 |
Family
ID=76922779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110360326.5A Active CN113175298B (en) | 2021-04-02 | 2021-04-02 | Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113175298B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957912B (en) * | 2021-12-06 | 2022-11-29 | 青岛地质工程勘察院(青岛地质勘查开发局) | A slope empty bag department of subsides repair equipment for ground is administered |
| CN115030174B (en) * | 2022-06-16 | 2024-02-27 | 浙江国进建设有限公司 | Construction device and construction method for foundation of chemical plant |
| CN115434342B (en) * | 2022-10-08 | 2023-10-20 | 上海金鹿建设(集团)有限公司 | High side slope supporting structure and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415805A (en) * | 2002-12-12 | 2003-05-07 | 上海交通大学 | Ship anchor type anchor head of ground anchor in grouting stretch model |
| JP5290461B1 (en) * | 2012-12-04 | 2013-09-18 | 矢作建設工業株式会社 | Slope reinforcement method |
| CN107386283A (en) * | 2017-07-19 | 2017-11-24 | 中铁四局集团市政工程有限公司 | A kind of anchor rod construction method suitable for mud burning into sand layer |
| CN109826589A (en) * | 2018-12-29 | 2019-05-31 | 北京中岩大地科技股份有限公司 | A kind of confined space high-pressure mortar spraying method and system |
| CN110847168A (en) * | 2019-12-12 | 2020-02-28 | 长安大学 | Drilling, anchoring and grouting combined construction device and anchor cable construction method |
| CN210658343U (en) * | 2019-09-09 | 2020-06-02 | 重庆中辅建设工程有限公司 | Expand body resistance to plucking stock |
| CN111576401A (en) * | 2020-06-01 | 2020-08-25 | 盾构及掘进技术国家重点实验室 | Fast-moving rotary jet grouting equipment and grouting method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160013690A (en) * | 2014-07-28 | 2016-02-05 | 주식회사그라운드이엔씨 | Using geosynthetic reinforcement nailing devices and reinforcement |
| CN206942663U (en) * | 2017-07-27 | 2018-01-30 | 中国铁建重工集团有限公司 | A kind of horizontal jet |
-
2021
- 2021-04-02 CN CN202110360326.5A patent/CN113175298B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415805A (en) * | 2002-12-12 | 2003-05-07 | 上海交通大学 | Ship anchor type anchor head of ground anchor in grouting stretch model |
| JP5290461B1 (en) * | 2012-12-04 | 2013-09-18 | 矢作建設工業株式会社 | Slope reinforcement method |
| CN107386283A (en) * | 2017-07-19 | 2017-11-24 | 中铁四局集团市政工程有限公司 | A kind of anchor rod construction method suitable for mud burning into sand layer |
| CN109826589A (en) * | 2018-12-29 | 2019-05-31 | 北京中岩大地科技股份有限公司 | A kind of confined space high-pressure mortar spraying method and system |
| CN210658343U (en) * | 2019-09-09 | 2020-06-02 | 重庆中辅建设工程有限公司 | Expand body resistance to plucking stock |
| CN110847168A (en) * | 2019-12-12 | 2020-02-28 | 长安大学 | Drilling, anchoring and grouting combined construction device and anchor cable construction method |
| CN111576401A (en) * | 2020-06-01 | 2020-08-25 | 盾构及掘进技术国家重点实验室 | Fast-moving rotary jet grouting equipment and grouting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113175298A (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113175298B (en) | Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process | |
| US4708530A (en) | Concrete foundation pile and device for driving the same into the ground | |
| CN1963043A (en) | Construction method for mechanical hole reaming of anchor rod | |
| CN106836179B (en) | The construction method of vertical strengthening ribs enhanced bellows grouting pile | |
| CN108797579B (en) | Connecting device and connecting method for precast tubular piles | |
| CN213358594U (en) | Constructional engineering pile | |
| US6120214A (en) | Process for constructing reinforced subterranean columns | |
| CN201843132U (en) | Large-aperture deep-pile long-auger drilling rig | |
| US3277968A (en) | Screw piles | |
| CN108222022A (en) | A kind of tubular type Soil-Nailing Wall Structure and its construction method | |
| JP3878104B2 (en) | Construction method of double pipe digging rock bolt using drilling rod | |
| CN115012409B (en) | Anti-floating anchor rod structure and construction method thereof | |
| CN113737801B (en) | Enlarged footing construction equipment | |
| CN115125938A (en) | Composite pile construction method with built-in precast tubular pile | |
| CN115614080A (en) | Recyclable expanded anchor rod and construction method thereof | |
| CN208976901U (en) | A kind of artificial geotome of portable multifunctional | |
| NZ744763A (en) | Method for producing an anchoring tie rod and anchoring tie rod | |
| CN108798528B (en) | Drill bit for breaking waste pipe piles and method for breaking waste pipe piles and filling new piles | |
| CN113737802B (en) | Construction method of enlarged footing | |
| JP6629076B2 (en) | Ground reinforcement method | |
| CN221422781U (en) | Concrete crack reinforcement structure | |
| CN113958352B (en) | Anchor rod suitable for weak broken rock-soil body and construction method | |
| CN111997040B (en) | Long spiral drilling thin-wall pipe pile composite pile foundation construction device and construction method thereof | |
| CN210597312U (en) | Clear hole device of precast tubular pile | |
| CN217128260U (en) | Rock soil slope reinforcement device for preventing slope body from falling off |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |