LU502839B1 - Shell expansion yield stress anchor cable and construction method thereof - Google Patents
Shell expansion yield stress anchor cable and construction method thereof Download PDFInfo
- Publication number
- LU502839B1 LU502839B1 LU502839A LU502839A LU502839B1 LU 502839 B1 LU502839 B1 LU 502839B1 LU 502839 A LU502839 A LU 502839A LU 502839 A LU502839 A LU 502839A LU 502839 B1 LU502839 B1 LU 502839B1
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- Prior art keywords
- anchor cable
- yield stress
- section
- anchor
- variable
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- 238000010276 construction Methods 0.000 title claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 239000011435 rock Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000007906 compression Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011443 resin grout Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/006—Anchoring-bolts made of cables or wires
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present disclosure discloses a shell expansion yield stress anchor cable and construction method thereof, and relates to the technical field of underground engineering. An upper end of the shell expansion anchoring part is fixedly installed with the variable- section yield stress anchor cable, and a lower end of the shell expansion anchoring part is fixedly installed with the anchor. The hollow metal tube is arranged in a middle of the anchor cable body, and an outer part of the hollow metal tube wraps the high-strength tapered tube; an outer side of the anchor cable body wraps the variable-section threaded sleeve through the adhesive. The present disclosure is mainly applied to the water-rich tunnel, especially the anchoring support of the high-stress and large-deformation water- rich underground engineering. The variable cross-section allows the compression anchor cable, the shell expansion anchoring part, the anchor and the backing plate to form an anchoring technology that integrates rapid anchoring, compression support and grouting protection. The deformation capacity of the anchor cable is increased by the variable cross-section of the anchor cable, and the post-grouting protection is realized through the hollow metal tube built in the variable-section anchor cable.
Description
BL-5558
LU502839
SHELL EXPANSION YIELD STRESS ANCHOR CABLE AND
CONSTRUCTION METHOD THEREOF
[0001] The present disclosure relates to the technical field of underground engineering, and specifically relates to a shell expansion yield stress anchor cable and construction method thereof.
[0002] At present, in underground projects such as tunnels, bolts are the first choice to achieve the stability of roof, floor and side walls, and have the advantages of good supporting effect, wide applicability and high adaptability. A series of new bolts integrating rapid anchoring and permanent support have also emerged, such as resin grouting bolts, expanding shell grouting bolts and segmented bolts. However, the supporting strength of bolts is lower than the supporting strength of anchor cable. As the tunnel gradually moves to the deep ground, structural belts and other high-stress and complex geological environments, it is difficult to obtain a good supporting effect, and large deformation disasters occur frequently. For this reason, in underground engineering with high stress and large deformation, anchor cable supporting is more and more used.
Among them, the small-diameter resin prestress anchor cable with fast and strong support is the most widely used. The typical application of tunnel engineering is in the Muzhailing highway tunnel, which has achieved a (extremely) substantial reduction in the initial support removal rate. However, the resin anchoring agent will inevitably reduce the anchoring force (extremely) in the water-rich section, and is difficult to exert the advantage of high anchoring force. At the same time, the deformation capacity of the anchor cable is much smaller than the deformation capacity of the anchor rod, and it is easy to break during the support process of large deformation; and the problems mentioned above lead to the failure of the anchor cable support.
[0003] Therefore, as the tunnel project gradually moves to the edge and depth of the
Qinghai-Tibet Plateau, the engineering environment encountered will become more and more complex. Under the current situation that the level of in-situ stress continues to increase and the groundwater is generally developed and connected, the development of a new type of anchor cable whose anchoring force is not affected by the groundwater environment, has large deformation capacity, and can achieve permanent support will greatly assist the support and construction of tunnel projects.
[0004] In view of the shortcomings in the prior art, the purpose of the present disclosure is to provide a shell expansion yield stress anchor cable and construction method thereof.
[0005] The technical purpose mentioned above of the present disclosure is achieved through the following technical solutions.
[0006] A shell expansion yield stress anchor cable, including a variable-section yield stress anchor cable, a shell expansion anchoring part and an anchor; wherein an upper end 1
BL-5558 of the shell expansion anchoring part is fixedly installed with the variable-section yield LU502839 stress anchor cable, and a lower end of the shell expansion anchoring part is fixedly installed with the anchor.
[0007] The variable-section yield stress anchor cable includes: an anchor cable body, a hollow metal tube, a high-strength tapered tube, a variable-section threaded sleeve and an adhesive; the hollow metal tube is arranged in a middle of the anchor cable body, and an outer part of the hollow metal tube wraps the high-strength tapered tube; an outer side of the anchor cable body wraps the variable-section threaded sleeve through the adhesive.
[0008] The shell expansion anchoring part includes: a serrated external wedge body and an inner wedge body with an inner threaded connector, and the inner wedge-shaped body with the inner threaded connector is clamped in the serrated external wedge body.
[0009] The anchor includes: a wedge-shaped clip and a base, wherein the base is installed on an outside of the cable anchor body, and the wedge-shaped clip is inserted between the base and the cable anchor body.
[0010] Preferably, the anchor cable body is composed of multiple layers of steel wires, a middle layer steel wire is arranged on an outside of a central steel wire, and an outermost layer steel wires is wrapped on an outside of the middle layer steel wire.
[0011] The diameter of the middle layer steel wire is smaller than the diameter of the outermost layer steel wire.
[0012] Preferably, the central steel wire of the anchor cable body is a hollow metal tube, the diameter of the hollow metal tube is 5 mm to 10 mm, and a wall thickness of the hollow metal tube is greater than 1 mm, and the central steel wire is arranged along the entire length of the anchor cable body.
[0013] Preferably, a front end of the anchor cable body has an anchor cable front end, a high-strength tapered tube is inserted between the middle layer steel wire and the outermost layer steel wire of the anchor cable front end to form a yield stress tapered end.
[0014] Preferably, an inclination angle of the high-strength conical tube is 15-30° , and a length of the high-strength conical tube is 20-50mm.
[0015] Preferably, the variable-section threaded sleeve is externally placed on the anchor cable front end, and the variable-section threaded sleeve and the anchor cable front end are fixed with the adhesive.
[0016] Preferably, the adhesive is one of a resin grouting, a cement grout or an epoxy resin.
[0017] Preferably, the variable-section threaded sleeve is a circular cross-section with openings at both ends, and the variable-section threaded sleeve is composed of a large cross-section and a small cross-section.
[0018] The diameter of the large cross-section is larger than the maximum diameter 5- 20mm of the yield stress tapered end, and the length of the large cross-section is set according to the actual needs of yield stress slip deformation.
[0019] The diameter of the small cross-section is slightly larger than the minimum diameter of the yield stress tapered end and smaller than the maximum diameter of the yield stress tapered end, and the length of the small cross-section is not less than 50mm.
[0020] Preferably, a front end of the variable-section threaded sleeve is threadedly engaged with the inner wedge body with the inner threaded connector and is directly 2
BL-5558 connected by rotation. LU502839
[0021] The inner wedge body with the inner threaded connector in the middle has a hollow channel.
[0022] The serrated external wedge body is a two-lobed semicircular structure, the outer wall of the serrated external wedge body has a reverse serrated structure, and the inner wall of the serrated external wedge body is fitted with the inner wedge body.
[0023] The wedge-shaped clip has three lobes.
[0024] Another object of the present disclosure is to provide a construction method for the shell expansion yield stress anchor cable, and the construction method for the shell expansion yield stress anchor cable includes the following steps: step 1, determining the target rock mass and open anchor holes on the target rock mass; step 2, connecting the variable-section yield stress anchor cable and the shell expansion anchoring part by threaded rotation; step 3, sending the shell expansion yield stress anchor cable to a bottom of the drilled hole; step 4, pulling outward the anchor cable body to drive the inner wedge shaped body with the inner threaded connector to move to the outside of the anchor hole, and the expansion shell anchor at the bottom of the hole is expanded, and the serrated external wedge body is engaged with the anchor hole to complete the fixation; step 5, installing the backing plate and the anchor in sequence at the rear end of the anchor cable body; step 6, stretching the anchor cable body by using the prestress tensioning equipment to drive the wedge-shaped clip to move outward, and the anchor cable body is released, and the wedge-shaped clip retracts and squeezes the base to complete the prestress loading; step 7, after the tunnel deformation basically completed, carrying out grouting through the external grouting joint of the hollow metal tube, wherein the grouting passes through the hollow metal tube to the hollow channel, the end of the inner wedge-shaped body of the female threaded connection is slurried until the orifice overflows, finally forming a permanent protection for the anchor cable.
[0025] In summary, the present disclosure has the following beneficial effects. (1) . The present disclosure is mainly applied to the water-rich tunnel, especially the anchoring support of the high-stress and large-deformation water-rich underground engineering. The variable cross-section allows the compression anchor cable, the shell expansion anchoring part, the anchor and the backing plate to form an anchoring technology that integrates rapid anchoring, compression support and grouting protection.
The basic principle of anchoring technology is to quickly support the surrounding rock through the occlusal force formed by the expansion shell anchor part and the surrounding rock of the cave wall. The deformation capacity of the anchor cable is increased by the variable cross-section of the anchor cable, and the post-grouting protection is realized through the hollow metal tube built in the variable-section anchor cable. (2) . The present disclosure realizes the rotatable connection between the anchor cable body and the shell expansion anchoring part through the threaded sleeve, and provides a shell expansion anchor cable with simple structure, easy processing and 3
BL-5558 convenient construction. LU502839 (3) . The invention aims at the shortcoming of insufficient deformation capacity of the anchor cable, the invention ensures the constant resistance and yield stress function and enhances the deformation capacity of the anchor cable by allowing shear slip of the yield stress tapered end in the adhesive in the threaded sleeve. Further, the adjustment of the yield stress can be realized by changing the length and angle of the yield stress tapered end, the type of adhesive, the thickness and diameter of the large cross-section of the threaded sleeve, etc. By changing the length of the large cross-section of the threaded sleeve, the yield stress can be adjusted. Beside, the threaded sleeve adopts the form of variable section, by setting the diameter of the small cross-section, it can achieve "stop yield" after reaching the predetermined yield stress, and continues to bear deformation until fracture occurs. (4) . The anchor cable body of the present disclosure adopts the form of multiple steel wires. By setting the central steel wire as a hollow structure, the reverse grouting is realized from the bottom, the post-grouting effect is ensured, and permanent protection is realized.
[0026] To describe the technical solutions in the embodiments of the present disclosure or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.
[0027] FIG. 1 is a cross-sectional schematic structural diagram of a shell expansion yield stress anchor cable according to an embodiment of the present disclosure.
[0028] FIG. 2 is a cross-sectional schematic structural diagram of the shell expansion yield stress anchor cable after yielding and slipping according to an embodiment of the present disclosure.
[0029] FIG. 3 is a side view of a variable-section yield stress anchor cable of the shell expansion yield stress anchor cable after yielding and slipping according to an embodiment of the present disclosure.
[0030] Fig. 4 is a sectional view of the shell expansion yield stress anchor cable at aline 5-5 in FIG. 1 according to an embodiment of the present disclosure.
[0031] Fig. 5 is a sectional view of the shell expansion yield stress anchor cable at a line 6-6 in FIG. 1 according to an embodiment of the present disclosure.
[0032] Fig. 6 is a sectional view of the shell expansion yield stress anchor cable at a line 7-7 in FIG. 1 according to an embodiment of the present disclosure.
[0033] Fig. 7 is a sectional view of the shell expansion yield stress anchor cable at a line 8-8 in FIG. 1 according to an embodiment of the present disclosure.
[0034] FIG. 8 is a schematic diagram of a smooth tapered tube of the shell expansion yield stress anchor cable according to an embodiment of the present disclosure.
[0035] The reference numbers in the drawings are as follows: 10. anchoring agent; 11. 4
BL-5558 external wedge body; 12. inner wedge shaped body with the inner threaded connector; 13. LU502839 yield stress tapered end; 14. anchor cable body; 15. anchor hole; 16. backing plate; 17. base ; 18. wedge-shaped clip; 19. variable-section threaded sleeve; 20. adhesive; 21. anchor cable front end; 31. hollow channel of inner wedge body; 32. yield stress slippage; 40. hollow metal tube; 41. outermost layer steel wire; 42. middle layer steel wire; 45. high-strength tapered tube; 50, variable-section yield stress anchor cable; 60, shell expansion anchoring part; 70, anchor.
[0036] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely some but not all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.
[0037] The present disclosure aims to provide a shell expansion yield stress anchor cable and construction method thereof to solve the problems existing in the prior art.
[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings.
[0039] As shown in FIGS. 1 to 8 , the shell expansion yield stress anchor cable in this embodiment includes a variable-section yield stress anchor cable 50, a shell expansion anchoring part 60, an anchor 70 and a backing plate 16. The variable-section yield stress anchor cable 50 includes an anchor cable body 14, a hollow metal tube 40, a high-strength tapered tube 45, a variable-section threaded sleeve 19 and an adhesive 20. The shell expansion anchoring part 60 includes a serrated external wedge body 11 and an inner wedge body 12 with an inner threaded connector. The anchor 70 includes a wedge-shaped clip 18 and a base 17.
[0040] Further, the anchor cable body 14 is composed of multiple layers of steel wires, including one central steel wire 40, eight middle layer steel wires 42 and eight outermost layer steel wires 41. The diameter of the middle layer steel wire 42 is smaller than the diameter of the outermost layer steel wire 41.
[0041] Further, the central steel wire 40 of the anchor cable body is a hollow metal tube with a diameter of 5-10 mm and a wall thickness greater than 1 mm, and the central steel wire is arranged along the entire length of the anchor cable body.
[0042] A high-strength tapered tube 45 is placed between the middle layer steel wire 42 and the outermost layer steel wire 41 of a anchor cable front end 21 to form a yield stress tapered end 13.
[0043] An inclination angle of the high-strength conical tube 45 is 15-30°, and a length of the high-strength conical tube is 20-50mm.
[0044] The variable-section threaded sleeve 19 is externally placed on the anchor cable front end 21, and the variable-section threaded sleeve 19 and the anchor cable front end 5
BL-5558 21 are fixed by the adhesive 20. LU502839
[0045] The adhesive 20 may be a resin grout, a cement grout or an epoxy resin.
[0046] The variable cross-section threaded sleeve 19 is a circular cross-section with openings at both ends, and is composed of a large cross-section and a small cross-section.
The diameter of the large cross-section is larger than the maximum diameter 5-20mm of the yield stress tapered end 13, and the length of the large cross-section is set according to the actual needs of yield stress slip deformation. The diameter of the small cross-section is slightly larger than the minimum diameter of the yield stress tapered end 13 and smaller than the maximum diameter of the yield stress tapered end 13, and the length of the small cross-section is not less than 50mm.
[0047] A front end of the variable-section threaded sleeve 19 is threadedly engaged with the inner wedge body 12 with the inner threaded connector and is directly connected by rotation.
[0048] The inner wedge body 12 with the inner threaded connector in the middle has a hollow channel 31.
[0049] The serrated external wedge body 11 is a two-lobed semicircular structure, the outer wall of the serrated external wedge body has a reverse serrated structure, and the inner wall of the serrated external wedge body is fitted with the inner wedge body 12.
[0050] The wedge-shaped clip 18 has three lobes.
[0051] Based on the shell expansion yield stress anchor cable mentioned above, the present embodiment also provides a construction method for the shell expansion yield stress anchor cable, the installation steps include: step 1, determining the target rock mass and open anchor holes on the target rock mass 15; step 2, connecting the variable-section yield stress anchor cable 50 and the shell expansion anchoring part 60 by threaded rotation; step 3, sending the shell expansion yield stress anchor cable to a bottom of the drilled hole; step 4, pulling outward the anchor cable body 14 to drive the inner wedge shaped body 12 with the inner threaded connector to move to the outside of the anchor hole, so that the expansion shell anchor 60 at the bottom of the hole is expanded, and the serrated external wedge body 11 is engaged with the anchor hole 15 to complete the fixation; step 5, installing the backing plate 16 and the anchor 70 in sequence at the rear end of the anchor cable body 14; step 6, stretching the anchor cable body 14 by using the prestress tensioning equipment to drive the wedge-shaped clip 18 to move outward, so that the anchor cable body 14 is released, and the wedge-shaped clip 18 retracts and squeezes the base 17 to complete the prestress loading; step 7, after the tunnel deformation basically completed, carrying out grouting through the external grouting joint of the hollow metal tube 40, wherein the grouting passes through the hollow metal tube 40 to the hollow channel 31, the end of the inner wedge-shaped body 12 of the female threaded connection is slurried until the orifice overflows, finally forming a permanent protection for the anchor cable.
[0052] The present disclosure uses specific examples to illustrate the principles and 6
BL-5558
. . . . . . LU502839 implementations of the present disclosure, The description of the above embodiments 1s only used to help understand the method and core idea of the present disclosure.
At the same time, for a person skilled in the art, according to the idea of the present disclosure,
there are changes in the specific embodiments and application scopes.
In conclusion, the contents of this specification should not be construed as limiting the present disclosure. 7
Claims (10)
1. À shell expansion yield stress anchor cable, comprising a variable-section yield stress anchor cable (50), a shell expansion anchoring part (60) and an anchor (70); wherein an upper end of the shell expansion anchoring part (60) is fixedly installed with the variable-section yield stress anchor cable (50), and a lower end of the shell expansion anchoring part (60) is fixedly installed with the anchor (70); the variable-section yield stress anchor cable (50) comprises: an anchor cable body (14), a hollow metal tube (40), a high-strength tapered tube (45), a variable-section threaded sleeve (19) and an adhesive (20); the hollow metal tube (40) is arranged in a middle of the anchor cable body (14), and an outer part of the hollow metal tube (40) wraps the high-strength tapered tube (45); an outer side of the anchor cable body (14) wraps the variable-section threaded sleeve (19) through the adhesive (20); the shell expansion anchoring part (60) comprises: a serrated external wedge body (11) and an inner wedge body (12) with an inner threaded connector, and the inner wedge- shaped body (12) with the inner threaded connector is clamped in the serrated external wedge body (11); the anchor comprises: a wedge-shaped clip (18) and a base (17), wherein the base (17) is installed on an outside of the cable anchor body (14), and the wedge-shaped clip (18) is inserted between the base (17) and the cable anchor body (14).
2. The shell expansion yield stress anchor cable according to claim 1, wherein the anchor cable body (14) is composed of multiple layers of steel wires, a middle layer steel wire (42) is arranged on an outside of a central steel wire, and an outermost layer steel wires (41) is wrapped on an outside of the middle layer steel wire (42); the diameter of the middle layer steel wire (42) is smaller than the diameter of the outermost layer steel wire (41).
3. The shell expansion yield stress anchor cable according to claim 2, wherein the central steel wire of the anchor cable body (14) is a hollow metal tube (40), the diameter of the hollow metal tube (40) is 5 mm to 10 mm, and a wall thickness of the hollow metal tube (40) is greater than 1 mm, and the central steel wire is arranged along the entire length of the anchor cable body. 8
BL-5558
4. The shell expansion yield stress anchor cable according to claim 2, wherein a front LU502839 end of the anchor cable body (14) has an anchor cable front end (21), a high-strength tapered tube (45) is inserted between the middle layer steel wire (42) and the outermost layer steel wire (41) of the anchor cable front end to form a yield stress tapered end (13).
5. The shell expansion yield stress anchor cable according to claim 4, wherein an inclination angle of the high-strength conical tube (45) is 15-30° , and a length of the high-strength conical tube is 20-50mm.
6. The shell expansion yield stress anchor cable according to claim 1, wherein the variable-section threaded sleeve (19) is externally placed on the anchor cable front end (21), and the variable-section threaded sleeve (19) and the anchor cable front end (21) are fixed with the adhesive (20).
7. The shell expansion yield stress anchor cable according to claim 6, wherein the adhesive (20) is one of a resin grouting, a cement grout or an epoxy resin.
8. The shell expansion yield stress anchor cable according to claim 1, wherein the variable-section threaded sleeve (19) is a circular cross-section with openings at both ends, and the variable-section threaded sleeve (19) is composed of a large cross-section and a small cross-section; the diameter of the large cross-section is larger than the maximum diameter 5-20mm of the yield stress tapered end (13), and the length of the large cross-section is set according to the actual needs of yield stress slip deformation; the diameter of the small cross-section is slightly larger than the minimum diameter of the yield stress tapered end (13) and smaller than the maximum diameter of the yield stress tapered end (13), and the length of the small cross-section is not less than SOmm.
9. The shell expansion yield stress anchor cable according to claim 1, wherein a front end of the variable-section threaded sleeve (19) is threadedly engaged with the inner wedge body (12) with the inner threaded connector and is directly connected by rotation; the inner wedge body (12) with the inner threaded connector in the middle has a hollow channel (31); 9
BL-5558 the serrated external wedge body (11) is a two-lobed semicircular structure, the outer 502899 wall of the serrated external wedge body has a reverse serrated structure, and the inner wall of the serrated external wedge body is fitted with the inner wedge body (12); and the wedge-shaped clip (18) has three lobes.
10. A construction method for realizing the shell expansion yield stress anchor cable according to any one of claims 1-9, comprising the following steps: step 1, determining the target rock mass and open anchor holes on the target rock mass (15); step 2, connecting the variable-section yield stress anchor cable (50) and the shell expansion anchoring part (60) by threaded rotation; step 3, sending the shell expansion yield stress anchor cable to a bottom of the drilled hole; step 4, pulling outward the anchor cable body (14) to drive the inner wedge shaped body (12) with the inner threaded connector to move to the outside of the anchor hole, and the expansion shell anchor (60) at the bottom of the hole is expanded, and the serrated external wedge body (11) is engaged with the anchor hole (15) to complete the fixation; step 5, installing the backing plate (16) and the anchor (70) in sequence at the rear end of the anchor cable body (14); step 6, stretching the anchor cable body (14) by using the prestress tensioning equipment to drive the wedge-shaped clip (18) to move outward, and the anchor cable body (14) is released, and the wedge-shaped clip (18) retracts and squeezes the base (17) to complete the prestress loading; step 7, after the tunnel deformation basically completed, carrying out grouting through the external grouting joint of the hollow metal tube (40), wherein the grouting passes through the hollow metal tube (40) to the hollow channel (31), the end of the inner wedge-shaped body (12) of the female threaded connection is slurried until the orifice overflows, finally forming a permanent protection for the anchor cable. 10
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198440.9A CN113944492B (en) | 2021-10-14 | 2021-10-14 | Expansion shell type yielding anchor cable and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU502839B1 true LU502839B1 (en) | 2023-04-21 |
Family
ID=79330485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU502839A LU502839B1 (en) | 2021-10-14 | 2022-08-22 | Shell expansion yield stress anchor cable and construction method thereof |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN113944492B (en) |
| LU (1) | LU502839B1 (en) |
| WO (1) | WO2023061044A1 (en) |
| ZA (1) | ZA202302146B (en) |
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|---|---|---|---|---|
| CN113944492B (en) * | 2021-10-14 | 2024-05-17 | 中铁隧道集团二处有限公司 | Expansion shell type yielding anchor cable and construction method thereof |
| CN114991839B (en) * | 2022-06-08 | 2024-02-20 | 福州大学 | Push pipe type deformation assembly for anchor cable and anchor rod and application method thereof |
| CN115898494B (en) * | 2022-11-24 | 2023-09-08 | 宁波大学 | High-elongation basalt fiber anti-corrosion anchor cable and supporting method thereof |
| CN116181384B (en) * | 2023-03-28 | 2023-09-15 | 成都理工大学 | Quick hybrid anchoring pre-stressed anchor cable and construction method thereof |
| CN116988825B (en) * | 2023-09-25 | 2023-12-05 | 中国矿业大学(北京) | Resistance-increasing large-deformation grouting anchor rod and application method |
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|---|---|---|---|---|
| CN201982124U (en) * | 2011-01-18 | 2011-09-21 | 李文惠 | Improved grouting anchor rope |
| AU2013203198B2 (en) * | 2012-06-18 | 2016-01-14 | Sandvik Intellectual Property Ab | An anchor mechanism and a cable rock bolt |
| CN102953377B (en) * | 2012-11-12 | 2015-04-01 | 杭州图强工程材料有限公司 | Pressure-release anchor cable |
| CN105626112B (en) * | 2016-01-08 | 2019-01-04 | 尤洛卡（山东）环境工程有限公司 | A kind of suspension device and its application method based on built-in constant-resistance device |
| CN205349392U (en) * | 2016-01-28 | 2016-06-29 | 山东安科矿山支护技术有限公司 | Large aperture slip casting anchor rope |
| CN107237646B (en) * | 2017-06-28 | 2019-04-26 | 山东科技大学 | Large deformation constant resistance supporting grouted anchor bar, anchor cable and tunnel quantify method for protecting support |
| CN209430233U (en) * | 2018-08-23 | 2019-09-24 | 成都现代万通锚固技术有限公司 | One kind rises shell anchorage head |
| CN108915746A (en) * | 2018-08-30 | 2018-11-30 | 沈阳建筑大学 | Expansion type rock bolt permanent support structure with interim detachable Fuse Type anchor cable |
| CN111456782B (en) * | 2020-04-07 | 2021-08-24 | 杭州图强工程材料有限公司 | Grouting bonding prestress yielding anchor rod and construction method thereof |
| CN111794793A (en) * | 2020-07-30 | 2020-10-20 | 陕西惠天煤矿工程技术有限公司 | Double-pressure-equalizing rapid anchor rod and construction method thereof |
| CN112196596B (en) * | 2020-10-15 | 2022-04-29 | 山东科技大学 | Grouting anchor rod cable combination beam for advanced support of deep broken surrounding rock and support method |
| CN112253199B (en) * | 2020-10-28 | 2022-07-05 | 杭州图强工程材料有限公司 | Anchor cable with hole bottom yielding device and construction method thereof |
| CN113062760A (en) * | 2021-04-13 | 2021-07-02 | 中铁隧道集团二处有限公司 | Tunnel supporting method based on yielding anchor cable |
| CN113944492B (en) * | 2021-10-14 | 2024-05-17 | 中铁隧道集团二处有限公司 | Expansion shell type yielding anchor cable and construction method thereof |
-
2021
- 2021-10-14 CN CN202111198440.9A patent/CN113944492B/en active Active
-
2022
- 2022-08-22 LU LU502839A patent/LU502839B1/en active IP Right Grant
- 2022-08-22 WO PCT/CN2022/113897 patent/WO2023061044A1/en unknown
-
2023
- 2023-02-21 ZA ZA2023/02146A patent/ZA202302146B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023061044A1 (en) | 2023-04-20 |
| ZA202302146B (en) | 2023-09-27 |
| CN113944492A (en) | 2022-01-18 |
| CN113944492B (en) | 2024-05-17 |
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