CN203394556U - Thwart hollow grouting anchor cable - Google Patents
Thwart hollow grouting anchor cable Download PDFInfo
- Publication number
- CN203394556U CN203394556U CN201320395164.XU CN201320395164U CN203394556U CN 203394556 U CN203394556 U CN 203394556U CN 201320395164 U CN201320395164 U CN 201320395164U CN 203394556 U CN203394556 U CN 203394556U
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- CN
- China
- Prior art keywords
- hollow grouting
- anchor cable
- grouting anchor
- thwart
- hollow
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Abstract
The utility model discloses a thwart hollow grouting anchor cable. The thwart hollow grouting anchor cable comprises a hollow grouting anchor cable which extends into a rock-soil drilled hole; the hollow grouting anchor cable is formed by twisting a plurality of high-strength spiral rib pre-stressed steel wires; the back end of the hollow grouting anchor cable is fixedly connected with a transverse damper; the hollow grouting anchor cable passes through the transverse damper; a tray is sleeved on the transverse damper; the transverse damper at the back end of the tray is screwed with a locking nut; the locking nut is pressed against the back end surface of the tray. By the thwart hollow grouting anchor cable, serous fluid is filled in the drilled hole to realize full length anchoring by improving the grouting pressure, meanwhile, the serous fluid is diffused into the rock gaps on the periphery of the drilled hole to achieve an effect of adhering and curing surrounding rock and realize deep hole anchoring and grouting; in addition, the transverse damper has resistance and flexibility, and has constant resistant anti-breaking rigid and flexibility coupled supporting mechanical properties.
Description
Technical field
The utility model relates to soft-rock tunnel, gob side entry, deep tunnel, large chamber, and work plane is widened the view and the special engineering field such as roadway crossing point, is specifically related to a kind of transverse arrest hollow grouting cable anchor.
Background technology
The resin anchor of at present domestic main employing Φ 15.24, Φ 17.8 steel strand processing and fabricatings carries out coal road reinforcing.Resin anchoring anchor cable has to be made simply, and installation rate is fast, carries the advantages such as timely, obtains very soon large scale application.But the high seam workings subject to dy namic pressure in less stable, for example gob side entry driving and some particular locations as large Cross-section Cut, broken area, be subject to roadway influenced by overhead mining that dynamic pressure affects etc., its bearing capacity is on the low side, simultaneously, because anchorage length only has 1/3rd of anchor cable length, belong to end anchorage anchor cable, limited to the reinforcement effect of broken top coal.Along with its consumption is more and more, resin anchoring anchor cable also exposes a series of problem gradually, and the problem wherein having is also very serious.From on-the-spot service condition, the outstanding problem that anchor cable exists: current grouting cable anchor mainly exists following defect:
1, agitating resin anchoring anchor cable supporting capacity is little, and supporting intensity is low, and boring utilization rate is low.Its actual supporting capacity of field measurement only has 220-230KN, at the region of high stress, be hit and press the tunnel of impact often to occur disconnected anchor cable phenomenon, has brought very large hidden danger to supporting reliability.
2, as the support system of agitating resin anchoring, anchor cable diameter is less than normal, does not meet rational “San footpath " matching relationship, more than the annular solid thickness forming after resin anchoring agent solidifies reaches 6mm, anchored force is had to adverse effect.Meanwhile, because anchor cable diameter is less than normal, the weak effect of agitating resin in installation process, easily forms because resin anchoring agent packaging bag plastic sheeting wraps steel strand the anchored force that " Double-skin " reduces anchor cable, does not have due support action.
3,, equally because anchor cable diameter is less than normal, insert in boring procedure easily resin explosive roll is squeezed in a side or through actual anchors maintenance and deposits and move and cannot by designing requirement, anchor in stabilized zone position its validity of such anchor cable.Reliability is well imagined, correspondingly, adopts this anchor cable will inevitably have serious potential safety hazard as Reinforcement.
4, anchor cable is partially soft, during installation, under roof-bolter thrust, easily bend, once and deviate from, because anchor cable elasticity is large, easily hurt sb.'s feelings, sometimes also can install unsuccessfully because hardening of resin causes.
Utility model content
The purpose of this utility model is to provide a kind of transverse arrest hollow grouting cable anchor, by improving grouting pressure, makes slurries when being full of boring, realizing full length fastening, as boring, around in rock fracture, spreads, and country rock is played to adhesive solidification effect, realizes deep hole anchor and notes; Lateral damper plays in anti-and allows in addition, in allowing, have anti-, the Coupled Rigid-flexible supporting mechanical characteristic that constant-resistance is anti-breaking.
The technical solution adopted in the utility model is as follows:
Transverse arrest hollow grouting cable anchor, include the hollow grouting cable anchor extending in ground boring, it is characterized in that: described hollow grouting cable anchor is by several high strength helical rib compressor wires, to compile strand to form, the rear end of hollow grouting cable anchor is fixedly connected with lateral damper, hollow grouting cable anchor is through lateral damper, on lateral damper, be set with pallet, on the lateral damper of pallet rear end, be combined with locking nut, locking nut top is pressed on the rear end face of pallet.
Described transverse arrest hollow grouting cable anchor, is characterized in that: described hollow grouting cable anchor and lateral damper are integrated.
Described transverse arrest hollow grouting cable anchor, is characterized in that: described lateral damper is screwed pipe, and afterbody is centrum shape.
Hollow grouting cable anchor cable body of the present utility model adopts high strength helical rib compressor wire to compile strand and forms.High strength helical rib compressor wire is a kind of novel deforming steel wire, its principal character is the last plastic strain drawing of semiproduct process after calendering drawing process is processed, make Steel Wire Surface form protruding spiral ribs, spiral ribs is integrated with basic circle, the common steel wire that forms same cross section, that is to say that steel wire how long all equates at its sectional area of any point.
Therefore no matter be, that contour processing method material property, material property all have bright steel wire, indented wire and three strands of irreplaceable good characteristics of wire; Have that intensity is high, plasticity good, lax value is low, stretching property good, and the feature such as the bond stress of Anchor Agent is strong.
The beneficial effects of the utility model are:
1, anchor cable is Novel hollow structure, carry slip casting core pipe, adopt reverse grouting mode, not only eliminated the possibility that produces cavity, cave, guarantee that anchoring slurries are full of boring, and saved stack and Grouting Pipe special joint (directly utilizing screw thread locking mechanism as Grouting Pipe joint), and also need not reproduce a binding turns Grouting Pipe, stack and shutoff injected hole, construction sequence is greatly simplified;
2, cable body top is that agitating resin powder stick Duan Mao， lower end adopts screw-threaded coupling, after installation, can carry immediately, and this point is that existing various grouting cable anchor product all cannot be accomplished, and have for the poor top board rock of self-stable ability, is highly beneficial and necessary;
3, lateral damper adopts screw-threaded coupling mode, and retaining mechanism reliable operation, can not skid, and can not produce spark;
4, the required installation of transverse arrest hollow grouting cable anchor aperture is little, has realized small-bore, large-tonnage, and cable body structure itself meets the requirement of high-pressure slip-casting, can realize anchor and note combination, lateral damper plays in anti-and allows in addition, in allowing, have anti-, the Coupled Rigid-flexible supporting mechanical characteristic that constant-resistance is anti-breaking;
5, due to after installing, can carry immediately, so slip casting can be arranged in the rear certain distance of meeting head on the anchor cable of certain limit has once been noted, therefore construction is very convenient;
6, screw thread locking mechanism has aligning function, and the little and uniformity of anchor cable protruded length, does not affect tunnel effective height.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing 1, transverse arrest hollow grouting cable anchor, include the hollow grouting cable anchor 1 extending in ground boring, hollow grouting cable anchor 1 is by several high strength helical rib compressor wires, to compile strand to form, Steel Wire Surface forms the spiral ribs of the continuous shape projection of 3-6 bar, spiral ribs and steel wire basic circle are integrated, the rear end of hollow grouting cable anchor 1 is fixedly connected with lateral damper 2 and is centrum shape for screwed pipe afterbody, on lateral damper 2, be set with pallet 3, on pallet 3 rear ends, be combined with locking nut 4, locking nut 4 tops are pressed on the rear end face of pallet 3.
Claims (3)
1. transverse arrest hollow grouting cable anchor, include the hollow grouting cable anchor extending in ground boring, it is characterized in that: described hollow grouting cable anchor is by several high strength helical rib compressor wires, to compile strand to form, the rear end of hollow grouting cable anchor is fixedly connected with lateral damper, hollow grouting cable anchor is through lateral damper, on lateral damper, be set with pallet, on the lateral damper of pallet rear end, be combined with locking nut, locking nut top is pressed on the rear end face of pallet.
2. transverse arrest hollow grouting cable anchor according to claim 1, is characterized in that: described hollow grouting cable anchor and lateral damper are integrated.
3. transverse arrest hollow grouting cable anchor according to claim 1, is characterized in that: described lateral damper is screwed pipe, and afterbody is centrum shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395164.XU CN203394556U (en) | 2013-07-04 | 2013-07-04 | Thwart hollow grouting anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395164.XU CN203394556U (en) | 2013-07-04 | 2013-07-04 | Thwart hollow grouting anchor cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394556U true CN203394556U (en) | 2014-01-15 |
Family
ID=49906092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320395164.XU Expired - Lifetime CN203394556U (en) | 2013-07-04 | 2013-07-04 | Thwart hollow grouting anchor cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394556U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252882A (en) * | 2018-11-19 | 2019-01-22 | 河南理工大学 | 3rd area of breaking surrounding rock tunnel cooperates with coupling supporting system and its construction method |
| CN111456784A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Constant-resistance anchor cable structure and anchoring method |
| CN115182765A (en) * | 2022-09-14 | 2022-10-14 | 北京中矿创新联盟能源环境科学研究院 | Slip casting NPR anchor cable |
-
2013
- 2013-07-04 CN CN201320395164.XU patent/CN203394556U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252882A (en) * | 2018-11-19 | 2019-01-22 | 河南理工大学 | 3rd area of breaking surrounding rock tunnel cooperates with coupling supporting system and its construction method |
| CN109252882B (en) * | 2018-11-19 | 2024-03-15 | 河南理工大学 | Three-region cooperative coupling supporting system for broken surrounding rock roadway and construction method of three-region cooperative coupling supporting system |
| CN111456784A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Constant-resistance anchor cable structure and anchoring method |
| CN111456784B (en) * | 2020-04-20 | 2021-01-08 | 北京中矿创新联盟能源环境科学研究院 | Constant-resistance anchor cable structure and anchoring method |
| CN115182765A (en) * | 2022-09-14 | 2022-10-14 | 北京中矿创新联盟能源环境科学研究院 | Slip casting NPR anchor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20140115 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230704 Granted publication date: 20140115 |
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| PD01 | Discharge of preservation of patent |