CN104963710A - Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof - Google Patents
Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof Download PDFInfo
- Publication number
- CN104963710A CN104963710A CN201510419832.1A CN201510419832A CN104963710A CN 104963710 A CN104963710 A CN 104963710A CN 201510419832 A CN201510419832 A CN 201510419832A CN 104963710 A CN104963710 A CN 104963710A
- Authority
- CN
- China
- Prior art keywords
- grouting anchor
- hollow grouting
- sleeve
- hollow
- anchor
- 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.)
- Pending
Links
Abstract
The invention provides a hollow grouting anchor rod with the anti-shock constant-resistance performance and a using method thereof. The problem that an existing grouting anchor rod is low in extending rate and is of a structure needing to be optimized is solved. The hollow grouting anchor rod with the anti-shock constant-resistance performance comprises an anchor head, a hollow grouting anchor rod, a grouting stop plug, a sleeve, an end cover, a chemical grouting material layer, a tray, a welding metal casing pipe and a conical nut. The front end of the hollow grouting anchor rod is connected with the anchor head, the front end of the hollow grouting anchor rod is sleeved with the grouting stop plug, the front end of the hollow grouting anchor rod is sleeved with the sleeve, the front end of the sleeve abuts against the grouting stop plug, the end cover is arranged on the front portion inside the sleeve and arranged on the hollow grouting anchor rod in a sleeving mode, the chemical grouting material layer is arranged in the sleeve and arranged on the hollow grouting anchor rod in a sleeving mode, the rear end of the sleeve is sleeved with the tray, the welding metal casing pipe is arranged at the rear end of the sleeve, and the conical nut is in threaded connection with the rear end of the anchor rod and abuts against the chemical grouting material layer. The hollow grouting anchor rod has the advantages of having the ability of resisting surrounding rock deformation on the constant resistance condition and the ability of absorbing surrounding rock deformation energy and impact variable, and being convenient to install and high in practicability.
Description
Technical field
The present invention relates to the anchoring support field being applicable to the underground construction such as tunnel, mine, refer to a kind of hollow grouting anchor and the using method thereof with shock resistance constant-resistance performance especially.
Background technology
Tradition hollow grouting anchor is as support apparatus conventional in underground construction, during for underground engineering construction, the rock burst that tunnel and tunnel occur or impact can not play effective energy-absorbing buffering effect, the moment that can occur in rock burst or impact is thrust destruction of even bursting apart, the energy that thus country rock cannot be made constantly to gather outwards discharges, and this is also the defect of conventional anchor.
In addition, though tradition grouted anchor bar can regulate and control the supporting capacity of country rock self, but when underground geotechnical engineering buried depth is comparatively large or Surrounding Rock Strength is lower, its country rock can present deflection excessive, resist the feature that rock mass gathers fault offset impact resistance difference, exist thus and occur that rock burst causes tunnel to collapse, the potential danger of device damage, casualties.Now traditional grouted anchor bar cannot meet the large deformation requirement of country rock due to restriction that self elongation per unit length is low, thus causes the disrumpent feelings inefficacy of grouted anchor bar, loses supporting meaning.In addition, traditional grouted anchor bar component are more, need to be optimized structure.
Summary of the invention
The present invention proposes a kind of hollow grouting anchor and the using method thereof with shock resistance constant-resistance performance, solves grouted anchor bar self elongation per unit length in prior art low, and the problem that structure needs to be optimized.
Technical scheme of the present invention is achieved in that
There is a hollow grouting anchor for shock resistance constant-resistance performance, comprising:
Anchor head;
Hollow grouting anchor, described hollow grouting anchor front end is connected with described anchor head;
Stop grouting plug, is sheathed on described hollow grouting anchor front end;
Sleeve, is sheathed on described hollow grouting anchor front end, and described barrel forward end is resisted against on described stop grouting plug;
End cap, is arranged in described sleeve anterior, and is sheathed on described hollow grouting anchor;
Chemical slip casting material layer, is arranged in described sleeve, and is sheathed on described hollow grouting anchor;
Pallet, is sheathed on described sleeve rear end;
For described pallet being limited in the weld metal sleeve pipe on described sleeve, be arranged at described sleeve rear end;
Tapered cup nut, is threaded with described hollow grouting anchor rear end, is resisted against on described chemical slip casting material layer.
Preferably, described end cap outside in described sleeve match cylindrical, described cover internal is truncated cone-shaped hollow cavity.
Preferably, described end cap is welded in described sleeve anterior.
Preferably, described tapered cup nut is outer anterior in truncated cone-shaped structure, and the outer afterbody of described tapered cup nut is hex nut structure, and described tapered cup nut inside is in the shape of threads hollow cavity mated with described hollow grouting anchor.
Further, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, also comprises:
Taper sheath, is threaded with described hollow grouting anchor rear end, and be arranged between described tapered cup nut and described chemical slip casting material layer, described taper sheath is resisted against on described chemical slip casting material layer, and described tapered cup nut is resisted against on described taper sheath.
Preferably, described taper sheath outside is in the truncated cone-shaped structure of mating with described cover internal, and described taper sheath inside is in the anterior truncated cone-shaped hollow cavity that mate outer with described tapered cup nut.
A using method for hollow grouting anchor as above, comprises the steps:
1) hole at scar;
2) to step 1) described hole carries out reaming;
3) in step 2) hollow grouting anchor as above is installed in described hole.
Beneficial effect of the present invention is:
1, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, end cap is arranged in sleeve anterior, and connected by welding manner, stability when improve use and life-span, have employed tapered cup nut simultaneously, decrease use step, easy for installation, practical, considerably increase the reasonability of structure design.
2, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, its constant-resistance, deformability can design different parameters according to field geology conditions, anchor pole performance etc., make the hollow grouting anchor of different size, the preferred adjustable extent of constant-resistance is 70kN ~ 180kN, and the preferred adjustable extent of constant-resistance deflection is 200mm ~ 500mm.
3, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, both the ability of surrouding rock deformation was resisted under there is constant-resistance condition, there is again the ability absorbing surrouding rock deformation energy and impact variable, solve the disrumpent feelings supporting Problem of Failure caused of traditional grouted anchor bar distortion, be mainly applicable to high stressed soft rock, swell potential index, be positioned at earthquake zone or have burst trend etc. that country rock large deformation may occur the construction of tunnel destroyed.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation with the hollow grouting anchor of shock resistance constant-resistance performance of the present invention;
Fig. 2 is a kind of structural representation with the constant-resistance deformed component be made up of sleeve, end cap, chemical slip casting material layer, pallet, weld metal sleeve pipe, tapered cup nut and taper sheath of the hollow grouting anchor of shock resistance constant-resistance performance of the present invention;
Fig. 3 is a kind of another structural representation with the constant-resistance deformed component be made up of sleeve, end cap, chemical slip casting material layer, pallet, weld metal sleeve pipe, tapered cup nut and taper sheath of the hollow grouting anchor of shock resistance constant-resistance performance of the present invention.
In figure:
1, anchor head; 2, hollow grouting anchor; 3, stop grouting plug; 4, sleeve; 5, end cap; 6, chemical slip casting material layer; 7, pallet; 8, weld metal sleeve pipe; 9, tapered cup nut; 10, taper sheath; 11, scar; 12, spiral wing; 13, spike-tooth.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As Figure 1-3, a kind of hollow grouting anchor with shock resistance constant-resistance performance of the present invention, comprising:
Anchor head 1;
Hollow grouting anchor 2, hollow grouting anchor 2 front end is connected with anchor head 1;
Stop grouting plug 3, is sheathed on hollow grouting anchor 2 front end;
Sleeve 4, is sheathed on hollow grouting anchor 2 front end, and sleeve 4 front end is resisted against on stop grouting plug 3;
End cap 5, is arranged in sleeve 4 anterior, and is sheathed on hollow grouting anchor 2;
Chemical slip casting material layer 6, is arranged in sleeve 4, and is sheathed on hollow grouting anchor 2;
Pallet 7, is sheathed on sleeve 4 rear end;
For pallet 7 being limited in the weld metal sleeve pipe 8 on sleeve 4, be arranged at sleeve 4 rear end;
Tapered cup nut 9, is threaded with hollow grouting anchor 2 rear end, is resisted against on chemical slip casting material layer 6.
Wherein, chemical slip casting material layer 6 is close to sleeve 4 inwall, and be sheathed on hollow grouting anchor 2 and form hollow structure, chemical slip casting material layer 6 component and ratio can intensity according to actual needs adjust, chemical slip casting material layer 6 can be the inorganic material layer of intensity adjustable structure, such as soft loess and iron pieces mixture material layer; Also can be organic material layer, such as macromolecule resin material layer.Weld metal sleeve pipe 8 is fixed into as a whole by welding and sleeve 4, hollow grouting anchor 2 is specially glass fiber reinforced plastic hollow grouting anchor, adopt glass steel material, anchor pole is easily cut, intensity is high, moment of torsion is high, can from hole diameter slip casting simultaneously, antistatic, spark can not be produced during cutting, very favourable to tunnel safety construction, be particularly suitable for high methane concentration range, body of rod tension is strong, lever strength is better than the level of equal diameter reinforcing bar, product is light easy to operate, weight is 1/4 of the reinforcing bar of equivalent specifications, make construction easier, thus alleviate labor strength, can also reduce reinforcing bar produces the energy consumption and environment pollution that bring simultaneously, certainly, anticorrosion iff consideration, also can at hollow grouting anchor 2 and anchor head 1, sleeve 4 is provided with galvanizing by dipping coating from inside to outside successively, Zinc phosphating coating and powder thermosetting coating, the R. concomitans of multiple anticorrosive coat, very big enhancing decay resistance, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention is made to be provided with permanent support power, improve the reliability of its permanent support, make to be greater than 100 years its application life and become possibility.
Wherein, preferably, described end cap 5 outside in sleeve 4 match cylindrical, end cap 5 inside is in truncated cone-shaped hollow cavity.
Wherein, preferably, described end cap 5 is welded in sleeve 4 anterior.Certainly, it is anterior that end cap 5 can also adopt alternate manner to be fixed in sleeve 4, and such as adopt one-body molded etc., the present invention does not limit this, as long as in use end cap 5 and sleeve 4 relative displacement do not occur.
Wherein, preferably, the outer front portion of described tapered cup nut 9 is in truncated cone-shaped structure, and the outer afterbody of tapered cup nut 9 is hex nut structure, and tapered cup nut 9 inside is in the shape of threads hollow cavity mated with hollow grouting anchor 2.
Wherein, preferably, described anchor head 1 is provided with some arc barbs, squeezes in the pre-drilled hole of rock mass and ensures that barb snaps in the rock mass of periphery, make anchor head 1 and hollow grouting anchor 2 more stable; Hollow grouting anchor 2 and/or sleeve 4 are provided with spiral wing 12, can increase adhesion; The side that pallet 7 contacts with scar 11 is provided with some spike-tooths 13, and spike-tooth 13 can prevent pallet 7 from rotating or being shifted.
The hollow grouting anchor with shock resistance constant-resistance performance of the present invention, can also comprise:
Taper sheath 10, is threaded with hollow grouting anchor 2 rear end, is arranged between tapered cup nut 9 and chemical slip casting material layer 6, and taper sheath 10 is resisted against on chemical slip casting material layer 6, and tapered cup nut 9 is resisted against on taper sheath 10.
Wherein, preferably, described taper sheath 10 outside is in the truncated cone-shaped structure with end cap 5 matching internal, and taper sheath 10 inside is in the anterior truncated cone-shaped hollow cavity that mate outer with tapered cup nut 9.Wherein, taper sheath 10 maximum outside diameter is all greater than end cap 5 minimum diameter, and taper sheath 10 maximum outside diameter is all less than sleeve 4 internal diameter, and taper sheath 10 is used for coatedly blocking tapered cup nut 9, plays orientation when mounted.
Present invention also offers a kind of using method as above with the hollow grouting anchor of shock resistance constant-resistance performance, comprise the steps:
1) hole at scar;
2) to step 1) hole carries out reaming;
Particularly, reaming length, aperture are according to the hollow grouting anchor length of shock resistance constant-resistance performance, diameter and determining;
3) in step 2) in hole installation there is the hollow grouting anchor of shock resistance constant-resistance performance as claimed in claim 6.
Particularly, hollow grouting anchor 2 tail end after anchoring is set with stop grouting plug 3 successively, and the constant-resistance deformed component to be made up of sleeve 4, end cap 5, chemical slip casting material layer 6, pallet 7, weld metal sleeve pipe 8, tapered cup nut 9 and taper sheath 10, during construction, make that scar 11 is close to by pallet 7, pallet 7 is close to by weld metal sleeve pipe 8, tapered cup nut 9 is close to taper sheath 10, tighten tapered cup nut 9 and apply pretightning force to hollow grouting anchor 2.
After having constructed, if country rock generation large deformation, then sleeve 4, end cap 5, chemical slip casting material layer 6, pallet 7 and weld metal sleeve pipe 8 produce relative displacement along with scar 11 and anchor head 1, hollow grouting anchor 2, tapered cup nut 9 and taper sheath 10, the frictional force that now tapered cup nut 9 extrudes suffered by chemical slip casting material layer 6 is constant-resistance, when tapered cup nut 9 moves to the position of end cap 5, end cap 5 and tapered cup nut 9 locking are blocked, now namely reach its maximum displacement deflection, complete constant-resistance distortion function; In addition, when above-mentioned relative displacement occurs, just sleeve 4, end cap 5, chemical slip casting material layer 6, pallet 7 and weld metal sleeve pipe 8 are moving along with scar 11, and hollow grouting anchor 2, taper sheath 10, tapered cup nut 9 there is no movement.
The hollow grouting anchor with shock resistance constant-resistance performance of the present invention, has the following advantages:
1, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, end cap 5 is arranged in sleeve 4 anterior, and connected by welding manner, stability when improve use and life-span, have employed tapered cup nut 9 simultaneously, decrease use step, easy for installation, practical, considerably increase the reasonability of structure design.
2, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, its constant-resistance, deformability can design different parameters according to field geology conditions, anchor pole performance etc., make the hollow grouting anchor of different size, the preferred adjustable extent of constant-resistance is 70kN ~ 180kN, and the preferred adjustable extent of constant-resistance deflection is 200mm ~ 500mm.
3, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, both the ability of surrouding rock deformation was resisted under there is constant-resistance condition, there is again the ability absorbing surrouding rock deformation energy and impact variable, solve the disrumpent feelings supporting Problem of Failure caused of traditional grouted anchor bar distortion, be mainly applicable to high stressed soft rock, swell potential index, be positioned at earthquake zone or have burst trend etc. that country rock large deformation may occur the construction of tunnel destroyed.
In addition, the hollow grouting anchor with shock resistance constant-resistance performance of the present invention, can also by hollow grouting anchor 2 change bit anchor cable, and namely hollow grouting anchor 2 can be interpreted as that it can be rigid objects, also can be flexible article.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. there is a hollow grouting anchor for shock resistance constant-resistance performance, it is characterized in that, comprising:
Anchor head (1);
Hollow grouting anchor (2), described hollow grouting anchor (2) front end is connected with described anchor head (1);
Stop grouting plug (3), is sheathed on described hollow grouting anchor (2) front end;
Sleeve (4), is sheathed on described hollow grouting anchor (2) front end, and described sleeve (4) front end is resisted against on described stop grouting plug (3);
End cap (5), is arranged in described sleeve (4) anterior, and is sheathed on described hollow grouting anchor (2);
Chemical slip casting material layer (6), is arranged in described sleeve (4), and is sheathed on described hollow grouting anchor (2);
Pallet (7), is sheathed on described sleeve (4) rear end;
For described pallet (7) being limited in the weld metal sleeve pipe (8) on described sleeve (4), be arranged at described sleeve (4) rear end;
Tapered cup nut (9), is threaded with described hollow grouting anchor (2) rear end, is resisted against on described chemical slip casting material layer (6).
2. the hollow grouting anchor with shock resistance constant-resistance performance according to claim 1, it is characterized in that, described end cap (5) outside in described sleeve (4) match cylindrical, described end cap (5) inside is in truncated cone-shaped hollow cavity.
3. the hollow grouting anchor with shock resistance constant-resistance performance according to claim 2, is characterized in that, described end cap (5) is welded in described sleeve (4) anterior.
4. the hollow grouting anchor with shock resistance constant-resistance performance according to claim 3, it is characterized in that, described tapered cup nut (9) is anterior in truncated cone-shaped structure outward, described tapered cup nut (9) outer afterbody is hex nut structure, and described tapered cup nut (9) inside is in the shape of threads hollow cavity mated with described hollow grouting anchor (2).
5. the hollow grouting anchor with shock resistance constant-resistance performance according to claim 4, is characterized in that, also comprise:
Taper sheath (10), be threaded with described hollow grouting anchor (2) rear end, be arranged between described tapered cup nut (9) and described chemical slip casting material layer (6), described taper sheath (10) is resisted against on described chemical slip casting material layer (6), and described tapered cup nut (9) is resisted against on described taper sheath (10).
6. the hollow grouting anchor with shock resistance constant-resistance performance according to claim 5, it is characterized in that, described taper sheath (10) outside is in the truncated cone-shaped structure with described end cap (5) matching internal, and described taper sheath (10) inside is and described tapered cup nut (9) the anterior truncated cone-shaped hollow cavity mated outward.
7. there is a using method for the hollow grouting anchor of shock resistance constant-resistance performance as claimed in claim 6, it is characterized in that, comprise the steps:
1) hole at scar;
2) to step 1) described hole carries out reaming;
3) in step 2) in described hole installation there is the hollow grouting anchor of shock resistance constant-resistance performance as claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419832.1A CN104963710A (en) | 2015-07-16 | 2015-07-16 | Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419832.1A CN104963710A (en) | 2015-07-16 | 2015-07-16 | Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104963710A true CN104963710A (en) | 2015-10-07 |
Family
ID=54217771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510419832.1A Pending CN104963710A (en) | 2015-07-16 | 2015-07-16 | Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104963710A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298526A (en) * | 2015-11-30 | 2016-02-03 | 中国葛洲坝集团第三工程有限公司 | Energy-absorption anchor rod for relieving danger of deeply-buried hydraulic tunnel surrounding rock burst and method |
| CN108119175A (en) * | 2016-11-29 | 2018-06-05 | 辽宁工程技术大学 | A kind of resigning buffering energy-absorbing impact preventing anchor rod |
| WO2019237859A1 (en) * | 2018-06-11 | 2019-12-19 | 东北大学 | Self-expanding anchor bolt and preparation method and use method thereof |
| CN112211656A (en) * | 2020-10-16 | 2021-01-12 | 青岛理工大学 | Prestressed constant-resistance grouting anchor rod device and working method |
| CN114840940A (en) * | 2022-05-12 | 2022-08-02 | 中国中煤能源股份有限公司 | Roadway anchor rod support design method in strong corrosion and impact environment |
| WO2023142654A1 (en) * | 2022-09-14 | 2023-08-03 | 中国矿业大学(北京) | Large-deformation and constant-resistance support grouting anchor cable |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648431A (en) * | 1979-09-26 | 1981-05-01 | Sato Kogyo Kk | Anchoring method |
| JPS58138827A (en) * | 1982-02-12 | 1983-08-17 | Tokyu Constr Co Ltd | Construction of composite anchor |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN201125742Y (en) * | 2007-12-19 | 2008-10-01 | 中国葛洲坝集团股份有限公司 | Expansion sheath type anchor rod |
| CN201258485Y (en) * | 2008-08-19 | 2009-06-17 | 中国葛洲坝集团股份有限公司 | Novel pressure dispersion type pre-stress cable |
| CN103670466A (en) * | 2013-11-28 | 2014-03-26 | 尤洛卡矿业安全工程股份有限公司 | Constant-resistance deformer |
| CN203515628U (en) * | 2013-10-08 | 2014-04-02 | 尤洛卡矿业安全工程股份有限公司 | Friction-type constant-resistance large-deformation anchor rod |
| CN204783078U (en) * | 2015-07-16 | 2015-11-18 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Cavity slip casting stock with constant -resistance of shocking resistance performance |
-
2015
- 2015-07-16 CN CN201510419832.1A patent/CN104963710A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648431A (en) * | 1979-09-26 | 1981-05-01 | Sato Kogyo Kk | Anchoring method |
| JPS58138827A (en) * | 1982-02-12 | 1983-08-17 | Tokyu Constr Co Ltd | Construction of composite anchor |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN201125742Y (en) * | 2007-12-19 | 2008-10-01 | 中国葛洲坝集团股份有限公司 | Expansion sheath type anchor rod |
| CN201258485Y (en) * | 2008-08-19 | 2009-06-17 | 中国葛洲坝集团股份有限公司 | Novel pressure dispersion type pre-stress cable |
| CN203515628U (en) * | 2013-10-08 | 2014-04-02 | 尤洛卡矿业安全工程股份有限公司 | Friction-type constant-resistance large-deformation anchor rod |
| CN103670466A (en) * | 2013-11-28 | 2014-03-26 | 尤洛卡矿业安全工程股份有限公司 | Constant-resistance deformer |
| CN204783078U (en) * | 2015-07-16 | 2015-11-18 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Cavity slip casting stock with constant -resistance of shocking resistance performance |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298526A (en) * | 2015-11-30 | 2016-02-03 | 中国葛洲坝集团第三工程有限公司 | Energy-absorption anchor rod for relieving danger of deeply-buried hydraulic tunnel surrounding rock burst and method |
| CN108119175A (en) * | 2016-11-29 | 2018-06-05 | 辽宁工程技术大学 | A kind of resigning buffering energy-absorbing impact preventing anchor rod |
| WO2019237859A1 (en) * | 2018-06-11 | 2019-12-19 | 东北大学 | Self-expanding anchor bolt and preparation method and use method thereof |
| CN112211656A (en) * | 2020-10-16 | 2021-01-12 | 青岛理工大学 | Prestressed constant-resistance grouting anchor rod device and working method |
| CN112211656B (en) * | 2020-10-16 | 2022-06-21 | 青岛理工大学 | Prestressed constant-resistance grouting anchor rod device and working method |
| CN114840940A (en) * | 2022-05-12 | 2022-08-02 | 中国中煤能源股份有限公司 | Roadway anchor rod support design method in strong corrosion and impact environment |
| WO2023142654A1 (en) * | 2022-09-14 | 2023-08-03 | 中国矿业大学(北京) | Large-deformation and constant-resistance support grouting anchor cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104963710A (en) | Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof | |
| CN204783078U (en) | Cavity slip casting stock with constant -resistance of shocking resistance performance | |
| CN107130988B (en) | Liquid carbon dioxide blasting anti-reflection grouting composite anchor rod | |
| US10605078B2 (en) | Energy-absorbing rockbolt | |
| CN102286975A (en) | Constant-resistance energy-absorbing anchor rod for strengthening large-deformation rock body | |
| CN104033169A (en) | Impact-resistant constant-resistance anchor cable | |
| US4504375A (en) | Anode element for use in a cathodic protection system | |
| CN108662958A (en) | A kind of presplit blasting system for excavation of foundation pit | |
| CN2926509Y (en) | Roofbolt support | |
| CN203962011U (en) | A kind of rock bolt of segmentation anchoring | |
| CN105298526A (en) | Energy-absorption anchor rod for relieving danger of deeply-buried hydraulic tunnel surrounding rock burst and method | |
| CN103670466B (en) | A kind of constant-resistance deformer and using method thereof | |
| CN111733810A (en) | A awl section of thick bamboo supporting body and stock for stock | |
| CN205189913U (en) | A energy -absorbing stock that is used for burying deeply rock burst of hydraulic tunnel country rock and separates danger | |
| CN104061010A (en) | Rock anchor rod capable of conducting segmented anchoring | |
| CN112879057A (en) | Omnidirectional annular pressure negative expansion anchor rod device and enhanced anchoring method | |
| CN208380611U (en) | A kind of anchor pole being suitable for different surrounding rock condition | |
| CA2809129C (en) | Composite and self-centralizing soil nails and methods | |
| CN204140106U (en) | The meticulous explosion grouted anchor bar of a kind of controlling | |
| CA1064715A (en) | Method of securing a rock bolt | |
| CN108426494A (en) | A kind of presplit blasting blast hole projectile filling device for excavation of foundation pit | |
| CN204267057U (en) | A kind of nested type pipe seam anchor bar | |
| CN104831723A (en) | Blasting type anchor rod and mounting method thereof | |
| CN111733809A (en) | A toper supporting body and stock for stock | |
| CN210033493U (en) | Ejection device for preventing anchor cable from being broken |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |