CN104612150A - Novel anchor cable used for rocky slope treatment and inner anchor heads thereof - Google Patents
Novel anchor cable used for rocky slope treatment and inner anchor heads thereof Download PDFInfo
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- CN104612150A CN104612150A CN201510016382.1A CN201510016382A CN104612150A CN 104612150 A CN104612150 A CN 104612150A CN 201510016382 A CN201510016382 A CN 201510016382A CN 104612150 A CN104612150 A CN 104612150A
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- bolt head
- inner bolt
- anchor cable
- steel strand
- twisted wire
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- 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
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- 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
- E02D17/20—Securing of slopes or inclines
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a novel anchor cable used for rocky slope treatment and inner anchor heads of the novel anchor cable. The inner anchor head comprises an anchor head body and multiple strand holes penetrating through the anchor head body. The anchor head body is provided with a first end and a second end, the diameter is gradually decreased from the first end to the second end, in this way, the anchor head body is in a cone shape, and concave parts are formed at intervals in the periphery of the first end of the anchor head body. The inner anchoring section of the anchor cable comprises the multiple inner anchor heads, the inner anchor heads are arrayed in an end-to-end mode, the first ends of the inner anchor heads are away from a free section, and the second ends of the inner anchor heads are close to the free section. A steel strand is arranged in at least one of the strand holes in each inner anchor head in a penetrating mode, the steel strands extend to the free section and an outer anchoring section, and therefore all the inner anchor heads are connected in parallel through the steel strands. The tail ends of the steel strands inside the strand holes are exposed and provided with upset heads, and the upset heads are tightly attached to the first end side faces of the corresponding inner anchor heads. The inner anchor heads can evenly transfer loads, and can improve the safety and long-term effectiveness of slope anchoring.
Description
Technical field
The invention belongs to Geotechnical Engineering field, particularly a kind of New Anchor Cable for rock side slope improvement and Inner bolt head thereof.
Background technology
In geotechnical engineering is built, prestressed anchorage technology has become modal Rock And Soil reinforcement measure, and prestress anchorage cable can active enforcement Rock And Soil, effectively increases Rock Slide Stability safety factor, ensure engineering construction and the safety of runtime, it mainly contains following a few class:
1. the first generation has bonding unprotect prestress anchorage cable
This type anchor cable is still applied so far in the most engineering such as traffic, water conservancy and hydropower of China.As shown in Figure 1, this anchor cable system is made up of the solid section of grouted part 1 ', free segment 2 ' and outer anchor 3 '.Steel strand 4 ' the grease protection of free segment 2 ', and owing to adopting the antirust reliability of oil guard poor, free segment finally all can be shut by the mode of grouting by nearly all engineering.Thus, this type of anchor cable finally becomes bonding unprotect type anchor cable, and this anchor cable system also exists following defect:
(1) because anchor cable and grouted part are all wrapped up by backfilling mortar filling under naked state, once Cast-in-situ Piles in Sand-filling slurry cracking, under the etch of water, anchor cable is corrosion very easily;
(2) for preventing corrosion, the free segment mortar of anchor cable, all after construction terminates, is filled by nearly all engineering.Like this, anchor cable with rock mass deformation, cannot lose the ability freely adjusted, and reduces the effect to slope reinforcement;
(3) this type of anchor cable is because of needs formation pretensioned Inner bolt head, therefore is difficult to arrange Inner bolt head in the boring of upwards beating.Meanwhile, because Inner bolt head is formed under passive state, be difficult to ensure that slip casting is closely knit.According to investigation, the quality of the anchor cable Inner bolt head of 10% is about had more or less to there is slip casting leakiness problem.
2. second generation soap-free emulsion polymeization double shielding anchor cable
As shown in Figure 2, second generation anchor cable adopts polyvinyl chloride sleeve pipe 5 ' the protection steel strand 4 ' filling anti-corrosive grease, only each steel strand of grouted part 1 ' is removed polyvinyl chloride sleeve pipe, meanwhile, and grouted part 1 ' and free segment 2 ' once grouting.This type of anchor cable compensate for the shortcoming of first generation anchor cable, and the steel strand of free segment can move freely in sleeve pipe, makes whole anchor cable system along with rock mass deformation, can reach the object of hypogene geologic action, stamps that uphole is also corresponding with the closely knit problem of slip casting to achieve a solution.In recent years, China's hydropower system employs the steel strand through protection gradually, as the engineering such as voe, Zi Ping-pu.But the grouted part of this kind of anchor cable system can only appoint steel strand exposed, directly contacts with mortar, also reduces application life.
3. soap-free emulsion polymeization Prestressed anchor rope with pressure dispersing
Research shows, will produce stress concentrate during the grouted part tension of traditional anchor cable at a certain section, and what the steel strand of grouted part produced when outwards extracting simultaneously cut swollen this place's mortar consolidation section that likely causes ftractures.Therefore, as shown in Figure 3, the grouted part 1 ' of soap-free emulsion polymeization Prestressed anchor rope with pressure dispersing has the Inner bolt head 6 ' of multiple parallel connection, can improve the stress of grouted part 1 ', improve the reliability of grouted part 1 ', thus be that the length reducing grouted part creates conditions.This New Anchor Cable, except possessing all advantages of anchor cable in the past, also add following important feature:
(1) anchor cable Inner bolt head uniform force, there is high anti-pulling overload capacity, multiple Inner bolt head of anchor cable are distributed in grouted part by principle in parallel, not only can substantially increase the reliability of anchor cable system, and can anchoring depth be shortened, compared with traditional anchor cable system, remarkable in economical benefits;
(2) adopt disposable slip casting backfilling process, by grouting under pressure improvement boring surrounding rock body, and guarantee that Inner bolt head slip casting is closely knit, the anchor cable of facing upward with vertically upward can be installed.
Obviously, this kind of anchor cable system will improve safety and the long-term effectiveness of slope anchorage effectively, for China's geotechnical engineering prestressed anchorage technology progress plays a significant role.
As shown in Figure 3, at present, prestress anchorage cable type conventional in geotechnical engineering is soap-free emulsion polymeization Prestressed anchor rope with pressure dispersing, this anchor cable has binding type anchor cable relative to the first generation, and the PVC plastic gum cover 5 ' due to steel strand 4 ' overcoat, can meet the requirement of prestressing force corrosion-resistant well, in addition due to its overcoat PVC plastic gum cover, in engineering operation process, rock mass deformation can be adapted to and carry out prestressing force adjustment, ensure the mutual coordination of rock mass deformation and anchor cable stress.But they are many compared with a second generation non-bonded anchorage cable important structural member---Inner bolt head 6 ' and 7 ', it is mainly used to the prestressing force in anchor cable to be transferred in rock mass by the body in anchor hole.But existing soap-free emulsion polymeization Prestressed anchor rope with pressure dispersing Inner bolt head 6 ' and 7 ' design on, the flat board that mainly employing one piece is thicker carries out prestressed load transmission, because this block load transmission platen area is very little, and the prestressing force be added in flat board is very large, dull and stereotyped lower cement mortar of pouring into will be damaged by pressure, affects the reliability of the side slope after prestressed anchor reinforcement at engineering operation period.Under larger earthquake or rainfall operating mode, may slope instability be there is, cause the important geological disasters such as side slope avalanche, slippage.
Summary of the invention
The object of this invention is to provide a kind of Inner bolt head of the New Anchor Cable for rock side slope improvement, it is reasonable in design, and structural strength is large, evenly can transmit load.
Another object of the present invention is to provide a kind of New Anchor Cable administered for rock side slope, and it can improve safety and the long-term effectiveness of slope anchorage effectively.
For achieving the above object, the present invention takes following technical scheme:
For an Inner bolt head for the New Anchor Cable that rock side slope is administered, it comprises body and runs through the some twisted wire holes being located at this body; These body two ends are respectively first end and the second end, and this first end to successively decrease and conically, this body first end periphery is interval with recess to the second end diameter.
Described first end side convex is provided with connecting portion, and it is inner that described twisted wire hole is positioned at this connecting portion; This connecting portion connects a cover body, and described twisted wire hole is sealed in this connecting portion by this cover body.
Described second end side surface convex is provided with support portion, and described twisted wire hole is positioned at this support portion outer rim.
For the New Anchor Cable that rock side slope is administered, it comprises the grouted part, free segment and the outer anchoring section that are connected successively by steel strand; These steel strand are arranged with the sleeve pipe of filling anti-corrosive grease, and described grouted part comprises some Inner bolt head; This Inner bolt head comprises body and runs through the some twisted wire holes being located at this body; These body two ends are respectively first end and the second end, and this first end to successively decrease and conically, this body first end periphery is interval with recess to the second end diameter; The end to end arrangement of this some Inner bolt head, and respectively the first end of this Inner bolt head away from this free segment the second end near this free segment;
Have at least one to be equipped with this steel strand in the twisted wire hole of each this Inner bolt head, these steel strand extend to this free segment and outer anchoring section, make to be respectively parallel relationship by steel strand between this Inner bolt head; The end being located at the steel strand in each this twisted wire hole is not provided with this sleeve pipe and is provided with heading, and respectively this heading is close to the first end side of corresponding each Inner bolt head.
The first end side convex of described Inner bolt head is provided with connecting portion, and it is inner that described twisted wire hole is positioned at this connecting portion; Described connecting portion connects a protective cover, and the steel strand end seal through described twisted wire hole encloses in the cavity of structure at this connecting portion and this protective cover by this protective cover.
Apart from the connecting portion of described free segment Inner bolt head farthest protective cover conically.
Second end side surface convex of described each Inner bolt head is provided with support portion, and described twisted wire hole is positioned at this support portion outer rim.
Described each twisted wire hole is equipped with described steel strand, and the steel strand away from the Inner bolt head of described free segment pass the recess of the Inner bolt head near described free segment.
Steel strand between second end of described each Inner bolt head and adjacent Inner bolt head first end are all connected to a centering rack, and this centering rack is in the form of annular discs, and periphery is interval with some breach, and it is inner that this breach is located at by described steel strand.
Described each twisted wire hole is arranged as circle, and described connecting portion and support portion are also circular.
The invention has the beneficial effects as follows: the invention solves the pressure break problem of existing Inner bolt head to injecting cement paste, improve anchor cable long-term reliability.Inner bolt head of the present invention, rational in infrastructure, the pressure break effect of prestressed load to body can be changed, more directly effectively prestressed load is delivered in rock mass, easier formation in rock mass ensures Rock Slide Stability point counter-force arch, ensures stable in engineering construction and operation phase of Bolted Rock Masses.This invention can be converted into actual product quickly, in geotechnical engineering, carry out utilization and extention, has important economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation that the existing first generation has bonding unprotect prestress anchorage cable.
Fig. 2 is the structural representation of existing second generation soap-free emulsion polymeization double shielding anchor cable.
Fig. 3 is the structural representation of existing soap-free emulsion polymeization Prestressed anchor rope with pressure dispersing.
Fig. 4 is the structural representation of Inner bolt head of the present invention.
Fig. 5 is the right view of Inner bolt head of the present invention.
Fig. 6 is the left view of Inner bolt head of the present invention.
Fig. 7 is the sectional view in A-A direction in Fig. 5.
Fig. 8 is the structural representation of the New Anchor Cable that the present invention administers for rock side slope.
Fig. 9 is the enlarged diagram at B place in Fig. 8.
Figure 10 is the structural representation of the centering rack of the New Anchor Cable that the present invention administers for rock side slope.
Figure 11 is the assembling drawing of the New Anchor Cable that the present invention administers for rock side slope.
Figure 12 is the force analysis figure of the Inner bolt head of the New Anchor Cable that the present invention administers for rock side slope.
Detailed description of the invention
Below coordinate accompanying drawing to be further detailed the present invention, but and be not used to limit practical range of the present invention.
As Figure 4-Figure 7, first the present invention provides a kind of Inner bolt head 1 of the New Anchor Cable for rock side slope improvement, and it comprises body 11 and runs through the some twisted wire holes 12 being located at this body 11, wears for steel strand.These body 11 two ends are respectively first end 111 and the second end 112, and this first end 111 to successively decrease and conically, this body 11 first end 111 periphery is interval with recess 13 to the second end 112 diameter.Further, this first end 111 side convex is provided with connecting portion 14, and it is inner that this twisted wire hole 12 is positioned at this connecting portion 14.This connecting portion 14 for connect one there is guide effect or protective effect or two kinds act on the cover body 2 had, such as, by screw thread, or by other existing connected modes, this twisted wire hole 12 is sealed in this connecting portion 14 by this cover body 2.In addition, this second end 112 side can be provided with support portion 15 by convex, and this twisted wire hole 12 is positioned at this support portion 15 outer rim, and like this when wearing steel strand in twisted wire hole 12, the effect supporting and separate each steel strand is played in this support portion 15.
As illustrated in figs. 8-9, the present invention separately provides a kind of New Anchor Cable administered for rock side slope, and it comprises the grouted part 4, free segment 5 and the outer anchoring section 6 that are connected successively by steel strand 3.These steel strand 3 are arranged with the sleeve pipe 7 of filling anti-corrosive grease, such as pvc pipe, and make it after filling mortar, internal steel twisted wire can move freely.The division of grouted part 4, free segment 5 and outer anchoring section 6 be connected same as the prior art, therefore not repeat them here.Unlike the prior art, grouted part 4 of the present invention comprises some Inner bolt head 1, this Inner bolt head is above-mentioned Inner bolt head 1 provided by the invention, the end to end arrangement of these Inner bolt head, and respectively the first end 111 of this Inner bolt head 1 away from this free segment 5 second end 112 near this free segment 5.
Have at least one to be equipped with this steel strand 3 in the twisted wire hole 12 of each this Inner bolt head 1, these steel strand 3 extend to the outside along domatic anchor hole of drilling, and form this free segment 5 and outer anchoring section 6 successively.Be respectively parallel relationship by steel strand between this Inner bolt head, the end being located at the steel strand 3 in each this twisted wire hole 12 does not set this sleeve pipe and as exposed steel strand, exposed steel strand are provided with heading 31, and respectively this heading 31 is close to first end 111 side of corresponding each Inner bolt head 1.
Accordingly, respectively the first end 111 side convex of this Inner bolt head 1 is provided with connecting portion 14, and it is inner that this twisted wire hole 12 is positioned at this connecting portion 14.This connecting portion 14 connects a cover body 2, and steel strand 3 end seal through this twisted wire hole 12 encloses in the cavity of structure at this connecting portion 14 with this cover body 2 by this cover body 2, and the steel strand exposed to inside are protected.Be wherein conical apart from the cover body of the connecting portion of this free segment Inner bolt head farthest, thus there is protection and guiding double action.
Second end 112 side convex of this each Inner bolt head 1 is provided with support portion 15, and this twisted wire hole 12 is positioned at this support portion 15 outer rim, to be supported and separate by this support portion 15 to each steel strand.
Preferably, each twisted wire hole 12 of each Inner bolt head 1 is equipped with leads to outside steel strand 3, and the steel strand away from the Inner bolt head of this free segment 5 pass the recess 13 of the Inner bolt head near this free segment 5, form good location.In addition, this recess 13 can also pass through inlet pipe, for grouting under pressure.
Intersect to prevent the steel strand of same Inner bolt head, steel strand 3 between second end 112 of each Inner bolt head and adjacent Inner bolt head first end 111 are all connected to a centering rack 8, as shown in Figure 10, this centering rack 8 is in the form of annular discs, periphery is interval with some breach 81, and it is inner that this breach 81 is located at by these steel strand 3.
Preferably, this each twisted wire hole 12 is arranged as circle, and this connecting portion 14 and support portion 15 are also circular.
New Anchor Cable of the present invention is the same with common soap-free emulsion polymeization pressure pre-stressed anchoring cable when mounted; there is no special place; as shown in figure 11; steel strand 3 are passed by twisted wire hole 12; and at first end 111 side place fashion of extrusion, the heading 31 on steel strand 3 is fixed; install at the connecting portion 14 of first end 111 and have protection steel strand heading not by corrosion and have a guide housing 2 of guide effect, then conveniently pressure pre-stressed anchoring cable work progress is carried out and is compiled rope under rope, installation, anchor hole, slip casting and each operation of stretch-draw.
The New Anchor Cable of the present invention difference main from common soap-free emulsion polymeization pressure pre-stressed anchoring cable is that the structure of Inner bolt head is different, and main difference is mainly reflected in Inner bolt head load transfer mechanism.As shown in figure 12, Inner bolt head 1 structure of the present invention is substantially a cone table, like this by steel strand effect, prestressed load F suffered on Inner bolt head 1, F1 ' and F2 ' two parts are resolved into, wherein: in the AA ' plane that in conventional Inner bolt head anchor cable, prestressed load Main Function is shown in the figure, AA ' area is very little, therefore, may by cement mortar body pressure break under larger prestressed load effect.And in Inner bolt head of the present invention, F1 ' acts on the external surface of frustum, F2 ' acts on BB ' face, and such load transmission area increases greatly, and the stress acted on like this on the cement mortar body that pours in anchor hole is less, ensure that the integrality of cement mortar body.Therefore, prestressed load comparatively in rock mass, can ensure that prestress anchorage cable can reliably run by Transmit evenly.
Patent of the present invention, mainly optimize the force structure of soap-free emulsion polymeization compressibilty anchor cable Inner bolt head, make the dull and stereotyped force structure of Inner bolt head the force structure of wedge shape into, prestressed load transmission area in anchor cable is made to increase several times, and directly prestressing force is comparatively delivered evenly in rock mass, reduce the situation of damaging cement injection body by pressure, thus improve the global reliability of anchored slope, ensure engineering construction and security of operation.
The prestress anchorage cable Inner bolt head that the present invention develops, will improve the reliability of prestress anchoraging to a great extent, effectively promotes the research and development of prestressed anchorage technology and equipment aspect.The equipment promotion application of invention, will produce good economic and social profit.Utilize Inner bolt head of the present invention to carry out field trial at certain construction of hydro project scene, the ultimate bearing capacity that site test results shows Inner bolt head of the present invention improves greatly, and prestress anchorage cable Practical Project operational reliability obtains guarantee.
It is pointed out that above-mentioned embodiment is only possible embodiment, in order to be expressly understood that principle of the present invention proposes.Many changes and amendment can be carried out to the embodiment of the invention described above when not deviating from the principle of the invention and scope.All such modifications and change are all included in the scope of the present invention's announcement, and are subject to the protection of claims.
Claims (10)
1., for an Inner bolt head for the New Anchor Cable of rock side slope improvement, it is characterized in that, it comprises body and runs through the some twisted wire holes being located at this body; These body two ends are respectively first end and the second end, and this first end to successively decrease and conically, this body first end periphery is interval with recess to the second end diameter.
2. the Inner bolt head of the New Anchor Cable for rock side slope improvement according to claim 1, it is characterized in that: described first end side convex is provided with connecting portion, it is inner that described twisted wire hole is positioned at this connecting portion; This connecting portion connects a cover body, and described twisted wire hole is sealed in this connecting portion by this cover body.
3. the Inner bolt head of the New Anchor Cable for rock side slope improvement according to claim 1 and 2, is characterized in that: described second end side surface convex is provided with support portion, and described twisted wire hole is positioned at this support portion outer rim.
4., for the New Anchor Cable that rock side slope is administered, it comprises the grouted part, free segment and the outer anchoring section that are connected successively by steel strand; These steel strand are arranged with the sleeve pipe of filling anti-corrosive grease, it is characterized in that: described grouted part comprises some Inner bolt head; This Inner bolt head comprises body and runs through the some twisted wire holes being located at this body; These body two ends are respectively first end and the second end, and this first end to successively decrease and conically, this body first end periphery is interval with recess to the second end diameter; The end to end arrangement of this some Inner bolt head, and respectively the first end of this Inner bolt head away from this free segment the second end near this free segment;
Have at least one to be equipped with this steel strand in the twisted wire hole of each this Inner bolt head, these steel strand extend to this free segment and outer anchoring section, make to be respectively parallel relationship by steel strand between this Inner bolt head; The end being located at the steel strand in each this twisted wire hole is not provided with this sleeve pipe and is provided with heading, and respectively this heading is close to the first end side of corresponding each Inner bolt head.
5. the New Anchor Cable administered for rock side slope according to claim 4, is characterized in that: the first end side convex of described Inner bolt head is provided with connecting portion, and it is inner that described twisted wire hole is positioned at this connecting portion; Described connecting portion connects a protective cover, and the steel strand end seal through described twisted wire hole encloses in the cavity of structure at this connecting portion and this protective cover by this protective cover.
6. according to claim 5 for rock side slope administer New Anchor Cable, it is characterized in that: apart from the connecting portion of described free segment Inner bolt head farthest protective cover conically.
7. the New Anchor Cable administered for rock side slope according to claim 5 or 6, is characterized in that: the second end side surface convex of described each Inner bolt head is provided with support portion, and described twisted wire hole is positioned at this support portion outer rim.
8. the New Anchor Cable administered for rock side slope according to claim 7, is characterized in that: described each twisted wire hole is equipped with described steel strand, and the steel strand away from the Inner bolt head of described free segment pass the recess of the Inner bolt head near described free segment.
9. the New Anchor Cable administered for rock side slope according to claim 8, it is characterized in that: the steel strand between the second end of described each Inner bolt head and adjacent Inner bolt head first end are all connected to a centering rack, this centering rack is in the form of annular discs, periphery is interval with some breach, and it is inner that this breach is located at by described steel strand.
10. the New Anchor Cable administered for rock side slope according to claim 9, is characterized in that: described each twisted wire hole is arranged as circle, and described connecting portion and support portion are also circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016382.1A CN104612150B (en) | 2015-01-13 | 2015-01-13 | A kind of anchor cable and its Inner bolt head administered for rock side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016382.1A CN104612150B (en) | 2015-01-13 | 2015-01-13 | A kind of anchor cable and its Inner bolt head administered for rock side slope |
Publications (2)
| Publication Number | Publication Date |
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| CN104612150A true CN104612150A (en) | 2015-05-13 |
| CN104612150B CN104612150B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510016382.1A Active CN104612150B (en) | 2015-01-13 | 2015-01-13 | A kind of anchor cable and its Inner bolt head administered for rock side slope |
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| CN (1) | CN104612150B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988311A (en) * | 2017-04-21 | 2017-07-28 | 中国水利水电科学研究院 | A kind of stress peak clipping formula anchor cable reinforced suitable for large-sized rock mass structural plane |
| CN108894236A (en) * | 2018-07-31 | 2018-11-27 | 中国水利水电科学研究院 | Pressure-expandable wedge shape Inner bolt head |
| CN109868816A (en) * | 2019-01-25 | 2019-06-11 | 中国水利水电科学研究院 | Stress and the adjustable non-bonding prestress tendon Inner bolt head of deformation |
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| CN2716341Y (en) * | 2004-02-20 | 2005-08-10 | 中国水利水电科学研究院 | Compression dispersion type prestressed anchor end in anchor cable |
| CN1651660A (en) * | 2005-03-28 | 2005-08-10 | 李炳奇 | Permanent anchor rope used for side slope stabilization |
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| CN201334663Y (en) * | 2008-12-31 | 2009-10-28 | 中铁西北科学研究院有限公司深圳南方分院 | Self-locker and self-locking prestressed anchor rope provided with same |
| CN201649081U (en) * | 2009-11-11 | 2010-11-24 | 中国水利水电科学研究院 | Novel pressure-dispersed anchoring device |
| CN204456098U (en) * | 2015-01-13 | 2015-07-08 | 中国水利水电科学研究院 | A kind of New Anchor Cable for rock side slope improvement and Inner bolt head thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2716341Y (en) * | 2004-02-20 | 2005-08-10 | 中国水利水电科学研究院 | Compression dispersion type prestressed anchor end in anchor cable |
| CN1651660A (en) * | 2005-03-28 | 2005-08-10 | 李炳奇 | Permanent anchor rope used for side slope stabilization |
| KR100783728B1 (en) * | 2007-01-30 | 2007-12-07 | 주식회사 스마텍엔지니어링 | Anchor deivce |
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| CN204456098U (en) * | 2015-01-13 | 2015-07-08 | 中国水利水电科学研究院 | A kind of New Anchor Cable for rock side slope improvement and Inner bolt head thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988311A (en) * | 2017-04-21 | 2017-07-28 | 中国水利水电科学研究院 | A kind of stress peak clipping formula anchor cable reinforced suitable for large-sized rock mass structural plane |
| CN108894236A (en) * | 2018-07-31 | 2018-11-27 | 中国水利水电科学研究院 | Pressure-expandable wedge shape Inner bolt head |
| CN109868816A (en) * | 2019-01-25 | 2019-06-11 | 中国水利水电科学研究院 | Stress and the adjustable non-bonding prestress tendon Inner bolt head of deformation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104612150B (en) | 2017-08-25 |
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