CN104912005A - Fixing and traction device used for preventing critical rock from falling or rolling down - Google Patents
Fixing and traction device used for preventing critical rock from falling or rolling down Download PDFInfo
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- CN104912005A CN104912005A CN201510189697.6A CN201510189697A CN104912005A CN 104912005 A CN104912005 A CN 104912005A CN 201510189697 A CN201510189697 A CN 201510189697A CN 104912005 A CN104912005 A CN 104912005A
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- expansion
- steel strand
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- bolt
- fixing
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Abstract
The invention relates to a fixing and traction device used for preventing the critical rock from falling or rolling down. The device mainly comprises three expansion bolts, a steel strand and prestressed anchor heads. The expansion bolts are connected in a manner of being wound by the high strength steel strand to form a triangular fixing and traction system, and the joints are connected by the prestressed anchor heads. Each expansion bolt is mainly composed of a bolt, a hex nut, a spring washer, a large washer, an expansion loop and an expansion casing. When the critical rock at slopes is subjected to disturbance, the rock mass is restricted by the steel strand circle formed by connecting the prestressed anchor heads through the expansion bolts, thus force is transferred to the two expansion bolts in stable rock mass, and the triangular fixing and traction system is formed, so that the critical rock at the slopes is stabilized or does not roll down quickly. The fixing and traction device can be used for preventing the critical rock from falling or rolling down at a high speed more reliably and conveniently, and thus higher guarantees are provided for life and property safety of people.
Description
Technical field
The invention belongs to slope project technical field, especially relating to a kind of fixed traction device for preventing and treating falling rocks.
Background technology
In tunnelling or slope project, falling rocks is hurted sb.'s feelings or the accident that affects programming frequently has generation, produce to engineering safety and bring very big potential safety hazard, therefore, safeguard procedures need be set in crag region and occur to prevent all kinds of engineering accident caused due to falling rocks.The measure of current existing control falling rocks mainly gabion box, rock-fall protection net, rock-fall proof canopy, barricade adds and blocks stone grid, bellows grid, the wire gauze utilizing trees to arrange and wire lath covering etc., but the slump of zonule or this extremely indivedual Dangerous Rock Body is prevented and treated, above measure not only consumable quantity is large, cause unnecessary economic waste, and once protect improper, large-area falling rocks will be caused to drop or tumble, and safety need to improve.Therefore, even if how to guarantee that sillar drops, be also unlikely to threaten to people's life and property safety, be more and more subject to the great attention of vast construction, unit in charge of construction and government department.
Summary of the invention
Object of the present invention, exactly for overcoming the defect that above-mentioned prior art exists, provides a kind of fixed traction device that can be used for preventing and treating falling rocks.
Object of the present invention can be achieved through the following technical solutions:
A kind of fixed traction device for preventing and treating falling rocks, it is characterized in that, this device mainly comprises three expansion bolts, steel strand and prestressing force anchor head, and be wound around expansion bolt by high strength steel strand and be connected to form triangle fixed traction system, joint is connected by prestressing force anchor head.Described expansion bolt is formed primarily of bolt, hex nut, spring washer, large washer, expansion loop, expansion sleeve.When side slope crag is disturbed, rock mass is limited by the steel strand circle connected into by prestressing force anchor head by expansion bolt, according to the equilibrium principle of three power concurrents, crag rock mass is decomposed on the steel strand of both sides along the power of line of slope, power transmission is on the expansion bolt of two in rock mass stability thus, form triangle fixed traction system, thus make side slope crag stablize or be unlikely to tumble fast.
Described expansion bolt is embedded in crag respectively and closes on it in rock mass stability, is intertwined and connected by high strength steel strand in expansion bolt end, makes it to form triangle fixed traction system, and after expansion bolt is fixing, around it, glue is injected in gap.
Described steel strand are by the many stranded prestress steel ironworks formed of steel wire, and steel surface increases zinc coat, pull resistance and good endurance.Steel strand be wound around between the spring washer and large washer of expansion bolt two enclose more than, joint is connected by prestressing force anchor head, conscientiously ensures the stability of triangle fixed traction system.
Described prestressing force anchor head main component is stainless steel, and component part is mainly anchor cushion block, anchor slab, intermediate plate three part, and steel strand produce anchoring by Shi Hanzhang through intermediate plate center.
Described expansion bolt, steel strand, prestressing force anchor head are made by chromium plating stainless steel.
Compared with prior art, the present invention has the following advantages:
1, because expansion bolt is not anchor bar body, to bore cavity long without the need to large aperture, deep hole, therefore, this type of boring is very little to rock mass disturbance.
2, traction is fixed to local crag, avoids the wasting of resources that large area cover type protective screening brings;
3, fixed traction device simple structure, easy for installation;
4, adopt prestressing force triangle fixed traction system, guarantee the stable anchorage of crag.
Accompanying drawing explanation
Fig. 1 is the perspective diagram after control falling rocks fixed traction device of the present invention is installed;
Fig. 2 is the plan view from above after control falling rocks fixed traction device of the present invention is installed;
Fig. 3 is the detailed maps of control falling rocks fixed traction device expansion bolt of the present invention;
Fig. 4 is the detailed maps of control falling rocks fixed traction device prestressing force anchor head of the present invention.
In figure, 1 is expansion bolt, and 2 is steel strand, and 3 is prestressing force anchor head, and 4 is hex nut, and 5 is spring washer, and 6 is large washer, and 7 is expansion loop, and 8 is expansion sleeve, and 9 is bolt, and 10 is intermediate plate, and 11 is anchor slab, and 12 is anchor cushion block.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
For preventing and treating a fixed traction device for falling rocks, agent structure as shown in Figure 1, 2, 3.This device is formed primarily of expansion bolt 1, steel strand 2 and prestressing force anchor head 3.
When device is implemented, at Dangerous Rock Body surface drilling, aperture is greater than expansion bolt diameter slightly, and because expansion bolt 1 is not anchor bar body, long without the need to large aperture, deep hole, therefore, this type of boring is very little to rock mass disturbance.Expansion bolt 1 is placed in the hole accomplished fluently in advance, rock mass stability is settled two same expansion bolts 1, after having settled all expansion bolts, between the spring washer 5 and large washer 6 of expansion bolt, be wound around two enclose above steel strand, often being wound around an expansion bolt 1 tightens fixing by hex nut 4 at once, adopt in steel strand 2 joint prestressing force anchor head 3 by two joint anchorings, finally form stable triangular steel twisted wire circle.When Dangerous Rock Body is subject to large disturbance, the fixed traction system that triangular steel twisted wire circle is formed can fix crag to a great extent, be unlikely to cause large-scale Rolling Stone landing accident, therefore, compared with prior art, the present invention can be more reliable easily for preventing danger stone from falling or tumbling at a high speed, brings more sound assurance to people life property safety.
As shown in Figure 3, expansion bolt structure installation method: first bore a corresponding hole with Churn drill on rock mass, then in bolt, expansion sleeve load hole, reinstall parts, successively large washer, spring washer and steel strand are inserted in expansion bolt, hex nut screw-in are tightened and links into an integrated entity, expansion loop opens and fixing on bolt for resisting the excessive of expansion sleeve, thus make expansion bolt entirety be fastened in rock mass, reach and install and use object.
As shown in Figure 4, prestressed anchor head structure for anchor mounting method: using the joint of anchor cushion block as steel strand triangle system, anchor cushion block installs anchor slab, steel strand are passed the hole of anchor slab and anchor cushion block, and apply a part of prestressing force, two halves intermediate plate is inserted in anchor slab hole along steel strand respectively, discharges prestressed applying simultaneously, the anchoring of steel strand joint, the other end method of operating of steel strand is the same.
Claims (1)
1. one kind for preventing and treating the fixed traction device of falling rocks, it is characterized in that, this device mainly comprises three expansion bolts, steel strand and prestressing force anchor head, and be wound around expansion bolt by high strength steel strand and be connected to form triangle fixed traction system, joint is connected by prestressing force anchor head;
Described expansion bolt is formed primarily of bolt, hex nut, spring washer, large washer, expansion loop, expansion sleeve;
When side slope crag is disturbed, rock mass is limited by the steel strand circle connected into by prestressing force anchor head by expansion bolt, thus power transmission is to the expansion bolt of two in rock mass stability, form triangle fixed traction system, thus make side slope crag stablize or be unlikely to tumble fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189697.6A CN104912005A (en) | 2015-04-20 | 2015-04-20 | Fixing and traction device used for preventing critical rock from falling or rolling down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189697.6A CN104912005A (en) | 2015-04-20 | 2015-04-20 | Fixing and traction device used for preventing critical rock from falling or rolling down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104912005A true CN104912005A (en) | 2015-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189697.6A Pending CN104912005A (en) | 2015-04-20 | 2015-04-20 | Fixing and traction device used for preventing critical rock from falling or rolling down |
Country Status (1)
| Country | Link |
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| CN (1) | CN104912005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424284A (en) * | 2019-08-12 | 2019-11-08 | 四川轻化工大学 | A kind of mud-rock flow protection mechanism |
| CN115354671A (en) * | 2022-07-28 | 2022-11-18 | 四川省公路规划勘察设计研究院有限公司 | A anchor structure for in situ reinforcement dangerous rock |
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| JPH0988077A (en) * | 1995-07-13 | 1997-03-31 | Sango:Kk | Repair method of falling rock preventive concrete wall of slope |
| JPH11107224A (en) * | 1997-10-07 | 1999-04-20 | Nittoc Constr Co Ltd | Method of rock-mass collapse counterplan construction |
| JPH11280027A (en) * | 1998-03-31 | 1999-10-12 | Tokyo Seiko Co Ltd | Protection construction work with indicating device for danger such as falling of rock |
| JP2000292216A (en) * | 1999-04-02 | 2000-10-20 | Fujikura Ltd | Optical fiber sensor |
| JP2008202399A (en) * | 2008-04-02 | 2008-09-04 | Yoshida Kouzou Design:Kk | Falling stone prevention structure |
| CN101970761A (en) * | 2008-02-27 | 2011-02-09 | 奥菲奇内·马卡费里股份公司 | A structure for preventing rockfall, a rockfall prevention method, and a method for designing said structure |
| CN201908312U (en) * | 2010-11-22 | 2011-07-27 | 四川奥特机械设备有限公司 | Guiding type protection system |
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2015
- 2015-04-20 CN CN201510189697.6A patent/CN104912005A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988077A (en) * | 1995-07-13 | 1997-03-31 | Sango:Kk | Repair method of falling rock preventive concrete wall of slope |
| JPH11107224A (en) * | 1997-10-07 | 1999-04-20 | Nittoc Constr Co Ltd | Method of rock-mass collapse counterplan construction |
| JPH11280027A (en) * | 1998-03-31 | 1999-10-12 | Tokyo Seiko Co Ltd | Protection construction work with indicating device for danger such as falling of rock |
| JP2000292216A (en) * | 1999-04-02 | 2000-10-20 | Fujikura Ltd | Optical fiber sensor |
| CN101970761A (en) * | 2008-02-27 | 2011-02-09 | 奥菲奇内·马卡费里股份公司 | A structure for preventing rockfall, a rockfall prevention method, and a method for designing said structure |
| JP2008202399A (en) * | 2008-04-02 | 2008-09-04 | Yoshida Kouzou Design:Kk | Falling stone prevention structure |
| CN201908312U (en) * | 2010-11-22 | 2011-07-27 | 四川奥特机械设备有限公司 | Guiding type protection system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424284A (en) * | 2019-08-12 | 2019-11-08 | 四川轻化工大学 | A kind of mud-rock flow protection mechanism |
| CN110424284B (en) * | 2019-08-12 | 2021-05-11 | 四川轻化工大学 | Debris flow protection mechanism |
| CN115354671A (en) * | 2022-07-28 | 2022-11-18 | 四川省公路规划勘察设计研究院有限公司 | A anchor structure for in situ reinforcement dangerous rock |
| CN115354671B (en) * | 2022-07-28 | 2023-09-26 | 四川省公路规划勘察设计研究院有限公司 | Anchor-pulling structure for in-situ reinforcement of dangerous rock |
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Application publication date: 20150916 |
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| WD01 | Invention patent application deemed withdrawn after publication |