CN108203984A - A kind of Dangerous Rock Body bolting with wire mesh method - Google Patents
A kind of Dangerous Rock Body bolting with wire mesh method Download PDFInfo
- Publication number
- CN108203984A CN108203984A CN201711486929.XA CN201711486929A CN108203984A CN 108203984 A CN108203984 A CN 108203984A CN 201711486929 A CN201711486929 A CN 201711486929A CN 108203984 A CN108203984 A CN 108203984A
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- Prior art keywords
- rock body
- dangerous rock
- anchor cable
- drilling
- anchor
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- 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.)
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- 239000011435 rock Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 101100013961 Schizosaccharomyces pombe (strain 972 / ATCC 24843) gar2 gene Proteins 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of Dangerous Rock Body bolting with wire mesh methods, it includes the following steps：Step (1), according to design drawing discharge hole on side slope Dangerous Rock Body, the drilling the step of；The drilling includes anchor cable drilling and armature boring；Step (2) places in anchor cable drilling and anchors anchor cable, and simultaneously anchoring rod is placed in the armature boring；Step (3), the tensioning protection network on Dangerous Rock Body the step of, the protection network includes supporting rope and the dictyosome being connected on supporting rope, and supporting rope is fixed on by anchor pole and anchor cable on Dangerous Rock Body.The present invention can be suitable for the supporting of large-scale Dangerous Rock Body using anchor cable, anchor pole and anchor cable and the rigid combining anchor support pattern of active network joint and flexibility.
Description
Technical field
The present invention relates to rock side slope engineering field more particularly to a kind of bolting with wire mesh methods, it is suitable for surface mining
Reinforcing and improvement of side slope or water conservancy and hydropower side slope etc..
Background technology
With the construction of surface mining engineering and hydraulic and hydroelectric engineering, there is a large amount of high precipitous rock slope.Side slope
Excavating off-load causes original structure face further to penetrate through extension, and multigroup structural plane Cutting Rock forms the poor crag of stability
Body.Under the action of exogenic force, Dangerous Rock Body easily detaches avalanche with parent, and side slope is higher, and the threat of Dangerous Rock Body is bigger, therefore for
The reinforcing and improvement of side slope Dangerous Rock Body are very necessary.
It is most direct effective governing measure that Dangerous Rock Body, which is carried out excavating cleaning, but some Dangerous Rock Bodies are due to present position
Or itself size, cause to be not easily cleaned or cleaning side's amount is big, and then various passive protection technologies and active control technique occurs.
Rock-fill concrete and passive protection web frame described in patent No. CN106498903A solve side slope Dangerous Rock Body to engineering safety
Adverse effect, but for high gradient slope, the potential energy of Dangerous Rock Body is too high, and avalanche fall damage power is too big, the energy of passive protection
Power is limited, is not effective method；Internal crack drawknot described in the patent No. CN102660959A and CN102677685A
Method and appearance crack drawknot method reinforce Dangerous Rock Body, easy for construction, economical and effective, but the drawknot method reinforces model
It is with limit, it is difficult to suitable for large-scale Dangerous Rock Body；Anchor Care combination processing structure described in patent No. CN204676569U also can only
It is reinforced suitable for larger Dangerous Rock Body, and used GPS type Double-protection net is fixedly welded on anchor pole, construction technology is multiple
Miscellaneous, construction cost is higher.Therefore, it is necessary to invent a kind of rock side slope large size Dangerous Rock Body bolting with wire mesh method.
Invention content
The technical problems to be solved by the invention are：A kind of Dangerous Rock Body bolting with wire mesh method is provided, it has construction party
Just, low-cost, good integrity, reinforcing scope are big and the advantages that resistance to capsizing is strong, are a kind of to be suitable for large-scale Dangerous Rock Body and add
Solid active Support Method.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of Dangerous Rock Body bolting with wire mesh method, it includes the following steps：
Step (1), according to design drawing discharge hole on side slope Dangerous Rock Body, the drilling the step of；The drilling includes anchor cable brill
Hole and armature boring；
Step (2) places in anchor cable drilling and anchors anchor cable, placed in the armature boring and anchor anchor
Bar；
Step (3), the tensioning protection network on Dangerous Rock Body the step of, the protection network includes supporting rope and is connected to supporting rope
On dictyosome, supporting rope is fixed on by anchor pole and anchor cable on Dangerous Rock Body.
In said program, the anchoring section of the anchor cable drilling is in the parent basement rock of Dangerous Rock Body.
In said program, the anchor cable drilling and the angle of horizontal plane are 13-17 °.
In said program, the anchoring section of the anchor cable drilling is 5-7m.
In said program, placed in the drilling and anchor anchor cable and anchor pole after, two are carried out to drilling to slip casting three times；
The ratio of mud of slip casting is 0.4-0.5, and cement grade is not less than M30.
The prior art is just for middle-size and small-size or relatively large Dangerous Rock Body, using single active network protection or suspension roof support
Or the combined supporting of active network and anchor pole, but supporting depth is shallower, reinforces Dangerous Rock Body small volume, anchoring bearing capacity is limited
(Technique Code for Building Slope Engineering GB50330-2013) is pointed out：Common regular screw threads reinforced anchor bolt supporting length is not more than
16m, single anchor rod bearing capacity are no more than 300kN).The method of the present invention has easy for construction, low-cost, good integrity spy
Point can solve the support technology problem of Dangerous Rock Body, mainly solve the large-scale Dangerous Rock Body branch of tens thousand of sides or even hundreds of thousands cube product
Technical barrier is protected, by the dual supporting of anchor cable and active network, the anchor force demand (building slope of large-scale Dangerous Rock Body can be met
Engineering legislation GB50330-2013) it points out：Common non-bending steel cable supporting length is more than 10m, single anchor cable carrying
Power can reach 300kN-3000kN), while Spray turfing can be with greening environment, cosmetic treatment.
Compared with prior art, the present invention haing the following advantages and effect：
(1) present invention is using anchor cable, anchor pole and active network Support Method, and Dangerous Rock Body is by internal anchor cable, anchor pole, outside
Portion's protection network protection, adequately protected Dangerous Rock Body in terms of stability and safety two.Anchor cable, anchor pole have Dangerous Rock Body larger
Anchoring ability, reinforcing scope is big, and reinforcement ability is high, can be suitable for the supporting of large-scale Dangerous Rock Body.Active protecting net, price is just
Preferably, it is easy for construction.
(2) using flexible anchor cable and rigid combining anchor supporting, provide the anchor force of large-scale Dangerous Rock Body needs the present invention
It asks.Whole Dangerous Rock Body can effectively limit it under the active role of anchor cable tensile stress and slide and topple over, and significantly improve its drag
And rigidity；Coupling is cut in the drawing that local Dangerous Rock Body can give full play to anchor pole under the conditions of small deformation, Dangerous Rock Body is played firm
Property pin mechanism, further constrain Dangerous Rock Body deformation, increase the slip of Dangerous Rock Body and topple over drag, pass through the hard and soft connection gone forward side by side
Supporting is closed, the anchoring drag of large-scale Dangerous Rock Body can be significantly improved, effectively limits and constrain the displacement deformation of Dangerous Rock Body.
(3) of the invention anchor cable, anchor pole and active network Support Method can share drilling on Dangerous Rock Body, easy for construction,
It is time saving and energy saving, it can promote and apply.
Description of the drawings
Fig. 1 is the method for the present invention embodiment flow chart.
Fig. 2 is the structure diagram by the method for the present invention supporting Dangerous Rock Body.
Fig. 3 is the sectional view by the method for the present invention supporting Dangerous Rock Body.
Wherein：1- Dangerous Rock Bodies, 2- anchor cables, 3- protection networks, 4- weak structural faces, 5- anchor poles, 6- supporting ropes, 7- anchors
Gu section, 8- parent basement rock.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
The embodiment of the present invention according to figure 1, it is suitable for large-scale Dangerous Rock Body bolting with wire mesh, it includes the following steps：
Surface dust and float stone in step (1), Slope Unstable Rock 1 in crag body region are purged, according to design drawing
Discharge hole on side slope Dangerous Rock Body, the drilling the step of；The drilling includes anchor cable drilling and armature boring.
According to the drilling of the transverse and longitudinal spacing 3-5m setting-outs anchor cable of design and armature boring on Dangerous Rock Body, pass through down-the-hole drill
Put a position be drilled to diameter needed for anchor cable and anchor pole hole position.By design length and diameter bores and borehole cleaning, the design length of anchor cable 2
20m or so, 7 length 5-7m of anchoring section of anchor cable or so are spent, anchoring section 7 needs guiding through weak structural face 4 and enters parent basement rock 8, hole
Deeply should 50cm longer than design length or so, aperture 130mm or so has a down dip 13-17 °；5 design length 3m of anchor pole or so, hole depth should
Longer more than 5cm than design length, 20cm is hereinafter, aperture has a down dip 15 ° or so not less than 45mm or so.
Step (2) places in anchor cable drilling and anchors anchor cable, placed in the armature boring and anchor anchor
Bar；
It makes and places anchor cable 2 and anchor pole 5, anchor cable 2 is using the steel strand manufacturing of 3-5 beam diameters 15.2mm, anchor pole use
The screw-thread steel of single diameter 25mm or so.The grout injection into anchor cable drilling and armature boring.Two are used to anchor cable and anchor pole
To slip casting three times, until slurry is returned in aperture.Cement grade is not less than M30, and cement mortar uses P.O42.5 Portland cements, water
Gray scale is 0.4-0.5, and label is not less than M30.
Step (3), the tensioning protection network on Dangerous Rock Body the step of, the protection network includes supporting rope and is connected to supporting rope
On dictyosome, supporting rope is fixed on by anchor pole and part anchor cable on Dangerous Rock Body.
Protection network 3 uses GAR2 type protection networks, by the 30cm of diameter 8mm or so steel wire rope braiding or so rhombic grid structure
Into grid fixes extravagance on the transverse and longitudinal supporting rope 6 of diameter 16mm or so by iron wire, and supporting rope 6 is fixed by restricting due to anchor
On bar 5 and part anchor cable 2.
By abovementioned technology, solve the support technology problem of side slope Dangerous Rock Body, mainly solve tens thousand of sides or even
The large-scale Dangerous Rock Body support technology problem of hundreds of thousands cube product, by the dual supporting of anchor cable and active network, can meet large size
The anchorage depth of Dangerous Rock Body and anchoring bearing capacity demand, while Spray turfing can be with greening environment, cosmetic treatment.
The embodiment of the present invention is large-scale Dangerous Rock Body bolting with wire mesh method, have easy for construction, low-cost, good integrity,
Reinforcing scope is big and the advantages that resistance to capsizing is strong, is a kind of active Support Method for being suitable for large-scale Dangerous Rock Body and reinforcing.
Detailed description has been done to the present invention above in association with accompanying drawings and embodiments, but has not formed the limit to the present invention
System, all fall the modifications and variations in the claims in the present invention protection domain, all fall within the scope and spirit of the invention.
Claims (5)
- A kind of 1. Dangerous Rock Body bolting with wire mesh method, it is characterised in that：It includes the following steps：Step (1), according to design drawing discharge hole on side slope Dangerous Rock Body, the drilling the step of；It is described drilling include anchor cable drilling with Armature boring；Step (2) places in anchor cable drilling and anchors anchor cable, and simultaneously anchoring rod is placed in the armature boring；Step (3), the tensioning protection network on Dangerous Rock Body the step of, the protection network includes supporting rope and is connected on supporting rope Dictyosome, supporting rope are fixed on by anchor pole and anchor cable on Dangerous Rock Body.
- 2. bolting with wire mesh method according to claim 1, it is characterised in that：The anchoring section of the anchor cable drilling is in Dangerous Rock Body Parent basement rock in.
- 3. bolting with wire mesh method according to claim 2, it is characterised in that：The anchor cable drilling and the angle of horizontal plane are 13-17°。
- 4. bolting with wire mesh method according to claim 2, it is characterised in that：The anchoring section of the anchor cable drilling is 5-7m.
- 5. bolting with wire mesh method according to claim 1, it is characterised in that：Placed in the drilling and anchor anchor cable and After anchor pole, two are carried out to drilling to slip casting three times；The ratio of mud of slip casting is 0.4-0.5, and cement grade is not less than M30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486929.XA CN108203984A (en) | 2017-12-30 | 2017-12-30 | A kind of Dangerous Rock Body bolting with wire mesh method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486929.XA CN108203984A (en) | 2017-12-30 | 2017-12-30 | A kind of Dangerous Rock Body bolting with wire mesh method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108203984A true CN108203984A (en) | 2018-06-26 |
Family
ID=62605177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711486929.XA Pending CN108203984A (en) | 2017-12-30 | 2017-12-30 | A kind of Dangerous Rock Body bolting with wire mesh method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108203984A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709239A (en) * | 2020-12-29 | 2021-04-27 | 华能澜沧江水电股份有限公司 | Combined reinforcement construction method for rod net of cracked and loosened rock slope |
| CN112761170A (en) * | 2020-12-29 | 2021-05-07 | 山东省地质环境监测总站(山东省地质灾害防治技术指导中心) | Collapse prevention and control device suitable for side slope danger rock mass |
| CN114045844A (en) * | 2021-11-12 | 2022-02-15 | 贵州建工集团第一建筑工程有限责任公司 | Slope anchor rope construction bearing structure |
| CN114093135A (en) * | 2021-11-26 | 2022-02-25 | 中国电建集团成都勘测设计研究院有限公司 | Dangerous rock mass group instability early warning system |
| 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709239A (en) * | 2020-12-29 | 2021-04-27 | 华能澜沧江水电股份有限公司 | Combined reinforcement construction method for rod net of cracked and loosened rock slope |
| CN112761170A (en) * | 2020-12-29 | 2021-05-07 | 山东省地质环境监测总站(山东省地质灾害防治技术指导中心) | Collapse prevention and control device suitable for side slope danger rock mass |
| CN114045844A (en) * | 2021-11-12 | 2022-02-15 | 贵州建工集团第一建筑工程有限责任公司 | Slope anchor rope construction bearing structure |
| CN114093135A (en) * | 2021-11-26 | 2022-02-25 | 中国电建集团成都勘测设计研究院有限公司 | Dangerous rock mass group instability early warning system |
| 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: 20180626 |