CN110242335A - The passive coupling supporting system of large deformation stope drift active workings master and construction method - Google Patents
The passive coupling supporting system of large deformation stope drift active workings master and construction method Download PDFInfo
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- CN110242335A CN110242335A CN201910443581.9A CN201910443581A CN110242335A CN 110242335 A CN110242335 A CN 110242335A CN 201910443581 A CN201910443581 A CN 201910443581A CN 110242335 A CN110242335 A CN 110242335A
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- 230000008878 coupling Effects 0.000 title claims abstract description 33
- 238000010168 coupling process Methods 0.000 title claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 33
- 230000003245 working effect Effects 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000011435 rock Substances 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 238000005065 mining Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000013036 cure process Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of passive coupling supporting systems of large deformation stope drift active workings master, including helping along back and two to supporting roadway surrounding rock and the mine I-beam bracket that matches with roadway surrounding rock inner surface, metal mesh is equipped between roadway surrounding rock and mining i beam, W steel band is laid on metal mesh inner surface, W steel band outer surface is equipped with high strength pallet, back and two anchor poles helped pass through pallet, W steel band and metal mesh from stope drift active workings inner surface and squeeze into roadway surrounding rock, and anchor pole stretches out roadway surrounding rock inner surface to be fixed using high strength pallet；Roadway's sides are equipped with joist, and roadway's sides anchor cable passes through joist, W steel band, metal mesh from the inner surface of stope drift active workings and squeezes into roadway surrounding rock, and anchor cable stretches out roadway surrounding rock inner surface to be fixed using joist；Anchor cable passes through pallet, W steel band and metal mesh from the inner surface of stope drift active workings and squeezes into roadway surrounding rock at the top of tunnel, and anchor cable stretches out roadway surrounding rock inner surface to be fixed using pallet.The present invention discloses the construction methods of the system.
Description
Technical field
The present invention relates to a kind of mine timbering technology, especially a kind of passive coupling supporting of large deformation stope drift active workings master
System and construction method.
Background technique
Surrounding rock of actual mining roadway large deformation problem is one of the major issue for perplexing safety of coal mines and efficiently producing, in production practices
In, good solution is had no for the feature of the large deformation of stope drift active workings, high stress and difficult supporting.Chinese patent
201811377228.7 disclose 3rd area of breaking surrounding rock tunnel collaboration coupling supporting system and its construction method, but the technology makes
It is that anchor pole carries out supporting, due to the limitation of rock-bolt length, the stope drift active workings wide for Plastic Zone Distribution range will be difficult to control
Roadway surrounding rock processed destroys；Chinese patent 2017111392527.2 discloses a kind of dynamic superposition coupling in fault belt tunnel
Method for protecting support and supporting construction, but only for drop compared with craven fault, the tomography big for drop is difficult to realize control country rock
Effect, wearing bottom phenomenon simultaneously for steel arch-shelf cannot effectively inhibit, and the present invention proposes to deform that stope drift active workings master passively couples branch
Prop and country rock are closely linked by protecting system and construction method, and stope of coal mines Drift stability is effectively ensured, and accelerate
Back production efficiency.
Summary of the invention
The purpose of the present invention is for overcome it is above-mentioned it is of the existing technology because caused by large deformation of roadway supporting construction lose
The problem of effect, fall of ground and landslide, provides a kind of passive coupling supporting system of large deformation stope drift active workings master and construction method.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of passive coupling supporting system of large deformation stope drift active workings master, including helped to supporting roadway surrounding rock simultaneously along back and two
The mine I-beam bracket to match with roadway surrounding rock inner surface, is provided with metal mesh between roadway surrounding rock and mining i beam,
W steel band is laid on metal mesh inner surface, W steel band outer surface is equipped with high strength pallet, back and two anchor poles helped from back production
The inner surface in tunnel passes through pallet, W steel band and metal mesh and squeezes into roadway surrounding rock, and anchor pole stretches out roadway surrounding rock inner surface using high
Intensity pallet is fixed；
Roadway's sides are equipped with joist, and roadway's sides anchor cable passes through joist, W steel band, metal mesh from the inner surface of stope drift active workings and squeezes into
In roadway surrounding rock, anchor cable stretches out roadway surrounding rock inner surface to be fixed using joist；Inner surface of the anchor cable from stope drift active workings at the top of tunnel
It is squeezed into roadway surrounding rock across pallet, W steel band and metal mesh, anchor cable stretches out roadway surrounding rock inner surface to be fixed using pallet.
On the basis of master's passive coupling supporting, to roadway floor anchor pouring reinforcement, concrete hardening layer is formed.
The mine I-beam bracket helps three parts to form by top and two, is connected by the way of welding, and two help leg bottom
There is billet in portion, effectively prevent because floor rock intensity is low, and I-steel sinks.
The anchor cable is high-strength prestress anchor cable, and prestressing force 100-130KN, every anchor cable is using 3-4 root Anchor Agent
It is anchored.
The top plate and two helps anchor pole for left-hand screw high strength resin bolt, and prestressing force 30-50KN, every anchor pole uses
1-2 root Anchor Agent is anchored.
The W steel band is equipped with hole corresponding with anchor pole and anchor cable spacing, the outermost stomidium centre distance W steel band of W steel band
Threshold value is 300-400mm.
After described two help anchor cable to apply prestressing force, the part contacted with metal mesh uses high-intensitive I-steel as joist, shape
At anchor cable girder construction, joist is equipped with anchor cable hole corresponding with anchor cable array pitch, the outermost stomidium centre distance joist ends of joist
Distance is 300-400mm.
The top plate and two help anchor pole apply prestressing force after, the part contacted with W steel band is fixed with high strength pallet,
Pallet is equipped with bolthole and anchor cable hole, and pallet specifications parameter is the mm of 110mm × 220mm × 12, and is lockked with lockset.
The floor grouting uses grouted anchor bar, length 1.5-2.5m, and injected hole arranges that grouting pressure is in plum blossom-shaped
1.0MPa-2.5MPa, slurries are single liquid cement-water-clay system, and the ratio of mud 0.5 mixes the waterglass of cement consumption 3.4%,
After the completion of floor grouting, backfill uses C40 concrete, and returning lift thickness is 100mm.
The passive coupling supporting system construction method of large deformation stope drift active workings master, including following construction procedure:
Step (a) determines tunnel section design parameter according to tunnel usage, geomechanical condition and the length of service；According to
Numerical simulation, theory analysis, engineering analogy determine tunnel respectively watch box supporting parameter；
Step (b) carries out close plating net to tunnel immediately, according to the array pitch of design, to the mining I-shaped in portion, side after digging laneway
Steel bracket digs bottom, installs billet, sets up mining i beam shape steel bracket, carries out initial support to country rock；
Step (c) lag tunnelling is met head on 1-2m, is helped to set bolthole in back and two according to design parameter, is installed W
Steel band, pallet and anchor pole apply prestressing force, and are lockked with lockset；
Step (d) lags rockbolt installation 3-5m, sets anchor cable hole at the top of the tunnel in confining pressure according to design parameter, installation W steel band,
Pallet and anchor cable apply prestressing force, and are lockked with lockset；
Step (e) lag top anchor cable installs 3-5m, and anchor cable hole, mounting bracket are set in roadway's sides country rock according to design parameter
Beam and anchor cable form anchor beam structure, apply prestressing force, and lockked with lockset；
The stagnant footwear upper anchor cable of step (f) installs 1-3m, sets bolthole in roadway floor country rock according to design parameter, borehole cleaning,
Grouted anchor bar, slip casting are installed；
After the completion of the main passive coupling supporting system of step (g), cure process is carried out to roadway floor casting concrete.
Compared with prior art, the invention has the following advantages that
1) present invention is first to carry out mine I-beam bracket supporting by the reasonable arrangement to process, provides passive protecting, can be with
Effectively control control country rock large deformation, increases roadway surrounding rock confining pressure, improves the peak strength and residual strength of country rock, increases self-supporting
Loading capability；
2) present invention can guarantee the anchor structure of superficial part country rock formation using anchor pole+metal mesh+W steel band supporting, reduce country rock
Plastic zone extends, and changes stress state, and anchor structure integrally allows to generate certain deformation, denaturation energy, top plate inside release country rock
Anchor cable+W steel band+joist supporting is helped in prestress anchorage cable+W steel band supporting and two, is effectively increased Surrounding Rock Control depth, is made roadway surrounding rock
Uniformly, stress distribution is coordinated for deformation, realizes that the anti-effect for allowing combination and control top release is formed in conjunction with mine I-beam bracket
The passive coupling supporting system of powerful master；
3) by the way that the active support mode of the passive protecting mode of mining i beam and anchor rete cord to be combined, lane is fully demonstrated
The passive coupling supporting scheme of the master in road realizes the coupling of prop and country rock in rigidity, intensity and structure；
4) present invention carries out anchor pouring reinforcement to bottom plate, can form actively effective bolt-grouting support structure, play the work for preventing pucking
With reinforcement roadway support.
5) control effect of the present invention is good, and preferable solution large deformation of roadway is serious, and roof fall, pucking, wall caving are strong, it is difficult to tie up
The problem of shield.
Detailed description of the invention
Fig. 1 is the passive coupling supporting structure drift section diagram of master that the present invention is implemented.
Fig. 2 is the passive coupling supporting structure back diagram of master that the present invention is implemented.
Fig. 3 is master's passive coupling supporting structure tunnel portion, side diagram that the present invention is implemented.
In figure: 1- mine I-beam bracket, 2- metal mesh, 3-W steel band, 4- anchor cable, 5- anchor pole, 6- grouted anchor bar, the bottom 7-
Plate hardened layer, 8- joist, 9- pallet, 10- billet.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
This specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1-Figure 3, the passive coupling supporting system of large deformation stope drift active workings master, including mine I-beam bracket 1, gold
Belong to net 2, W steel band 3, anchor cable 4, anchor pole 5, joist 8, pallet 9, shape and the roadway surrounding rock inner surface phase of mine I-beam bracket 1
Matching, is helped along back and two to surrounding rock supporting；Metal mesh 2 is laid between roadway surrounding rock and mining i beam；W steel band 3
It is laid on 2 inner surface of metal mesh, and is equipped with hole corresponding with anchor pole 5 and anchor cable 4；Pallet 9 is rectangle, is located at outside W steel band 3
Surface, and it is equipped with bolthole and anchor cable hole；Top plate and two helps anchor pole 5 to pass through pallet 9,3 and of W steel band from the inner surface of stope drift active workings
Metal mesh 2 is squeezed into roadway surrounding rock, and it is fixed using high strength pallet 9 that anchor pole 5 stretches out roadway surrounding rock inner surface；Joist 8 is located at lane
Road two is helped, and anchor cable hole corresponding with 4 array pitch of anchor cable is equipped with, and side portion's anchor cable 4 passes through joist 8, W steel from the inner surface of stope drift active workings
Band 3, metal mesh 2 are squeezed into roadway surrounding rock, and it is fixed using joist 8 that anchor cable 4 stretches out roadway surrounding rock inner surface；Top anchor cable 4 from return
The inner surface for adopting tunnel passes through anchor cable pallet 9, W steel band 3 and metal mesh 2 and squeezes into roadway surrounding rock, and anchor cable 4 stretches out in roadway surrounding rock
Surface is fixed using pallet 9；On the basis of master's passive coupling supporting, anchor pouring reinforcement is carried out to bottom plate, forms concrete hardening
Layer 7.
Mine I-beam bracket 1 helps three parts to form by top and two, is connected by the way of welding, and pedestal has billet
10, prevent I-steel from sinking down into bottom plate.
Anchor cable 4 is high-strength prestress anchor cable, prestressing force 100-130KN, every anchor cable 4 using 3-4 root Anchor Agent into
Row anchoring.
Anchor pole 5 is left-hand screw stiffness resin anchor, and prestressing force 30-50KN, every anchor pole 5 is using 1-2 root Anchor Agent
It is anchored.
W steel band 3 is equipped with bolthole and anchor cable hole, and anchor pole 5 or anchor cable 4 are helped according to top plate or two in the distance between hole
Spacing determine, 3 both ends of the hole distance W steel band of W steel band, 3 threshold value be 300-400mm.
After side portion's anchor cable 4 applies prestressing force, the part contacted with metal mesh 2 selects high-intensitive I-steel as joist 8, shape
At anchor cable girder construction, 8 both ends of the hole of joist is 300-400mm apart from 8 threshold value of joist.
After anchor pole 5 applies prestressing force, the part contacted with W steel band 3 selects high strength pallet 9 to be fixed, 9 specification of pallet
Parameter is the mm of 150mm × 150mm × 12, and is lockked with lockset.
Floor grouting uses grouted anchor bar 6, length 1.5-2.5m, and injected hole arranges that grouting pressure is in plum blossom-shaped
1.0MPa-2.5MPa slurries are single liquid cement-water-clay system.After the completion of floor grouting, backfill uses C40 concrete, backfill
Layer 7 is with a thickness of 100mm.
The construction method of the passive coupling supporting system of large deformation stope drift active workings master, including following construction procedure:
(1) according to tunnel usage, geomechanical condition and the length of service, tunnel section design parameter is determined；According to numerical value
Simulation, theory analysis, engineering analogy determine tunnel respectively watch box supporting parameter；
(2) after digging laneway, close plating net 2 is carried out to tunnel immediately, shape steel bracket is dug according to the array pitch of design
Billet 10 is installed at bottom, sets up mining i beam shape steel bracket 1, carries out initial support to country rock；
(3) lag tunnelling is met head on 1-2m, is set bolthole in confining pressure according to design parameter, is installed W steel band 3, anchor pole 5,
Apply prestressing force, and is lockked with lockset；
(4) lag anchor pole 5 installs 3-5m, sets anchor cable hole at the top of the tunnel in confining pressure according to design parameter, installs W steel band 3, anchor
Rope 4 applies prestressing force, and is lockked with lockset；
(5) lag top anchor cable 4 installs 3-5m, sets anchor cable hole, joist in tunnel portion, side confining pressure according to design parameter
8, anchor cable 4 form anchor beam structure, apply prestressing force, and lockked with lockset；
(6) stagnant footwear upper anchor cable 4 installs 1-3m, and bolthole, borehole cleaning, installation are set in roadway floor confining pressure according to design parameter
Grouted anchor bar 6, slip casting；
(7) after the completion of main passive coupling supporting system, cure process is carried out to roadway floor casting concrete, it is hard to form concrete
Change layer 7.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of passive coupling supporting system of large deformation stope drift active workings master, characterized in that including along back and the lane Liang Bangdui
Road surrounding rock supporting and the mine I-beam bracket to match with roadway surrounding rock inner surface, set between roadway surrounding rock and mining i beam
It is equipped with metal mesh, W steel band is laid on metal mesh inner surface, W steel band outer surface is equipped with high strength pallet, what back and two helped
Anchor pole passes through pallet, W steel band and metal mesh from the inner surface of stope drift active workings and squeezes into roadway surrounding rock, and anchor pole stretches out in roadway surrounding rock
Surface is fixed using high strength pallet；
Roadway's sides are equipped with joist, and roadway's sides anchor cable passes through joist, W steel band, metal mesh from the inner surface of stope drift active workings and squeezes into
In roadway surrounding rock, anchor cable stretches out roadway surrounding rock inner surface to be fixed using joist；Inner surface of the anchor cable from stope drift active workings at the top of tunnel
It is squeezed into roadway surrounding rock across pallet, W steel band and metal mesh, anchor cable stretches out roadway surrounding rock inner surface to be fixed using pallet.
2. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that in main passive coupling
On the basis of supporting, to roadway floor anchor pouring reinforcement, concrete hardening layer is formed.
3. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that the mining I-shaped
Steel bracket helps three parts to form by top and two, is connected by the way of welding, and two help leg bottom to have billet, effectively prevent because
Floor rock intensity is low, and I-steel sinks.
4. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that the anchor cable is height
Intensity prestress anchorage cable, prestressing force 100-130KN, every anchor cable are anchored using 3-4 root Anchor Agent.
5. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that the top plate and two
Side anchor pole is left-hand screw high strength resin bolt, prestressing force 30-50KN, and every anchor pole is anchored using 1-2 root Anchor Agent.
6. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that on the W steel band
Equipped with hole corresponding with anchor pole and anchor cable spacing, the outermost stomidium centre distance W steel band threshold value of W steel band is 300-400mm.
7. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that described two help anchor cable
After applying prestressing force, the part contacted with metal mesh uses high-intensitive I-steel as joist, forms anchor cable girder construction, sets on joist
There is anchor cable hole corresponding with anchor cable array pitch, the outermost stomidium centre distance joist ends distance of joist is 300-400mm.
8. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that the top plate and two
After helping anchor pole to apply prestressing force, the part contacted with W steel band is fixed with high strength pallet, and pallet is equipped with bolthole and anchor
Suo Kong, pallet specifications parameter is the mm of 110mm × 220mm × 12, and is lockked with lockset.
9. the passive coupling supporting system of large deformation stope drift active workings master as described in claim 1, characterized in that the floor grouting
Using grouted anchor bar, length 1.5-2.5m, injected hole is arranged in plum blossom-shaped, grouting pressure 1.0MPa-2.5MPa, and slurries are
Single liquid cement-water-clay system, the ratio of mud 0.5 mix the waterglass of cement consumption 3.4%, after the completion of floor grouting, backfill
Using C40 concrete, returning lift thickness is 100mm.
10. the passive coupling supporting system construction method of large deformation stope drift active workings master, characterized in that the following steps are included:
A) determines tunnel section design parameter according to tunnel usage, geomechanical condition and the length of service；According to numerical value
Simulation, theory analysis, engineering analogy determine tunnel respectively watch box supporting parameter；
B) carries out close plating net to tunnel immediately, according to the array pitch of design, to portion, side mining i beam branch after digging laneway
Frame digs bottom, installs billet, sets up mining i beam shape steel bracket, carries out initial support to country rock；
C) lags tunnelling and meets head on 1-2m, helps to set bolthole in back and two according to design parameter, installation W steel band,
Pallet and anchor pole apply prestressing force, and are lockked with lockset；
D) lags rockbolt installation 3-5m, sets anchor cable hole at the top of the tunnel in confining pressure according to design parameter, installs W steel band, pallet
And anchor cable, apply prestressing force, and lockked with lockset；
E) lag top anchor cable installs 3-5m, sets anchor cable hole in roadway's sides country rock according to design parameter, joist and
Anchor cable forms anchor beam structure, applies prestressing force, and lockked with lockset；
F) the stagnant footwear upper anchor cable of installs 1-3m, and bolthole, borehole cleaning, installation are set in roadway floor country rock according to design parameter
Grouted anchor bar, slip casting；
G) after the completion of the passive coupling supporting system of master, cure process is carried out to roadway floor casting concrete.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552731A (en) * | 2019-09-26 | 2019-12-10 | 中国矿业大学 | top coal caving stoping roadway grouting anchor cable supporting structure and advanced supporting method thereof |
| CN110793851A (en) * | 2019-09-30 | 2020-02-14 | 中国矿业大学 | Mining steel belt bearing capacity testing device and testing method |
| CN111894625A (en) * | 2020-08-13 | 2020-11-06 | 高军 | Large-section weak surrounding rock high-prestress anchor rod supporting method and device |
| CN112664194A (en) * | 2020-12-31 | 2021-04-16 | 中南大学 | Method for integrally reinforcing upper-wall broken surrounding rock long anchor cable |
| CN113236321A (en) * | 2021-06-29 | 2021-08-10 | 招金矿业股份有限公司 | Anchor rod supporting method |
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| CN110552731A (en) * | 2019-09-26 | 2019-12-10 | 中国矿业大学 | top coal caving stoping roadway grouting anchor cable supporting structure and advanced supporting method thereof |
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| CN110793851B (en) * | 2019-09-30 | 2021-08-20 | 中国矿业大学 | Mining steel belt bearing capacity testing device and testing method |
| CN111894625A (en) * | 2020-08-13 | 2020-11-06 | 高军 | Large-section weak surrounding rock high-prestress anchor rod supporting method and device |
| CN111894625B (en) * | 2020-08-13 | 2022-03-08 | 高军 | Large-section weak surrounding rock high-prestress anchor rod supporting method and device |
| CN112664194A (en) * | 2020-12-31 | 2021-04-16 | 中南大学 | Method for integrally reinforcing upper-wall broken surrounding rock long anchor cable |
| CN113236321A (en) * | 2021-06-29 | 2021-08-10 | 招金矿业股份有限公司 | Anchor rod supporting method |
| CN113236321B (en) * | 2021-06-29 | 2022-05-24 | 招金矿业股份有限公司 | Anchor rod supporting method |
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