CN109681248A - A kind of grouting cable anchor advanced support method - Google Patents
A kind of grouting cable anchor advanced support method Download PDFInfo
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- CN109681248A CN109681248A CN201811583423.5A CN201811583423A CN109681248A CN 109681248 A CN109681248 A CN 109681248A CN 201811583423 A CN201811583423 A CN 201811583423A CN 109681248 A CN109681248 A CN 109681248A
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- cable anchor
- grouting cable
- grouting
- support
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008093 supporting effect Effects 0.000 claims abstract description 43
- 230000003245 working effect Effects 0.000 claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 21
- 238000005065 mining Methods 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 238000007569 slipcasting Methods 0.000 claims description 21
- 239000011435 rock Substances 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 14
- 238000004873 anchoring Methods 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 5
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of grouting cable anchor advanced support methods, belong to advance support field, solve in the prior art that supporting intensity is insufficient, support speed is slow, and supporting causes roof cracking and the big problem of labor intensity of workers repeatedly.Advanced support method of the invention is the following steps are included: step 1, determines the stope drift active workings (1) to supporting in current stope (3)；Step 2 determines advance support distance L according to the advanced support pressure regularity of distribution and engineering geological condition of stope drift active workings (1)；Step 3 installs grouting cable anchor advance support additional to the top plate of stope drift active workings (1), forms roof support structure；When coal mining, while stope (3) is pushed ahead, grouting cable anchor advance support is constantly installed additional along direction of propulsion, maintains the advance support distance in safe range.Grouting cable anchor advanced support method of the invention improves supporting intensity and support efficiency, reduces labor intensity while guaranteeing safety coal extraction.
Description
Technical field
The present invention relates to advance support technical field more particularly to a kind of grouting cable anchor advanced support methods.
Background technique
Improving stability of surrounding rocks in roadway has an important influence Mine Safety in Production, and roadway surrounding rock unstability causes a large amount of personnel to hurt
It dies and property loss, therefore it is significant to Mine Safety in Production to reinforce roadway surrounding rock control.Lame advanced supporting mainly be
Prevent working face because lead abutment pressure and along inclined direction the superposition of support pressure due to there is deformation of the surrounding rock in tunnel, move
Phenomena such as moving, destroying.At this stage using comprehensive mechanization equipment carry out exploitation of coal resources, the constant pressure so generated compared with
Greatly, if active and effective support pattern can not be used, it will affect to the production efficiency of fully-mechanized mining working, simultaneously
It is also possible to that certain security risk can be brought, buries some potential safety problems to the work of subsequent coal mining.
Traditional advance support mode is that hydraulic prop cooperates π fashioned iron (big plate) canopy supporting advance support, is being used
Have some limitations in journey, there are the following problems: 1) supporting intensity is insufficient, if top plate is by biggish coal seam pressure,
Due intensity is not achieved in traditional advance support, and the top plate in fully-mechanized mining working exit very likely sinks at this time, simultaneously
The brill bottom that individual prop uses is more, and it is larger to carry out withdrawing processing difficulty to it, and it is close especially to cut top at fully-mechanized mining working rear portion
A possibility that region of collection, there are security risks, is larger；2) support speed is slower, traditional advance support generate supporting effect compared with
Slowly, pillar withdraws speed also relatively slowly, will impact to the speed of promoting comprehensively of working face, reduces coal mining efficiency and production
Amount；3) labor intensity is larger, during carrying out traditional advance support, continually need to be installed and be withdrawn, considerably increased
Labor intensity.In addition, forepoling hydraulic support have following defects that 1) during moving frame can roof supporting repeatedly, cause
Being crushed for top plate, is unfavorable for the safety management and maintenance to top plate, threatens to underworkings staff life and equipment；
2) violent sliding friction can be generated between top plate and top beam when forward, certain destruction is caused to back, influences it
Service life, while the stability and reliability of its work are also reduced, threaten the safety of staff；3) install, safeguard, dismantle it is this
Intensity of workers is very big when bracket.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of grouting cable anchor advanced support method, to solve existing skill
Advance support supporting intensity deficiency, support speed are slow in art, and supporting causes roof cracking to influence strength of roof and worker's labor repeatedly
The big problem of fatigue resistance.
The purpose of the present invention is mainly achieved through the following technical solutions:
A kind of grouting cable anchor advanced support method, comprising the following steps: step 1 is determined in current stope wait prop up
The stope drift active workings of shield；Step 2 determines super according to the advanced support pressure regularity of distribution and engineering geological condition of stope drift active workings
Preceding supporting distance L；Step 3 installs grouting cable anchor advance support additional to the top plate of stope drift active workings, forms roof support structure；It mines
When, while stope is pushed ahead, grouting cable anchor advance support is constantly installed additional along direction of propulsion, makes advance support distance
L is maintained in safe range.
Further, in step 3, installing grouting cable anchor advance support step additional includes: S1. on the top plate of stope drift active workings
Beat anchor cable hole；S2. grouting cable anchor is sent into anchor cable hole, after grouting cable anchor is completely fed to anchor cable hole bottom hole, successively installation is only starched
Plug, pallet and anchorage；S3. by Grouting Pipe to grouting cable anchor slip casting, slurry is injected along Grouting Pipe, flows into slip casting anchor from grout outlet
Gu section；S4. after completing after slip casting anchoring section slip casting and solidifying completely, tensioning preload is carried out to grouting cable anchor by anchorage.
Further, advance support distance L is,
L=L1+L2,
In formula, L is advance support distance, m；L1For most short safety support distance, m；L2To insure supporting distance, m.
Further, when coal mining, when stope is pushed ahead, the effective support distance L of advance support3It is more than or equal to
Most short safety support distance L1。
Further, roof support structure is combination arch structure, and combination arch structure includes steel mesh, steel band, anchor pole and note
Starch anchor cable；Combination arch structure is divided into anchor net combination arch area, anchor pole compression combination arch area and slurries diffusion from top plate to country rock
Reinforce arch area.
Further, steel mesh is close to back, and steel band is set to the outside of steel mesh.
Further, the quantity of anchor pole is more, and grouting cable anchor is alternately arranged with anchor pole, is arranged between adjacent two rows anchor pole
At least row's grouting cable anchor.
Further, the quantity of every row's grouting cable anchor is at least three.
Further, anchor pole passes perpendicularly through steel band and steel mesh, and anchored end is connected in back.
Further, grouting cable anchor penetrates anchor cable hole, and anchored end is connected in the stabilization rock stratum on back top.
Further, grouting cable anchor includes: silk plug, anchorage, external stop grouting plug, steel wire, Grouting Pipe and grout outlet.
Compared with prior art, the present invention one of at least has the advantages that:
A) grouting cable anchor advanced support method provided by the invention significantly improves branch using grouting cable anchor advance support
Speed is protected, supporting repeatedly is overcome and causes roof cracking and then influence the defect of strength of roof, the back production of advance support and coal mining
The propulsion of working face 3 is synchronous to be carried out, it is only necessary to carry out supporting supplement, behaviour in the front of existing advance support distance range
Facilitate, the working efficiency of advance support is improved while guaranteeing safety coal extraction, reduces labor intensity of workers.
B) grouting cable anchor advanced support method provided by the invention cooperates bolting with wire mesh using grouting cable anchor, can be formed
The combination arch structure of one effective enlarged in thickness of multilayer, i.e. anchor net combine arch area, anchor pole compressional zone combination arch area and slurries and expand
It dissipates and reinforces arch area, avoid and destroy back, effectively maintain tunnel overall stability, to expand the effective of supporting construction
Range is carried, improves the bearing capacity and supporting intensity of supporting construction, and then improve stope safety.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is that stope shows face figure during the present invention is implemented；
Fig. 2 is grouting cable anchor structural schematic diagram；
Fig. 3 is stope drift active workings supporting plan view during the present invention is implemented；
Fig. 4 is stope drift active workings grouting cable anchor advance support cross-section diagram.
Appended drawing reference:
1- stope drift active workings；2- coal and rock；3- stope；The goaf 4-；5- anchor pole；6- grouting cable anchor；7- steel band；8-
Pallet；9- silk plug；10- anchorage；11- external stop grouting plug；12- steel wire；13- Grouting Pipe；14- grout outlet.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
A specific embodiment of the invention, discloses a kind of grouting cable anchor advanced support method, comprising the following steps:
Step 1 determines the stope drift active workings 1 to supporting in current stope 3.The determination of stope drift active workings 1, according to ground
Matter condition and engineering working condition, the stope drift active workings 1 that selector closes above-mentioned condition carry out advance support.
Step 2 chooses single or a plurality of stope drift active workings 1；According to the advanced support pressure regularity of distribution of stope drift active workings 1 with
And engineering geological condition, determine advance support distance L.
Step 3 installs grouting cable anchor advance support additional to the top plate of stope drift active workings 1 on the basis of original permanent support,
Form roof support structure.When coal mining, while stope 3 is pushed ahead, grouting cable anchor 6 is constantly installed additional along direction of propulsion
Advance support maintains advance support distance in safe range.
In the present embodiment, since stope drift active workings have been dug in advance before coal mining, permanent branch has been carried out while driving
It protects (bolting with wire mesh), step 3 is carried out on the basis of original permanent support.Specifically, in the same of coal working face back production
When, along direction of advance on 1 top plate of stope drift active workings, every row's anchor pole 5 construction anchor cable hole.While construction anchor cable hole, in anchor
Suo Kongzhong installs grouting cable anchor 6 and pallet 8；Slip casting is carried out to roof fracture using high-pressure pump after 6 sealing of hole of grouting cable anchor, broken
The gap of top plate and hole body enrich, and stope drift active workings top plate is cementing integral, fill the specific steps of grouting cable anchor advance support such as
Under:
S1. anchor cable hole is beaten on the top plate of stope drift active workings 1；
S2. the feeding anchor cable hole of grouting cable anchor 6 is successively installed external after grouting cable anchor 6 is completely fed to anchor cable hole bottom hole
Formula stop grouting plug 11, pallet 8 and anchorage 10；
S3. by Grouting Pipe 13 to 6 slip casting of grouting cable anchor, slurry is injected along Grouting Pipe 13, flows into slip casting from grout outlet 14
Anchoring section；After completing slip casting, Grouting Pipe 13 is blocked with silk plug 9, prevents slurries from outflowing.
S4. after completing after slip casting anchoring section slip casting and solidifying completely, it is pre- that tensioning is carried out to grouting cable anchor 6 by anchorage 10
Tightly.
Fig. 1 shows the positional relationship between goaf 4, stope 3, coal and rock 2 and stope drift active workings 1, in back production
While working face 3 carries out coal mining activity, 3 front coal and rock of stope, 2 two sides are needed to carry out with the supporting of advance support
The top plate of stope drift active workings 1 in distance range carries out grouting cable anchor advance support.With the returning in coal and rock 2 of stope 3
The passage forward for adopting direction is synchronized and protect always to the advance support range of stope drift active workings 1 along the passage forward of mining direction
The advance support distance for holding 3 front of stope maintains in safe range.
In the present embodiment, the effective support distance L of advance support3Refer to mine during guarantee mine safety supporting away from
From；Most short safety support distance L1Refer to the most short effective support distance for the safety that guarantees to mine；Insure supporting distance L2Refer in order to
Advance support is carried out while stope 3 is pushed ahead, and guarantees the effective support distance L of advance support3Consistently greater than
Equal to most short safety support distance L1And the supporting distance being manually set, insure supporting distance L2With stope fltting speed,
Support speed and slip casting setting time are related；Advance support distance L is equal to most short safety support distance L1With insurance supporting distance L2
The sum of, i.e. L=L1+L2, in formula, L is advance support distance, m；L1For most short safety support distance, m；L2For insurance supporting away from
From m.
Guarantee supporting effect, grouting cable anchor advanced support method structure of the invention to improve the supporting intensity of advance support
The roof support structure built is combination arch structure, and combination arch structure includes steel mesh, steel band 7, anchor pole 5 and grouting cable anchor 6, combination
Arch structure is divided into anchor net combination arch area, anchor pole compressional zone combination arch area and slurries diffusion to country rock from top plate and reinforces arch area.
Bolting with wire mesh is cooperated using grouting cable anchor, is capable of forming the combination arch structure of an effective enlarged in thickness of multilayer, i.e. anchor net group
It closes arch area, anchor pole compressional zone combination arch area and slurries diffusion and reinforces arch area, so that effective carrying range of supporting construction is expanded,
Improve the globality and bearing capacity of supporting construction.Steel mesh is close to back, and steel band 7 is set to the outside of steel mesh,
Grouting cable anchor play anchor cable squeeze reinforce, multiple layer combination arch structure and in terms of multiple action, improve rock
Body intensity makes top plate second consolidation, country rock itself and a part as supporting construction, and forms an entirety with protolith, makes
Stope drift active workings keep stablizing and being not likely to produce destruction.
In one preferred embodiment of the present embodiment, the quantity of anchor pole 5 is more, and grouting cable anchor 6 replaces cloth with anchor pole 5
It sets, at least row's grouting cable anchor 6 is set between adjacent two rows anchor poles 5, the quantity of every row's anchor pole 5, spacing are according to practical geology item
Part determines, guarantees 5 uniform force of anchor pole, and then guarantees to improve the stability and safety of supporting to the supporting intensity of top plate.
In order to further ensure supporting intensity, grouting cable anchor 6 is alternately arranged with anchor pole 5, is set between adjacent two rows of anchor poles 5
A row or multi-row grouting cable anchor 6 is set, the quantity of every row's grouting cable anchor 6 is at least three, and the quantity of grouting cable anchor 6 is according to required super
The intensity and engineering geological condition of preceding supporting determine, as shown in figure 4, anchor pole 5 passes perpendicularly through steel band 7 and steel mesh, the anchor of anchor pole 5
Fixed end is connected in back.Grouting cable anchor 6 passes through steel mesh, penetrates anchor cable hole；The anchored end of grouting cable anchor 6 is connected to lane
In the stabilization rock stratum on road top plate top.The outer anchoring section of anchor pole 5 and grouting cable anchor 6 is provided with pallet 8, such as Fig. 3 and Fig. 4 institute
Show.After 6 sealing of hole of grouting cable anchor, slip casting is carried out to roof fracture with high-pressure pump, after having infused slurry, blocks Grouting Pipe 13 with silk plug 9,
It prevents slurries from outflowing, the gap of breaking roof and hole body is enriched, the top plate of stope drift active workings 1 is cementing integral.Using slip casting anchor
Suo Peihe bolting with wire mesh can form the combination arch structure of an effective enlarged in thickness of multilayer, i.e. anchor net combines arch area, anchor pole
Compressional zone combination arch area and slurries diffusion reinforce arch area and improve supporting to expand effective carrying range of supporting construction
The globality and bearing capacity of structure.
As shown in Fig. 2, 6 structure of grouting cable anchor provided in an embodiment of the present invention, including silk plug 9, anchorage 10, external are only starched
Plug 11, steel wire 12, Grouting Pipe 13, grout outlet 14 form.Grouting cable anchor 6 can successively be divided into outer anchoring section, slip casting anchoring section and
Resin anchoring section.It is steel strand wires 12 outside grouting cable anchor 6, is provided with Grouting Pipe 13 in grouting cable anchor, Grouting Pipe middle and back has out
Starch mouth 14.By Grouting Pipe 13 to wall rock grouting, slurries are flowed out by grout outlet 14, and the gap of breaking roof and hole body are enriched,
Stope drift active workings top plate is cementing integral.The vertical load acted on top plate to be efficiently transferred to two after slip casting to help, lead to
Bottom plate can be transmitted to load by crossing the reinforcing to side, simultaneously because the increasing of built-up arch structural thickness, overcomes and act on bottom
The defect of Load concentration degree on plate, bottom plate is more stable, mitigates the generation of bottom distension phenomenon.In addition, base slab stability facilitates two
The stabilization of side, bottom plate and two helps to stablize and has been able to maintain the stabilization of top plate again.Advanced support method provided in this embodiment, in crack
The roadway surrounding rock control and supporting and maintenance effects that development belt, roof cracking band are disturbed by back production are obvious.
In the present embodiment, grouting cable anchor 6 is sealingly fastened at the grouting port on coal petrography wall by external stop grouting plug 11, is infused
Anchorage 10, pallet 8 are disposed on slurry anchor cable 6, pallet 8 squeezes the stub end of external grouting plug 11, while utilizing anchorage
10 pre-tighten, and improve the bearing capacity and supporting effect of anchor cable.
Compared with prior art, the grouting cable anchor advanced support method of the present embodiment, innovative proposing utilize slip casting
Anchor cable carries out the mode of advance support, and advance support is synchronous with the propulsion of stope 3 of coal mining to carry out, it is only necessary to existing
Advance support distance range front carry out supporting supplement, it is easy to operate, improved while guaranteeing safety coal extraction
The working efficiency of advance support reduces the labor intensity of worker.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of grouting cable anchor advanced support method, which comprises the following steps:
Step 1 determines the stope drift active workings (1) to supporting in current stope (3)；
Step 2 determines advance support according to the advanced support pressure regularity of distribution and engineering geological condition of stope drift active workings (1)
Distance L；
Step 3 installs grouting cable anchor advance support additional to the top plate of stope drift active workings (1), forms roof support structure；
When coal mining, while stope (3) is pushed ahead, grouting cable anchor advance support is constantly installed additional along direction of propulsion, is made
The advance support distance L is maintained in safe range.
2. grouting cable anchor advanced support method according to claim 1, which is characterized in that in step 3, install slip casting anchor additional
Rope advance support step includes:
S1. anchor cable hole is beaten on the top plate of the stope drift active workings (1)；
S2. grouting cable anchor (6) are sent into anchor cable hole, after grouting cable anchor (6) is completely fed to anchor cable hole bottom hole, successively installation is only starched
Fill in (11), pallet (8) and anchorage (10)；
S3. by Grouting Pipe (13) to grouting cable anchor (6) slip casting, slurry is injected along Grouting Pipe (13), is flowed into from grout outlet (14)
Slip casting anchoring section；
S4. after completing after slip casting anchoring section slip casting and solidifying completely, it is pre- that tensioning is carried out to grouting cable anchor (6) by anchorage (10)
Tightly.
3. grouting cable anchor advanced support method according to claim 1, which is characterized in that the advance support distance L is,
L=L1+L2,
In formula, L is advance support distance, m；L1For most short safety support distance, m；L2To insure supporting distance, m.
4. grouting cable anchor advanced support method according to claim 1, which is characterized in that the roof support structure is group
Arch structure is closed, the combination arch structure includes steel mesh, steel band (7), anchor pole (5) and grouting cable anchor (6)；
The combination arch structure is divided into anchor net combination arch area, anchor pole compression combination arch area and slurries diffusion from top plate to country rock
Reinforce arch area.
5. grouting cable anchor advanced support method according to claim 4, which is characterized in that the steel mesh is close to tunnel top
Plate, the steel band (7) are set to the outside of steel mesh.
6. grouting cable anchor advanced support method according to claim 5, which is characterized in that the quantity of the anchor pole (5) is
More, the grouting cable anchor (6) is alternately arranged with anchor pole (5), and at least row's grouting cable anchor is arranged between adjacent two rows anchor pole (5)
(6)。
7. grouting cable anchor advanced support method according to claim 6, which is characterized in that the number of every row's grouting cable anchor (6)
Amount is at least three.
8. grouting cable anchor advanced support method according to claim 7, which is characterized in that the anchor pole (5) passes perpendicularly through
Steel band (7) and steel mesh, anchored end are connected in back.
9. grouting cable anchor advanced support method according to claim 8, which is characterized in that the grouting cable anchor (6) penetrates
Anchor cable hole, anchored end are connected in the stabilization rock stratum on back top.
10. according to claim 1 to grouting cable anchor advanced support method described in 9, which is characterized in that the grouting cable anchor (6)
It include: silk plug (9), anchorage (10), external stop grouting plug (11), steel wire (12), Grouting Pipe (13) and grout outlet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583423.5A CN109681248B (en) | 2018-12-24 | 2018-12-24 | Advanced support method for grouting anchor cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583423.5A CN109681248B (en) | 2018-12-24 | 2018-12-24 | Advanced support method for grouting anchor cable |
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| CN109681248A true CN109681248A (en) | 2019-04-26 |
| CN109681248B CN109681248B (en) | 2020-01-17 |
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| CN201811583423.5A Active CN109681248B (en) | 2018-12-24 | 2018-12-24 | Advanced support method for grouting anchor cable |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529144A (en) * | 2019-09-26 | 2019-12-03 | 中国矿业大学 | A kind of hybrid advanced support method of light section stope drift active workings |
| 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 |
| CN110566254A (en) * | 2019-10-09 | 2019-12-13 | 中国矿业大学 | Grouting anchor cable hole sealing device and grouting anchor cable |
| CN110566238A (en) * | 2019-09-26 | 2019-12-13 | 中国矿业大学 | Mud rock roof small coal pillar gob-side roadway supporting structure and method thereof |
| CN110593924A (en) * | 2019-09-26 | 2019-12-20 | 中国矿业大学 | Support method based on full life cycle of mining roadway |
| CN110792450A (en) * | 2019-09-26 | 2020-02-14 | 中国矿业大学 | Method for determining advanced support of grouting anchor cable |
| CN111287778A (en) * | 2020-03-09 | 2020-06-16 | 新能矿业有限公司 | Large-span cantilever beam anchor cable supporting method and roadway roof combined supporting method |
| CN112081602A (en) * | 2020-07-27 | 2020-12-15 | 枣庄矿业(集团)付村煤业有限公司 | Advanced support technology for fully mechanized mining face of thick coal seam |
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| CN111287778B (en) * | 2020-03-09 | 2021-09-17 | 新能矿业有限公司 | Large-span cantilever beam anchor cable supporting method and roadway roof combined supporting method |
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| CN112610258A (en) * | 2020-12-09 | 2021-04-06 | 中国矿业大学 | Impact mine stoping roadway advanced support method applied to smart mine |
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