CN110529151A - A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method - Google Patents
A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method Download PDFInfo
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- CN110529151A CN110529151A CN201910807808.3A CN201910807808A CN110529151A CN 110529151 A CN110529151 A CN 110529151A CN 201910807808 A CN201910807808 A CN 201910807808A CN 110529151 A CN110529151 A CN 110529151A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000013316 zoning Methods 0.000 title claims abstract description 15
- 238000007596 consolidation process Methods 0.000 title claims abstract description 14
- 239000003245 coal Substances 0.000 claims abstract description 25
- 238000007569 slipcasting Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 11
- 229910001315 Tool steel Inorganic materials 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000011378 shotcrete Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 6
- 230000002708 enhancing effect Effects 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 241001074085 Scophthalmus aquosus Species 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- ZHVOBYWXERUHMN-KVJKMEBSSA-N 3-[(3s,5r,8r,9s,10s,13s,14s,17s)-10,13-dimethyl-3-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]-2h-furan-5-one Chemical compound O([C@@H]1C[C@H]2CC[C@@H]3[C@@H]([C@]2(CC1)C)CC[C@]1([C@H]3CC[C@@H]1C=1COC(=O)C=1)C)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O ZHVOBYWXERUHMN-KVJKMEBSSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Classifications
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/28—Longitudinal struts, i.e. longitudinal connections between adjoining arches
-
- 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
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)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full methods.The present invention is mainly to solve the technical problem that tunnel existing for existing passing sunk pillars on full method cannot safeguard for a long time, roadway deformation amount helps greatly the amount of shifting near with two and helps drum amount big.The technical scheme is that including the following steps: step 1: the roadway's sides at driving face rear lay two ear drill sites；Step 2: it meets head on respectively from driving face, drill site lateral wall is constructed to karst collapse col umn, horizontal this layer of position, top plate and bottom plate where coal petrography interface brill injected hole and slip casting, injected hole radiation tunnel；Step 3: after karst collapse col umn grouting and reinforcing, digging laneway, using anchor pole and rete cord combined supporting；Step 4: to reinforcing laneway area surface gunite；Step 5: implementing long short-bore cement injection technology to reinforcing laneway area country rock, forms multiple bearing-load arch around tunnel and pressure is allowed to encircle；Step 6: tool steel shed is set up to reinforcing laneway area, enhances the passive bearing capacity in tunnel.
Description
Technical field
The present invention relates to a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full methods, and it is raw that it belongs to safety of coal mines
Produce technical field.
Background technique
It in coal production organizational process, is influenced by geological conditions, inevitably in driving or exploitation process
Encounter this kind of geological structure of karst collapse col umn.Karst collapse col umn possession matter exceptions area, the especially country rock of coal petrography interface be discontinuous, intensity compared with
It is low, or even the water of other layer of position is imported into working face.When tunnelling passes through the region, back sinking, two are easily caused
Phenomena such as amount of shifting near is big, side drum pucking is serious generation is helped, there are larger security risks, and it is raw to seriously affect ventilation, transport, pedestrian etc.
Production process.In order to solve karst collapse col umn abnormal area roadway deformation destabilization problems, needs to take special control measures, be adopted at present
Administering method substantially has following several:
1. by enhancing supporting parameter, the modes such as array pitch, reinforcement placing canopy between diminution anchor shaft anchor cable；
2. by implementing grouting and reinforcing to roadway surrounding rock；
3. passing through brushing repeatedly, the modes such as caunch, undercut；
But by implementing existing passing sunk pillars on full method, discovery tunnel cannot still safeguard for a long time, roadway deformation amount
Still very big, it especially shows as two and helps the amount of shifting near and side drum amount larger, seriously affect the ventilation and transport of exploiting field main entry；Meanwhile
Larger security risk is still remained in tunneling process.
Summary of the invention
Present invention aim to address tunnels existing for existing passing sunk pillars on full method cannot still safeguard for a long time, tunnel becomes
Shape amount is big and two help the amount of shifting near and side drum to measure big technical problem, and it is excessively sunken to provide a kind of fully mechanized workface Grading And Zoning integrative consolidation
Fall column method.Karst collapse col umn abnormal area tunnel is effectively reduced in the roadway deformation amount of viability, guarantee dash, transport,
Smooth, the safe construction during guarantee tunnelling of the production processes such as pedestrian.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method comprising following steps:
Step 1: the position karst collapse col umn 15m is met in front of driving face and stops driving, in the tunnel two at driving face rear
Side lays two ear drill sites, expands the treatment range of karst collapse col umn；
Step 2: meet head on respectively from driving face, drill site lateral wall to karst collapse col umn construct, coal petrography interface bore injected hole
And slip casting, injected hole radiate this layer of position, top plate and the bottom plate of level where tunnel, make the coal petrography interface within the scope of tunnel repair
Roof and floor increases without water, rock mass strength enhancing, bonding degree；
Step 3: after karst collapse col umn grouting and reinforcing, digging laneway, within the scope of karst collapse col umn cylinder and its 20m reinforcing laneway of front and back
Area uses anchor pole and rete cord combined supporting, and two shoulder of tunnel lays two fillet anchor poles；
Step 4: to reinforcing laneway area surface gunite, enhance the globality of support system, prevent roadway surrounding rock fast
Fast weathering and reduce bearing capacity of the wall rock；
Step 5: implement long short-bore cement injection technology to reinforcing laneway area country rock, form multiple pressure-bearings around tunnel
Encircle and pressure is allowed to encircle, enhances the survivability in tunnel；
Step 6: tool steel shed is set up to reinforcing laneway area, enhances the passive bearing capacity in tunnel, guarantees the stability in tunnel.
Further, the ear drill site is laid in the coal wall two for stopping digging 5~10m of line position rear and helps, larger to avoid
Unsupported back span, two drill site step types arrangement, mode of taking a step is to greatest extent close to coal petrography interface as principle.
Further, the coal petrography interface inlet well uses three-dimensional arrangement, and drilling over long distances uses km drilling machine
Orientation construction, Grouting Pipe are diameter 25mm steel pipe, and slip casting bore end spacing is not more than 2m, guarantees that the coal petrography interface of the zone of influence is complete
Cover slip casting.
Further, the coal petrography interface range of grouting is 3~5 times of tunnel effective radius.
Further, the cement slurry jet thickness is 30~50mm.
Further, the Grouting Pipe of the long short-bore cement injection technology is steel pipe, and diameter 25mm, short slip casting length of tube is
2~3m, long slip casting length of tube are 5~7m, and short-bore slip casting uses low pressure and mass flow grouting mode, and long hole slip casting uses the small stream of high pressure
Measure grouting mode.
Further, the tool steel shed is made of 20A model steel I-beam and steel leg, and ceiling timber wedge and top plate connect reality,
It is connected between canopy with metal pull bar, 0.8~1.2m of canopy spacing.
The invention has the benefit that
Passing sunk pillars on full method provided by the invention increases karst collapse col umn and administers region, improves the punching of tunnel resisting mining stress
The ability hit increases roadway support intensity, and the Grading And Zoning for constituting " grouting and reinforcing+active support+passive protecting " is comprehensive
Passing sunk pillars on full scheme is reinforced, the deflection in tunnel within the scope of passing sunk pillars on full is effectively reduced, ensures safety production.
Detailed description of the invention
Fig. 1 is that fully mechanized workface karst collapse col umn of the present invention reinforces floor map；
Fig. 2 meets head on for fully mechanized workface of the present invention, two help, injected hole sets sectional elevation schematic diagram in drill site；
Fig. 3 meets head on for fully mechanized workface of the present invention, two help, injected hole sets sectional schematic diagram in drill site；
Fig. 4 is that digging laneway wall rock grouting of the present invention protects lane schematic diagram；
Fig. 5 is digging laneway of the present invention " anchor rete cord+tool steel shed " comprehensive support schematic diagram；
In figure: 1-karst collapse col umn, 2-tunnels, 3-stop digging line position, 4-drill sites I, 5-drill sites II, 6-driving faces
It meets head on, 7-injected holes, 8-karst collapse col umn grouting and reinforcing ranges, 9-cement slurries, 10-bearing-load arch I, 11-bearing-load arch II, 12-
Allow pressure arch I, 13-allow pressure arch II, 14-anchor poles, 15-anchor cables, 16-steel legs, 17-pull rods, 18-girder steels, 19-timber wedges.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1~fig. 5, one of the present embodiment fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full side
Method comprising following steps:
Step 1: it is met in front of driving face and stops driving at the position 15m of karst collapse col umn 1, at driving face rear
2 liang of tunnel side lays two ear drill site, that is, drill sites I 4 and drill site II 5, expands the treatment range of karst collapse col umn；
Step 2: it constructs respectively from meet head on 6, drill site I 4 and II 5 lateral wall of drill site of driving face to karst collapse col umn 1, in coal petrography
Interface bores injected hole 7 and slip casting, and injected hole 7 radiates this layer of position, top plate and the bottom plate of level where tunnel, influences tunnel 2
Coal petrography interface roof and floor in range increases without water, rock mass strength enhancing, bonding degree；
Step 3: after 1 grouting and reinforcing of karst collapse col umn, digging laneway 2, within the scope of 1 cylinder of the karst collapse col umn and its front and back tunnel 20m adds
Gu Qu forms combined support with bolt-net-cable using anchor pole 14 and anchor cable 15, and two shoulder of tunnel lays two fillet anchor poles 14；
Step 4: to 2 stabilization zone surface gunite 9 of tunnel, enhance the globality of support system, prevent roadway surrounding rock
Rapid-weathering and reduce bearing capacity of the wall rock；
Step 5: implement long short-bore cement injection technology to 2 stabilization zone country rock of tunnel, form multiple hold around tunnel 2
Pressure encircles I 10, bearing-load arch II 11 and allows pressure to encircle I 12, allows and press arch II 13, the survivability in enhancing tunnel 2；
Step 6: tool steel shed is set up to 2 stabilization zone of tunnel, enhances the passive bearing capacity in tunnel 2, guarantees the stabilization in tunnel 2
Property.
The ear drill site I 4 and drill site II 5 be laid in stop dig 3 5~10m of rear of line position coal wall two help, for avoid compared with
Big unsupported back span, two drill site step types arrangement, mode of taking a step is to greatest extent close to coal petrography interface as principle.
The injected hole 7 of the coal petrography interface uses three-dimensional arrangement, and drilling over long distances orients construction using km drilling machine,
Grouting Pipe is diameter 25mm steel pipe, and 7 end spacing of injected hole is not more than 2m, guarantees the coal petrography interface all standing note of the zone of influence
Slurry.
The coal petrography interface range of grouting is 3~5 times of 2 effective radius of tunnel.
9 jet thickness of cement slurry is 30~50mm.
The Grouting Pipe of the long short-bore cement injection technology is steel pipe, and diameter 25mm, short slip casting length of tube is 2~3m, long
Slip casting length of tube is 5~7m, and short-bore slip casting uses low pressure and mass flow grouting mode, and long hole slip casting uses high-pressure low-flow slip casting side
Formula.
The tool steel shed is made of 20A model steel I-beam 18 and steel leg 16, and ceiling timber wedge 19 and top plate connect reality, between canopy
It is connected with metal pull bar 17,0.8~1.2m of canopy spacing.
Claims (7)
1. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method, it is characterised in that include the following steps:
Step 1: the position karst collapse col umn 15m is met in front of driving face and stops driving, the roadway's sides cloth at driving face rear
If two ear drill sites, expand the treatment range of karst collapse col umn；
Step 2: meeting head on from driving face, drill site lateral wall is constructed to karst collapse col umn respectively, bores and injected hole and infuses in coal petrography interface
Slurry, injected hole radiate this layer of position, top plate and the bottom plate of level where tunnel, make the coal petrography interface top bottom within the scope of tunnel repair
Plate increases without water, rock mass strength enhancing, bonding degree；
Step 3: after karst collapse col umn grouting and reinforcing, digging laneway, within the scope of karst collapse col umn cylinder and its front and back 20m reinforcing laneway area is adopted
With anchor pole and rete cord combined supporting, two shoulder of tunnel lays two fillet anchor poles；
Step 4: to reinforcing laneway area surface gunite, enhancing the globality of support system, prevents the quick wind of roadway surrounding rock
Change and reduces bearing capacity of the wall rock；
Step 5: implementing long short-bore cement injection technology to reinforcing laneway area country rock, formed around tunnel multiple bearing-load arch and
It allows pressure to encircle, enhances the survivability in tunnel；
Step 6: tool steel shed is set up to reinforcing laneway area, enhances the passive bearing capacity in tunnel, guarantees the stability in tunnel.
2. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 1, feature exist
In: the ear drill site is laid in the coal wall two for stopping digging 5~10m of line position rear and helps, and to avoid larger unsupported back span, two drill sites are stepped
Step formula arrangement, mode of taking a step is to greatest extent close to coal petrography interface as principle.
3. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 1, feature exist
In: the coal petrography interface inlet well uses three-dimensional arrangement, and drilling is using the orientation construction of km drilling machine, Grouting Pipe over long distances
For diameter 25mm steel pipe, slip casting bore end spacing is not more than 2m, guarantees the coal petrography interface all standing slip casting of the zone of influence.
4. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 3, feature exist
In: the coal petrography interface range of grouting is 3~5 times of tunnel effective radius.
5. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 1, feature exist
In: the cement slurry jet thickness is 30~50mm.
6. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 1, feature exist
In: the Grouting Pipe of the long short-bore cement injection technology is steel pipe, and diameter 25mm, short slip casting length of tube is 2~3m, long Grouting Pipe
Length is 5~7m, and short-bore slip casting uses low pressure and mass flow grouting mode, and long hole slip casting uses high-pressure low-flow grouting mode.
7. a kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method according to claim 1, feature exist
In: the tool steel shed is made of 20A model steel I-beam and steel leg, and ceiling timber wedge and top plate connect reality, uses metal pull bar between canopy
It is connected, 0.8~1.2m of canopy spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807808.3A CN110529151A (en) | 2019-08-29 | 2019-08-29 | A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807808.3A CN110529151A (en) | 2019-08-29 | 2019-08-29 | A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method |
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| CN110529151A true CN110529151A (en) | 2019-12-03 |
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| CN201910807808.3A Pending CN110529151A (en) | 2019-08-29 | 2019-08-29 | A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075482A (en) * | 2020-01-02 | 2020-04-28 | 华北科技学院 | Working face collapse column grouting waterproof treatment method |
| CN111828036A (en) * | 2020-08-04 | 2020-10-27 | 天津爱纷销科技有限公司 | Tunnel supporting structure |
| CN111828014A (en) * | 2020-08-04 | 2020-10-27 | 天津爱纷销科技有限公司 | Tunnel construction method |
| CN111894601A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Coal seam roadway surrounding rock structure passing geological structure and advanced modification tunneling method thereof |
| CN111894600A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Three-soft coal seam roadway surrounding rock structure and tunneling method thereof |
| CN112112559A (en) * | 2020-08-26 | 2020-12-22 | 山西晋城无烟煤矿业集团有限责任公司 | Method for segmented grouting of same grouting hole of underground mining face collapse column roadway |
| CN113431578A (en) * | 2021-06-11 | 2021-09-24 | 中国煤炭地质总局水文地质局 | Coal mine collapse column reinforcing construction process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075482A (en) * | 2020-01-02 | 2020-04-28 | 华北科技学院 | Working face collapse column grouting waterproof treatment method |
| CN111894601A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Coal seam roadway surrounding rock structure passing geological structure and advanced modification tunneling method thereof |
| CN111894600A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Three-soft coal seam roadway surrounding rock structure and tunneling method thereof |
| CN111828036A (en) * | 2020-08-04 | 2020-10-27 | 天津爱纷销科技有限公司 | Tunnel supporting structure |
| CN111828014A (en) * | 2020-08-04 | 2020-10-27 | 天津爱纷销科技有限公司 | Tunnel construction method |
| CN112112559A (en) * | 2020-08-26 | 2020-12-22 | 山西晋城无烟煤矿业集团有限责任公司 | Method for segmented grouting of same grouting hole of underground mining face collapse column roadway |
| CN113431578A (en) * | 2021-06-11 | 2021-09-24 | 中国煤炭地质总局水文地质局 | Coal mine collapse column reinforcing construction process |
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Application publication date: 20191203 |