CN105370299B - The buried empty roadway protection processing in high seam thin coal pillar edge of km - Google Patents
The buried empty roadway protection processing in high seam thin coal pillar edge of km Download PDFInfo
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- CN105370299B CN105370299B CN201510853822.9A CN201510853822A CN105370299B CN 105370299 B CN105370299 B CN 105370299B CN 201510853822 A CN201510853822 A CN 201510853822A CN 105370299 B CN105370299 B CN 105370299B
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- anchor
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- steel band
- helped
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- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 title claims abstract description 8
- 238000005728 strengthening Methods 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000004873 anchoring Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005065 mining Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000003245 working effect Effects 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
- 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
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- 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)
- Mechanical Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of buried empty roadway protection processing in high seam thin coal pillar edge of km, it is characterised in that and first, after gob side entry is excavated according to design section, helped first using anchor+band+net support form supporting roof and two；Second, top plate and two are helped to carry out strengthening supporting；3rd, gob side entry advance support.Due to adding the combined supporting form of anchor cable beam column using anchor band net, roadway deformation can be effectively controlled, meets the production needs of next working face；Advance support is carried out using unit supports formula advance timbering particularly in the gob side entry in front of working face, deformation of the surrounding rock in tunnel amount is obviously reduced, and compared with using individual prop supporting, two help average deformation amount to reduce 566mm, roof to floor convergence reduces 767mm, and pucking amount, which is reduced, reaches 473mm.
Description
Technical field
The present invention relates to coal mining technology, more particularly to along empty roadway protection processing.
Background technology
At present, coal mining depth reaches km.With coal mining depth, the increase of intensity, and to the big of the energy
Amount demand, many Deep Mines are general by the way of thin coal pillar gob side entry driving is stayed in goaf side stope drift active workings.Due to adopting
Deep increase year by year, especially in high seam (more than 3.5m) exploitation, gob side entry highlights that surrouding rock deformation is strong, destroys model
Enclose greatly, roof fall, wall caving easily occur.So that gob side entry maintenance is more and more difficult, the fltting speed and peace of working face are constrained
Full production, has seriously affected the construction in safe and efficient work face although in the past few years scientific research department, colleges and universities and production scene strengthen
To deep fractures production practice, the research of roadway support, also achieves certain effect, but for deep-well gob side entry stability
Aspect also recognizes deficiency.《Safety regulations in coal mine》Required 20m advance supports are far from meeting gob side entry to advanced branch
The demand of shield.At the same time as working face installed power is continuously increased, equipment size is increasing, and supporting is with opening during gob side entry driving
Advance support area, height are also bigger during adopting, therefore supporting becomes high yield with advance support during exploitation during gob side entry driving
The emphasis and difficult point of working face protection (are put) in efficient fully mechanized mining.For the depth that roof pressure is big, deformation is serious, deformation effect scope is big
Portion's big cross section gob side entry, during gob side entry driving frequently with anchor pole and Application of Combined Support with Anchor, in application process there are anchor cable-
The problems such as bolt action mismatches and the design method of cable bolting is not suitable with coal roadway support.Advanced branch during working face mining
The supporting length that shield distance is longer, supporting intensity is bigger more favourable to roadway maintenance but long will necessarily exist to top plate repeatedly
Support causes roof cracking.China's high seam yield accounts for 45% or so of raw coal total output, is a high seam reserves big country,
It is the exploitation big country of high seam, therefore, the buried high seam working face thin coal pillar gob side entry support issues of km is worth studying.
The content of the invention
To solve the buried high seam working face thin coal pillar gob side entry supporting difficult problem of km, the present invention proposes one kind
Thin coal pillar can effectively control roadway deformation, meet production needs along empty roadway protection processing.
The buried high seam thin coal pillar of km of the present invention is along empty roadway protection processing：
First, after gob side entry is excavated according to design section, first using anchor+band+net support form supporting roof and two
Side, i.e., help first paving in top plate and two and hang one layer of bar-mat reinforcement, then pushed down with steel band, then steel band is anchored at top plate with anchor pole
On；For the arrangement form of above-mentioned steel band to be arranged along drift section, the spacing of steel band is 1000mm, is set on steel band per spacing 900mm
There is a bolthole, anchor pole is arranged as the form of array pitch between 900 × 1000mm；
Second, top plate and two are helped to carry out strengthening supporting
After the completion of anchor+band+net supporting, then plate helps top plate and two to carry out strengthening supporting；
The strengthening supporting of top plate is that anchor cable beam is set between top plate steel band, and anchor cable beam uses the anchoring shape of three rope of a beam
Formula, i.e., be respectively equipped with anchor cable hole in the centre of steel channel beam and both ends, with three anchorage cable anchorings on top plate；
The strengthening supporting in portion of side is：Anchor cable column is set on thin coal pillar lateral wall face, anchor cable column uses the anchoring of three rope of a column
Form, i.e., be respectively equipped with anchor cable eye in the centre of channel column and upper/lower terminal, with three anchorage cable anchorings on lateral wall country rock；Groove
Steel column is arranged between lateral wall steel band, spacing 2m；Upper eye and lower eye use 6.3m anchor cables, and the direction of anchor cable is respectively to top plate
Tilted with bottom plate direction；Middle eye uses 4.3m anchor cables；
3rd, gob side entry advance support
With the exploitation of working face, surpassed in the gob side entry in front of working face using unit supports formula advance timbering
Preceding supporting；Lame advanced supporting length is not less than 60m；Said units brace type advance timbering structure is by a unjointed beam, double columns
Formed with a unsplit bedplate, be needling formula pin shaft joint form between unjointed beam, unsplit bedplate and double columns.
The positive effect of the present invention is, due to the combined supporting form using " anchor band net " plus anchor cable beam column, can effectively to control
Roadway deformation processed, meets the production needs of next working face；Particularly, unit is used in the gob side entry in front of working face
Brace type advance timbering carries out advance support, and deformation of the surrounding rock in tunnel amount is obviously reduced, and compared with using individual prop supporting, two help
Average deformation amount reduces 566mm, and roof to floor convergence reduces 767mm, and pucking amount, which is reduced, reaches 473mm.
Brief description of the drawings
Fig. 1 is embodiment gob side entry supporting sectional drawing；
Fig. 2 is Figure 1A portions enlarged drawing；
Fig. 3 is Figure 1B portions enlarged drawing；
Fig. 4 is unit supports formula advance timbering front view；
Fig. 5 is the side view of Fig. 4.
Marginal data, 1- bar-mat reinforcements, 2- steel bands, 3- anchor poles, 4- anchor rod pallet boards, 5- steel channel beams, 6- anchor cables, 7- channel columns,
8- unjointed beams, the double columns of 9-, 10- unsplit bedplates, 11- hydraulically operated valves.
Embodiment
Referring to the drawings, the buried high seam thin coal pillar of km of the present invention is further illustrated along empty roadway protection processing：
First, as shown in Figure 1, Figure 2, Figure 3 shows, after gob side entry is excavated according to design section, propped up first using " anchor band net "
Shield form supporting roof and two is helped, i.e., helps first paving in top plate and two and hang one layer of bar-mat reinforcement 1, then pushed down with steel band 2, then use anchor
Steel band 2 is anchored on top plate by bar 3；To be arranged along drift section, the spacing of steel band 2 is the arrangement form of above-mentioned steel band 2
1000mm, is equipped with a bolthole per spacing 900mm on steel band 2, anchor pole 3 is arranged as the form of array pitch between 900 × 1000mm；
Anchor pole 3 on top plate uses the MSGLW-600 of 22 × 2500mm of φ without longitudinal rib thread steel type resin anchor, two anchor poles 3 helped
The strong thread steel type resin anchor such as MSGLD-335 using 22 × 2500mm of Φ；Above-mentioned bar-mat reinforcement 1 is the bar-mat reinforcement of φ 6.0mm,
1 mesh specification of bar-mat reinforcement is 100 × 100mm；Steel band 2 on top plate is W-shaped steel band, and two steel bands 2 helped are trapezoidal steel band, is used
Anchor pole 3 need to be equipped with the anchor rod pallet board 4 that specification is 150 × 150 × 10mm when anchoring trapezoidal steel band；When installing anchor pole, using 2 trees
Fat Anchor Agent carries out the extensible bolting.
Second, top plate and two are helped to carry out strengthening supporting
As shown in Figure 1, after the completion of " anchor band net " supporting, then top plate and two are helped to carry out strengthening supporting；
The strengthening supporting of top plate is that anchor cable beam is set between top plate steel band, and anchor cable beam uses the anchoring shape of three rope of a beam
Formula, i.e., be respectively equipped with anchor cable hole in the centre of steel channel beam 5 and both ends, is anchored at three anchor cables 6 on top plate；Above-mentioned anchor cable 6 is
The high-strength nest anchor ropes of 22 × 10300mm of φ, with 3 resin anchoring agents, anchor cable case bay is 2000mm.
The strengthening supporting in portion of side is：Anchor cable column is set on thin coal pillar lateral wall face, anchor cable column uses the anchoring of three rope of a column
Form, i.e., be respectively equipped with anchor cable eye in the centre of channel column 7 and upper/lower terminal, is anchored at three anchor cables 6 on lateral wall country rock；
Channel column 7 is arranged between lateral wall steel band 2, spacing 2m；Upper eye and lower eye use 6.3m anchor cables, the direction of anchor cable respectively to
Top plate and bottom plate direction tilt；Middle eye uses 4.3m anchor cables.
3rd, gob side entry advance support
With the exploitation of working face, surpassed in the gob side entry in front of working face using unit supports formula advance timbering
Preceding supporting；Lame advanced supporting length is not less than 60m；Said units brace type advance timbering structure as shown in Figure 4 and Figure 5, by
Unjointed beam 8, double columns 9, unsplit bedplate 10 and hydraulically operated valve 11 form；Between unjointed beam 8, unsplit bedplate 10 and double columns 9
It is needling formula pin shaft joint form；Unjointed beam 8 is designed and sized to long 1600mm, width 600mm, and effectively shield top length is reachable
2000mm, double columns 9 are more than 200mm, integral bottom using double telescopic posts, bearing height 2150mm-4500mm, column cylinder diameter
10 width of seat are not more than 800mm.
Claims (1)
- A kind of 1. buried empty roadway protection processing in high seam thin coal pillar edge of km, it is characterised in thatFirst, after gob side entry is excavated according to design section, helped first using anchor+band+net support form supporting roof and two, i.e., First paving is helped in top plate and two and hangs one layer of bar-mat reinforcement, is then pushed down with steel band, then steel band is anchored at top plate and two with anchor pole and is helped On；For the arrangement form of above-mentioned steel band to be arranged along drift section, the spacing of steel band be 1000 mm, every 900 mm of spacing on steel band Equipped with a bolthole, anchor pole is set to be arranged as the form of array pitch between 900 × 1000mm；Second, top plate and two are helped to carry out strengthening supportingAfter the completion of anchor+band+net supporting, then top plate and two are helped to carry out strengthening supporting；The strengthening supporting of top plate is that anchor cable beam is set between top plate steel band, and anchor cable beam uses the anchor type of three rope of a beam, i.e., Anchor cable hole is respectively equipped with the centre of steel channel beam and both ends, with three anchorage cable anchorings on top plate；The strengthening supporting in portion of side is：Anchor cable column is set on thin coal pillar lateral wall face, anchor cable column uses the anchor type of three rope of a column, Anchor cable eye is respectively equipped with the centre of channel column and upper/lower terminal, with three anchorage cable anchorings on lateral wall country rock；Channel column cloth Put between lateral wall steel band, spacing 2m；Upper eye and lower eye use 6.3m anchor cables, and the direction of anchor cable is respectively to top plate and bottom plate Direction tilts；Middle eye uses 4.3m anchor cables；3rd, gob side entry advance supportWith the exploitation of working face, propped up in advance using unit supports formula advance timbering in the gob side entry in front of working face Shield；Lame advanced supporting length is not less than 60m；Said units brace type advance timbering is overall by a unjointed beam, double columns and one Base forms, and is needling formula pin shaft joint form between unjointed beam, unsplit bedplate and double columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853822.9A CN105370299B (en) | 2015-11-27 | 2015-11-27 | The buried empty roadway protection processing in high seam thin coal pillar edge of km |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853822.9A CN105370299B (en) | 2015-11-27 | 2015-11-27 | The buried empty roadway protection processing in high seam thin coal pillar edge of km |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370299A CN105370299A (en) | 2016-03-02 |
| CN105370299B true CN105370299B (en) | 2018-04-20 |
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| CN201510853822.9A Active CN105370299B (en) | 2015-11-27 | 2015-11-27 | The buried empty roadway protection processing in high seam thin coal pillar edge of km |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736010A (en) * | 2016-04-15 | 2016-07-06 | 安徽省煤炭科学研究院 | Supporting structure for extremely-narrow coal pillar roadway driving along goaf and construction method of supporting structure |
| CN106089207B (en) * | 2016-06-23 | 2018-06-08 | 大同煤矿集团有限责任公司 | Super high seam working face gob side entry driving thin coal pillar stays equipment, method |
| CN106050282B (en) * | 2016-07-08 | 2018-08-03 | 西安科技大学 | A kind of anchor structure and reinforcement means of gob side entry retaining thin coal pillar |
| CN106894833B (en) * | 2017-01-23 | 2018-04-06 | 山东科技大学 | Gob side entry driving unbalanced support structure and construction method under the unstable overlying strata in deep |
| CN107023311A (en) * | 2017-06-08 | 2017-08-08 | 刘冲 | Roadway repair method below coal column |
| CN108561159A (en) * | 2018-04-10 | 2018-09-21 | 淮南矿业(集团)有限责任公司 | A kind of anti-wall caving suspension device of the high side in coal seam and method for protecting support |
| CN110374645A (en) * | 2019-08-14 | 2019-10-25 | 缪协兴 | A kind of super high seam big cross section thin coal pillar gob side entry Equivalent Support method |
| CN111088989A (en) * | 2019-12-12 | 2020-05-01 | 大同煤矿集团有限责任公司 | Gob-side entry driving surrounding rock control method for fully mechanized caving section of extra-thick coal seam |
| CN113279795B (en) * | 2021-06-29 | 2023-10-31 | 辽宁工程技术大学 | Drilling, anchoring and repairing rapid tunneling construction process method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1026606C (en) * | 1993-07-24 | 1994-11-16 | 徐州矿务局庞庄煤矿 | Gallery supporting method for underground free digging section in coal mine |
| RU2168628C1 (en) * | 2000-03-20 | 2001-06-10 | Шахтинский институт Южно-Российского государственного технического университета (Новочеркасский политехнический институт) | Method of mining of stratified deposits |
| CN103061806B (en) * | 2012-12-28 | 2014-12-17 | 山东科技大学 | Composite roof thin seam fully-mechanized coal mining face gob-side entry retaining method |
| CN104061001B (en) * | 2014-06-25 | 2016-09-07 | 枣庄矿业（集团）有限责任公司滨湖煤矿 | Gob side entry retaining exploitation support process method |
| CN104265295B (en) * | 2014-09-11 | 2017-06-27 | 四川达竹煤电（集团）有限责任公司铁山南煤矿 | Medium Thickness And Medium Slope Angle coal seam prosthetic roadside packing and without coal column gob-side entry retaining method |
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