CN209483345U - A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor - Google Patents
A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor Download PDFInfo
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- CN209483345U CN209483345U CN201920096047.0U CN201920096047U CN209483345U CN 209483345 U CN209483345 U CN 209483345U CN 201920096047 U CN201920096047 U CN 201920096047U CN 209483345 U CN209483345 U CN 209483345U
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Abstract
The utility model discloses a kind of face in steep thick coal seam Multi sectionals to protect lane without coal column staggered floor, it is included in Multi sectional coal seam insole board, coal seam and direct top and base object model, bottom plate is arranged below coal seam, hydraulic support is equipped in section in bottom plate and directly between top, air return lane and transportation roadway are respectively arranged on the left side and the right side in each section, air return lane in each section is connected by working face with transportation roadway, and the transportation roadway of the air return lane of next section and a upper section is arranged using no coal column staggered floor.The layout design is reasonable, and tunnel and coal column deformation failure problem between section caused by stope Stress superposition can not only be effectively relieved；Meanwhile also achieving large-dip-angle long-wall working face high seam and being exploited without coal column or fender, coal recovery rate between upper and lower section is improved, it is loaded to improve lower curtate Stope roof lack of balance, ensure that lower curtate working face safe working.
Description
Technical field
The utility model relates to a kind of underground coal exploitation roadway workface arrangement and placement method, especially high inclination-angle are thick
Under coal seam conditions, coal wall is without coal column staggered floor at lane-shield lane and the method for being caving spoil nature bashing.
Background technique
It is large-inclination-angle coal bed refer to bury inclination angle in 35~55 ° of coal seam, in Xinjiang of China, Sichuan, Gansu, Ningxia, Guizhou
There is preservation etc. major mining area, wherein face in steep thick coal seam occupies larger specific gravity, reaches 60% (Xinjiang, Ningxia in part mining area
Deng).It is well known that existing large-inclination-angle coal bed longwell fully-mechanized mining technology is just gradually tending to be mature.However, inclining greatly
In the Multi sectional recovery process of angle coal seam, inclination upper curtate stope exploits the mechanism of action of lower curtate stope with flat seam bright
Aobvious difference, the migration of Multi sectional face surrounding rock has not only seriously affected section coal pillar with Stress superposition effect and stope drift active workings are stablized
Property, while also changing the loaded feature of lower curtate Stope roof.When especially face in steep thick coal seam is exploited, section coal pillar has more
Big bulk, deformation destroy and migration characteristics are more complicated, have seriously affected stope drift active workings and lower curtate face surrounding rock
Stability.Therefore, it needs a kind of feasible method and is effectively relieved and solves INTERACTION PROBLEMS between section.
Utility model content
The purpose of this utility model is to provide a kind of face in steep thick coal seam coal wall without coal column staggered floor at lane-shield
Rationally, tunnel and coal column deformation failure problem between section caused by stope Stress superposition can be not only effectively relieved in lane, design,
Meanwhile also achieving large-dip-angle long-wall working face high seam and being exploited without coal column or fender, coal provides between improving upper and lower section
The source rate of recovery, it is loaded to improve lower curtate Stope roof lack of balance, ensure that lower curtate working face safe working, solves existing
The problem of technology.
The utility model is realized by following technical proposals.
A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor, is included in Multi sectional coal seam insole board, coal seam and straight
Top and base object model are connect, the bottom plate is arranged below coal seam, and hydraulic branch is equipped in the section in the bottom plate and directly between top
Frame is respectively arranged on the left side and the right side air return lane and transportation roadway in each section, the air return lane in each section by working face with
Transportation roadway is connected, and the transportation roadway of the air return lane of next section and a upper section is arranged using no coal column staggered floor.
For above-mentioned technical proposal, there are also further preferred schemes for the utility model:
Further, coal seam between the air return lane of next section and upper section transportation roadway should be met using no coal column staggered floor arrangement
Thickness, i.e., between tunnel vertical range be greater than 2m.
Further, when section coal seam thickness is in 3.5~4.0m, the transportation roadway of the air return lane of next section and a upper section
Using lower shift arrangement, i.e., the air return lane of next section is placed in the transportation roadway lower right side of a section.
Further, when section coal seam thickness is in 4.0~5.5m, the transportation roadway of the air return lane of next section and a upper section
Using superimposed type arrangement, i.e., the air return lane of next section is placed in immediately below the transportation roadway of a section.
Further, when section coal seam thickness is greater than 5.5m, the air return lane of next section and the transportation roadway of a upper section are adopted
The transportation roadway lower left side of a section is placed in the air return lane of shift arrangement, i.e., next section.
Further, the air return lane of each section uses anchor rete cord flexible support mode.
The utility model has the advantages that due to taking above technical scheme
The utility model proposes a kind of face in steep thick coal seam coal wall without coal column staggered floor at lane-shield lane, design
Rationally, tunnel and coal column deformation failure problem between section caused by stope Stress superposition can not only be effectively relieved；Meanwhile it is also real
Show large-dip-angle long-wall working face high seam to exploit without coal column or fender, improve coal recovery rate between upper and lower section,
It is loaded to improve lower curtate Stope roof lack of balance, ensure that lower curtate working face safe working.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
It does not constitute improper limits to the present invention, in the accompanying drawings:
Fig. 1 (a) is Multi sectional tunnel and working face layout drawing；
Fig. 1 (b) is first section working face mining the second section road layout drawing；
Fig. 1 (c) is the exploitation of the second section and goaf spoil migration Filling Characteristics figure；
Fig. 2 (a)-(c) is staggered floor roadway position figure: Fig. 2 (a) is upper shift arrangement；Fig. 2 (b) is superimposed type arrangement
Mode；Fig. 2 (c) is lower shift arrangement.
In figure: 1-bottom plate；2-coal seams；3-directly push up；4-base object models；5-the first section air return lane；6-the first area
Section transportation roadway；7-the second section air return lane；8-the second section transportation roadway；9-the first section working face；10-the second section；
11-hydraulic supports；12-the first section goaf；13-the second section working face；14-issured coalls；15-third sections
Air return lane；16-the second section goaf；17-broken coal bodies.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
The utility model overall structure may refer to shown in Fig. 1 (a), (b), and it is thick that the utility model proposes a kind of high inclination-angles
Coal seam Multi sectional protects lane without coal column staggered floor, is included in 2 insole board 1 of Multi sectional coal seam, coal seam 2 and directly pushes up 3 and base object model 4,
In, bottom plate 1 is arranged below coal seam 2, hydraulic support 11 is equipped in the section in bottom plate 1 and directly between top 3, on a left side for section
Right two sides are equipped with air return lane and transportation roadway, and the air return lane in each section is connected by working face with transportation roadway, next section
The transportation roadway of air return lane and a upper section is arranged using no coal column staggered floor.
As shown in Fig. 1 (a), during face in steep thick coal seam broadwall, the first section working face 9 is arranged in coal seam
In 2, wherein the first section air return lane 5 arranges that the first section transportation roadway 6 is arranged along directly top 3, working face along seat earth 1
First section working face 9 is connect by inclined lower part region using the method for gradually decreasing mining height with the first section transportation roadway 6.Second
In 10 recovery process of section, transported using the second section of arrangement air return lane 7 identical with the first section and the second section
Defeated lane 8, wherein the position of the second section air return lane 7 depends primarily on the factors such as coal seam, the thickness of roof and floor and intensity, it is combinable
Theoretical calculation, physical analogy and numerically modeling determine to complete design parameter.
Selecting the principle of 7 position of the second section air return lane has:
(1) it reduces as far as possible or cancels section coal pillar, to achieve the purpose that no coal pillar mining；(2) as far as possible by second
Section air return lane 7 is arranged in except the range that roof Stress concentration acts between section or edge, avoids the second section air return lane 7
By the effect of concentrated stress；(3) in the case where objective condition allows, as far as possible using shift cloth on the second section air return lane 7
Mode is set, is in cracks in coal seam band, reduces roadway deformation amount using the buffer function in crack coal seam, while this can also be made
Tunnel is under the protection of the inclination masonry structure in the first section goaf 12, guarantees 7 stability of the second section air return lane,
Reduce maintenance cost.
As shown in Fig. 1 (b), in the second section recovery process, using arrangement second identical with the first section
Section air return lane 7 and the second section transportation roadway 8, wherein the position of the second section air return lane 7 depends primarily on coal seam, roof and floor
The factors such as thickness and intensity are completed design parameter in combination with theoretical calculation, physical analogy and numerically modeling and are determined.
Under conditions of coal seam, the thickness of roof and floor and intensity allow, the position of the second section air return lane 7 can be according to tunnel
Spacing size determines that is, coal seam thickness is greater than 2m between guarantee tunnel.Thickness shift in the case where the coal seam of 3.5~4.0m or so uses
Arrangement, thickness use superimposed type arrangement in 4.0~5.5m, and thickness uses upper shift arrangement side when being greater than 5.5m
Formula.
It is 7 staggered floor lane of the first section transportation roadway 6 and the second section air return lane in the utility model as shown in Fig. 2 (a)-(c)
The road location drawing.In coal seam 2, under conditions of directly the thickness and intensity of top 3 and base object model 4 allow, the position of the second section air return lane 7
Setting can determine according to tunnel spacing size, i.e. coal seam (first the 6 to the second section of section transportation roadway air return lane 7 between guarantee tunnel
Vertical range) thickness be greater than 2m.When thickness 3.5~4.0m or so coal seam use under shift arrangement, such as Fig. 2 (c)
It is shown；Superimposed type arrangement is used when thickness is in 4.0~5.5m, as shown in Fig. 2 (b)；It is used when thickness is greater than 5.5m
Upper shift arrangement, as shown in Fig. 2 (a).
As shown in Fig. 1 (c), it is shown that the exploitation of the second section of the utility model and goaf spoil migration Filling Characteristics.?
During face in steep thick coal seam broadwall, after the first section working face is adopted, as the second section working face was adopted, the secondth area
7 inclination lower section side coal body of section back production lane is mined out, successively withdraws hydraulic support and is put into next section working face, tunnel is lost
Surely, the first section issured coall 14 of inclination upper side destroys immediately, is formed and is crushed coal body 17, and by broken coal body
17 migrations to the second section goaf, 16 top.Meanwhile first section goaf 12 be caving spoil also along the channel to second
Section goaf 16 moves, and is fills up to the second section goaf 16 inclination top range together with broken coal body 17, so that the
Two section goafs, 16 inclined upper, middle part and lower part are destroyed rock stratum filling, thus avoid the second section goaf 16
The lack of balance of top plate fills phenomenon, and the lack of balance for having reduced or eliminated second section working face 13 " bracket-country rock " system is loaded,
Solves the core technology problem in large-inclination-angle coal bed broadwall.
Third, the 4th ... the roadway layout and stages of mining of N section working face are identical as the second section.Fig. 1
(c) show third section air return lane 15 with upper the second section of section transportation roadway 8 without coal column staggered floor arrangement form in.
In order to guarantee that upper curtate goaf spoil is timely and effectively migrated to lower curtate goaf, above-mentioned all stope drift active workings
Anchor rete cord flexible support mode should all be used.Meanwhile in order to prevent without lower curtate air return lane air leakage phenomena in coal pillar mining, reply
Take Anti-air-leakage measure in the tunnel.Pre- pump drainage measure is being carried out rich in mines, Ying Tiqian such as water, gas, is guaranteeing that upper and lower section passes through
Working face safety when logical.
The basic principles and main features, specific method and advantage of the utility model has been shown and described above, the industry
It will be appreciated that the present utility model is not limited to the above embodiments, the description in above embodiments and description is technical staff
Illustrate the principles of the present invention, under the premise of not departing from the spirit and scope of the utility model, the utility model is also had respectively
Kind changes and improvements, these changes and improvements belong to the range of the requires of the utility model protection.The requires of the utility model protection
Range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor, including the bottom plate in Multi sectional coal seam, coal seam and straight
Connect top and base object model, which is characterized in that the bottom plate is arranged below coal seam, in the section in the bottom plate and directly between top
Equipped with hydraulic support, it is respectively arranged on the left side and the right side air return lane and transportation roadway in each section, the air return lane in each section is logical
It crosses working face to be connected with transportation roadway, the transportation roadway of the air return lane of next section and a upper section is arranged using no coal column staggered floor.
2. a kind of face in steep thick coal seam Multi sectional according to claim 1 protects lane without coal column staggered floor, which is characterized in that use
No coal column staggered floor arrangement should meet the thickness in coal seam between the air return lane of next section and upper section transportation roadway, i.e., vertical between tunnel
Distance is greater than 2m.
3. a kind of face in steep thick coal seam Multi sectional according to claim 1 or 2 protects lane without coal column staggered floor, which is characterized in that
When section coal seam thickness is in 3.5~4.0m, the transportation roadway of the air return lane of next section and a upper section is arranged using lower shift
The air return lane of mode, i.e., next section is placed in the transportation roadway lower right side of a section.
4. a kind of face in steep thick coal seam Multi sectional according to claim 1 or 2 protects lane without coal column staggered floor, which is characterized in that
When section coal seam thickness is in 4.0~5.5m, the transportation roadway of the air return lane of next section and a upper section is arranged using superimposed type
Mode, i.e., the air return lane of next section are placed in immediately below the transportation roadway of a section.
5. a kind of face in steep thick coal seam Multi sectional according to claim 1 or 2 protects lane without coal column staggered floor, which is characterized in that
When section coal seam thickness is greater than 5.5m, the transportation roadway of the air return lane of next section and a upper section uses upper shift arrangement side
The air return lane of formula, i.e., next section is placed in the transportation roadway lower left side of a section.
6. a kind of face in steep thick coal seam Multi sectional according to claim 1 protects lane without coal column staggered floor, which is characterized in that each area
The air return lane of section uses anchor rete cord flexible support mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096047.0U CN209483345U (en) | 2019-01-21 | 2019-01-21 | A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096047.0U CN209483345U (en) | 2019-01-21 | 2019-01-21 | A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor |
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| CN209483345U true CN209483345U (en) | 2019-10-11 |
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| CN201920096047.0U Expired - Fee Related CN209483345U (en) | 2019-01-21 | 2019-01-21 | A kind of face in steep thick coal seam Multi sectional protects lane without coal column staggered floor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763822A (en) * | 2019-01-21 | 2019-05-17 | 西安科技大学 | Face in steep thick coal seam Multi sectional is without coal column placement method between coal column staggered floor Hu Xiang and section |
-
2019
- 2019-01-21 CN CN201920096047.0U patent/CN209483345U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763822A (en) * | 2019-01-21 | 2019-05-17 | 西安科技大学 | Face in steep thick coal seam Multi sectional is without coal column placement method between coal column staggered floor Hu Xiang and section |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191011 Termination date: 20220121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |