CN205400744U - Utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects - Google Patents
Utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects Download PDFInfo
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- CN205400744U CN205400744U CN201521121132.6U CN201521121132U CN205400744U CN 205400744 U CN205400744 U CN 205400744U CN 201521121132 U CN201521121132 U CN 201521121132U CN 205400744 U CN205400744 U CN 205400744U
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Abstract
The utility model discloses an utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects, the utility model discloses a facility and crest truncation release facility are strutted in enhancement in the coal mining tunnel. Strengthen strutting the facility and include three rows of high pillars in the coal mining tunnel, with two rows of stocks of tunnel lying, and two rows of anchor ropes of top of roadway board to and group's distribution has three rows of stocks on the tunnel. The distribution of high pillar is group, tunnel lying and coal mining tunnel middle part on the tunnel. Crest truncation release facility sets up department of group on the tunnel, comprises the big gun hole on short stanchion, support column, waste rock baffle and the collecting space area roof. The utility model discloses a no road side packing gob entry has and can eliminate the obsturator to the stress concentration in the neighbouring coal seam of lower floor, reduces lower floor's coal exploitation difficulty, simplifies a great deal of advantage such as construction process. This technique of adoption back, gob entry roof deflection is less, and construction process is simple, is favorable to the high -efficient back production of safety of girdle.
Description
Technical field
This utility model relates to a kind of coal mining facility, the supporting facility in especially a kind of Qie Dingyuhu lane when closely inclined seam.
Background technology
In coal mining process, for one tunnel of few driving, adopting certain technological means that the tunnel outputed of a upper section is left for next section and use, this technology is referred to as gob side entry retaining.Original technological means is to retain coal column along edge, goaf tunnel is supported；But reserved coal pillar can waste a part of coal resources.In order to not waste coal resources, solution is to adopt suspension device to replace coal column, by whole for coal extraction, adopts suspension device to replace coal column to carry out staying the method in lane to be called without coal column gob side entry retaining (or abbreviation: gob side entry retaining).Gob side entry retaining without coal column can Resource recovery to greatest extent, it is to avoid coal body loses.
A kind of method that work stone is gob side entry retaining is built by laying bricks or stones by lane, in coal mining industry, large area uses at present, but, closely when inclined seam, build by laying bricks or stones by lane the gob side entry retaining mode of work stone more and more occur the other coal body in lane and build block pressure break, external drum by laying bricks or stones, wall caving amount is big, end distension is serious etc. has a strong impact on the Nonlinear Large Deformation phenomenon of gob side entry secondary multiplexing, therefore, build the left road way reality of work stone by laying bricks or stones and can not meet that the coal seam under this coal seam conditions is safe efficient, the needs of the economic exploitation.
Cutting top release edge air gallery technology is a kind of new edge air gallery technology, this technology adopts bilateral cumulative energy Pre-splitting Blasting Technique that lateral for gob side entry top board is carried out Advance presplitting destruction, change the structure of overhanging roof overburden rock mass during along Kong Cheng lane, under Stope roof periodic weighting effect, overhanging top board cuts completion lane along pre-broken face under burden pressure squeezing action, one side side in self-assembling formation tunnel, thus completing gob side entry retaining.This technology can eliminate the effect that above contiguous work surface coal body, stress is concentrated, there is reduction digging ratio, improve production efficiency, reduce the wasting of resources, avoid Yin Liu set the coal building work stone by laying bricks or stones by Mei Dunji lane and cause mix with gas prominent, end distension prominent, roadway deformation serious, needs the phenomenons such as repair for 2nd time, belongs to the mining novel technology of a kind of safe and efficient economic science.
But before cutting top, under the high pressure situation of goaf top plate, and cut how to ensure tunnel safety under the larger vibration in the process of top, it is prevented that the technology of roadway deformation is also immature at present.Especially have that middle inclination, top board be soft, balk and overlying coal seam be apart from the coal mining of the feature such as near when, it is subject to the impact of overlying Seam Mining and this layer of coal mining influence, surrouding rock stress effect is obvious, significantly exceed rock uniaxiality strength, caused gob side entry to stay and set and maintenance process deform extremely serious.
Therefore, if the safety support problem cut before top and cut in the process of top can effectively be solved, the gob side entry retaining under above-mentioned coal seam conditions can just be completed well.
Utility model content
In order to solve under closely inclined seam mining conditions cut top before and the safety support problem of cutting in the process of top, this utility model provides and utilizes the supporting construction realizing short range seam mining along Kong Hu lane.
Strengthening supporting facility of the present utility model includes two parts, is provided in the strengthening supporting facility in coal cutting roadway 12 respectively, cutting top release facility with being arranged on, cut top release facility and be positioned close on tunnel place of side in goaf 1.
Described strengthening supporting facility is:
In coal cutting roadway 12, it is provided with the three high pillars 11 of row, is separately positioned on tunnel place of side, in the middle part of coal cutting roadway, and place of side under tunnel.On tunnel, 2500～3500mm helped by the high pillar at place of side on tunnel, and 1200mm～1400mm helped by the high pillar in the middle part of coal cutting roadway on tunnel, and under tunnel, 2500～3500mm helped by the high pillar at place of side under tunnel.High pillar upright support is between roadway floor 10 and back 7.Between high pillar top and back, crossbeam 8 is set.
Under tunnel, side is provided with two row's anchor poles 13, squeezes into middle part and the bottom of side under tunnel respectively.
Back is provided with two row's anchor cables 3, and wherein a row squeezes into the middle part of back, another row side on tunnel.
Tunnel is helped distribution have three row's anchor poles.
Described top release facility of cutting is made up of sprag 6, support column 4, spoil baffle plate 5.Support column is I-steel, and is supported between goaf top plate and gob floor, arranges backing plate between support column top and goaf top plate.At support column, spoil baffle plate 5 is set by goaf side, at support column, sprag 6 is set by coal cutting roadway side.Being provided with big gun hole 2 in the rock mass of goaf top plate, big gun hole is from spoil baffle plate 10mm～150mm, and tilts to direction, goaf.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, help the anchor pole 13 at middle part to be horizontally disposed with under tunnel；The downward-sloping setting of anchor pole 13 of Xia Bang bottom, tunnel.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, it is specially, on tunnel, three row's anchor poles 13 of side squeeze into the top of side, middle part and bottom on tunnel respectively, the downward-sloping setting of anchor pole of Shang Bang bottom, tunnel, on tunnel, the top of side is horizontally disposed with the anchor pole 13 at middle part.
Utilizing the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, described backing plate is plank, spoil baffle plate 5 is cement plate.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, described spoil baffle plate 5 rolls tiltedly to coal cutting roadway with support column 4.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, described high pillar 11 is hydraulic prop with sprag 6.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, described anchor cable length is 5500mm；Anchor pole 13 length is 1800mm.
Utilize the supporting construction realizing short range seam mining along Kong Hu lane as above, specifically, described big gun hole 2 degree of depth is 3500mm.
Beneficial effect:
Adopt this utility model that tunnel, goaf is carried out supporting, it is achieved that without roadside packing gob side entry retaining, have and can eliminate the obturator stress to lower floor's adjacent coal seam and concentrates, reduce lower floor's coal mining difficulty, the plurality of advantages such as the alleviation relationn of excavation and recovering, simplification construction technology.After adopting this technology, gob side entry retaining roof deformation amount is less, and construction technology is simple, and speed of application is fast, thus being conducive to the safe and efficient back production of girdle.
After adopting this technology, roadway deformation amount is only small, and after stabilization sub stage 40m is pressed in ore deposit, head-room is basically unchanged, and illustrates to cut top release presplit blasting effect better.
In this technology implementation process, the cement backboard of employing is very low cost, and I-steel can adopt waste and old steel rail to make, after roadway deformation is stable, hydraulic prop recyclable again with.Therefore, the cost of whole gob side entry retaining is low-down, is conducive to saving production cost.
Accompanying drawing explanation
Fig. 1 this utility model structural representation.
Fig. 2 is support column of the present utility model and spoil baffle plate composition structural representation.
Detailed description of the invention
This utility model is arranged under the mining conditions of closely inclined seam, so-called closely referring to waits to exploit in another coal seam arranged below of this working seam, if seam roof does not have management and control good, in gob side entry retaining process, the pressure of top board is excessive, can affect the exploitation in coal seam, lower section.It is the goaf 1 just exploited in the left side of coal cutting roadway 12, in next exploiting field 9 that the right side of coal cutting roadway is this coal seam.The purpose of gob side entry retaining is: using coal cutting roadway 12 as this exploiting field machine lane use after, the air way in next exploiting field 9 can be given over to, be aerated use.Therefore, in concrete recovery process, it is necessary to performing roadway support, safety completes gob side entry retaining.
As it is shown in figure 1, the supporting facility of the present embodiment includes two parts, it is provided in the strengthening supporting facility in coal cutting roadway 12 respectively and pushes up release facility with being arranged on cutting in goaf 1.
Strengthening supporting facility is:
Being provided with the three high pillars 11 of row in coal cutting roadway 12, high pillar upright support is between roadway floor 10 and back 7；Arranging crossbeam 8 between high pillar top and back, crossbeam is girder steel or wooden frame, the present embodiment selection wooden frame, because when back has micro-deformation, wooden frame has certain cushioning effect.High pillar 11 is hydraulic prop, high pillar is distributed in coal cutting roadway, 300mm helped by the high pillar being arranged under tunnel place of side under tunnel, is arranged on the high pillar in the middle part of coal cutting roadway and helps 1300mm on tunnel, and 300mm helped by the high pillar being arranged on tunnel place of side on tunnel.The high pillar array pitch being arranged on tunnel place of side is 800mm, and so-called array pitch refers to: along the spacing of coal cutting roadway length direction.Be arranged under tunnel helping the high pillar array pitch with tunnel center is 1600mm.
Under tunnel, side is provided with two row's anchor poles 13, and anchor pole array pitch is not preferably greater than 3000mm, and squeezes into middle part and the bottom of side under tunnel respectively.The anchor pole 13 helping middle part under tunnel is horizontally disposed with, and the anchor pole of bottom is downward-sloping.
Helping distribution to have three row's anchor poles 13 on tunnel, anchor pole array pitch is not preferably greater than 1500mm, and squeezes into top, middle part and the bottom helped on tunnel, the downward-sloping setting of anchor pole of Shang Bang bottom, tunnel respectively, and the anchor pole at top and middle part is horizontally disposed with.
Above-mentioned rock-bolt length is 1800mm.
Back is provided with two row's anchor cables 3, and wherein a row squeezes into the middle part of back, and array pitch is 2700mm；Another row side, array pitch 1450mm on tunnel；Above-mentioned anchor cable length is 5500mm.
As shown in Figure 1 and Figure 2, cutting top release facility and be positioned close on tunnel place of side, its structure includes sprag 6, support column 4, spoil baffle plate 5；Sprag 6 is hydraulic prop, and spoil baffle plate 5 is cement plate.Support column is I-steel, and is supported between goaf top plate and gob floor, arranges backing plate between support column top and goaf top plate, and backing plate is plank；At support column, spoil baffle plate 5 is set by goaf side, at support column, sprag 6 is set by coal cutting roadway side.
Being provided with big gun hole 2 on goaf top plate, big gun hole 2 degree of depth is 3500mm, and big gun hole is from spoil baffle plate 10mm～150mm, and big gun hole tilts to direction, goaf in rock mass, and namely level inclination 65 °～75 ° is squeezed in goaf top plate rock mass.
Spoil baffle plate 5 rolls tiltedly to coal cutting roadway with support column 4, and angle of inclination is between 2～5 °.
The array pitch 800mm of sprag, cement row's plate is that successional splicing is built, and the array pitch of support column is 400mm.Support column adopts waste and old steel rail to be made.
The side of building of the present utility model process is: before coal-face does not arrive, and has first set up the anchor cable of high pillar, back in coal cutting roadway, the anchor pole of side under side, tunnel on tunnel.At coal-face through later, output big gun hole immediately, load explosive, and put up cement backboard, support column 4(waste and old steel rail), sprag.After coal-face leaves 40 meters, blow out, cut top release.After the spoil of goaf top plate is caving, cement backboard and support column stop, it is prevented that scurry in coal cutting roadway.After cutting top release completing, it is possible to remove all of hydraulic prop (high pillar, sprag).
Above-mentioned for exemplary illustration, do not represent protection domain during this utility model.
Claims (8)
1. utilize the supporting construction realizing short range seam mining along Kong Hu lane, by the strengthening supporting facility being arranged in coal cutting roadway (12), constitute with the top release facility cut being arranged in goaf (1), cut top release facility and be positioned close on tunnel place of side；It is characterized in that,
Described strengthening supporting facility is:
In coal cutting roadway (12), it is provided with the high pillar of three row (11), is separately positioned on tunnel place of side, in the middle part of coal cutting roadway, and place of side under tunnel；On tunnel, 2500～3500mm helped by the high pillar at place of side on tunnel, and 1200mm～1400mm helped by the high pillar in the middle part of coal cutting roadway on tunnel, and under tunnel, 2500～3500mm helped by the high pillar at place of side under tunnel；High pillar upright support is between roadway floor (10) and back (7)；Crossbeam (8) is set between high pillar top and back；
Under tunnel, side is provided with two row's anchor poles (13), squeezes into middle part and the bottom of side under tunnel respectively；
Back is provided with two row's anchor cables (3), and wherein a row squeezes into the middle part of back, another row side on tunnel；
Tunnel is helped distribution have three row's anchor poles (13)；
Described top release facility of cutting is made up of sprag (6), support column (4), spoil baffle plate (5)；Support column is I-steel, and is supported between goaf top plate and gob floor, arranges backing plate between support column top and goaf top plate；At support column, spoil baffle plate (5) is set by goaf side, at support column, sprag (6) is set by coal cutting roadway side；Being provided with big gun hole (2) in the rock mass of goaf top plate, big gun hole is from spoil baffle plate 10mm～150mm, and tilts to direction, goaf.
2. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that under tunnel, help the anchor pole at middle part to be horizontally disposed with；Anchor pole (13) the downward-sloping setting of Xia Bang bottom, tunnel.
3. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterized in that, on tunnel, three row's anchor poles of side squeeze into the top of side, middle part and bottom on tunnel respectively, the downward-sloping setting of anchor pole of Shang Bang bottom, tunnel, on tunnel, the top of side is horizontally disposed with the anchor pole at middle part.
4. utilizing the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that described backing plate is plank, spoil baffle plate (5) is cement plate.
5. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that described spoil baffle plate (5) rolls tiltedly to coal cutting roadway with support column (4).
6. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that described high pillar (11) and sprag (6) are hydraulic prop.
7. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that described anchor cable length is 5500mm；Rock-bolt length is 1800mm.
8. utilize the supporting construction realizing short range seam mining along Kong Hu lane as claimed in claim 1, it is characterised in that described big gun hole (2) degree of depth is 3500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521121132.6U CN205400744U (en) | 2015-12-31 | 2015-12-31 | Utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521121132.6U CN205400744U (en) | 2015-12-31 | 2015-12-31 | Utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects |
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|---|---|
| CN205400744U true CN205400744U (en) | 2016-07-27 |
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| CN201521121132.6U Expired - Fee Related CN205400744U (en) | 2015-12-31 | 2015-12-31 | Utilize along empty supporting construction who realizes closely coal seam exploitation in lane that protects |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091091A (en) * | 2017-07-03 | 2017-08-25 | 湖南科技大学 | A kind of steeply-inclined seam mining gob-side entry retaining method of prefabricated arc support |
| CN108049896A (en) * | 2017-12-19 | 2018-05-18 | 河南力行科创矿山技术开发有限公司 | A kind of fully mechanized coal face gob-side entry retaining method |
| CN110029994A (en) * | 2019-04-15 | 2019-07-19 | 中国矿业大学 | A kind of contiguous seams are to adopting to pick mining induced stress control method |
-
2015
- 2015-12-31 CN CN201521121132.6U patent/CN205400744U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091091A (en) * | 2017-07-03 | 2017-08-25 | 湖南科技大学 | A kind of steeply-inclined seam mining gob-side entry retaining method of prefabricated arc support |
| CN108049896A (en) * | 2017-12-19 | 2018-05-18 | 河南力行科创矿山技术开发有限公司 | A kind of fully mechanized coal face gob-side entry retaining method |
| CN110029994A (en) * | 2019-04-15 | 2019-07-19 | 中国矿业大学 | A kind of contiguous seams are to adopting to pick mining induced stress control method |
| CN110029994B (en) * | 2019-04-15 | 2020-02-21 | 中国矿业大学 | Opposite-mining opposite-excavation mining stress control method for close-distance coal seam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Wensheng Inventor after: Liu Xiaoqiang Inventor after: Zhang Guofeng Inventor after: Zhang Shiyuan Inventor before: Liu Xiaoqiang Inventor before: Zhang Guofeng Inventor before: Zhang Shiyuan |
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| COR | Change of bibliographic data | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20161231 |