CN109630050B - Novel working face recovery channel supporting process - Google Patents
Novel working face recovery channel supporting process Download PDFInfo
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- CN109630050B CN109630050B CN201811424878.2A CN201811424878A CN109630050B CN 109630050 B CN109630050 B CN 109630050B CN 201811424878 A CN201811424878 A CN 201811424878A CN 109630050 B CN109630050 B CN 109630050B
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- anchor
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- support
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells operated by fluid means, e.g. actuated by explosion
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D21/008—Anchoring or tensioning means
Abstract
The invention provides a novel supporting process for a recovery channel of a working face, which is used for supporting a coal mine and is further optimized as a scheme, wherein the working face comprises a first area, a second area and a third area which are sequentially connected, the third area is adjacent to a mining stop line of the coal mine, the third area is a recovery channel, a support is arranged at the bottom of the second area, one side of the first area, which is adjacent to the second area, is provided with the support, and the first area is far away from the third area, and the supporting process comprises the following steps: the method comprises the following steps: anchor rod fixing is carried out in three areas of the working surface, and the anchor rod is fixed by using an anchor rod and a wire mesh; step two: fixing an anchor cable in a second area; step three: fixing an anchor cable in a third area, and supporting the bottom of the third area by using an I-shaped steel shed frame; through the steps, the support with strength related to personnel equipment layout and evacuation sequence is formed.
Description
Technical Field
The invention relates to the field of coal mine support, in particular to a novel working face recovery channel support process.
Background
Traditionally, supporting of a final mining hanging net and a recovery channel mainly adopts anchor net supporting. The influence of periodic pressure during the net hanging process is serious, net pulling and top leakage often occur, and the whole construction period is delayed. The limit of the withdrawing of the bracket often appears in the process of recovering the working surface equipment, and the bracket cannot completely pass through the withdrawing channel body, so that the withdrawing work is stopped. When the working face is pressed periodically, the top plate is easy to be subjected to net bags and coal leakage. The top leakage may occur seriously, which causes the blockage of the recovery channel and seriously affects the withdrawal safety.
Particularly, on a working face with large pressure and high frequency on a mine face, the traditional anchor net support needs high cost, and the problems of net bags, coal leakage, rib spalling and the like on a coal wall of a roof cannot be effectively solved. Meanwhile, after the end mining is finished, rapid equipment recovery is needed, and accidents are reduced.
In view of the above, a novel working face recycling channel supporting process is provided to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a novel supporting process for a recovery channel of a working face, which optimizes process parameters of each supporting process through reasonable combination of multiple reinforcing and supporting modes, thereby realizing saving of supporting material cost and supporting time, and realizing cost reduction and efficiency improvement.
The technology adopted by the invention is as follows:
the utility model provides a novel technology is strutted to working face recovery channel for the colliery is strutted, and as the further optimization of scheme, the working face is including the first region, the second region and the third region that connect gradually, and the third region is adjacent with stopping the mining line in colliery, and the third region is recovery channel, and the regional bottom of second is equipped with the support, and first region is equipped with the support with the regional adjacent one side of second, and the third region is kept away from to first region, includes following step:
the method comprises the following steps: anchor rod fixing is carried out in three areas of the working surface, and the anchor rod is fixed by using an anchor rod and a wire mesh;
step two: fixing an anchor cable in a second area;
step three: fixing an anchor cable in a third area, and supporting the bottom of the third area by using an I-shaped steel shed frame;
through the steps, the support with strength related to personnel equipment layout and evacuation sequence is formed.
Through the scheme, important areas and areas evacuated last are processed in an important mode, the areas evacuated first are screened by anchor rods, supporting is carried out through a combined reinforcing mode, and construction time and labor intensity are shortened.
As further optimization of the scheme, the first step comprises the following process steps:
1.1: fixing a first row of anchor rods at the edge of the first area, wherein the distance between the anchor rods is less than or equal to 0.8 m;
1.2: after the first row in the first area, fixing a plurality of rows of anchor rods, wherein the row spacing of the anchor rods is less than or equal to 1.75 multiplied by 0.8 m;
1.3: fixing a plurality of rows of anchor rods in the second area, wherein the row distance of the anchor rods is less than or equal to 0.875 multiplied by 0.8 m;
1.4: and fixing a plurality of rows of anchor rods in a third area, wherein the row distance of the anchor rods is less than or equal to 0.8 multiplied by 0.8 m.
Through carrying out comprehensive stock fixed support on whole working face, wherein carry out row's support that the distance differs in proper order according to the priority of the recovery in each region, wherein withdraw at first in the first region, only need hang the net can, the equipment of exploitation is equipped with below the second region, itself is equipped with the support and supports, adopts the anchor rope to further consolidate the support, the third region is the recovery passageway, equipment in first region and second region, the support is withdrawn to the third region, the support that here needs the highest intensity, adopt the anchor rope to consolidate the back and use the I-steel rack to carry out further support.
As further optimization of the scheme, the step two comprises the following process steps:
2.1: and fixing a plurality of rows of anchor cables in the second area, wherein the row distance of the anchor cables is less than or equal to 0.5 multiplied by 0.8 m.
As a further optimization of the scheme, the step three comprises the following process steps:
3.1: fixing a plurality of rows of anchor cables in a third area, wherein the row distance of the anchor cables is less than or equal to 0.5 multiplied by 1 m;
3.2: and an I-shaped steel shed frame is arranged at the bottom of the anchor cable, the I-shaped steel is vertical to the anchor cable, and a single hydraulic column support is arranged at the bottom of the I-shaped steel shed frame.
Due to the supporting effect of the I-shaped frame shed frame, the row spacing of the anchor cables in the third area can be properly increased, the cost is reasonably controlled, and the anchor cables with lower row spacing are needed to be reinforced in the second area relative to the third area, so that accidents are prevented.
As further optimization of the scheme, the anchor cable is a three-hole combined anchor cable.
As a further optimization of the scheme, the method also comprises the following steps: and (5) fixing the anchor cable in the transportation crossheading, and arranging an I-shaped steel shed frame at the bottom of the anchor cable. All subsequent equipment and personnel are evacuated through the transportation gate way through the recovery channel, so the strength grade of the support of the transportation gate way is equivalent to that of the third area.
As a further optimization of the scheme, the method also comprises the following steps: i-steel shed frame supporting is carried out on the return air crossheading, a plurality of wood piles are arranged on the I-steel bottom plate, and the distance between the wood piles is smaller than or equal to 1 m. The return air crossheading is free from passing through equipment and is supported by I-shaped steel, so that ventilation is guaranteed.
Compared with the prior art, the invention has the beneficial effects that:
by adopting the novel working face recovery channel supporting process, the construction period and the labor intensity of workers are reduced, and the investment in manpower and material resources is reduced. Meanwhile, the top plate of the recovery channel is more effectively supported, and necessary conditions are created for the safe and orderly recovery work in the later period. The recovery work is integrally advanced, and a large amount of time and labor cost are saved.
Drawings
FIG. 1 is a schematic working surface diagram of a novel supporting process for a working surface recycling channel provided by the invention;
in the figure: 1. a first region; 2. a second region; 3. a third region; 4. a transportation crossheading; 5. returning air to the crossheading; 6. stopping the mining line; 7. an anchor rod; 8. an anchor cable; 9. h-shaped steel canopy frames; 10. and (6) stacking the wood.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1:
referring to the attached drawing 1, a novel working face recovery channel supporting process is used for coal mine supporting, and as further optimization of a scheme, the working face comprises a first area 1, a second area 2 and a third area 3 which are sequentially connected, the third area 3 is adjacent to a stopping mining line 6 of a coal mine, the third area 3 is a recovery channel, a support is arranged at the bottom of the second area 2, a support is arranged on one side of the first area 1 adjacent to the second area 2, and the third area 3 is far away from the first area 1, and the process comprises the following steps:
the method comprises the following steps: fixing anchor rods 7 in three areas of the working surface, wherein the anchor rods 7 are fixed by using the anchor rods 7 and the wire netting;
step two: fixing an anchor cable 8 in the second area 2;
step three: an anchor cable 8 is fixed in the third area 3, and the bottom of the third area is supported by an I-shaped steel shed frame 9;
through the steps, the support with strength related to personnel equipment layout and evacuation sequence is formed.
Through the scheme, important areas and areas evacuated last are processed in an important mode, the areas evacuated first are screened by the anchor rods 7, supporting is carried out through a combined reinforcing mode, and construction time and labor intensity are shortened.
In the embodiment, the row pitch of the anchor rods 7 is reduced from the first area 1 to the third area 3, the first area 1 only needs to be hung with a net to hold objects falling from the top, the bracket of the first area 1 needs to be withdrawn into the second area 2, the top of the first area 1 can collapse after the withdrawal, although the bottom of the second region 2 is supported by the brackets, after the top of the first region 1 collapses, the top of the second region 2 is more unstable, is more stressed, so the supporting effect is enhanced by fixing the anchor rods 7, and similarly, after the equipment and the brackets in the second area 2 are withdrawn to the third area 3, third region 3 pressurized is bigger, needs the higher one-level to strut, need carry out anchor rope 8 and consolidate the back, needs extra I-steel rack 9 to further strut, and protective equipment such as I-steel rack 9 bottom cooperation monomer hydraulic pressure post plays the prevention and support effect.
When the equipment is evacuated, the equipment is evacuated from the left side or the right side of the first area 1 in parallel, the equipment is sequentially evacuated to the position below the second area 2, at the moment, the top of the support evacuated from the first area 1 begins to collapse, the support is evacuated from the position where the top of the support collapses, domino type is formed, the top collapses gradually, and the risk of overall collapse is prevented. And similarly, the supports and the equipment in the second area 2 are sequentially horizontally evacuated to the third area 3, and then the supports and the equipment are horizontally and gradually evacuated to the transportation gate 4 in the third area 3 to complete the overall evacuation of the working face.
Example 2:
referring to fig. 1, the difference between this embodiment and embodiment 1 is that the process steps in embodiment 1 are subdivided, and the supporting scheme of each area is optimized in detail.
In this embodiment, the first step includes the following process steps:
1.1: fixing a first row of anchor rods 7 at the edge of the first area 1, wherein the distance between the anchor rods 7 is less than or equal to 0.8 m;
1.2: fixing rows of anchor rods 7 after the first row in the first area 1, wherein the row pitch of the anchor rods 7 is less than or equal to 1.75 multiplied by 0.8 m;
1.3: fixing a plurality of rows of anchor rods 7 in the second area 2, wherein the row distance of the anchor rods 7 is less than or equal to 0.875 multiplied by 0.8 m;
1.4: several rows of anchor rods 7 are fixed in the third area 3, and the row pitch of the anchor rods 7 is less than or equal to 0.8 multiplied by 0.8 m.
As further optimization of the scheme, the step two comprises the following process steps:
2.1: and fixing a plurality of rows of anchor cables 8 in the second area 2, wherein the row distance of the anchor cables 8 is less than or equal to 0.5 multiplied by 0.8 m.
As a further optimization of the scheme, the step three comprises the following process steps:
3.1: fixing a plurality of rows of anchor cables 8 in the third area 3, wherein the row spacing of the anchor cables 8 is less than or equal to 0.5 multiplied by 1 m;
3.2: an I-shaped steel canopy frame 9 is arranged at the bottom of the anchor cable 8, the I-shaped steel is perpendicular to the anchor cable 8, and a single hydraulic column support is arranged at the bottom of the I-shaped steel canopy frame 9.
Through carrying out comprehensive stock 7 fixed support on whole working face, wherein according to the successively according to the recovery in each region strut that row's distance differs in proper order, wherein first region 1 withdraws earlier, only need carry on hang net can, the equipment of exploitation is equipped with below the second region 2, itself is equipped with the support and supports, adopt anchor rope 8 to further consolidate and strut, third region 3 is the recovery passageway, equipment at first region 1 and second region 2, the support is evacuated third region 3, the support that here needs the highest intensity, use I-steel rack 9 to further strut after adopting anchor rope 8 to consolidate.
Due to the supporting effect of the I-shaped frame shed frame, the row spacing of the anchor cables 8 in the third area 3 can be properly increased, the cost is reasonably controlled, and the second area 2 needs to be reinforced by the anchor cables 8 with lower row spacing relative to the third area 3, so that accidents are prevented.
In this embodiment, the anchor cable 8 is a three-hole combined anchor cable 8 with a length of 3 m.
Through the process parameters of the embodiment, the support strength and recovery sequence of each area and the support strength hook at the bottom are realized, excessive support in uncritical areas can not be caused, the important incomplete support is ensured, waste is not caused, and the safety is also ensured.
Example 3:
referring to fig. 1, the difference between this embodiment and embodiment 2 is that a supporting process of a transport gateway 4 and a return air gateway 5 on both sides of a working face is added.
In this embodiment, the method further includes the following step: and (4) fixing an anchor cable 8 in the transportation crossheading 4, and arranging an I-shaped steel shed frame 9 at the bottom of the anchor cable 8. All subsequent equipment and personnel are evacuated through the transportation gate 4 through the recovery passage, so that the strength grade of the support of the transportation gate 4 is equivalent to that of the third area 3.
As a further optimization of the scheme, the method also comprises the following steps: i-shaped steel pergola 9 is supported in the return air crossheading 5, a plurality of wood piles 10 are arranged on the I-shaped steel bottom plate, and the distance between the wood piles 10 is less than or equal to 1 m.
In the recovery process, the transportation crossheading 4 is used as the last evacuation support, I-shaped steel and other equipment of the return air crossheading 5 are recovered to the third area 3, I-shaped steel at the top of equipment below the third area 3 and the top of the equipment are recovered to the transportation crossheading 4, and equipment and I-shaped steel in the third area 3 are recovered to the transportation crossheading 4 from right to left in the figure; then the transportation gate way 4 is recovered from top to bottom, and the whole recovery work of the working face is completed.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. The utility model provides a novel technology is strutted to working face recovery channel for the colliery is strutted, a serial communication port, the working face is including first region (1), second region (2) and third region (3) that connect gradually, third region (3) with stopping of colliery and adopting line (6) adjacent, third region (3) are recovery channel, second region (2) bottom is equipped with the support, first region (1) with the adjacent one side of second region (2) is equipped with the support, first region (1) is kept away from third region (3), including following step:
the method comprises the following steps: anchor rod (7) are fixed in three regions of working face, and anchor rod (7) are fixed to use anchor rod (7) and wire netting, specifically include:
fixing a first row of anchor rods (7) at the edge of the first area (1), wherein the distance between the anchor rods (7) is less than or equal to 0.8 m; and after the first row in the first area (1), fixing a plurality of rows of anchor rods (7), wherein the row pitch of the anchor rods (7) is less than or equal to 1.75 multiplied by 0.8 m;
fixing a plurality of rows of anchor rods (7) in the second area (2), wherein the row distance of the anchor rods (7) is less than or equal to 0.875 multiplied by 0.8 m;
fixing a plurality of rows of anchor rods (7) in the third area (3), wherein the row distance of the anchor rods (7) is less than or equal to 0.8 multiplied by 0.8 m;
step two: fixing an anchor cable (8) in the second region (2), specifically comprising:
fixing a plurality of rows of anchor cables (8) in the second area (2), wherein the row distance of the anchor cables (8) is less than or equal to 0.5 multiplied by 0.8 m;
step three: anchor rope (8) are fixed in third region (3), and the bottom adopts I-steel rack (9) to strut, specifically includes:
fixing a plurality of rows of anchor cables (8) in the third area (3), wherein the row distance of the anchor cables (8) is less than or equal to 0.5 multiplied by 1 m;
an I-shaped steel shed frame (9) is arranged at the bottom of the anchor cable (8), the I-shaped steel is perpendicular to the anchor cable (8), and a single hydraulic column support is arranged at the bottom of the I-shaped steel shed frame (9);
step four: fixing an anchor cable (8) in the transportation crossheading (4), arranging an I-shaped steel shed frame (9) at the bottom of the anchor cable (8), wherein the I-shaped steel is vertical to the anchor cable (8);
step five: i-shaped steel shed frames (9) are supported in the return air crossheading (5), a plurality of wood stacks (10) are arranged on an I-shaped steel bottom plate, and the distance between the wood stacks (10) is less than or equal to 1 m;
through the steps, the support with strength related to personnel equipment layout and evacuation sequence is formed.
2. The new face recovery tunnel support process according to claim 1, wherein the anchor line (8) is a three-hole combination anchor line (8).
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| CN201811424878.2A CN109630050B (en) | 2018-11-27 | 2018-11-27 | Novel working face recovery channel supporting process |
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| CN201811424878.2A CN109630050B (en) | 2018-11-27 | 2018-11-27 | Novel working face recovery channel supporting process |
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| CN109630050B true CN109630050B (en) | 2021-08-17 |
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| CN110821537B (en) * | 2019-11-29 | 2021-02-09 | 淮矿西部煤矿投资管理有限公司 | Support method for fully-mechanized coal mining face pre-digging single-withdrawing channel |
| CN115234213A (en) * | 2022-08-26 | 2022-10-25 | 国家能源集团宁夏煤业有限责任公司 | Stress treatment method for pre-digging withdrawal channel |
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