CN111764900B - Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method - Google Patents
Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method Download PDFInfo
- Publication number
- CN111764900B CN111764900B CN202010585767.0A CN202010585767A CN111764900B CN 111764900 B CN111764900 B CN 111764900B CN 202010585767 A CN202010585767 A CN 202010585767A CN 111764900 B CN111764900 B CN 111764900B
- Authority
- CN
- China
- Prior art keywords
- roadway
- working face
- mining
- intersection point
- lane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005065 mining Methods 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000002023 wood Substances 0.000 claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- 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
-
- 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
- E21D15/02—Non-telescopic props
-
- 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
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Remote Sensing (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides a construction method for a 110-method working face to push and mining through a vertical intersection point of an interconnecting roadway, and relates to the technical field of coal mining. The method comprises the following steps: A. before the working face is pushed to a position less than 150m away from the upper connecting lane, arranging constant-resistance anchor cables in the lower connecting lane at the interchange point and matching with a channel steel supporting top plate and two sides; B. paving rails in the upper connecting lane, connecting and fixing the rails through anchor rods, connecting the rails and anchor cables through chains, and driving wood piles in the upper connecting lane at the intersection positions; C. a plurality of wood piles are arranged in the range of 20m of the interchange point along the descending direction of the upper roadway; D. when the working face is pushed to a position 2m away from the vertical intersection point, the working face adopts a large-proportion mining tail for mining, and the working face quickly passes through the vertical intersection point. The method can complete the reinforced support of the top plate and two sides of the intersection position of the working face and the maintenance of the false roof, effectively avoid the roof falling caused by the ultrahigh tunnel, and realize high-efficiency mining under the condition of not influencing the production of the working face.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a construction method for pushing and mining a vertical intersection point of a connecting roadway on a working face in a 110 construction method.
Background
In the 110 construction method in coal mining, namely '1 working face, 1 roadway and 0 coal pillar', a basic top of an overlying rock stratum can be pulled through a constant-resistance anchor cable, a roof is cut to form a crack when an energy-gathered blasting device pre-cracks the roof, the roof is cut along the crack when the roof is pre-cracked when a stope is pressed periodically, and the roadway behind the roadway is automatically formed. The interchange roadway arrangement is a common method for mine roadway tunneling, and in the coal mining process, a crossheading roadway and a connection roadway are in lap joint, wherein the crossheading roadway is generally arranged at the lower layer, and the connection roadway is arranged at the lower layer. In the working face extraction, the working face needs to pass through the vertical intersection point of the connecting roadway, top rocks which appear when the working face is pushed to the position drop to cause a support empty roof to cause roof collapse accidents, particularly, the working face is pushed to the position to pass through the interchange point in the 110 construction method, and the roof collapse is caused due to the fact that the roadway is ultrahigh, so that the construction method that the working face is pushed to pass through the vertical intersection point of the connecting roadway in the 110 construction method needs to be further improved.
Disclosure of Invention
The invention provides a construction method for a 110 construction method that a working face passes through an intersection point of connecting roadways in a pushing mode, and the construction method is used for solving the problem that a top plate falls off due to the fact that roadways are ultrahigh when the working face passes through the intersection point position in the pushing mode and achieving efficient stoping of the 110 construction method.
A construction method for pushing and mining a connecting roadway vertical intersection point on a 110-method working face is characterized by comprising the following steps of:
step A, the working face is pushed to a position less than 150m away from an upper connecting lane, and constant-resistance anchor cables are arranged in a lower connecting lane at an interchange point and matched with a channel steel support top plate and two sides;
b, paving rails in the upper connecting lane, connecting and fixing the rails through anchor rods, connecting the rails and anchor cables through chains, and arranging wood piles in the upper connecting lane at the cross points;
c, arranging a plurality of wood piles within a range of 20m away from the vertical intersection point along the downhill direction of the upper roadway;
and D, when the coal face is pushed to a position 2m away from the vertical intersection point, the large-proportion mining machine tail is adopted for mining on the face, and the face passes through the vertical intersection point of the connecting roadway.
Preferably, the constant-resistance anchor cable penetrates through the top plate of the lower connecting lane, the upper connecting lane and the immediate roof of the upper connecting lane, and the height of the constant-resistance anchor cable penetrating through the immediate roof of the upper connecting lane is more than 3.5 m.
Preferably, the wood piles are arranged in a groined shape by using square wood, and each wood pile is connected with the top and penetrates through the solid.
Preferably, the single hydraulic prop and the stacking hydraulic prop are respectively installed on two sides in the lower roadway, and the lower roadway is supported by the combination of an anchor rod, an anchor cable and an anchor net.
Preferably, single hydraulic supports and stack hydraulic supports are used for supporting in the lower roadway within the range of 20m ahead of the working face, the stack hydraulic supports are used for supporting in the roadway close to one side of the mining working face, and the single hydraulic supports are used for supporting in the roadway on the other side.
It is further preferred that the individual hydraulic props and the hydraulic props of the stack are cleaned to a solid bottom before installation, and that a spacer is installed under the legs when the bottom is soft coal.
It is further preferred that when the working face is pushed through the interchange roadway, the tail of the machine is quickly pushed to mine, and the working face inclines to pass through the intersection point of the connecting roadways.
The invention provides a construction method for pushing and mining a connecting roadway vertical intersection point on a 110-method working face, which has the beneficial effects that: the method strengthens and supports the top plate and two sides of the connecting roadway at the position of the interchange point of the advanced working face and manufactures the false roof, thereby ensuring the smooth pushing and mining of the working face; the working face is inclined to pass through the roadway by the large-proportion mining-adjusting machine tail pushing mining, so that the rapid stoping is realized on the premise of not influencing production; in addition, the method also has the advantages of safety, high-efficiency mining and the like.
Drawings
FIG. 1 is a schematic plan view of an interchange roadway;
FIG. 2 is a schematic cross-sectional structure of a cross-point roadway;
FIG. 3 is a schematic plan view of a face being extracted through an intersection;
in the figure: 1-upper connection lane, 2-lower connection lane, 3-connection lane, 4-wood buttress, 5-coal bed, 6-channel steel, 7-constant-resistance anchor cable, 8-single hydraulic prop, 9-buttress hydraulic prop and 10-goaf.
Detailed Description
A concrete embodiment of a construction method for pushing a working face of a 110 construction method to pass through a vertical intersection of connecting roadways according to the present invention will be described with reference to fig. 1 to 3.
The method is explained by combining a 4306 working face of a certain mine using a 110 construction method, and as the 4306 working face adopts an inclined long arm arrangement, the working face transversely cuts the 4301, 4302 and 4303 working faces to form a crosscut when stoping, wherein the crosscut relationship exists with the 4301 rubber belt lane. The thickness of rock strata of the upper and lower roadways at the position of the interchange is 3.6m through the calculation of the known roadway elevation, the self height of the roadway is 3.4m, and the fall of a top plate at the interchange point is 7 m; the thickness of the coal seam is 2.7m, the top plate is fine sandstone, and the bottom plate is mudstone.
A construction method for pushing and mining a working face through a vertical intersection point of an interconnecting roadway by adopting a 110-method comprises the following specific steps:
and step A, the coal face is pushed to a position less than 150m away from the upper connecting lane, and constant-resistance anchor cables are arranged in the lower connecting lane at the interchange point and matched with a channel steel support top plate and two sides. The anchor rod is made of deformed steel bar, the diameter phi of the anchor rod is 20mm, the length of the anchor rod is 2.4m, and the row spacing between the anchor rods is 800 multiplied by 800 mm.
The constant-resistance anchor cable penetrates through a top plate of the lower connecting lane, the upper connecting lane and a direct top of the upper connecting lane, and the height of the constant-resistance anchor cable penetrating through the direct top of the upper connecting lane is larger than 3.5 m. The length of the constant-resistance anchor cables in the embodiment is 10.5m, and the constant-resistance anchor cables are supported through the matching of channel steel, so that the supporting strength and effectiveness are further ensured.
And B, paving tracks in the upper connecting roadway, connecting and fixing the tracks through anchor rods, connecting the tracks and the anchor cables through chains, and arranging wood piles in the upper connecting roadway at the positions of the cross points.
The track can use the discarded track wherein, uses 40T's chain to fix track and constant resistance anchor rope, uses the stock fixed between the track to be whole, prevents that the stack from dropping. The wood cribs are arranged in a groined shape by using square wood, and each wood crib is connected with the top and penetrates through the top. The wood crib is connected to a roadway top plate and is connected with the roadway top, two layers of half-reason wood are used for connecting the wood crib at intervals between the two wood cribs, and double layers of metal rhombic nets can be laid above the wood cribs.
And C, driving a plurality of wood piles within a range of 20m from the vertical intersection point along the descending direction of the upper roadway to form the artificial roof.
And a single hydraulic prop and a stack hydraulic prop are respectively installed on two sides in the lower roadway, and the lower roadway is supported by combining an anchor rod, an anchor cable and an anchor net. In the lower roadway, a single hydraulic prop and a stack hydraulic prop are used for supporting within the range of 20m ahead of a working face, the stack hydraulic prop is used for supporting in the roadway close to one side of the mining working face, the single hydraulic prop is used for supporting on the other side of the roadway, the distance between the single hydraulic props and the roadway wall is 500mm, and the distance between the single hydraulic props is 500 mm; the multi-type hydraulic prop can strongly support the top plate when the top is cut by the 110-method. The single hydraulic prop and the stack hydraulic prop clean the bottom plate to the solid bottom before installation, and when the bottom plate is soft coal rock, cushion blocks are arranged below the prop legs.
And D, when the coal face is pushed to a position 2m away from the vertical intersection point, the large-proportion mining machine tail is adopted for mining on the face, and the face passes through the vertical intersection point of the connecting roadway.
When the working face is pushed to pass through the overpass roadway, the tail of the machine is quickly pushed to mine, and the working face is inclined to pass through the vertical intersection point of the connecting roadway, so that large-area top plates are prevented from caving. Before the working face passes through the interchange point, the overhaul class strengthens the overhaul quality, and particularly, a machine tail chain wheel, an antifriction plate, a gear box and the like ensure the continuous and normal operation of working face equipment so as to accelerate the propelling speed and strive for the mining as soon as possible.
The method is constructed on a certain mine 4306 working face, the construction sequence is adopted for the interchange position of the first connecting lane of the working face in advance, the top plate and two sides of the interchange position of the working face are reinforced and supported, and the false top maintenance is completed smoothly, a solid foundation is laid for the smooth pushing and mining of the working face, the tail of a mining machine is adjusted in a large proportion when the working face is pushed and mined to the position, the working face is pushed and mined smoothly to the interchange position in 2 days without influencing the production, 3 days ahead of expectation, the smooth pushing and mining to the interchange position is completed safely, and about 1 million tons of raw coal is produced. The method is verified to strengthen supporting and manufacturing a false roof for the top plate and two sides of the connecting roadway at the position of the interchange point on the advanced working face, ensure smooth pushing and mining of the working face and improve the recovery efficiency.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (1)
1. A construction method for pushing and mining a working face through a vertical intersection point of an interconnecting roadway by a 110-method is characterized by comprising the following steps:
step A, the working face is pushed to a position less than 150m away from the upper connecting lane, and constant-resistance anchor cables are arranged in the lower connecting lane at the interchange point and matched with a channel steel support top plate and two sides;
b, paving rails in the upper connecting roadway, connecting and fixing the rails through anchor rods, connecting the rails and anchor cables through chains, and arranging wood piles in the upper connecting roadway at the positions of the cross points;
c, arranging a plurality of wood piles within a range of 20m from the vertical intersection point along the descending direction of the upper roadway;
d, when the coal face is pushed to a position 2m away from the vertical intersection point, the large-proportion mining machine tail is adopted for pushing and mining on the face, and the face passes through the vertical intersection point of the connecting roadway;
the constant-resistance anchor cable penetrates through a top plate of the lower connecting lane, the upper connecting lane and the direct top of the upper connecting lane, and the height of the constant-resistance anchor cable penetrating through the direct top of the upper connecting lane is larger than 3.5 m;
the wood cribs are arranged in a groined shape by using square wood, and each wood crib is connected with the top and penetrates through the top;
the single hydraulic prop and the stack hydraulic prop are respectively installed on two sides in the lower connecting roadway, and the lower connecting roadway is supported by the combination of an anchor rod, an anchor cable and an anchor net;
in the lower roadway, a single hydraulic prop and a stack hydraulic prop are used for supporting within the range of 20m ahead of the working face, the stack hydraulic prop is used for supporting in the roadway close to one side of the mining working face, and the single hydraulic prop is used for supporting in the other side of the roadway;
the single hydraulic prop and the stack hydraulic prop clean the bottom plate to a solid bottom before installation, and a cushion block is arranged below the prop leg when the bottom plate is soft coal rock;
when the working face is pushed to pass through the interchange roadway, the tail is quickly pushed to mine, and the working face is inclined to pass through the intersection point of the connecting roadway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585767.0A CN111764900B (en) | 2020-06-24 | 2020-06-24 | Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585767.0A CN111764900B (en) | 2020-06-24 | 2020-06-24 | Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111764900A CN111764900A (en) | 2020-10-13 |
| CN111764900B true CN111764900B (en) | 2022-07-19 |
Family
ID=72722290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010585767.0A Active CN111764900B (en) | 2020-06-24 | 2020-06-24 | Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111764900B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863956B (en) * | 2021-09-24 | 2023-08-22 | 国家能源集团宁夏煤业有限责任公司 | Coal mine underground working face gateway roadway passing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1035221A1 (en) * | 1981-07-03 | 1983-08-15 | Донецкий Научно-Исследовательский Угольный Институт | Method of working gently-sloping coal seams with coal and gas outburst hazard present |
| CN103161474B (en) * | 2013-03-05 | 2015-05-06 | 中国神华能源股份有限公司 | Construction method of down hole interchange roadway |
| CN103615258B (en) * | 2013-12-06 | 2016-03-02 | 中国矿业大学(北京) | The supporting and protection structure of the interval pillar of roadway junction and supporting method |
| CN108150206B (en) * | 2017-11-16 | 2019-11-19 | 大同煤矿集团有限责任公司 | A method of passing through fully-mechanized mining working crossheading caving place |
| CN111119926A (en) * | 2019-12-23 | 2020-05-08 | 大同煤矿集团有限责任公司 | Gob-side entry retaining non-pillar mining support method for fully-mechanized coal mining face |
-
2020
- 2020-06-24 CN CN202010585767.0A patent/CN111764900B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111764900A (en) | 2020-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101372891B (en) | Strip filling integral backstopping coal mining method | |
| CN202064981U (en) | Soft coal layer roadway supporting structure | |
| CN103410515B (en) | It is a kind of that three-soft seam is reciprocating combines mining method without coal column | |
| CN110529144B (en) | Mixed type advanced support method for small-section mining roadway | |
| CN108005654B (en) | Construction process for overhead mining large-mining-height working face old roadway passing | |
| CN104632220B (en) | Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope | |
| CN108979638B (en) | Composite gob-side entry retaining method for wedge-shaped regenerated wall and single-leg shed beam of coal mining roadway | |
| CN102900449B (en) | Support method for underground goaf roof of coal mine | |
| CN103104260B (en) | Under complex geological condition, comprehensive-machine is to hand-pulled noodles coal-mining method | |
| CN111042817B (en) | Partition cemented prop wall-cutting filling mining method | |
| CN107725052A (en) | One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support | |
| CN112610258A (en) | Impact mine stoping roadway advanced support method applied to smart mine | |
| CN115853514A (en) | Reserved interval type ore pillar downward access filling mining method | |
| CN111764900B (en) | Construction method for pushing and mining through vertical intersection point of connecting roadway on working face of 110 construction method | |
| CN113565510B (en) | Ultra-thick coal seam fully mechanized filling mining method based on underground gangue pile | |
| CN104265294A (en) | Coal pillar-free mining technology for blasting mining face of steeply dipping seam | |
| CN109882172B (en) | Gob-side entry retaining method by using cut-off direct roof as roadside support wall | |
| CN101839134B (en) | Method for recovering irregular stagnant coal pillars left by room coal mining method | |
| CN110552731A (en) | top coal caving stoping roadway grouting anchor cable supporting structure and advanced supporting method thereof | |
| CN115653602A (en) | Reserved interval type pillar upward access filling mining method | |
| CN114183142B (en) | Method for mining inclined and steeply inclined thin ore body | |
| CN109025996B (en) | Underground mine layer-by-layer extrusion and smooth blasting mining method | |
| CN110145363B (en) | Roof control method for realizing transition from fully mechanized mining face caving to filling mining | |
| CN110700832B (en) | Mining method under complex condition of panel coal pillar working surface | |
| CN111502663A (en) | Tunneling method for collapse column in over-stress concentration area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |