CN102926803A - Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition - Google Patents
Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition Download PDFInfo
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- CN102926803A CN102926803A CN2012104260140A CN201210426014A CN102926803A CN 102926803 A CN102926803 A CN 102926803A CN 2012104260140 A CN2012104260140 A CN 2012104260140A CN 201210426014 A CN201210426014 A CN 201210426014A CN 102926803 A CN102926803 A CN 102926803A
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Abstract
The invention discloses a water drainage method for simultaneously exploiting water and coals under a complicated hydrological condition. The method comprises the following steps of: constructing a dedicated water drainage tunnel connected to a working face in a coal layer in a water enrichment region of a coal layer top plate, and constructing a sedimentation pool at the tail end of the water drainage tunnel; forming a water drainage tunnel along a conveying belt tunnel; forming communicating holes for communicating the conveying belt tunnel and the water drainage tunnel in the conveying belt tunnel at intervals, arranging a vibration sieve at the tail end of the water drainage tunnel, and forming another coal conveying tunnel behind the vibration sieve; drilling water drainage holes in the water drainage tunnel for the water enrichment region of the coal layer top plate, so that a part of top plate water can be drained in advance, after the water is drained, draining the water into the sedimentation pool through the water drainage tunnel, and after sedimentation, draining the water into a water bin at the bottom of a well; and after a part of the top plate water is drained in advance, executing working face exploitation when the water is continuously drained. By the method, aiming at the water yield property of the coal layer, the top plate water is drained from the dedicated water drainage tunnel in advance; water drainage and coal exploitation are simultaneously executed, so that pressure of in-advance water drainage and crossheading water drainage are reduced; and the conventional single water drainage mode of the working face is changed.
Description
Technical field
The invention belongs to the Coal Mining Technology field.
Background technology
About 25,000,000,000 t of coal reserves that China emphasis colliery is threatened by water, nearly 10,000,000,000 t of coal reserves that threatened by the water bodys such as surface water body (river, river, lake, sea etc.), loose aquifer, bedrock aquifer.Affected by the river, just there be more than 200 mine threatened by more than 100 bars size river, and the coalfield of North China, East China, the Northeast is that the unconsolidated formation aquifer covers by Quaternary system and the 3rd generally, causes the relatively best superficial part outcrop area seam mining difficulty of its exploitation benefit.
Coal mine roof plate is permeable to be a very complicated problem that is subjected to various factors, be subject to the impact of geological conditions and structure, hydrogeological conditions and man-made recovery's condition, can be summarized as the co-controlling that is subject to water source, overlying strata stratum, geological structure and 4 kinds of factors of digging activity.Under complicated hydrologic condition, how to realize that the high-yield and high-efficiency exploitation is the great difficult problem that domestic mining circle need to solve.
The control roof water mainly is that top board is arranged drainage boring both at home and abroad at present, roof water is emitted in advance, owing to there is not special drainage channel, generally be from the transportation lane, directly to enter shaft sump, so can not carry out simultaneously with coal mining when discharging water in advance, and roof water to put in advance be a long process, the need that have discharging 2-3 affects continuing of coal-face.
Because roof water can not all be emitted in advance, along with roof caving produces the water guide crack, still have a large amount of roof waters to discharge from work plane during working face mining besides, the water of discharge and the coal dust of exploitation are mixed in together, enter shaft sump from the transportation lane.Therefore, the water that top board is emitted in advance and work plane muddy water enter shaft sump together, cause the coal bunker alluvial, affect retaining, increase and dig clearly workload.For the later on water coal separation of shaft sump has increased difficulty, the draining difficulty strengthens.
Therefore according to the watery of top board, taking the down-hole to replenish drainage measure, is that the realization roof water is put in advance and mined and carry out simultaneously and the prerequisite of safe working.
Summary of the invention
The objective of the invention is to put in advance the problem that can not carry out simultaneously and the effective problem of draining for mining under the complicated hydrologic condition with roof water, propose a kind of water, coal with the water discharge method of adopting, thereby guarantee the safe working in flood coal seam.
Technical scheme of the present invention is:
Water, coal is characterized in that with the water discharge method of adopting under a kind of complicated hydrologic condition:
The first step: before the working face mining, according to hydrogeological detection event, the special-purpose opening for drainage of at first in the coal seam in the rich pool of roof, constructing, the opening for drainage head end connects work plane, and the terminal construction of opening for drainage sedimentation basin connects between sedimentation basin and the wellhole; Drainage trenching in the opening for drainage, and carry out necessary supporting; Opening for drainage head end and work plane junction arrange filter screen;
Second step: along sluicing tunnel of developing, travelling belt lane, the absolute altitude in sluicing tunnel should be lower than the absolute altitude in belt lane, and is designed with certain gravity flow gradient again; The interval is set up and is connected eye in the travelling belt lane, by connecting eye with travelling belt lane and sluicing roadway linking; End in the sluicing tunnel is installed vibrosieve, and vibrosieve is opened up later on a fortune coal road road that is connected with the travelling belt lane again, and the fortune coal road is arranged haulage device in the road;
The 3rd step: in special-purpose opening for drainage, bore the dewatering orifice to the rich pool of roof, a part of roof water is emitted in advance, enter sedimentation basin by opening for drainage after emitting, enter wellhole after the precipitation;
The 4th step: after a part of roof water is emitted in advance, carry out working face mining when continuing to emit, a part of water coal body that roof water forms enters opening for drainage behind strainer filtering, enter sedimentation basin from opening for drainage, enters wellhole after the precipitation; Remaining water coal body leaks into the sluicing tunnel from nearest perforation eye, when the water coal body flow to vibrosieve, granularity obtains filtering greater than the solid particle of sieve gap, filtration coal on the sieve haulage device of packing into, be transported to the travelling belt lane from fortune coal road road, be transported to Bunker with work plane coal by equipment of conveyer again; Black water under the sieve enters shaft sump.
Good effect of the present invention is: for the watery in coal seam, the water of top board is discharged in advance from special-purpose opening for drainage; Mine when discharging water, the water coal body part of work plane enters special-purpose opening for drainage behind strainer filtering, and remainder is diverted to the sluicing tunnel, through vibrosieve from after discharge; Thereby alleviated the pressure that discharges water in advance with the crossheading draining, change the original single discharging mode of work plane, the work plane drainage system has been divided into three parts discharges, improved the drainability of work plane, thereby keep the unimpeded and water of work plane draining, coal to adopt together, and keep safe working.By strainer filtering and vibrosieve from, coal is filtered out, prevent blocking up of opening for drainage, keep the unimpeded of drainage system, realized the in advance purification before black water enters shaft sump, reduced the amount of sludge of shaft sump, guaranteed the water-holding capacity of sump.
Description of drawings
Below in conjunction with description of drawings enforcement of the present invention.
Fig. 1 is the schematic diagram of the embodiment of the invention.
Marginal data, 1-work plane, 2-travelling belt, 3-connect eye, 4-vibrosieve, 5-sluicing tunnel, 7-wellhole, 8-opening for drainage, 9-travelling belt lane, 10 fortune coal road roads, 11-haulage device, 12-filter screen, 13-sedimentation basin, the rich pool of 14-.
The specific embodiment
Work plane water discharge method under a kind of complicated hydrologic condition, as follows:
1, before work plane 1 exploitation, according to hydrogeological detection event, the special-purpose opening for drainage 8 of at first in the coal seam in the rich pool 14 of roof, constructing, opening for drainage 8 head ends connect work plane 1, and terminal construction sedimentation basin 13 connects between sedimentation basin 13 and the wellhole 7; Opening for drainage 8 interior drainage trenchings, and carry out necessary supporting; Opening for drainage 8 head ends and work plane 1 junction arrange filter screen 12;
2, again along the travelling belt lane 9 the developing sluicing tunnel 5, the absolute altitude in sluicing tunnel 5 should be lower than the absolute altitude in belt lane 9, and is designed with certain gravity flow gradient; In travelling belt lane 9, set up at a certain distance to connect eye 3, by connecting eye 3 travelling belt lane 9 and sluicing tunnel 5 are connected; End in sluicing tunnel 5 is installed vibrosieve 4, opens up a fortune coal road road 10 that is connected with travelling belt lane 9 after the vibrosieve 4 again, arranges haulage device 11 in the fortune coal road road 10; Haulage device 11 is connected with travelling belt 2 in the travelling belt lane 9;
3, afterwards, in special-purpose opening for drainage 8, bore the dewatering orifice to the rich pool 14 of roof, a part of roof water is emitted in advance, enter sedimentation basin 13 by opening for drainage 8 after emitting, enter wellhole 7 after the precipitation;
4, after a part of roof water is emitted in advance, when continuing to emit, carry out the exploitation of work plane 1, a part of water coal body that roof water forms enters opening for drainage 8 after filter screen 12 filters, enter sedimentation basin 13 from opening for drainage 8, enters wellhole 7 after the precipitation; Remaining water coal body leaks into sluicing tunnel 5 from nearest perforation eye 3, when the water coal body flow to vibrosieve 4, granularity obtains filtering greater than the solid particle of sieve gap, filtration coal on the sieve haulage device 11 of packing into, be transported to travelling belt lane 9 from fortune coal road road 10, be transported to Bunker 6 with work plane coal by equipment of conveyer 2 again; Black water under the sieve enters shaft sump 7.
Claims (1)
1. water, coal is characterized in that with the water discharge method of adopting under the complicated hydrologic condition:
The first step: before the working face mining, according to hydrogeological detection event, the special-purpose opening for drainage of at first in the coal seam in the rich pool of roof, constructing, the opening for drainage head end connects work plane, and the terminal construction of opening for drainage sedimentation basin connects between sedimentation basin and the wellhole; Drainage trenching in the opening for drainage, and carry out supporting; Opening for drainage head end and work plane junction arrange filter screen;
Second step: along sluicing tunnel of developing, travelling belt lane, the absolute altitude in sluicing tunnel should be lower than the absolute altitude in belt lane, and is designed with the gravity flow gradient again; The interval is set up and is connected eye in the travelling belt lane, by connecting eye with travelling belt lane and sluicing roadway linking; End in the sluicing tunnel is installed vibrosieve, and vibrosieve is opened up later on a fortune coal road road that is connected with the travelling belt lane again, and the fortune coal road is arranged haulage device in the road;
The 3rd step: in special-purpose opening for drainage, bore the dewatering orifice to the rich pool of roof, a part of roof water is emitted in advance, enter sedimentation basin by opening for drainage after emitting, enter wellhole after the precipitation;
The 4th step: after a part of roof water is emitted in advance, carry out working face mining when continuing to emit, a part of water coal body that roof water forms enters opening for drainage behind strainer filtering, enter sedimentation basin from opening for drainage, enters wellhole after the precipitation; Remaining water coal body leaks into the sluicing tunnel from nearest perforation eye, when the water coal body flow to vibrosieve, granularity obtains filtering greater than the solid particle of sieve gap, filtration coal on the sieve haulage device of packing into, be transported to the travelling belt lane from fortune coal road road, be transported to Bunker with work plane coal by equipment of conveyer again; Black water under the sieve enters shaft sump.
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| CN201210426014.0A CN102926803B (en) | 2012-10-30 | 2012-10-30 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
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| CN201210426014.0A CN102926803B (en) | 2012-10-30 | 2012-10-30 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103742145A (en) * | 2013-12-24 | 2014-04-23 | 山东新阳能源有限公司 | Water control method for abnormal water-enriched region of coal mine |
| CN106285777A (en) * | 2016-10-28 | 2017-01-04 | 河北钢铁集团矿业有限公司 | The method that flood mine mineral building discharges water in advance |
| CN107740707A (en) * | 2017-08-13 | 2018-02-27 | 煤炭科学技术研究院有限公司 | Thick coal-layer mining water damage prevention and controls under a kind of deep high artesian |
| CN108590754A (en) * | 2018-04-24 | 2018-09-28 | 中煤西安设计工程有限责任公司 | Concentrate sluicing lane method for arranging in a kind of monocline coal seam exploiting field |
| CN113107595A (en) * | 2021-03-23 | 2021-07-13 | 河南理工大学 | Rich water roof face-up mining face drainage system based on gob entry |
| CN113863978A (en) * | 2021-09-24 | 2021-12-31 | 国家能源集团宁夏煤业有限责任公司 | Face-up mining working face roadway system and construction method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742145A (en) * | 2013-12-24 | 2014-04-23 | 山东新阳能源有限公司 | Water control method for abnormal water-enriched region of coal mine |
| CN106285777A (en) * | 2016-10-28 | 2017-01-04 | 河北钢铁集团矿业有限公司 | The method that flood mine mineral building discharges water in advance |
| CN106285777B (en) * | 2016-10-28 | 2018-05-08 | 河北钢铁集团矿业有限公司 | The method that flood mine mineral building discharges water in advance |
| CN107740707A (en) * | 2017-08-13 | 2018-02-27 | 煤炭科学技术研究院有限公司 | Thick coal-layer mining water damage prevention and controls under a kind of deep high artesian |
| CN108590754A (en) * | 2018-04-24 | 2018-09-28 | 中煤西安设计工程有限责任公司 | Concentrate sluicing lane method for arranging in a kind of monocline coal seam exploiting field |
| CN113107595A (en) * | 2021-03-23 | 2021-07-13 | 河南理工大学 | Rich water roof face-up mining face drainage system based on gob entry |
| CN113107595B (en) * | 2021-03-23 | 2023-09-26 | 河南理工大学 | Gob-side entry retaining-based water-rich roof upward mining surface drainage system |
| CN113863978A (en) * | 2021-09-24 | 2021-12-31 | 国家能源集团宁夏煤业有限责任公司 | Face-up mining working face roadway system and construction method thereof |
| CN113863978B (en) * | 2021-09-24 | 2023-10-03 | 国家能源集团宁夏煤业有限责任公司 | Face upward mining roadway system and construction method thereof |
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