CN102061920B - Exploring method of water liberation working surface of water-enriched mine area - Google Patents
Exploring method of water liberation working surface of water-enriched mine area Download PDFInfo
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- CN102061920B CN102061920B CN 201010603932 CN201010603932A CN102061920B CN 102061920 B CN102061920 B CN 102061920B CN 201010603932 CN201010603932 CN 201010603932 CN 201010603932 A CN201010603932 A CN 201010603932A CN 102061920 B CN102061920 B CN 102061920B
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Abstract
The invention discloses an exploring method of a water liberation working surface of a water-enriched mine area, which comprises the following steps of: 1. determining a water-enriched layer and selecting a coal layer where a liberation working surface is located; 2. determining basic exploration parameters of the liberation working surface according to water inflow basic data of mine wells; 3. constructing a drainage system; 4. exploring the liberation working surface and synchronously draining: fully caving a top plate of the working surface in the exploration process of the liberation working surface to form a top plate fissure zone, correspondingly forming a water guiding channel between a gob and the water-enriched layer, and discharging the water in the water-enriched layer through the water guiding channel, a smooth groove of the working surface and the draining system; and synchronously observing the water inflow in the water-enriched layer and correspondingly determining the lasting time for exploration of the liberation working surface until the flood problem is solved; and 5. normally exploring the coal layer of the explored mining area. The invention has the advantages of reasonable design, convenience of construction, low input cost, good effect and wide popularization prospect and can radically solve the flood problem in the production process of the water-enriched mining area from the headstream.
Description
Technical field
The invention belongs to the mining technique field, especially relate to and a kind ofly be rich in water mining area hydrolysis and put the work plane exploitation method.
Background technology
Continuous expansion along with coal mining scope and intensity, many mining areas newly developed have all run into the Safety production questions that rich water-bearing rock (coal) layer brings in process of production, as: work plane thoroughly (dash forward) water burst that husky, argillaceous agglutination face roof argillization or intensity sharply reduce and inbreak before the top board frame, soft-rock tunnel drastic deformation, destruction, supporting lost efficacy (anchor cable, anchor pole come off), large-inclination-angle coal bed floor undulation argillization, destruction slippage the etc. when inbreak of collapsing that causes, Coal Face Passing Through Fault.According to the ASSOCIATE STATISTICS data, coal mine flood become be equal to the coal mine gas disaster, the maximum disaster of death toll, not only cause a large amount of casualtiess and great economic loss, and seriously restricted the further raising of Mine Integrated technology and economic benefit.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, providing a kind of is rich in water mining area hydrolysis and puts the work plane exploitation method, it is reasonable in design, easy construction, input cost is low and result of use good, popularizing application prospect is extensive, can be from the source, fundamentally solve " flood " problem that is rich in the manufacturing process of water mining area, significantly promote mine safety production level and technical economic benefit.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind ofly be rich in water mining area hydrolysis and put the work plane exploitation method, the mining area of exploiting comprises a plurality of coal seams of distribution from top to bottom, it is characterized in that the method may further comprise the steps:
Step 1, be rich in that water layer is determined and liberation coal seam, work plane place is selected: before whole mining area is exploited, according to the hydrogeologic data in exploitation mining area, determine to be rich in the position of water layer; Below determine to be rich in water layer, select again a coal seam as liberation coal seam, work plane place, and the coal-face of being arranged with described liberation work plane place bottom is as the liberation work plane; Described liberation work plane and be rich in spacing between the water layer and should satisfy in liberation working face mining process and after the face roof of liberation work plane fully was caving, formed top board fissure zone can extend to and be rich in water layer;
The construction of step 3, drainage system: set up a drainage system that the water in the liberation goaf, work plane rear is discharged in exploitation liberation work plane bottom, and so that the drainage pipe of the drainage system of setting up with liberate the return airway of laying the work plane top and the bottom and be connected;
Liberate in the step 4 in working face mining and the synchronous drainage procedure, the water yield that is rich in the water layer is carried out simultaneous observation and record, and determine exploitation duration of liberation work plane according to the water yield observation data that records, drain into and can not cause the recovery process in a plurality of coal seams in the exploitation mining area till the flood threat until will be rich in water in the water layer;
Normally exploit in step 5, the coal seam, mining area of exploiting: according to conventional exploitation method, a plurality of coal seams in exploitation mining area are exploited respectively.
Above-mentionedly be rich in water mining area hydrolysis and put the work plane exploitation method, it is characterized in that: it is 35 °～55 ° large-inclination-angle coal bed that a plurality of coal seams in mining area described in the step 1 are inclination alpha; Correspondingly, when in the step 5 coal seam, exploitation mining area normally being exploited, from top to bottom successively a plurality of coal seams in exploitation mining area are exploited respectively.
Above-mentionedly be rich in water mining area hydrolysis and put the work plane exploitation method, it is characterized in that: the drainage system described in the step 3 comprises a plurality of drainage pipes that the return airway laid with liberation work plane top and the bottom communicates, the drainage plant that is laid in the sump of drainage pipe water outlet and is laid in the sump top and the water in the sump is discharged.
Above-mentionedly be rich in water mining area hydrolysis and put the work plane exploitation method, it is characterized in that: the conventional exploitation method described in the step 4 is that big gun is adopted or mechanical mining method.
The present invention compared with prior art has the following advantages:
1, reasonable in design, novel and construction sequence is easy, recovery process is realized convenient.
2, input cost is low, need not to drop into large number quipments and technical work personnel, only needs drainage system corresponding to laying to carry out draining and gets final product, and difficulty of construction is very low.
3, result of use is good and practical value is high, only need in the coal seam of being rich in water mining area selection rational position, and arrange the liberation work plane of different size according to actual concrete condition, again according to conventional exploitation method exploitation " water Protective Coal Seam (namely liberating work plane) ", just can finish the layer of the rock (coal) in quilt liberation scope water is carried out reasonable white-out, thereby can be from the source, fundamentally solve " flood " problem that is rich in the manufacturing process of water mining area, significantly promote mine safety production level and technical economic benefit.
4, widely applicable, popularizing application prospect is extensive, can effectively promote applicable to the multiple recovery process that is rich in the water mining area.
In sum, the present invention is reasonable in design, easy construction, input cost is low and result of use good, popularizing application prospect is extensive, can be from the source, fundamentally solve " flood " problem that is rich in the manufacturing process of water mining area, significantly promote mine safety production level and technical economic benefit.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is recovery process FB(flow block) of the present invention.
Fig. 2 is that water layer and the structural representation of liberating work plane are rich in mining area that the present invention exploits.
Fig. 3 is the installation position schematic diagram of drainage system that the present invention adopts.
Fig. 4 is the hull-borne reference diagram of the present invention when carrying out draining to being rich in water layer.
Description of reference numerals:
1-is rich in water layer; 2-liberates work plane; The 3-conduit pipe;
The 4-drainage pipe; The 5-sump; 6-drainage plant;
The 7-goaf; Crossheading on the 8-work plane; Crossheading under the 9-work plane.
Large lane one of 10-stage; Large lane two of 11-stage; Large lane three of 12-stage;
Large lane four of 13-stage.
The specific embodiment
As shown in Figure 1 a kind of is rich in the hydrolysis of water mining area and put the work plane exploitation method, and the mining area of exploiting comprises a plurality of coal seams of distribution from top to bottom, and its exploitation method may further comprise the steps:
Step 1, be rich in that water layer is determined and liberation coal seam, work plane place is selected: before whole mining area is exploited, according to the hydrogeologic data in exploitation mining area, determine to be rich in the position of water layer 1; Below determine to be rich in water layer 1, select again a coal seam as liberation coal seam, work plane place, and the coal-face of being arranged with described liberation work plane place bottom is as liberation work plane 2; Described liberation work plane 2 and be rich in spacing between the water layer 1 and should satisfy in liberation work plane 2 recovery process and after the face roof of liberation work plane 2 fully was caving, formed top board fissure zone can extend to and be rich in water layer 1, sees Fig. 2 for details.
During actual the exploitation, specifically after the whole developing of mine and production system basic comprising, be rich under the rock of water (coal) layer (namely being rich in water layer 1), selecting lower coal seam, layer position, and the extreme lower position in this coal seam is arranged " liberation work plane 2 ".
That is to say, during actual exploitation, according to the inflow rate of mine water basic data that the mining area hydrogeologic data provides, determine the basic operational parameter (comprising face length, advance of the face length and working face extraction height) of " liberation work plane 2 ".Usually inflow rate of mine water is larger, and correspondingly, the length of liberation work plane 2 is longer, advance of the face length is longer and back production is highly also larger, and vice versa.
The construction of step 3, drainage system: set up a drainage system that the water in the liberation goaf, work plane 2 rear 7 is discharged in exploitation liberation work plane 2 bottoms, and so that the drainage pipe 4 of the drainage system of setting up with liberate the return airway of laying work plane 2 top and the bottom and be connected.
In the present embodiment, in conjunction with Fig. 3, the drainage plant 6 that described drainage system comprises a plurality of drainage pipes 4 that the return airway laid with liberation work plane 2 top and the bottom communicates, is laid in the sump 5 of drainage pipe 4 water outlets and is laid in sump 5 tops and the waters in the sump 5 are discharged.Described return airway is respectively on the work plane that is laid in liberation work plane 2 top and the bottom crossheading 9 under the crossheading 8 and work plane.And the described drainage system of actual laying in the bottom of liberation work plane 2, is specifically arranged sump 5 and drainage pipe 4 in the bottom of the mining system of going down the hill, and is assembled corresponding drainage plant 6 according to inflow rate of mine water.
Liberate in the step 4 in working face mining and the synchronous drainage procedure, the water yield that is rich in the water layer 1 is carried out simultaneous observation and record, and determine exploitation duration of liberation work plane 2 according to the water yield observation data that records, drain into and can not cause the recovery process in a plurality of coal seams in the exploitation mining area till the flood threat until will be rich in water in the water layer 1.
In this enforcement, described conventional exploitation method is that big gun is adopted or mechanical mining method.During the actual selection exploitation method, according to the existing production technique level in different mining areas, select rational exploitation method (big gun is adopted or mechanical mining), under the premise that security is guaranteed liberation work plane 2 is exploited.And in liberation work plane 2 recovery process, according to according to determined basic operational parameter in the step 2, select reasonably basic operational parameter to liberate work plane 2 exploitations, in liberation work plane 2 recovery process, face roof fully is caving, and so that face roof fissure zone and the water layer 1 of being rich on it link up, form corresponding conduit pipe 3, the water in the aquifer (namely being rich in water layer 1) enters in the goaf 7 at liberation work plane 2 rears in the specific Production Regional of mine by conduit pipe 3 thereby make, flow in the sump 5 that has formed through return airway more afterwards, and discharge ground or other appointed area by described drainage system.
In addition, in liberation work plane 2 recovery process, should utilize the inflow rate of mine water observation method that the water yield that is rich in the water layer 1 is observed, depending on being liberated the water content white-out situation of rich water-bearing rock (coal) layer (namely being rich in water layer 1) in the zone, determine the exploitation duration of liberation work plane 2, guarantee that no longer being subject to flood in the recovery process in all coal seams in the liberation zone threatens.
Normally exploit in step 5, the coal seam, mining area of exploiting: according to conventional exploitation method, a plurality of coal seams in exploitation mining area are exploited respectively.
In the present embodiment, it is 35 °～55 ° large-inclination-angle coal bed that a plurality of coal seams in mining area described in the step 1 are inclination alpha; Correspondingly, when in the step 5 coal seam, exploitation mining area normally being exploited, from top to bottom successively a plurality of coal seams in exploitation mining area are exploited respectively.In the present embodiment, the mining area of exploiting comprises four large lanes of the stage of laying from top to bottom, and the large lane of four-stage is followed successively by large lane 1 of stage from top to bottom, large lane 2 11 of stage, large lane 3 12 of stage and large lane 4 14 of stage (large lane 4 14 of described stage specifically is laid in liberation work plane 2 bottoms), in the step 5 to large lane 1 of stage, large lane 2 11 of stage and the stage large lane of 3 12 three phases, large lane is that the boundary is divided into three phases exploitation, specifically first the phase I at one 10 places, large lane of stage is exploited, again the second stage at 2 11 places, large lane of stage is exploited afterwards, at last the phase III at 3 12 places, large lane of stage is exploited.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (4)
1. one kind is rich in water mining area hydrolysis and puts the work plane exploitation method, and the mining area of exploiting comprises a plurality of coal seams of distribution from top to bottom, it is characterized in that the method may further comprise the steps:
Step 1, be rich in that water layer is determined and liberation coal seam, work plane place is selected: before whole mining area is exploited, according to the hydrogeologic data in exploitation mining area, determine to be rich in the position of water layer (1); Select a coal seam as liberation coal seam, work plane place in the below of determine to be rich in water layer (1) again, and the coal-face of being arranged with described liberation work plane place bottom is as liberation work plane (2); Described liberation work plane (2) and be rich in spacing between the water layer (1) and should satisfy in liberation work plane (2) recovery process and after the face roof of liberation work plane (2) fully was caving, formed top board fissure zone can extend to and be rich in water layer (1);
Step 2, the basic operational parameter of liberation work plane are determined: the inflow rate of mine water basic data that provides in the hydrogeologic data according to the exploitation mining area, and in conjunction with liberation work plane (2) be rich in spacing between the water layer (1), determine the basic operational parameter when work plane (2) is liberated in exploitation; Described basic operational parameter comprises face length, advance of the face length and working face extraction height, the inflow rate of mine water that provides in the inflow rate of mine water basic data is larger, face length is larger, and advance of the face length is longer and the working face extraction height is larger;
The construction of step 3, drainage system: set up a drainage system that the water in liberation work plane (2) goaf, rear (7) is discharged in exploitation liberation work plane (2) bottom, and so that the drainage pipe (4) of the drainage system of setting up with liberate the return airway of laying work plane (2) top and the bottom and be connected;
Step 4, liberation working face mining and synchronous draining: adopt the conventional exploitation method in the suitable mining area of exploiting, and according to determined basic operational parameter in the step 2, liberation work plane (2) is exploited; In described liberation work plane (2) recovery process, so that the face roof of liberation work plane (2) fully is caving, the top board fissure zone that corresponding so that face roof fully is caving rear formation be rich in water layer (1) and be communicated with, this moment, described top board fissure zone was so that be rich in water layer (1) and liberation work plane (2) rear formation a plurality of conduit pipes (3) between the goaf (7) of exploitation, and be rich in the interior water of water layer (1) in a plurality of described conduit pipes (3) enter described goaf (7), and discharge by the return airway and the drainage system described in the step 3 that are laid in liberation work plane (2) top and the bottom;
Liberate in the step 4 in working face mining and the synchronous drainage procedure, the water yield that is rich in the water layer (1) is carried out simultaneous observation and record, and determine exploitation duration of liberation work plane (2) according to the water yield observation data that records, drain into and can not cause the recovery process in a plurality of coal seams in the exploitation mining area till the flood threat until will be rich in water in the water layer (1);
Normally exploit in step 5, the coal seam, mining area of exploiting: according to conventional exploitation method, a plurality of coal seams in exploitation mining area are exploited respectively.
2. be rich in water mining area hydrolysis and put the work plane exploitation method according to claimed in claim 1, it is characterized in that: it is 35 °～55 ° large-inclination-angle coal bed that a plurality of coal seams in mining area described in the step 1 are inclination alpha; Correspondingly, when in the step 5 coal seam, exploitation mining area normally being exploited, from top to bottom successively a plurality of coal seams in exploitation mining area are exploited respectively.
3. describedly be rich in water mining area hydrolysis and put the work plane exploitation method according to claim 1 or 2, it is characterized in that: the drainage system described in the step 3 comprises a plurality of drainage pipes (4) that the return airway laid with liberation work plane (2) top and the bottom communicates, the drainage plant (6) that is laid in the sump (5) of drainage pipe (4) water outlet and is laid in sump (5) top and the interior water of sump (5) is discharged.
4. describedly be rich in water mining area hydrolysis and put the work plane exploitation method according to claim 1 or 2, it is characterized in that: the conventional exploitation method described in the step 4 is that big gun is adopted or mechanical mining method.
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| CN 201010603932 CN102061920B (en) | 2010-12-24 | 2010-12-24 | Exploring method of water liberation working surface of water-enriched mine area |
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| CN 201010603932 CN102061920B (en) | 2010-12-24 | 2010-12-24 | Exploring method of water liberation working surface of water-enriched mine area |
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| CN102061920B true CN102061920B (en) | 2013-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2722327C1 (en) * | 2019-11-25 | 2020-05-29 | федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" (ФГБОУ ВО "ИРНИТУ") | Method of water disposal in development of formation deposits by way of an uprise with internal dumping |
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| RU2567564C1 (en) * | 2012-04-28 | 2015-11-10 | Чайна Шэньхуа Энерджи Компани Лимитед | Method of distributed storage and use of ground waters in mine |
| CN102913280B (en) * | 2012-10-30 | 2014-11-12 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for draining roof water in flood mine |
| CN103670415B (en) * | 2013-12-26 | 2016-03-16 | 河南工业和信息化职业学院 | A kind of underground coal mine big gun is adopted and is adopted unitized production method with general |
| CN104819010B (en) * | 2015-03-26 | 2016-10-05 | 山东科技大学 | The construction method of prevention top board and Water Inrush when a kind of coal mine work area crosses water conductive fault |
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| CN111997688A (en) * | 2020-07-15 | 2020-11-27 | 陕西麟北煤业开发有限责任公司 | Method for preventing and controlling water damage of coal seam roof separation layer |
| CN113006867B (en) * | 2021-04-27 | 2021-12-21 | 中国矿业大学 | Combined prevention and control method for multiple disasters before coal mining on high-gas low-lying island working face |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307978A (en) * | 1978-11-30 | 1981-12-29 | Mitsui Sekitan Kogyo Kabushiki Kaisha | Method of relieving earth pressure in a working area |
| SU1469137A1 (en) * | 1986-12-25 | 1989-03-30 | Ленинградский горный институт им.Г.В.Плеханова | Roof control method |
| CN1043768A (en) * | 1989-12-18 | 1990-07-11 | 湖南省零陵地区冶金矿山管理站 | Ion-adsorpting local immersion-extraction method for mining rare-earth minerals |
| CN101446200A (en) * | 2008-07-10 | 2009-06-03 | 梁如林 | Advancing coal-mining method |
-
2010
- 2010-12-24 CN CN 201010603932 patent/CN102061920B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307978A (en) * | 1978-11-30 | 1981-12-29 | Mitsui Sekitan Kogyo Kabushiki Kaisha | Method of relieving earth pressure in a working area |
| SU1469137A1 (en) * | 1986-12-25 | 1989-03-30 | Ленинградский горный институт им.Г.В.Плеханова | Roof control method |
| CN1043768A (en) * | 1989-12-18 | 1990-07-11 | 湖南省零陵地区冶金矿山管理站 | Ion-adsorpting local immersion-extraction method for mining rare-earth minerals |
| CN101446200A (en) * | 2008-07-10 | 2009-06-03 | 梁如林 | Advancing coal-mining method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2722327C1 (en) * | 2019-11-25 | 2020-05-29 | федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" (ФГБОУ ВО "ИРНИТУ") | Method of water disposal in development of formation deposits by way of an uprise with internal dumping |
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