CN103615248A - Top and bottom plate treatment mining technology for hydrogen sulfide-containing coal bed - Google Patents
Top and bottom plate treatment mining technology for hydrogen sulfide-containing coal bed Download PDFInfo
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- CN103615248A CN103615248A CN201310616964.4A CN201310616964A CN103615248A CN 103615248 A CN103615248 A CN 103615248A CN 201310616964 A CN201310616964 A CN 201310616964A CN 103615248 A CN103615248 A CN 103615248A
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Abstract
The invention relates to a top and bottom plate treatment mining technology for hydrogen sulfide-containing coal bed, belonging to the technical field of mining of the hydrogen sulfide-containing coal bed. The top and bottom plate treatment mining technology specifically comprises the following steps: (1) detecting whether a rock stratum contains hydrogen sulfide gas; (2) arranging a roadway in a coal roadway if the gas content is low; (3) adopting isolation means if the gas content exceeds the standard; (4) detecting the hydrogen sulfide content after re-opening, and performing coal roadway driving and mining when the content reaches a safe value and below; (5) monitoring the content of the hydrogen sulfide gas, and performing direct driving and recovery if the gas content is in a safe value range; and (6) increasing the distance away from the coal bed if the content of the hydrogen sulfide exceeds the standard, detecting the content of hydrogen sulfide, and abandoning the technology if the gas content cannot reach the standard. According to the mining technology, a phenomenon that a human body and electromechanical equipment are directly harmed by the hydrogen sulfide gas is avoided, the personal safety is protected, good operation of the electromechanical equipment is guaranteed, and the effect of treating hydrogen sulfide is improved.
Description
Technical field
The production practice that the present invention relates to the roof and floor improvement in a kind of sulfide hydrogen coal seam, belongs to sulfide hydrogen seam mining technical field.
Background technology
Hydrogen sulfide is hypertoxic gas, and coal body is 90 times of left and right of gas to the adsorbance of hydrogen sulfide, in the coal seam of part mine because containing hydrogen sulfide gas, cause workman's life to be on the hazard, what have even gets killed, and the mine that causes having stops production, or part coal seam abandons exploitation, abandon the phenomenon of precious resources.Conventional improvement method is exactly directly at roadway's sides and work plane, in coal body, to inject alkaline solution, produces reaction generation salts substances, thereby the content of hydrogen sulfide is reduced to below mark value to reach with hydrogen sulfide, is conducive to exploitation.
The hydrogen sulfide containing origin cause of formation in coal seam mainly contains three classes: biogenesis, the heat chemistry origin cause of formation, volcanic eruption, what wherein play an important role is the first two origin cause of formation.No matter because lotion mineral and the generation of hydrocarbon-containifirst coal body is micro-reduction sulfate, or thermochemical sulfate reduction all impels the generation of hydrogen sulfide.And in the adjoining rock of coal body, although contain lotion mineral, hydro carbons coal body for want of, so hydrogen sulfide content is extremely low, this dodges dangerous harbor for control and exploitation sulfide hydrogen coal seam provide one.
The administration way in existing sulfide hydrogen coal seam, mostly is directly development work in coal seam, in the tunnel constantly gushing out, constructs at hydrogen sulfide gas, workman bears heavy safeguard, efficiency declines, and the electromechanical equipment in tunnel also will be subject to the corrosion of hydrogen sulfide gas, efficiency decline.In addition, direct construction drill in coal seam, the hydrogen sulfide content of gushing out from boring is higher, danger is larger, and sealing of hole, while injecting high pressure base solution, the diffusion effect of aqueous slkali in coal body is also not obvious; In tunnel, spray aqueous slkali, contaminated air, has damage in various degree to personnel and equipment; Employing is by administering hydrogen sulfide, and weak effect does not have effect sometimes at all.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned production practice, the production practice of the roof and floor improvement in a kind of sulfide hydrogen coal seam is provided, to create protection distance, sulfide hydrogen coal seam is administered, until hydrogen sulfide content, be reduced to setting when following, can directly exploit.
To achieve these goals, technical scheme of the present invention is as follows.
The production practice that the roof and floor in sulfide hydrogen coal seam is administered, specifically comprises the following steps:
1) according to hydrogen sulfide gas, compose and to deposit mechanism, hydrogen sulfide is mainly composed and is deposited in coal seam, and in seam roof rock stratum or floor strata, content is very micro-, therefore, first by field trial, detects in roof strata and floor strata, whether to contain hydrogen sulfide gas.
2) if content is too low in roof strata, can in the roof strata apart from pre-mining coal seam 5～10m and the coal road in floor strata, arrange that series of parallel is in the measure tunnel of Seam Roof And Floor, these tunnels can cover whole back production section coal seam.
3) in these stone heads, arrange a series of drill sites, and therein to a series of layer-through drillings that can cover pre-mining coal seam of coal seam construction; In work progress for sulfide hydrogen coal seam, adopt aqueous slkali sealing means to neutralize the hydrogen sulfide gas of desorb from ickings, adopt hydrogen sulfide to administer the Special drill rear timely sealing of hole of having constructed, and inject high pressure alkaline solution in coal seam.
4) after administering, by perforate again, detect hydrogen sulfide content in coal seam, wait reaching safety value when following, can in the regional coal-seam through improvement, carry out coal road driving, after stope to be formed, exploit;
5) in recovery process, to monitor constantly the content of hydrogen sulfide gas, within the scope of safety value, tunnel and back production.
6), if detect in roof strata or floor strata, the content overproof of hydrogen sulfide, carries out after hydrogen sulfide content detection apart from the distance of Roof Rock Strata of Coal Seam or floor strata in increase, still can not be up to standard, abandon the use of this technology.
The production practice that the roof and floor in this cover sulfide hydrogen coal seam is administered mainly contains following characteristics: 1) straighten the improvement of contact hydrogen sulfide poison gas for open up measure roadway treating hydrogen sulfide in seam roof rock stratum or floor strata; 2) drilling construction is easy, and coverage is large, and the even density of boring is controlled, can adopt water-stop mode to prevent that hydrogen sulfide gas from gushing out during construction; 3) from the boring in roof and floor tunnel, easily control the frequency of flow, slip casting when injecting aqueous slkali in coal body, easily monitoring and monitoring hydrogen sulfide regulation effect simultaneously, thus reach best regulation effect.
This beneficial effect of the invention is:
1) first avoid human body and electromechanical equipment to be directly subject to the harm of hydrogen sulfide gas, protected personal safety, guaranteed the good operation of electromechanical equipment;
2) in stone head, arrange a series of drill sites, and working measure boring, then to coal seam, adopt injection high pressure base solution to carry out hydrogen sulfide improvement, ensured the safety of people and electromechanical equipment, and improved efficiency and the effect of administering hydrogen sulfide, thereby effectively reduce the content of hydrogen sulfide, reach the condition of exploitation.
3) by the enforcement of this technology, carry out, will effectively liberate the exploitation in large quantities of sulfide hydrogens coal seam, effectively raise the utilization ratio of resource.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention contains H
2s roof is administered H
2the special-purpose measure of S tunnel schematic diagram.
Fig. 2 is that the embodiment of the present invention contains H
2s roof is administered H
2the special-purpose measure of S tunnel sectional view.
Description of symbols in figure: 1, hydrogen sulfide control measures tunnel; 2, coal seam air way; 3, hydrogen sulfide is administered Special drill; 4, the large lane of return air; 5, main haulage roadway; 6, connection roadway; 7, coal seam machine lane; 8, roof strata; 9, sulfide hydrogen coal seam; 10, floor strata; 11, coal road.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described, to better understand the present invention.
Embodiment
In Fig. 1, be that the embodiment of the present invention contains H
2s roof is administered H
2the special-purpose measure of S tunnel schematic diagram.The large lane 4 of return air, main haulage roadway 5, connection roadway 6 are arranged in rock, coal seam air way 2, machine lane, coal seam 7 that stope is arranged are arranged in coal road 11, and hydrogen sulfide control measures tunnel 1 is arranged in parallel in the rock stratum of top (end) plate, they just do not have concrete title, as air way ,Ji lane etc., it only has this call of measure lane.Fig. 2 is that the embodiment of the present invention contains H
2s roof is administered H
2the special-purpose measure of S tunnel sectional view, the production practice that the roof and floor in the sulfide hydrogen coal seam based on this figure is administered, specifically comprises the following steps:
1) according to hydrogen sulfide gas, compose and deposit mechanism, hydrogen sulfide is mainly composed and is deposited in coal seam, and in seam roof rock stratum 8 or floor strata 10, content is very micro-, therefore, first by field trial, detect in roof strata 8 and floor strata 10 whether contain hydrogen sulfide gas.
2) if content is too low in roof strata 8, can be in the roof strata 8 of the pre-mining coal seam 10m of distance and floor strata 10 series of measures tunnel, cover whole coal seam.
3) in these stone heads, arrange a series of drill sites, and therein to a series of layer-through drillings that can cover pre-mining coal seam of coal seam construction.In work progress for sulfide hydrogen coal seam 9, adopt aqueous slkali sealing means to neutralize the hydrogen sulfide gas of desorb from ickings, adopt hydrogen sulfide to administer the Special drill 3 rear timely sealing of hole of having constructed, and inject high pressure alkaline solution in coal seam.
4) after administering, by perforate again, detect hydrogen sulfide content in coal seam, wait reaching safety value when following, can in the coal seam of governance for reaching standard, arrange tunnel, after stope to be formed, exploit.
5) in recovery process, to monitor constantly the content of hydrogen sulfide gas, within the scope of safety value, tunnel and back production.
6), if detect in roof strata 8 or floor strata 10, the content overproof of hydrogen sulfide, carries out after hydrogen sulfide content detection apart from the distance of Roof Rock Strata of Coal Seam 8 or floor strata 10 in increase, still can not be up to standard, abandon the use of this technology.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (1)
1. the production practice that the roof and floor in sulfide hydrogen coal seam is administered, is characterized in that: specifically comprise the following steps:
1) first by field trial, detect in roof strata and floor strata, whether to contain hydrogen sulfide gas;
2) if content is too low in roof strata, can in the roof strata apart from pre-mining coal seam 5～10m and floor strata, arrange that series of parallel is in the measure tunnel in coal seam, these tunnels can cover whole back production section coal seam;
3) in these stone heads, arrange a series of drill sites, and therein to a series of layer-through drillings that can cover pre-mining coal seam of coal seam construction; In work progress for sulfide hydrogen coal seam, adopt aqueous slkali sealing means to neutralize the hydrogen sulfide gas of desorb from ickings, adopt hydrogen sulfide to administer the Special drill rear timely sealing of hole of having constructed, and inject high pressure alkaline solution in coal seam;
4) after administering, by perforate again, detect hydrogen sulfide content in coal seam, wait reaching safety value when following, can in the regional coal-seam through improvement, carry out coal road driving, after stope to be formed, exploit;
5) in recovery process, to monitor constantly the content of hydrogen sulfide gas, within the scope of safety value, tunnel and back production;
6), if detect in roof strata or floor strata, the content overproof of hydrogen sulfide, carries out after hydrogen sulfide content detection apart from the distance of Roof Rock Strata of Coal Seam or floor strata in increase, still can not be up to standard, abandon the use of this technology.
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| CN103615248B CN103615248B (en) | 2016-03-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005766A (en) * | 2014-05-12 | 2014-08-27 | 山西蓝焰煤层气集团有限责任公司 | Chemical method for weakening of top coal |
| CN104110270A (en) * | 2014-07-07 | 2014-10-22 | 辽宁工程技术大学 | Method for controlling coal bed sulfuretted hydrogen in dynamic alkali injection mode |
| CN104819009A (en) * | 2015-05-06 | 2015-08-05 | 四川达竹煤电(集团)有限责任公司斌郎煤矿 | Closed excavation roadway opening and high concentration hydrogen sulfide and gas treatment method |
| CN105507907A (en) * | 2016-01-29 | 2016-04-20 | 中铁一局集团有限公司 | Method for reducing hydrogen sulfide emission in tunnel construction |
| CN105587326A (en) * | 2016-01-29 | 2016-05-18 | 中铁第一勘察设计院集团有限公司 | Multiple waterproof duct piece structure for tunnel through shield method or TBM method |
| CN106050236A (en) * | 2016-07-08 | 2016-10-26 | 中国矿业大学 | Method for desulfurization in the coal mining process |
| CN109488374A (en) * | 2018-10-17 | 2019-03-19 | 新汶矿业集团有限责任公司 | The comprehensive management of technology of hydrogen sulfide in a kind of coal working face |
| CN112983535A (en) * | 2021-03-16 | 2021-06-18 | 重庆大学 | Soft, low-permeability and high-hydrogen sulfide coal seam zoning drilling, cutting and alkali injection treatment construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005766A (en) * | 2014-05-12 | 2014-08-27 | 山西蓝焰煤层气集团有限责任公司 | Chemical method for weakening of top coal |
| CN104110270A (en) * | 2014-07-07 | 2014-10-22 | 辽宁工程技术大学 | Method for controlling coal bed sulfuretted hydrogen in dynamic alkali injection mode |
| CN104110270B (en) * | 2014-07-07 | 2016-05-04 | 辽宁工程技术大学 | A kind of dynamic note alkali is administered the method for coal seam hydrogen sulfide |
| CN104819009A (en) * | 2015-05-06 | 2015-08-05 | 四川达竹煤电(集团)有限责任公司斌郎煤矿 | Closed excavation roadway opening and high concentration hydrogen sulfide and gas treatment method |
| CN105507907A (en) * | 2016-01-29 | 2016-04-20 | 中铁一局集团有限公司 | Method for reducing hydrogen sulfide emission in tunnel construction |
| CN105587326A (en) * | 2016-01-29 | 2016-05-18 | 中铁第一勘察设计院集团有限公司 | Multiple waterproof duct piece structure for tunnel through shield method or TBM method |
| CN106050236A (en) * | 2016-07-08 | 2016-10-26 | 中国矿业大学 | Method for desulfurization in the coal mining process |
| CN109488374A (en) * | 2018-10-17 | 2019-03-19 | 新汶矿业集团有限责任公司 | The comprehensive management of technology of hydrogen sulfide in a kind of coal working face |
| CN112983535A (en) * | 2021-03-16 | 2021-06-18 | 重庆大学 | Soft, low-permeability and high-hydrogen sulfide coal seam zoning drilling, cutting and alkali injection treatment construction method |
| CN112983535B (en) * | 2021-03-16 | 2022-06-03 | 重庆大学 | Soft, low-permeability and high-hydrogen sulfide coal seam zoning drilling, cutting and alkali injection treatment construction method |
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| CN103615248B (en) | 2016-03-09 |
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