矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
4期
73-76
,共4页
瓦斯立体抽采技术%突出厚煤层群%下保护层开采%回采工作面%瓦斯综合治理
瓦斯立體抽採技術%突齣厚煤層群%下保護層開採%迴採工作麵%瓦斯綜閤治理
와사입체추채기술%돌출후매층군%하보호층개채%회채공작면%와사종합치리
three-dimensional gas drainage technology%thick outburst coal seam group%lower protective seam extraction%working face%comprehensive gas prevention and control
突出厚煤层群采用下保护层作为区域防突措施时，上下邻近层的瓦斯大量涌入工作面而造成瓦斯浓度超限，给矿井的安全生产带来极大隐患。为了解决这一问题，乌兰煤矿在域020703工作面采用地面钻井、高位钻孔、工作面顺层钻孔、底板穿层钻孔和采空区埋管等措施，对工作面瓦斯涌出源头进行了立体化综合抽采。试验表明，瓦斯立体抽采技术能有效地解决突出厚煤层群保护层开采时的瓦斯浓度超限问题，为其他类似条件的矿井提供了技术参考。
突齣厚煤層群採用下保護層作為區域防突措施時，上下鄰近層的瓦斯大量湧入工作麵而造成瓦斯濃度超限，給礦井的安全生產帶來極大隱患。為瞭解決這一問題，烏蘭煤礦在域020703工作麵採用地麵鑽井、高位鑽孔、工作麵順層鑽孔、底闆穿層鑽孔和採空區埋管等措施，對工作麵瓦斯湧齣源頭進行瞭立體化綜閤抽採。試驗錶明，瓦斯立體抽採技術能有效地解決突齣厚煤層群保護層開採時的瓦斯濃度超限問題，為其他類似條件的礦井提供瞭技術參攷。
돌출후매층군채용하보호층작위구역방돌조시시，상하린근층적와사대량용입공작면이조성와사농도초한，급광정적안전생산대래겁대은환。위료해결저일문제，오란매광재역020703공작면채용지면찬정、고위찬공、공작면순층찬공、저판천층찬공화채공구매관등조시，대공작면와사용출원두진행료입체화종합추채。시험표명，와사입체추채기술능유효지해결돌출후매층군보호층개채시적와사농도초한문제，위기타유사조건적광정제공료기술삼고。
When the extraction of the lower protective seam is used as a regional outburst prevention measure for the group of thick coal seams, a large amount of methane in its upper and lower adjacent seams emitted into the working face, which often caused gas overrun and brought great hidden danger to the safe production of the mine. For solving this problem, three-dimensional gas drainage from the gas emission source in II020703 working face in Wulan Mine was carried by taking some outburst prevention measures in this face including the surface boreholes, high-level boreholes, boreholes along the seam, crossing boreholes in the floor and the gob management. The tests showed that the three-dimensional gas drainage technology can effectively solve the problem of gas overrun in the extraction of the protective seam of the group of thick coal seams, and this thus provided technical reference for other mines with similar conditions.
