矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2013年
3期
65-69
,共5页
被保护层%下向钻孔%瓦斯抽采
被保護層%下嚮鑽孔%瓦斯抽採
피보호층%하향찬공%와사추채
protected seam%downward borehole%gas drainage
针对皖北矿区祁东煤矿中近距离上保护层沿空留巷开采时被保护层煤巷条带瓦斯抽采问题,采用理论分析、现场试验等方法,研究了下向抽采钻孔的排渣、成孔、护孔、封孔、排水等工艺,并进行了下向钻孔排水工艺、瓦斯抽采效果考察,总结出瓦斯抽采、钻孔排水等成套技术.
針對皖北礦區祁東煤礦中近距離上保護層沿空留巷開採時被保護層煤巷條帶瓦斯抽採問題,採用理論分析、現場試驗等方法,研究瞭下嚮抽採鑽孔的排渣、成孔、護孔、封孔、排水等工藝,併進行瞭下嚮鑽孔排水工藝、瓦斯抽採效果攷察,總結齣瓦斯抽採、鑽孔排水等成套技術.
침대환북광구기동매광중근거리상보호층연공류항개채시피보호층매항조대와사추채문제,채용이론분석、현장시험등방법,연구료하향추채찬공적배사、성공、호공、봉공、배수등공예,병진행료하향찬공배수공예、와사추채효과고찰,총결출와사추채、찬공배수등성투기술.
To counter the problem of gas drainage from the strip mining region of the protected seam gateway when the medium-short-interval upper protective seam was mined with the gateway retained along the gob in Qidong Mine of Wanbei Coal Mining Area, study was carried out by theoretical analysis and site test on the technologies of drilling downward gas drainage holes, including the cutting handling, hole drilling, hole protection, hole packing, hole water removing and so on, and the effect investigation on the hole water removing and gas drainage processes was also conducted. Finally, a complete set of technologies for gas drainage and hole water removing was summarized.
