山西煤炭
山西煤炭
산서매탄
SHANXI COAL
2015年
3期
36-37,52
,共3页
抽放半径%瓦斯%瓦斯含量
抽放半徑%瓦斯%瓦斯含量
추방반경%와사%와사함량
drainage radius%gas%gas content
通过对寺河煤矿二号井顺层钻孔抽放半径的测定,根据预抽时间不同,为顺层钻孔的设计和布置提供主要依据,使得采掘工作面瓦斯得到有效治理,避免了在设计顺层钻孔过程中出现抽放空白带和钻孔的无效重叠。
通過對寺河煤礦二號井順層鑽孔抽放半徑的測定,根據預抽時間不同,為順層鑽孔的設計和佈置提供主要依據,使得採掘工作麵瓦斯得到有效治理,避免瞭在設計順層鑽孔過程中齣現抽放空白帶和鑽孔的無效重疊。
통과대사하매광이호정순층찬공추방반경적측정,근거예추시간불동,위순층찬공적설계화포치제공주요의거,사득채굴공작면와사득도유효치리,피면료재설계순층찬공과정중출현추방공백대화찬공적무효중첩。
According to different pre-drainage time, measurement of drainage radius of boreholes along No.2 coal seam in Sihe mine provided main evidences for design and distribution of the boreholes, which could effectively control the gas on the mining face and avoid invalid overlap occurring between drainage blank belt and the boreholes in the drilling process.