摘要
针对本煤层顺层钻孔抽采量低,钻孔抽采量衰减快,严重影响了本煤层瓦斯抽采的达标时间,通过顺层钻孔水力化增透措施,单孔抽采纯流量是普通孔的2~4倍,抽采流量衰减期较普通钻孔延长,这对于缩短工作面的抽采达标时间,缓解矿井的抽—掘—采衔接,以及保证工作面的安全高效回采,都具有重要的指导意义。
In view of the low extraction volume and the rapid attenuation of the drilling extraction volume in this coal seam,which seriously affects the standard time of the coal seam gas extraction,through the hydraulic permeability enhancement measures of the bedding drilling,the pure flow rate of single hole extraction is 2~4 times that of ordinary holes,and the attenuation period of pumping flow is longer than that of ordinary drilling,which has important guiding significance for shortening the extraction time of the working face,alleviating the pumping-excavation-mining connection of the mine,and ensuring the safe and efficient mining of the working face.
作者
王鹏
WANG Peng(Yuwu Coal Industry Company,Shanxi Lu′an Chemical Group Co.,Ltd.,Changzhi 046100,China)
出处
《煤炭科技》
2024年第5期101-104,109,共5页
Coal Science & Technology Magazine
基金
岳文萍—青年科学基金项目(52104222)。
关键词
顺层钻孔
超高压
水力造穴
抽采流量
bedding drilling
ultra-high pressure
hydraulic cave-making
extraction flow
