棋盘井矿综采工作面煤层注水工艺研究
发布时间：2019-06-09 13:05
【摘要】：针对棋盘井矿综采工作面粉尘危害严重的情况,对该矿Ⅰ020902工作面进行了煤层注水试验,从煤的原有水分含量、孔隙率、自然吸水率、坚固性系数4个方面对该矿煤层是否适合注水进行了实验分析。为了取得更好的除尘效果,从钻孔参数、注水参数、封孔技术进行了优化对比。现场试验结果表明,在注水压力7 MPa、钻孔间距15 m、单孔注水量370 m~3、注水流量2.1 m~3/h、单孔注水时间8 d、同时注水钻孔数量3个,以及用水泥—水玻璃封孔、封孔深度8 m时,煤层注水除尘效果较好,工作面全尘降尘率能达到86.38%,呼吸性粉尘降尘率能达到75.94%。
[Abstract]:In view of the serious dust harm in the fully mechanized mining face of Chipan well Mine, the coal seam water injection test was carried out in the I 020902 working face of the mine, from the original water content, porosity and natural water absorption of the coal, The experimental analysis of whether the coal seam is suitable for water injection is carried out from four aspects of firmness coefficient. In order to obtain better dust removal effect, the drilling parameters, water injection parameters and sealing technology are optimized and compared. The field test results show that at the injection pressure of 7 MPa, the hole spacing is 15 m, the water injection volume per hole is 370 m 鈮，
本文编号：2495576
[Abstract]:In view of the serious dust harm in the fully mechanized mining face of Chipan well Mine, the coal seam water injection test was carried out in the I 020902 working face of the mine, from the original water content, porosity and natural water absorption of the coal, The experimental analysis of whether the coal seam is suitable for water injection is carried out from four aspects of firmness coefficient. In order to obtain better dust removal effect, the drilling parameters, water injection parameters and sealing technology are optimized and compared. The field test results show that at the injection pressure of 7 MPa, the hole spacing is 15 m, the water injection volume per hole is 370 m 鈮，
本文编号：2495576
本文链接：https://www.wllwen.com/kejilunwen/anquangongcheng/2495576.html
