【摘要】：針對棋盤井礦綜采工作面粉塵危害嚴(yán)重的情況,對該礦Ⅰ020902工作面進(jìn)行了煤層注水試驗,從煤的原有水分含量、孔隙率、自然吸水率、堅固性系數(shù)4個方面對該礦煤層是否適合注水進(jìn)行了實(shí)驗分析。為了取得更好的除塵效果,從鉆孔參數(shù)、注水參數(shù)、封孔技術(shù)進(jìn)行了優(yōu)化對比�，F(xiàn)場試驗結(jié)果表明,在注水壓力7 MPa、鉆孔間距15 m、單孔注水量370 m~3、注水流量2.1 m~3/h、單孔注水時間8 d、同時注水鉆孔數(shù)量3個,以及用水泥—水玻璃封孔、封孔深度8 m時,煤層注水除塵效果較好,工作面全塵降塵率能達(dá)到86.38%,呼吸性粉塵降塵率能達(dá)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，

本文編號：2495576