摘要
文中根据洼东煤矿“三软”地层条件,用有限元设计了村下采、留宽的条带开采方案,用概率积20 m20 m分法进行了地表移动与变形计算。采用该开采方案后,共采出煤万,实现余万元产值,万元利税。开采后,由地表移动监测数据可9.6t1000280知;地表最大下沉,最大水平移动,地表变形在级之内,取得了“三软”岩层村下开采成功经验。157 mm68
In view of the 'three Soft' rock layer inWadong Coal Mine, a strip-mining plan of 20m mining width and 20mremaining width is designed with finite element method, and sufacemovement and deformation cakulation is made with probability integralmethod. Altogethe 96,000t of coal is prodeuced. The output value is over10 million yuan,and the profit tax is 2.8 million yuan. After minting it can be known from the maoitor data of suface movement that the maximum subsedence of surface is 157mm and the maximum horizontal movement is 68mm.The surface deformation is of level 1.The experience of mining under village with 'three soft' rock layer has beensuccessfully gained
出处
《矿山测量》
2001年第3期25-27,4,共3页
Mine Surveying
