论文部分内容阅读
张双楼矿东风井东一采区回风石门,施工中穿过的泥岩、砂质泥岩、细砂岩及煤层。此石门处于-260米回风水平,由于距表土层较近,局部岩石风化破碎,特别是煤层,在揭开煤层时有煤水一起涌出的危险(在东风井马头门西总回风巷施工时,掘至距井筒5米处,巷道顶部揭开煤底板面积约0.8米~2,表土层水顺煤底板进入巷道,涌水量达50吨/小时,煤水一起涌出,出煤100多罐,最后不得不将巷道封闭10个月,后采取注浆封水、巷道拐弯撇开煤层等措
Zhang Shuanglou East Dongfeng Dong mine a return zone stone door, construction through the mudstone, sandy mudstone, fine sandstone and coal seam. The Shihmen at a level of -260 m return air, due to the close to the surface soil, local rock weathering and crushing, especially the coal seam, coal seam in the coal seam when the danger of gushing together Lane construction, dig up to 5 meters away from the wellbore, the top of the roadway opened the coal floor area of about 0.8 m ~ 2, top soil water along the coal floor into the roadway, water inflow of 50 tons / hour, together with the water gushing out of coal More than 100 cans, and finally had to close the roadway for 10 months, after the grouting seal, roadway turns aside the coal measures