隆德煤矿1煤层掘进安全可行性研究

Study on the feasibility of safe drivage of No.1 coal seam in Longde mine

隆德煤矿第四系松散含水层厚度在10～40m之间，距离下方赋存的1煤层、2煤层较近，成胁着煤层巷道掘进乃至开采。通过对矿井涌水量、区域构造分布情况、水位观测台账、围岩松动影响等方面分析、论证，1煤层的2条水平大巷与北翼3条大巷掘进是安全的。

In Longde coal mine, the coal seam roadway drivage and mining is threatened by the quaternary unconsoli- dated aquifer thickness between 10 and 40m and the hydro - geology from weak to medium, which is close the occur- rence of 1, 2 coal seam below. Based on the researches and justifications of the mine water inflow, regional structure distribution, water level observation parameter and fractured rock zone, the drivage of two horizontal lanes and three ones in north is safe.