Poly Energies Holding Company Limited School of Geosciences and Surveying Engineering,China University of
Mining and Technology( Beiing)

为掌握含水层煤层的水文地质情况,以满足下组煤带压开采的需要,以铁新煤砂原有水文地质资料为依据,综合利用地面物探、水文地质钻探、抽水试验、水文测井、水质分析等勘查手段,探测研究了矿区井田的水文地质条件、富水性及太灰与下伏奥灰岩溶水之间的水力联系。结果表明:9号煤层底板突水系数均小于0.06 MPa/m,全区处在安全区,9号煤层能够安全开采。10号和11号煤层底板危险性按突水系数可分为2个区:突水系数小于0.06 MPa/m,在正常地段可安全开采,而突水危险区,必须采取有效的防治水措施才能进行安全开采。

In order to have the hydrogeological conditions of the aquifer and seam to meet the requirements of the pressurized coal mining in the low seam formation, based on the previous hydrogeological information as the basis,the ground geophysical exploration,hydrogeological drilling exploration,water pumping test,hydrclogic loggi ng,water quality analysis and other survey means were comprehensively applied to the detection study on the hydrogeological condition,watery and the hydraulic relationsh ip between the Taiyuan formation limestone and the underlying Ordovician limestone karst water. The results showed that a water inrush coefficient of No. 9 seam floor was less than 0.06 MPa 1 m,the whole block was in a safety block and No. 9 seam could be safely mined. Based on the water inrush coefficient,the danger of No. 10 ands No. 11 seam floors could be divided into two blocks. With the water inrush coefficient less than 0.06 MPa 1 m,the normal section of the seam could be safely mined. In the wate r inrush danger block,the effective water prevention and control measures could be conducted for the safety mining.