工作面水害治理技术及效果考察

为确保8716工作面防治水安全,结合晋华宫煤矿8716工作面地质条件和涌水量,对工作面实施地面排水孔和工作面疏水孔进行排水。排出7号煤层采空区积水累计约505.04万m³后,经地面物探和钻探孔验证,发现8716工作面上覆7号煤层采空区内已无大范围的积水,可对工作面进行回采,但回采过程中应加强涌水量观测。

Water disaster control technology and effect investigation in working face

To ensure the safety of water control in 8716 working face,combined with the geological conditions and water inflow of 8716 working face in Jinhuagong Coal Mine,the surface drainage holes and drainage holes of working face were implemented for drainage.After discharging the accumulated water of 5.0504 million m³in the goaf of No.7 coal seam,through the verification of ground geophysical exploration and drilling holes,it was found that there was no large-scale ponding in the goaf of No.7 coal seam overlying 8716 working face,so the working face can be mined,but the observation of water inflow should be strengthened during the mining process.