论文部分内容阅读
合山煤田是典型的岩溶充水矿床,矿井开采水害严重。煤层的直接顶、底板为碳酸盐岩类,岩溶极为发育,为矿井的直接充水含水层;煤层底部的茅口组为强岩溶含水层,与煤系地层的联系密切,为间接充水含水层;位于煤田西侧的红河水是矿井充水最主要的补给水源。断裂、节理和破碎带等通道是矿井充水的主要通道。通过分析井下突水点的发育特征,认为强岩溶导水带是矿井突水的关键部位,防治矿井水害的重点是切断岩溶导水带,对强导水带进行封堵,防止红水河的侧向补给,对四煤底板灰岩进行加固。总结出地面防治的主要方法为帷幕式、截堵式、堵水点式和地面铺盖式。对井下防治水,提出了有疑必探,先探后掘,设置防水闸门、防水墙,实行分层、分区开采,加强井下排水等防治措施。
Heshan coalfield is a typical karst waterflooding deposits, mining serious water hazards. The direct top and bottom of the coal seam are carbonate rocks with extremely developed karst, which is the direct water-filled aquifer of the mine. The Maokou Formation at the bottom of the coal seam is a strong karst aquifer, which is closely linked with the coal measure strata, Aquifer; Honghe water located on the west side of coalfield is the most important water supply source for mine water filling. Channels such as faults, joints and fractures are the main channels for water filling in mines. By analyzing the development characteristics of the water inrush point, it is considered that the strong karst aqueduct is the key part of the mine water inrush. The key point to prevent and control the mine water damage is to cut off the karst water-conducting belt and block the strong aqueduct, Lateral recharge, the four coal floor limestone reinforcement. Summed up the main methods of prevention and control of the ground curtain type, plugging type, plugging type and floor coverings. On the prevention and treatment of water in the underground, put forward the doubt exploration, first explore after digging, set the waterproof gate, waterproof wall, the implementation of stratified, sub-mining, strengthen underground drainage and other prevention and control measures.