Study on the hydrogeological conditions and prevention of water invasion hazard in deep engineering of Yingping phosphate mine in Fuquan City of Guizhou Province
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摘要: 采用先分析后逐层深入的方法,对福泉市英坪磷矿区水文地质条件进行了分析,选择矿区南风竖井工程附近断层、节理裂隙等发育的富水区域,采用大口径钻孔抽排地下水,利用抽排形成的补给漏斗对地下水静水压力、水位、补径排等进行干预,摸清了矿区地下水补径排规律,查明了造成深部采掘工程施工突水的主要因素及途径。研究认为,在断裂和节理裂隙发育的富水区进行大口径钻孔抽排可达到抽排疏干效果,能够较好地解决突水危害,是治理矿山突水危害十分有效的措施。该防治技术方法在该地区类似矿山建设中具有较大的推广意义。Abstract: The hydrogeological conditions of Yingping phosphate mining area in Fuquan City were analyzed through the method of analysis and further study. The water-rich areas, where faults, joints and fissures developed near the south wind shaft project, were selected, and the hydrostatic pressure, water level, filling diameter and drainage of underground water were intervened to investigate the recharge funnel formed by pumping and draining and to ascertain the main causes and approaches of water invasion by the deep excavation project. The results show that the drainage of large-caliber boreholes in the water-rich areas with developed faults and joints can achieve the draining effect, which could solve the water invasion hazard and be considered as an effective measure. The prevention and control method has great promoting significance in the construction of similar mines in the region.
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