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山东平邑凹陷盆地内石膏资源丰富,自20世纪80年代起,区内石膏开采持续不断,随着开采范围的不断扩大,形成了大面积采空区,地面塌陷时有发生。2015年12月25日,平邑县玉荣石膏矿、万枣石膏矿范围内发生大面积塌陷,造成29名矿工被困。在施救过程中,遇到诸多水文地质问题,如灰岩含水岩组富水性增强;矿坑水补给条件改变;膏上灰岩岩溶水对采空区的大量补给;矿区南侧老窿水的威胁和岩溶塌陷等,直接影响了救援工作的顺利开展。针对在救援过程中出现的以上问题进行了综合分析研究,总结了救援过程中采取的多种防治措施和经验及教训,为同类矿山事故救援提供一定借鉴。
Since the 1980s, gypsum mining in the area has continued. With the continuous expansion of the mining area, a large area of gob is formed, and the collapse of the ground occurs from time to time. December 25, 2015, Pingyi County, Yurong gypsum mine, Wan Ju gypsum mine within a large area collapse occurred, killing 29 miners trapped. In the rescue process, encountered many hydrogeological problems, such as the rich water-rich limestone aquifer group; pit water supply conditions change; limestone karst water on the gob of a large amount of recharge; Threats and karst collapse directly affect the smooth implementation of the rescue work. Aiming at the above problems occurred in the rescue process, a comprehensive analysis and study was conducted to summarize the various prevention measures and experiences and lessons learned in the rescue process and provide some reference for the rescue of similar mine accidents.