After the closing of Shexingping mining area in ShiZhuYuan ( SZY) Multi-metal Mine, the abandoned mining area has been submerged by the water of GaoFeng Reservoir .So the goafs full of water below GaoFeng Res-ervoir have became the hazard for the remaining area of SZY .However , the safety pillar under the reservoir has been destroyed by illegal mines , and things are getting even worse .To eliminate this hazard , based on the fluid-solid coupling equation of finite difference method , numerical simulation was used to access the stability of water-proof pillar and 53#goaf.Furthermore, 104 events which might trigger water inrush accidents were found out by qualitative fault tree analysis method .The risk level of water inrush was analyzed , and some countermeasures were put forward , and this case could be a successful experience for mining underwater body .%湖南柿竹园多金属矿老蛇形坪矿区闭坑后被高峰水库淹没，周边民采矿点超深越界偷采井下保水矿柱，形成了高峰水库下积水采空区透水隐患。为了保证临近矿区安全开采，消除采空区透水隐患，在三维流固耦合有限差分数值模拟的基础上，对53＃关键采空区和18m隔水矿柱的稳定性进行了分析，采用事故树法排查了可能发生出突水事故的104种基本事件，分析了高峰水库重大安全隐患的风险等级，并提出了隐患治理对策，可为水下开采的矿山突水安全评估及治理提供参考。
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