承压水上采煤的流固耦合数值模拟  

The Fluid-solid Coupling Numerical Simulation of Mining Above Confined Water

作　　者：李文敏[1] 高召宁[1] 孟祥瑞[1] 张风达[1] 李琦[1] 袁林[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤矿安全》2013年第2期57-60,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51074003;51074005);国家自然科学基金委员会与神华集团有限公司联合资助项目(51174255);安徽省优秀青年科技基金资助项目(10040606Y31);中国博士后科学基金资助项目(2011M501037)

摘　　要：结合某受承压水威胁工作面的具体工程地质资料,利用FLAC3D软件强大的流固耦合功能,建立该带压开采工作面的数值分析模型并进行流固耦合数值模拟。通过数值模拟结果,分析不同开挖长度时煤层底板岩层的位移、应力分布规律及含水层承压水在隔水层中的导升高度。结合"下三带"理论,看在承压水作用下,是否存在完整隔水层,以判断工作面在采煤过程中是否会发生突水事故。对承压水上采煤的流固耦合数值模拟具有一定的参考作用。In combination with the specific engineering geological conditions of some mining faces which were under the threat of con-fined water, the powerful fluid - solid coupling function of FLAC3D software is used to have a fluid - solid coupling numerical simulation in the mining face, and the coal floor rock strata displacement in mining process, stress distribution laws and progressive intrusion height of aquifer confined water in aquifuge are anlyzed through the simulation results. Combined with the ＂down three zones＂ theory, whether there is a complete aquifuge under the action of confined water is used to judge whether work face will burst water or not,which have certain reference function to fluid - structure eoupling numerical simulation above water .

关 键 词：流固耦合 带压开采 “下三带”理论 底板破坏特征 

分 类 号：TD745[矿业工程—矿井通风与安全]