煤矿底板采动突出水体运移特征的数值分析  

Numerical Analysis of the Seepage Law of Inrush Water from Coal-seam Floor

作　　者：杨登峰[1] 陈忠辉[1] 李博[1] 刘鑫[1] 高钦[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《煤矿开采》2015年第6期101-104,共4页Coal Mining Technology

基　　金：国家重点基础研究发展规划(973)项目(2013CB227903);国家自然科学基金项目(51174208;U1361209)

摘　　要：针对煤矿底板采动突水过程中采空区底板破坏的不同阶段突水量存在明显差别的特征,根据损伤岩体的流固耦合作用,应用RFPA2D-flow数值模拟软件,结合回坡底煤矿11号煤层开采工作面的具体工程地质条件,对在采动应力和承压水压力联合作用下底板的损伤、破坏直至突水的全过程进行了数值模拟研究。通过对工作面推进过程中底板的破坏过程、应力变化和渗流场的分析,揭示了突出水体的运移规律,将底板突水区域划分为突水减量减速区、突水量陡增区、突水量平稳增加区和突水流量缓降区4个区域,从而确定了应重点防治的突水危险区域。研究结果对工程中的防治水实践具有一定的指导意义。In view of the floor water bursting in coal mining process,floor water inrush damages the existence of regional spatial distribution characteristics. Considering the fluid solid coupling effect of damage rock mass,the simulation software RFPA^2D-flow is applied,combined with the specific engineering geological conditions of Huipodi coal mine working face,studied the process should be combined with force and pressure of confined water under the bottom of the damage,damage to the mining water inrush to numerical,distribution of destroyed floor water inrush area space,division and analysis. The water inrush area are divided to 4 areas,they are the decreased water inrush zone,the sharply increased water inrush zone,the steadily increased water inrush zone,the slowly decreased water inrush zone,and the water inrush hazard area were determined. The study results are guiding significance for the prevention and control of water engineering practice.

关 键 词：底板 采动应力 渗流场 数值分析 

分 类 号：TD742.2[矿业工程—矿井通风与安全]