突水断层水量预测的数值模拟  

Numerical Simulation of Forecasting Water Inrush Volume from Fault

作　　者：杨国勇[1] 车灿辉[1] 刘树才[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2010年第3期351-355,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2007CB209400)

摘　　要：基于对断层形态、产状要素、力学性质及断层导水性质的认识,分析了断层突水通道形成的影响因素,认为在水压与多次应力的作用下,裂隙的导水性变化与时间存在指数关系;给出了突水量预测的变参数渗流模型,并对赵各庄矿9水平东翼石门突水事故的突水量进行了模拟.计算结果表明:与一般渗流模型相比,变参数渗流模型能够模拟出突水量的变化过程,用于描述滞后突水或涌水具有合理性,更适合于分析突水水源、突水通道及突水量之间的变化关系.Based on the knowledge of faults configuration, physico-mechanical parameters of faults, and hydraulic conductivity of faults, we analyze the factors affecting the formatting of fault being as water-inrush channel. The relationship between the conductivity of fracture and the time is an exponential function under the repeated action of stress and water pressure. On this basis, we give a variable parameter flow model for forecasting the volume of water inrush. This model is applied in the numerical simulation of a water inrush accident occurred at the east wing crosscut in the 9th level of Zhaogezhuang coal mine. The results show that, in comparison to general flow model, our model can simulate the changing process of water inrush volume and can describe the lag phenomenon of water inrush. So this model is more suitable to analysze the relationship between water inrush sources, water inrush channel, and water inrush volume.

关 键 词：突水量 预测 断层 变参数渗流模型 数值模拟 

分 类 号：TD742[矿业工程—矿井通风与安全]