摘要
通过构建Darcy-Forchheimer流动的耦合分析数值模型,研究了在断层突水后的含水层、断层和裂隙带中的孔隙度、渗透率和体积应变在流体-固体耦合下的演化规律,揭示了断层突水的机制。对含水层、断层裂隙带和裂隙带进行了区域注浆,获得了区域注浆过程中截面流速的演变机制。模拟结果表明,Forchheimer方程可以有效模拟地下水在高流速条件下的流动过程。压力-渗流耦合对断层中的非Darcy流动特征的影响显著。通过对不同注浆位置的模拟分析,获得了注浆过程中流速的变化规律,这对选择适当的注浆位置和优化注浆技术具有重要意义。
Through the construction of Darcy Forchheimer flow coupling analysis numerical model,the evolution laws of porosity,permeability and volume strain in aquifer,fault zone and fracture zone after fault water inrush under fluid-solid coupling were studied,and the mechanism of fault water inrush was revealed.The aquifer,fault fracture zone and fracture zone were grouting,and the evolution mechanism of cross section velocity during the grouting process was obtained.The simulation results show that the Forchheimer equation can effectively simulate the flow process under high water pressure and high velocity.The coupling of pressure and seepage has a significant effect on the non-Darcy flow characteristics in the fault.Through the simulation analysis of different grouting positions,the variation law of the flow velocity during the grouting process is obtained,which is of great significance for selecting the appropriate grouting position and optimizing the grouting technology.
作者
赵星晨
ZHAO Xingchen(Shanxi Xinyuan Coal Co.,Ltd.,Jinzhong 045400,China)
出处
《陕西煤炭》
2025年第7期58-63,共6页
Shaanxi Coal
关键词
断层突水
断层构造
断层注浆
水害防治
fault water inrush
fault structure
fault grouting
water hazard control
