露天矿边坡岩体渗透特性及疏干排水模拟分析

边坡岩体的渗透特性和排水效果分析是露天矿边坡疏干排水设计的技术关键．以现场典型岩体结构面调查为依据，建立了离散介质渗流模型，计算了表征单元体的等效渗透系数张量，应用边界元数值法模拟研究了不同渗透张量情况下的疏干排水效果．分析表明，该技术途径不但适合边坡岩体宏观渗流分析的特点，而且能够较为深刻的认识裂隙渗流的本质，为露天矿边坡疏干排水优化设计提供了理论依据．

RESEARCH INTO THE PERMEATION CHARACTER OF THE OPENCAST SIDE SLOPE ROCK MASS AND THE SIMULATION OF UNDERGROUND DRAINAGE

The analysis of the permeation character of slope rock and dewatering effect is a technic key to unwatering and dewatering design of strip mine slope. With the field survey of rock mass structural faces as the basis, the discrete mediator permeation model is set up, a calculation of the REV(Representative Element Volume) equivalent permeation tensor is conducted, and the boundary element method is used to simulate and investigate the underground drainage effectiveness of different permeation tensor conditions. Analysis indicate that this technic path not only adapts slope rock macrography permeation character, but also can get a better and in depth understanding of the fracture seepage nature, it provides the theory basis for an optimized design of drainage control schemes with the approach.