裂隙岩体渗流模型研究现状与展望

裂隙岩体渗流对于边坡、地下工程及基础岩土体的承载能力有显著的制约作用。本文简要地介绍了多种裂隙岩体渗流模型研究现状,评述了几类比较有代表性的渗流模型特点以及存在的不足,为选取合理的数学模型用于求解具体的裂隙岩体渗流问题提供了参考依据,并在上述基础上提出了一些需要进一步研究的问题。指出就目前应用最为广泛的等效连续介质模型而言,裂隙岩体几何参数、有效孔隙度以及等效渗透张量的确定仍有待于更深入的研究,而从细观力学结构入手研究渗流耦合模型将具有重大的理论意义和实用价值。

CURRENT RESEARCH AND PROSPECTS IN MODELING SEEPAGE FIELD IN FRACTURED ROCK MASS

Fracture of rock mass is quite important and exists broadly in geotechnical engineering such as slope ,underground and foundation construction. It is got more and more regarded by engineers. The stability of slope and rock mass bearing capacity of building foundation are influenced by seepage in the mass. A variety of methods for analyzing seepage flow in fractured rock mass are introduced and discussed in brief. These analyses provide references for the selection of proper mathematical models to solve specific seepage flow in fractured rock masses. Some problems are put forward which need to be further investigated. The equivalent continuum model at present is widely used. However, the fractured rock mass geometry parameter and efficiency hole degree and coefficient of permeability are still awaiting to be examined furthermore. Micromechanics coupled with seepage model would have great theorical value.