岩体水-岩耦合作用研究简述

Introduction of the Study on the Water and Rock Coupling in Rock Mass

系统阐述了水-岩耦合作用机理、理论研究及工程应用。水与岩体之间发生物理、化学和力学作用,使得岩体孔隙发生骤变,从而改变水的流态。介绍了水-岩耦合模型的建模方法即机理分析法、混合分析法和系统辨识方法。对裂隙岩体渗流计算的几个典型模型进行了较详细的分析和比较,等效连续介质模型可应用成熟的孔隙型介质渗流分析方法,但不能反映裂隙的特殊导水性,并且还需满足一定条件;裂隙网络介质模型能较真实的反映裂隙实际渗流状态,但裂隙几何参数难以获得;多重介质渗流模型综合了等效连续介质和裂隙网络介质模型的优点,具有广阔的研究前景。简要介绍了水化学-应力耦合研究现状。对耦合模型数值计算方法即迭代耦合法和直接耦合法进行了分析。最后就水-岩耦合研究存在的一些问题及今后的发展方向提出自己的看法。

The mechanism, the theory and the engineering application of water and rock coupling are systematically expounded. The interactions between water and rocks include the physical, chemical and mechanical actions which change the flow pattern of water. The methods of modeling including the mechanism analytical method, the mixed analytical method and the systematical identified method for water and rock coupling are introduced. The advantages, disadvantages and limited conditions of the typical models for seepage calculation in fracture rock are analyzed and compared in detail. The status and the research prospect of hydro-chemical and stress coupling are introduced, and the numerical calculation methods including iterative method and direct method are analyzed. Some problems existed in the research on water and rock coupling and the development orientation are put forward.