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岩石节理应力–渗流耦合特性对岩体工程的稳定性有显著影响,是近20 a来岩石力学的热点问题之一。室内的岩石节理应力–渗流耦合试验是研究节理应力–渗流耦合特性的有效手段,而节理应力–渗流耦合试验系统是进行试验研究的基础条件。从三方面总结国内外节理应力–渗流耦合试验系统的研究进展:(1)节理剪切过程中常法向刚度(CNS)应力边界条件的实现;(2)节理法向应力–渗流耦合试验系统的研究进展;(3)节理全剪切–渗流耦合试验系统的最新进展,包括渗流边界条件的实现、剪切盒密封新技术以及高渗透水压的实现。在分析现有节理全剪切–渗流试验系统不足的基础上,根据目前深部地下工程中所遇到的高应力、高渗透水压情况,提出了节理全剪切–渗流耦合试验系统新的发展方向。
The stress-seepage coupling characteristics of rock joints have a significant influence on the stability of rock mass engineering, which is one of the hot issues in rock mechanics in recent 20 years. The laboratory rock-soil stress-seepage coupling test is an effective method to study the stress-seepage coupling of joints. The joint stress-seepage coupling test system is the basis for experimental study. The research progress of the stress-seepage coupling test system at home and abroad is summarized from three aspects: (1) the realization of the stress normal boundary conditions of normal normal stiffness (CNS) in the process of joint shear; (2) the joint stress- (3) The latest development of joint shear-seepage coupling test system, including the realization of seepage boundary conditions, the new technology of shear box sealing and the realization of high permeable hydraulic pressure. Based on the analysis of the inadequacies of the existing joint shear-percolation test system, a new development of joint shear-seepage coupling test system is proposed based on the high stress and high hydraulic pressure encountered in deep underground engineering. direction.