水岩耦合变形破坏过程及机理研究进展

ADVANCES IN ROCK DEFORMATION AND FAILURE PROCESS UNDER WATER-ROCK COUPLING

坝址水力劈裂、煤矿和隧道突水以及水力压裂工程都是岩体损伤演化积累诱发破坏(灾变)的过程,然而能否正确认识和评价这些过程取决于人们对水岩耦合变形破坏过程和机理的研究程度.阐述了岩石渗流--变形--破坏特性及机理研究的进程,侧重于物理实验成果.综述了水岩耦合变形破坏过程分析模型和数值计算,特别是有限单元法处理裂纹的思路,并介绍了作者课题组近年来所取得的一些代表性成果.给出了当前理论(数值)研究中所面临的几个具体问题和挑战,并对今后研究工作进行了力所能及的展望.

Seepage flow in dam sites, water inrush in coal mines and tunnels, and hydraulic fracturing engi- neering are usually induced by the accumulation of rock damage evolution （catastrophic） process. Whether our understanding and evaluation of these processes are correct or not depends on tile in-depth study on rock defor- mation and failure process under water-rock coupling condition. The advances ill rock seepage - deformation - failure characteristics and relevant mechanism of the process, particularly the physical experimental results, are reviewed here. And the analysis models and corresponding numerical calculations for rock deformation, failure process raider water-rock coupling are reviewed, especially the finite element method in view of the treatment of cracks. A number of representative research results achieved by the authors in recent years are briefly presented. Several specific challenges in the current theoretical （numerical） research and the prospects of future researches are then elucidated and suggested.