SIMULATION OF ROCK FRACTURING PROCESS UNDER COUPLED HYDRO-MECHANICAL EFFECT USING A SOLID CELLULAR AUTOMATON
Based on Biots theory, elasto-plastic theory and self-organization theory of cellular automata (CA), the CA model coupled with elasto-plastic stress and seepage is established and the associated code is developed to simulate the fracturing process of heterogeneous rocks under coupled hydro-mechanical (HM) processes. Considering the heterogeneity of materials, the model has the ability to simulate the process of crack initiation, propagation and coalescence under the interaction of mechanical loading and water pressure. Aiming at brittle and plastic intact rock materials, the studies include the main three items such as (1) effect of stress level on hydraulic permeability, (2) influence of hydraulic conduction on failure process of rocks, and (3) effect of heterogeneity on hydro-mechanical coupling mechanism. The simulations reproducing some typical experiment results conducted by previous researchers, indicate that the CA model is a valuable numerical tool for study rock failure processes in an HM coupling environment.
Pengzhi Pan Xiating Feng Hui Zhou
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences,Wuhan 430071, P.R.China
国际会议
南京
英文
127-132
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）