Study on numerical simulation of hydrofracturing process in rock containing circle hole
Hydraulic fracturing is a typical failure process of coupling seepage flow and stress.Numerical simulation of the hydraulic fracturing process is studied by using Coupling System RFPA2D of Flow and Solid in Rock Failure Process.The research results show that pore water pressure under the rock burst is divided into three stages: crack initiation stage, micro crack extension stage and the stage of crack instability propagation, the crack initiation and propagation can be judged by rock failure process changes in the flow and stress, when crack grow into the instability of extension stage, acoustic emission occurs a large kick, the kick pressure is called the critical buckling pressure of rock failure process, monitoring critical pressure with acoustic emission have certain guiding significance for engineering practices.
shydraulic fracturing coupling of seepage and stress crack propagation rock burst numerical simulation
GAO Zhao-ning WANG Hui LI Ming
School of Mining and Safety.Anhui university of science and technology , Huainan 232001,China;Key Laboratory of Safety and High-efficiency Coal Mining ,Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
69-74
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）