STUDY OF THE HYDRO-FRACTURING PROCESSES IN HETEROGENEOUS ROCKS USING AN ELASTO-PLASTIC CELLULAR AUTOMATON

摘要：

An hydro-mechanical (HM) coupling model was incorporated into the elasto-plastic cellular automaton (EPCA) so that the EPCA model has the ability to simulate the failure processes of heterogeneous rocks in HM environment.Using this model,hydraulic fracturing processes of heterogeneous rocks were studied numerically.By analyzing failure patterns,hydraulic head and fluid flow vector variations as well as the crack initiation pressure,the mechanism of hydraulic fracturing in heterogeneous rocks was declared.It is concluded that the heterogeneity and confining pressure have great influence on the hydraulic fracturing process of rocks.

关键词： hydraulic fracturing heterogeneity elasto-plastic cellular automaton

作者: P.Z.Pan X.T.Feng H.Zhou

作者单位: State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei,430071,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1152-1156

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）