文章基本信息

标题：NUMERICAL SIMULATION OF HYDRO-FORCE COUPLED CRACK PROPAGATION
本地全文：下载
作者：Liaoyuan Zhang ; Zhanqing Qu ; Yong Chen 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2019
卷号：28
期号：6
页码：4923-4934
语种：English
出版社：PSP Publishing
摘要：Firstly, the working principle and mechanism of directional hydraulic fracturing are introduced, then the finite element analysis of hydraulic fracturing is carried out by using the finite element software RFPA-FLOW. The crack propagation and the acoustic emission were obtained. Results show that, (1) Hydraulic fractures develop along the direction of maximum principal stress. (2) The heterogeneity coefficient and prefabricated crack inclination are positively correlated with the crack propagation angle. (3) The energy of acoustic emission accumulates more in the later stage of propagation when the heterogeneity coefficient is less than 10, while it is opposite when the heterogeneity coefficient is more than 10.
关键词：Directional fracturing;hydro-mechanical coupling;crack propagation;numerical simulation;RFPA