深圳大学学报（理工版）2013，Vol.30Issue(2)：190-194,5.DOI:10.3724/SP.J.1249.2013.02190
两条雁行预制裂隙贯通机制的细观数值模拟
Micro-numerical simulation on mechanism of fracture coalescence between two pre-existing flaws arranged in echelon
摘要
Abstract
A numerical simulation of the experiment on rock with two pre-existing flaws of different rock bridge was proposed by using particle flow code. It is shown that wing fractures and secondary fractures appear under loading and fracture coalescence takes place with tension and shear mode when the rock bridge angle is 80°or 90° But with the increase of load the wing fractures propagate to other fractures when the rock bridge angle is 120°and fracture coalescence takes place with tension mode. Furthermore, the simulation verifies that cracks will have their inter-shielding effect when they are in a certain angle, resulting in the increase of the strength of the sample.关键词
岩土工程/颗粒流方法/裂隙岩体/雁行排列/裂纹/数值模拟Key words
geotechnical engineering/ particle flow code method/ fractured rock/ echelon arrangement/ cracks/ numerical simulation分类
建筑与水利引用本文复制引用
李凡,李雪峰..两条雁行预制裂隙贯通机制的细观数值模拟[J].深圳大学学报（理工版）,2013,30(2):190-194,5.基金项目
国家自然科学基金资助项目(40772172) （40772172）
