高压水射流作用下岩石的损伤模型  

A DAMAGE MODEL FOR ROCK UNDER HIGH PRESSURE WATER JET

作　　者：倪红坚[1] 王瑞和[1] 张延庆[2] 

机构地区：[1]石油大学石油工程学院,山东东营257061 [2]北京工业大学建筑工程学院,北京100022

出　　处：《工程力学》2003年第5期59-62,共4页Engineering Mechanics

基　　金：山东省自然科学基金(Y2000F02)

摘　　要：基于高压水射流破岩过程的分析,运用连续损伤力学和细观损伤力学理论,建立了适用于水射流破岩两个阶段的岩石损伤模型以及两个阶段岩石损伤的耦合模式。依据所建立的损伤模型,利用非线性动力有限元方法,对高压水射流破岩的全过程进行了模拟,计算结果与试验规律基本一致。Based on the analysis of rock breaking under high-pressure water jet, a rock damage mode and a damage coupling model suitable for two different stages of rock breaking progress are established with continuum damage mechanics and micro damage mechanics. The evolvement of rock damage and breakage are simulated with nonlinear FEM and the rock damage model. Numerical results agree with experimental results, indicating that the rock damage model established in this paper can simulate the rock breaking process under high pressure water jet.

关 键 词：水射流 岩石破碎 损伤机理 损伤模型 

分 类 号：TE248[石油与天然气工程—油气井工程]