深部高应力巷道劈裂破坏数值模拟研究  

Numerical simulation research of splitting failure of roadway under high stress

作　　者：聂韬译[1] 浦海[1] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,力学与建筑工程学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2014年第6期963-968,共6页Journal of Mining & Safety Engineering

基　　金：国家优秀青年科学基金项目(51322401);国家重点基础研究发展计划(973)项目(2015CB251601);国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261201);中国矿业大学中央高校基本科研业务费专项资金项目(2014YC09;2014ZDPY08)

摘　　要：针对高地应力条件下出现的劈裂破坏这一特殊的工程地质现象,采用考虑闭合效应下基于曲线扩展路径的劈裂演化模型,通过FISH语言内嵌,运用FLAC软件进行巷道劈裂破坏数值模拟研究,得到了不同地质条件下劈裂破坏深度、面积的演化图;分析了埋深、侧压力系数、体积模量、剪切模量对巷道劈裂破坏的影响规律。研究成果可为高地应力下地下工程的稳定性评价及支护设计提供参考。In response to the splitting failure which is a special engineering geological phenomenon under high in-situ stresses, splitting model based on curve expanding path involving closure effect has been applied. This model is programmed by FISH functions and embedded into FLAC software. Numerical simulation of splitting failure of roadway has been conducted by using FLAC software. The diagrams of splitting failure evolution with respect to the depth and area under different geological conditions have been obtained. The impacts of depth, lateral pressure coefficient, bulk modulus and shear modulus on splitting failure have also been analyzed. The research can offer reliable references to the evaluation of stability of underground structures and the design of support under high in-situ stresses.

关 键 词：深部 高应力巷道 劈裂破坏 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]