渗透压作用下茅口灰岩强度特性  

Research on mechanical test of Maokou limestone under osmotic pressure

作　　者：王亚[1,2] 万文[1,2] 赵延林[1,2] 罗世林[1,2] 唐劲舟 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《矿业工程研究》2015年第4期63-67,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51174088);湖南科技大学研究生创新基金资助项目(S140002)

摘　　要：矿山岩体受力复杂,且常处于渗流场中.本文以渗透压作用下茅口灰岩强度试验为基础,研究了不同围压渗透压作用下茅口灰岩的强度特性,分析了渗透压对岩石峰值强度、起裂强度和损伤强度影响,通过引用孔压弱化系数,提出考虑考虑渗透水压影响的非线性强度准则,并对新准则和其他强度准则进行比较分析,验证了新准则的科学性与合理性.The stress acted on mine rock mass stress is complex,and often in the seepage field.Based on the strength test of Maokou limestone,strength characteristics of them which are under different osmotic pressure are studied,and the impact of osmotic pressure on peak strength,splitting strength,and damage strength is analyzed.The rock strength criterion which considered osmotic pressure is proposed,and the comparation of new strength criterion with others is conducted,which ha verified the scientificity and rationality of the new guidelines.

关 键 词：强度准则 茅口灰岩 孔压弱化系数 渗透水压 

分 类 号：TD313.3[矿业工程—矿井建设]