摘要
由于软煤难于加工成标准的原煤试样,软煤的力学参数的获取非常困难。通过将散体力学引入煤矿领域,将散体力学试验和Mohr-Coulomb强度准则结合求得软煤的黏聚力c和内摩擦角φ。并通过Mohr-Coulomb强度准则求得软煤的单轴抗压强度,在此基础上结合广义的Hoek-Brown强度准则及地质强度指标GSI估算软煤的其他力学参数。
The soft coal is difficult to process into standard coal sample,so the acquisition of soft coal mechanical parameter is very difficult.By introducing granular material mechanics to the coal field,soft coal cohesion C and internal friction angle φ are obtained by combining the granular material mechanics test with Hoek-Brown strength criterion.Uniaxial compressive strength of soft coal is got according to Mohr-Coulomb strength criterion.On this basis,other mechanical parameters of soft coal can be estimated by combining the generalized Mohr-Coulomb strength criterion with geological strength index GSI.
出处
《煤矿安全》
CAS
北大核心
2013年第4期13-15,共3页
Safety in Coal Mines
基金
河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金资助项目(WS2012A09)
河南理工大学博士基金资助项目(B2008-15
B2012-093)
河南理工大学青年骨干教师资助项目
