点荷载作用下基于声发射监测的岩石加载试验数值模拟  

Numerical Simulation of Rock Load Test Based on Acoustic Emission Monitoring Under Point Load

作　　者：刘明松[1] 王世潭[1] 

机构地区：[1]龙岩学院,福建龙岩364012

出　　处：《煤矿安全》2013年第12期204-206,210,共4页Safety in Coal Mines

基　　金：龙岩学院校立服务海西面上项目(百名青年教师攀登项目)(LYXY2011094);龙岩学院服务海西建设项目(JB10163)

摘　　要：利用RFPA2D对5种尺寸的岩石试件进行点荷载加载数值模拟,从声发射及受载端应力方面分析了点荷载作用下影响岩样试验的有关问题,结果表明：岩样试件在点荷载的作用下,其端部压应力效应对高径比为1∶1~1∶2之间的岩体试验影响不大,否则,端部压应力破坏效应明显,影响试验结果。The five different sizes of rocks specimen under point load was carried on numerical simulation by RFPA2D,the paper analyzed the relevant problems affecting the rock test under point load from acoustic emission and loading end stress aspects. The results showed that the end stress effect had little affect on the rock with height to diameter ratio between 1： 1 and 1： 2 under point load,otherwise,it was evident to affect the test results because of end stress effect.

关 键 词：端部压应力效应 点荷载 岩石试件 数值模拟 

分 类 号：TD313[矿业工程—矿井建设]