摘要
运用单轴加载系统和声发射监测系统,进行了不同花岗岩单轴压缩条件下破坏过程声发射事件平静期的研究,获取了载荷-事件累计-时间关系曲线。试验结果表明:试件均发生脆性破坏,破坏形式具有一定离散性,声发射事件数随孔径的增大而变多;声发射事件累计-时间的关系曲线具有向右倾斜的S形特征。
Experiments on acoustic emission quiet period of complete porous granite failure process are carried out under axial loading system and acoustic emission monitoring system. Relations between load and cumulative events of time are obtained. The test results show that granite with different diameter hole has characteristics of brittle failure and has a certain degree of discrete, cumulative events increased with increased diameter of granite sample; the curve of time with cumulative events has the characteristics of S type inclined to the right.
出处
《煤炭技术》
CAS
北大核心
2015年第4期97-99,共3页
Coal Technology
基金
国家自然科学基金项目(51304143)
关键词
声发射
花岗岩
时差定位
平静期
acoustic emission
granite
TDOA location
quiet period
