摘要
以深部花岗闪长岩(564~576 m)为研究对象,采用微机伺服岩石三轴试验机和声发射监测系统,对岩样进行压缩试验和声发射监测试验,获得深部花岗岩破坏过程声发射特性。通过探究深部花岗闪长岩在单轴及三轴压缩破坏过程中应力–应变特征和声发射参数曲线,得出岩石的裂隙初始应力、裂隙贯通应力和峰值应力以及与之对应的声发射特征得到声发射参数与岩石破裂之间的关系。分析试验数据,得到声发射参数与岩石破裂之间的关系,为进一步建立工程岩体的强度准则提供依据。
Regarding deep granodiorite(564–576 m) as the background,failure process of deep granodiorite and its acoustic emission(AE) characteristics were researched with microcomputer servo-controlled triaxial testing machine and AE monitoring system by conducting rock compression test and acoustic emission monitoring tests. By discussing the failure mechanism of granodiorite in uniaxial and triaxial compression,the regularity of various stages of AE in the process of rock failure was obtained and the envelope of crack initiation stress,crack connection stress and peak stress were obtained. Based on the test data,the relationship between AE parameters and rock failure was obtained and the preconditions for establishing engineering rock mass strength criterion were created.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2014年第S1期2773-2778,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家重点基础研究发展计划(973)项目(2010CB731501)
关键词
岩石力学
深部花岗闪长岩
破坏
声发射
强度准则
rock mechanics
deep granodiorite
failure
acoustic emission(AE)
strength criterion
