摘要
为了认识具有弱冲击倾向性砂岩的声发射特性,利用MTS815岩石力学测试系统、AE测试分析系统对永川煤矿须六段砂岩进行了测试。结果表明:砂岩受载过程的不同阶段产生的AE信号有较大区别;AE事件空间分布的变化反映了岩石受损伤后的破裂失稳过程;须六段砂岩存在Kaiser效应和Felicity效应。研究结论为应用AE监测技术预测、预报矿井岩石动力灾害提供了科学依据。
In order to understand the acoustic emission characteristics of weak impact-prone sandstone, experiments of T3 xj^6 sandstone in Yongchuan coalmine were tested by means of MTS815 rock testing system and AE testing system. Results of the tests indicated that there were large differences of the acoustic emission signals produced in dif- ferent stages of sandstone loading process. The variation of spatial distribution of AE events reflected the failure process of sandstone damaged. The Kaiser and Felicity effects existed in T3 xj^6 sandstone. The research provided a scientific basis for the prediction of rock dynamic disaster by using AE monitoring technology in coalmines.
出处
《山东科技大学学报（自然科学版）》
CAS
2011年第6期1-7,共7页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(50904082)
重庆市科委自然科学基金计划项目(cstcjjA00002)
