单轴压缩下原煤试件微震信号特征  

Study on microseismic signal of raw coal under uniaxial compression

作　　者：焦波波 潘一山[1] 谭晓引 唐治[1] 

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2015年第11期1217-1221,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点基础研究发展规划(973)基金项目(2010CB226803);国家自然科学基金项目(11172121)

摘　　要：为降低和减少矿震所导致的事故和灾害,利用100KN液压万能试验压力机对原煤进行单调加载、分级加载、循环加载三种加载方式的单轴压缩试验.结果表明:不同加载方式下原煤震动信号的变化特征各不相同;原煤在加载过程中有少量微震信号,当加载到原煤破坏时微震信号最为明显,可以根据微震信号的强弱来判断煤岩的受力状况;三种加载方式下,煤样在破坏失稳前震动信号均存在一段沉寂区.In order to reduce the accidents and disasters caused by mine earthquake, row coal was tested by 100KN Hydraulic universal testing machine under monotonic loading, step loading and cyclic loading. The results showed that the variation characteristics of seismic signals of coal under three different loading were quite different; The coal presented very weak micro-seismic during loading, and presented obvious micro-seismic when it was loaded to damage, which can be used to judge the force of coal; Under three kinds of loading mode, there was a quiet area of seismic signals before instability and failure of coal.

关 键 词：原煤 单轴压缩 分级加载 循环加载 微震 

分 类 号：TD326[矿业工程—矿井建设]