受载煤岩自电位、电荷感应和声发射规律及其应用研究

项目名称： 受载煤岩自电位、电荷感应和声发射规律及其应用研究

项目编号： No.51274114

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 赵扬锋

作者单位： 辽宁工程技术大学

项目金额： 80万元

中文摘要： 冲击地压是我国矿井严重的自然灾害，一种单独的预测方法无法满足预测的需要，综合预测能大大提高预测的准确性、及时性。本项目基于冲击地压孕育发生过程的前兆信号有自电位、电荷感应和声发射等信号，根据岩石力学、电学和地球物理学的基本理论，采用理论分析、数值模拟、试验研究和现场测试相结合的方法，改进电荷传感器，研制自电位传感器和声发射传感器以及数据采集器，形成煤岩变形破裂综合监测系统；对不同类型煤岩试样、组合煤岩试样和预制裂纹煤岩试样在不同受载条件下（单轴压缩、拉伸、三点弯曲、剪切）进行试验研究，探索受载煤岩产生自电位、电荷感应和声发射信号的变化规律以及信号的产生机理和影响因素；根据冲击地压发生失稳机理的不同对冲击地压进行分类研究，并选择不同冲击地压类型矿井分别进行现场监测，形成系统的综合监测（自电位、电荷感应和声发射）技术，提高冲击地压预测的准确率，最大程度地降低冲击地压造成的经济损失和人员伤亡。

中文关键词： 煤岩；声发射；电荷感应；自电位；综合监测

英文摘要： Rockburst is the one of serious natural disaster of mine in our country. A separate prediction method can not meet the need of rockburst prediction, comprehensive prediction method can greatly improve the accuracy and timeliness of rockburst prediction. Based on the self-potential,charge induction and acoustic emission signals in the precursor signals in the process of rockburst generation, according to the basic theory of rock mechanics, electrical and geophysics, the methods combining theoretical analysis, numerical simulation, experimental research and in-situ monitoring are used. The charge sensor is improved, the self-potential sensor, the acoustic emission sensor and data collector are developed, the comprehensive monitoring system of coal rock deformation and frature is set up. According to experimental research on different coal rock samples, compound coal rock samples and pre-cracked coal rock samples under different loading conditions (uniaxial compression, tension, three-point bending, shear), the regularity, generating mechanism and influence factors of the self-potential,charge induction and acoustic emission signals of coal rock under load are explored. According to the instability mechanism of rockburst occurrence, rockburst is classified to study, and the rockburst mines of the different types is

英文关键词： coal and rock；acoustic emission；charge induction；self-potential；comprehensive monitoring