中文摘要：

本文从现状分析和实验测试两方面探索次声波监测煤岩动力灾害的可行性,分析煤岩单轴压缩过程中次声波信号与加载应力的对应关系。研究结果表明：1）次声波技术可以实现矿井煤岩动力灾害的远距离、非接触性监测;2）煤岩在单轴加载变形破裂过程中能产生显著的次声波信号,在失稳破坏即将发生或发生时,次声波信号出现较大幅度值;3）在受载煤岩变形破裂过程中,次声波信号幅度值随着应力的增大呈增强趋势,两者具有较好的对应关系。次声波具有传播距离远、衰减小和穿透能力强等特点,对煤岩变形破裂过程中产生次声波现象的进一步研究可为预测预报矿井煤岩动力灾害的发生提供重要的研究方法和技术手段。

英文摘要：

The feasibility of infrasonic wave monitoring dynamic disasters in coal and rock is studied from the two aspects of present situation analysis and laboratory test in this paper. The relationship between infrasonic wave signals and loading stress in the whole process of coal and rock uniaxial compression are analyzed. The results show that： 1 The monitoring technology of infrasonic wave can realize long-distance and non-contact monitoring of dynamic disasters in coal and rock; 2 The infrasonic wave emission phenomena can apparently appear in the process of deformation and failure of uniaxial loading in coal and rock. The infrasonic signal show a larger amplitude when instability or failure to occur; 3 In the process of deformation and failure of uniaxial loading of coal and rock,the infrasonic signal amplitude increases with the increasing of stress, the results show that they have a good correspondent relationship. The infrasound shows advantages in low-attenuate,long distance transmission,strong penetration ability,and other unique properties. Consequently,the further study of infrasonic wave generated by coal and rocks ＇ microfracture can provide a significant innovate approach and technique for monitoring dynamic disasters in coal and rock.