【摘要】 基于超声波速度快、能量高的传播特点,在煤岩试件单轴压缩实验过程中运用超声波检测分析系统,得到超声波在煤岩试件中传播的声速和振幅随单轴压力变化的关系曲线和振幅与压力的关系方程。同时将超声波检测系统应用于煤岩巷道的围岩松动圈检测,证实了超声波振幅检验松动圈范围的判读方法,修正了声速判读法的不足,并取得了良好的应用效果。更多还原

【Abstract】 Based on the spreading characters of ultrasonic as high speed and large energy,ultrasonic measure and analysis system was used during the uniaxial compress test on coal samples.The connecting curves of ultrasonic speed and swing along with the uniaxial stress on coal samples were gained,with the equation between swing and stress.The ultrasonic measure and analysis system was also applied on the exploration of surrounding loose circle in coal laneway.The swing test method of measuring loose circle bound was approved,which revised the speed test niethod and acquired great application results.更多还原