摘要
为更好地控制巷道围岩变形,保持其稳定性,基于声波法测试围岩松动圈的方法,经过巷帮围岩钻孔、注水、放置仪器、发射超声波、接收超声波等工序,得到声波波速在钻孔围岩内的变化情况,并对输出结果进行分析计算,进而可判断巷道围岩内松动圈的范围。测试结果对巷道围岩稳定性进行分类,为锚杆长度等支护参数设计提供了合理科学的依据。
In order to control the deformation of surrounding rock and maintain its stability,acoustic wave method was used to test the surrounding rock loose circle.After a series of processes,including roadway drilling,water injection,instrument placement,and ultrasonic transmission and reception,the variation of acoustic wave velocity in the surrounding rock of the borehole is obtained.Analyzing and calculating output results could determine the range of the loose circle in the roadway.The test results can be used to classify the surrounding rock stability and to provide a reasonable and scientific basis for the design of support parameters such as bolt length.
作者
张武
赵勇
郝兵元
ZHANG Wu;ZHAO Yong;HAO Bingyuan(Shanxi Shenzhou Mining Co.,Ltd.,Lvliang 033000,China;College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《山西煤炭》
2019年第4期29-32,共4页
Shanxi Coal
基金
国家自然科学基金(U1810104)
关键词
回采巷道
松动圈
超声波
围岩控制
mining roadway
loose circle
ultrasonic
control technology of surrounding rock
