摘要
通过对抚顺龙凤矿三号井—625车场巷道底板的深孔超声波探测,推断了该段巷道底板的应力松驰圈范围,并据现场钻孔情况和声波波速进行了底板岩层的岩性分析,为制定巷道底鼓防治措施提供了依据.同时提出现场软岩巷道底板超声波探测中应注意几个问题.
This paper applies the ultrasound detection to deep hole in the tunnel floor at No.-625 vehicle stop No.3 pit of LongFeng Mine, Fushun.Mining Bureau,and decuced the relaxationring range of the area.The properties of the rock strata are analyzed according to the actual condition of drilling hole and the acoustic wave. Therefore, the important basis of the preventoin and treatment of the tunnel floor expansion is provided. Meanwhile, several problems about ultrasonic detection of the tunnel floor with soft rock are given, which must be paid attention to.
关键词
巷道
软岩
底板
应力
超声波探测
soft rock
lift
floor
relaxationring
ultrasound detection
