地下开采的矿山,经常会遇到巷道围岩的失稳问题。由于巷道围岩的稳定性,不仅影响到工程的进度,同时也将严重影响人员和设备的安全,因此,许多年来中外学者一直致力于这方面的研究工作,力图找出一种能综合反映岩体稳定程度的测试方法。在众多方法中,利用岩体声波速度来判断岩体的稳定性,愈来愈被人们重视,并广泛用于实践。 为此,在我们做的围岩稳定性分级试点中,也选择了岩体声波声度,做为分级的判据,将它与其它指标,互相补充,能综合评价岩体的稳定性。 Underground mining mines, often encountered roadway rock instability problems. As the stability of roadway surrounding rock not only affects the progress of the project, but also will seriously affect the safety of personnel and equipment, so for many years Chinese and foreign scholars have been committed to the research work in this area, trying to find a can reflect the rock Body stability test methods. Among many methods, the use of rock mass acoustic velocity to judge the stability of rock mass is more and more attention and widely used in practice. For this reason, in our experiment of grading stability of surrounding rock, rock acoustic wave soundness has also been selected as the criterion of grading, and it is added with other indicators to comprehensively evaluate the stability of rock mass.