爆破作用下岩体层间充填土运动的高速摄影试验

High-speed Photography Test on the Motion of Interlayer Fill Soil of Rock Mass under the Action of Blasting

在爆破作用下岩体层间充填土运动的高速摄影观测试验中,巧妙利用有机玻璃的变形反光表征了充填土的运动,并利用有机玻璃和钢板的共同约束解决了层间充填土侧冲问题,提出了适合该类型试验高速摄影的拍摄频率、拍摄距离和拍摄面的约束方法。通过拍摄实例,直观地再现了岩体层间充填土运动过程,为研究爆破作用下岩体内层间充填土运动规律以及根据爆破条件和岩体条件确定层裂区的发展速度及层裂范围提供了有效的试验方法。

During the experiment of high-speed photographic for the motion of interlayer fill soil of rock mass, the movement of interlayer fill soil was identified by the deformation glisten of PMMA, the problem of interlayer fill soil drawing was solved by the restriction of PMMA and steel plate. The frequency, distance of shooting and the restriction of shooting side were given for this kind of test. Through examples, the motion of interlayer fill soil process has been expressed, an effective test method was provided for the motion law of interlayer fill soil and how to determine lamination speed and range under the certainty condition of blasting and rock mass.