层状岩质边坡开挖过程相似模型试验

Similarity model experiment of excavation in bedding rock slope

层状岩质边坡是自然界中分布较广的一类边坡。本文以云南某矿山采场边坡为例,应用二维物理模型对层状岩质边坡进行了模拟研究。在遵循相似理论的前提下,确定了本次模型试验的参数和相似材料的配比。本次模型试验分三步进行,首先,根据现场岩体的分布情况对模型进行堆砌建造,其次,对模型进行开挖,最后,对模型上观测点的变形进行监测。最终总结出层状岩质边坡的变形规律和内部围岩的变形趋势以及潜在的滑移破坏模式。

The bedding rock slopes distribute widely in nature. A two-dimensional physical model simulation studies are conducted on a mine slope in Yunnan. The parameters of the model experiment and the mixing ratio of material are determined according to the similar theory. The model test is divided into three steps. Firstly, the model is constructed based on the distribution of rock mass in the field, and then the model slope is excavated, and the deformation of the observation point is finally observed. The deformation of the bedding rock slope, the internal surrounding rock deformation trend and the potential sliding failure mode are concluded at last.