复杂条件下高陡边坡变形与破坏规律研究

摘要

The deformation and failure law of the high steep slope at open pit due to the fault was investigated by the simulation tests of similar material with Panzhihua Iron Mine as an example. In the tests, the stress sensors and close-range photogrammetry measurement were adopted to monitor the failure and stress-strain features. A systematic analysis was made on displacement and crack failure of surrounding rock to discover the basic deformation and failure law of the high steep slope. The intensity of fault is weakened by rainfall and burst, and the deformation and failure mainly occurred in upper and middle levels of the wedge formed by the faults. The modeling of similar materials which well discover the basic characteristics of rock mass deformation and failure of high-steep slopes due to the rainfall and burst is an effective solution for theoretical research.%以攀枝花兰尖铁矿工程为例,采用相似材料模拟实验对受断层影响的露天高陡边坡的变形和破坏规律进行了研究.在模型相似模拟实验中,采用压力传感器和近景摄影测量等手段监测模型的应力应变和破坏特征,对围岩位移和破坏裂纹进行系统分析,揭示了受断层影响的高陡边坡的变形和破坏基本规律.断层强度受降雨和振动的影响而不断弱化,变形破坏主要集中在由断层所构成楔形体的中上部.相似模型实验可以较好地揭示高陡边坡受降雨和振动而产生的变形和破坏特征,是一种很有效的理论研究方法.