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白灰厂边坡位于包头石拐矿区,滑体近500万方。自1979年底复活以来;滑坡体前缘向前滑动了30米左右,复盖公路、毁坏民房并威胁长汉沟煤矿的安全。为研究该滑坡的滑动破坏机制及进行稳定性评价,在现场地质调查及岩体结构分析的基础上,对滑面粘土岩进行了物理力学特性试验及物质成份分析,提出了白灰厂滑坡的典型地质模型。该滑坡具有座落式平推滑移的特点。滑面粘土岩含大最蒙脱石,强度低、水理性质差,控制着滑坡体的滑动破坏。这种滑坡具有明显的蠕变特性。由于滑面粘土岩倾角平缓,一般不会产生大规模的急速滑动。分析了边坡滑动的原因,提出了改变边坡稳定条件的某些建议,收到明显的效果。
The limefield slope is located in Baotou Shijiao Mine, with a sliding body of nearly 5 million square feet. Since the resurrection at the end of 1979, the leading edge of the landslide body has slipped about 30 meters forward, covering roads, destroying houses and threatening the safety of the Changhangou coal mine. In order to study the sliding failure mechanism of this landslide and evaluate its stability, based on the on-site geological survey and structural analysis of the rock mass, the physical and mechanical properties of the sliding surface clay rock were tested and the composition of the material was analyzed. The typical landslide of the lime ash plant was proposed. Geological model. The landslide has the characteristics of seated flat pushing and sliding. The slippery clay rock contains the largest montmorillonite, with low strength and poor water chemistry, which controls the sliding failure of the landslide body. This kind of landslide has obvious creep characteristics. Due to the smooth slope of the sliding surface clay rock, generally no large-scale rapid sliding occurs. The reasons for the slope slippage were analyzed, some suggestions for changing the slope stability conditions were put forward, and obvious results were received.