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崩塌是斜坡上的岩土体在重力作用下完全脱离母体,以滚动、跳跃、坠落等方式运动的过程。本溪市南芬区东部地区内各种岩体均有崩塌现象发生,尤其是中粗粒块状坚硬花岗岩组、块状较坚硬混合岩组及厚层、中厚层稀裂状坚硬石英砂岩、石英岩岩组,因其抗风化能力强,构造裂隙卸荷裂隙发育易形成高角度斜坡,在触发因素作用下易于发生崩塌。选取区域内鸡冠砬子山崩塌,该崩塌具有典型特征,进行危险性评价研究。
Collapse is the process of the rock and soil body on the slope being completely separated from the mother body under the action of gravity and rolling, jumping, falling and the like. In the eastern part of Nanfen area of Benxi City, all kinds of rock mass collapse happened, especially the medium-coarse-grained hard granite group, the block-like hard mixed rock group and the thick layer, the medium-thick dilute cracked hard quartz sandstone, Quartzite and rock group, because of its strong anti-weathering ability, tectonic fissure unloading fissure development is easy to form high-angle slope, triggered by the trigger factor prone to collapse. In the area of Jiguanzi hill collapse, the collapse has the typical characteristics and carries on the risk assessment research.