衢州某边坡滑坡综合整治和措施优化分析

Analysis of the Comprehensive Treatment and Optimization for a Slope Landslide in Quzhou

对衢州某处山体滑坡进行成因机理分析,介绍传递系数法并将其应用至项目进行稳定性评价,计算分析得到最不利处滑坡稳定系数为0.943,属于不稳定状态。采取综合整治措施对滑坡灾害进行治理,包括底部已被破坏挡墙的修复、边坡顶部削方卸荷、坡面清坡、边坡中部设置新的支挡结构、截排水措施以及边坡监测等。介绍静态爆破和动态设计施工等新措施并将其付诸施工,通过工后连续数次暴雨天气,特别是6·6特大暴雨,检验滑坡整治的效果。

Base on the analysis on the formation mechanism of a slope landslide in Quzhou,the slope stability evaluation is applied to the project by means of the transfer coefficient method.The calculation results show that the stability coefficient of the landslide in the most unfavorable condiction is 0.943,which belongs to the value in unstable state.Comprehensive treatment measures are taken to control the landslide disaster,such as the repair of the damaged retaining wall at the bottom,cutting and unloading at the top of the slope,slope cleaning,setting new retaining structure in the middle of the slope,the interception and drainage measures and slope monitoring.Some new measures such as static blasting and dynamic design and construction are introduced and are applied to the practice.The effect of landslide treatment has been tested by several rainstorms after the construction,especially the 6·6 heavy rain.