甘肃肃南喇嘛湾滑坡特征及其治理

Characteristics and Treatment Measures of Lamawan Landslide in Sunan City,Gansu Province

以野外实际调查及勘探资料为依据,在全面阐述滑坡分布、结构、类型、规模及变形历史的基础上,深入分析了地形地貌、地质构造及地震、地层岩性、降水、水文地质条件、人类经济活动对滑坡的影响和控制。根据坡体典型地质剖面,采用传递系数法对滑坡稳定性进行计算分析表明,现状条件下滑坡处于欠稳定-不稳定状态,降雨、地震条件下均处于不稳定状态。提出了滑坡的工程治理思路和方案,以期对类似地区的滑坡治理有所帮助。

Based on the field survey data and exploration results, this paper comprehensively elaborated the landslide distribution, structure, type, size and the history of deformation. In addition, factors that may lead to or influence the control of landslide were also thoroughly analyzed, which include the topography, geological structure and earthquake, stratum lithology, precipitation, hydrological geological conditions and human economic activities. According to the slope of typical geological section, transfer coefficient method was applied to calculate and analyze the landslide stability. The result shows that landslide is in a less stable or unstable state under the current situation, while rainfall and earthquake conditions will make the landslide unstable. Finally, landslide project management ideas and solutions were proposed, with a view to be used for the landslide government in similar regions.