论文部分内容阅读
为了研究三峡引水工程秦巴段的地表地质灾害特征及其工程影响,本文在简要分析秦巴山地区域工程地质条件和线路工程地质条件的基础上,重点分析秦巴山区典型地质灾害分布特征及其对引水工程的影响,初步揭示:(1)秦巴山区浅表层地质灾害具有类型多、成群带分布、规模大小差异明显;(2)秦巴山区地质灾害形成发展的主要影响因素是构造地貌、高陡边坡、斜坡结构和易滑地层组合,主要诱发因素为局部集中强降雨和线性工程(主要是公路)切坡及河流冲蚀作用;(3)地表地质灾害主要影响引水设施施工安全、施工便道、主要场地(水库和渡槽)等的安全,需要引起重视。
In order to study the characteristics of surface geological disasters and their engineering impacts in Qinba section of the Three Gorges Diversion Project, based on a brief analysis of the engineering geological conditions and the engineering geological conditions of the Qinba Mountains, this paper focuses on the distribution characteristics of typical geological disasters in the Qinling-Bashan Mountains (1) The shallow surface geological disasters in the Qinling-Bashan Mountains have many types and clusters, with significant differences in size. (2) The main influencing factors for the formation and development of geological disasters in the Qinling-Bashan Mountains are the tectonic landforms , High-steep slope, slope structure and slippery stratum. The main inducing factors are concentrated rainfall and linear cutting (mainly road) cutting and river erosion; (3) Surface geological disasters mainly affect construction safety of water diversion facilities , Construction access roads, the main venue (reservoirs and aqueducts), etc., need attention.