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近年来,特高压输电线路全面建设。当线路塔位经过地质灾害频发的山区时,如何快速有效的发现并规避滑坡等不良地质现象,对电力线路工程勘测设计意义重大。本文以溪浙线±800 kV特高压直流工程施工图勘察为背景,从土体抗剪强度的两个参数(黏聚力和内摩擦角)的变化,分析和研究川南山区滑坡规律,并反算易滑边坡的抗剪强度参数,为线路塔位选定提供参考。
In recent years, UHV transmission lines have been fully constructed. How to find out and avoid the adverse geological phenomena such as landslides quickly and effectively is of great significance to the investigation and design of power line engineering when the line tower locates in the mountain area where the geological disasters are frequent. Based on the investigation of ± 800 kV UHVDC project in the Xi-Zhe line, this paper analyzes and studies the landslide law in the mountain area of southern Sichuan from the change of two parameters (cohesion and internal friction angle) of the shear strength of the soil, Calculate the shear strength parameters of the slippery slopes, provide a reference for the selection of the tower line.