电力铁塔及软弱夹层下顺层岩质边坡稳定性评价  

Stability Evaluation of Bedding Rock Slope Under Weak Interlayer of Electric Power Tower

作　　者：毛吉成 刘永 甘小迎 杨建华 邓杰文 MAO Jicheng;LIU Yong;GAN Xiaoying;YANG Jianhua;DENG Jiewen(China electric power construction group Guizhou Electric Power Design and Research Institute Co.,Ltd.,Guiyang 550002,China)

机构地区：[1]中国电建集团贵州电力设计研究院有限公司,贵州贵阳550002

出　　处：《电力勘测设计》2025年第1期55-61,共7页Electric Power Survey & Design

基　　金：中国电建集团贵州电力设计研究院有限公司科技项目,贵州电网地质灾害易发性模型及监测预警技术研究(GZEDKJ-2023-08)。

摘　　要：以贵阳市某输电线路工程为例,通过铁塔施工前后对含软弱夹层的顺层岩质边坡采用GTS NX软件建模分析,得到在含软弱夹层的顺层岩质边坡中,软弱夹层对边坡的变形失稳起着决定性作用。同时该边坡在铁塔施加后由于铁塔上部荷载较重,荷载通过基础传递到坡体内部,导致边坡变形位移量有所增大,塑性变形区分布位置下移,边坡稳定性系数有所降低,但锚索受力情况整体变化不大。整体来说铁塔的施加对边坡影响较小。Taking a power transmission line project in Guiyang as an example,uses GTS NX software to model and analyze the bedding rock slope with weak intercalation before and after the Iron Tower is applied,the weak interlayer plays a decisive role in the deformation and instability of the slope.At the same time,due to the heavy load on the upper part of the tower,the load is transmitted to the inside of the slope through the foundation,which results in the increase of the displacement of the slope and the downward displacement of the plastic deformation area,the stability coefficient of the slope is decreased,but the stress of the cable is little changed.As a whole,the influence of iron tower on slope is small.

关 键 词：铁塔 软弱夹层 顺层 锚杆 稳定性 数值模拟 

分 类 号：TK01[动力工程及工程热物理]