摘要
高陡边坡的岩体受露天开挖影响,动态力学特性和稳定状态随开挖不断变化,将对周围紧邻边坡建筑物构成一定威胁。本文以深圳市塘朗山某高边坡为研究对象,通过数值模拟获取各工况下安全稳定系数并记录天然工况每一级开挖-支护时的稳定系数,动态稳定性分析结果显示:开挖-未支护时边坡稳定系数介于0.95~1.03之间,开挖-支护后各工况下的稳定系数介于1.49~1.90之间,支护效果良好;边坡开挖时清除部分坡面上危岩体、放缓坡度、分散部分土体重力并增加平台宽度,稳定系数呈现前中期迅速增加,后期保持稳定的动态增长规律;开挖-支护措施对防止边坡塌方,保护工程结构及保障人员安全具有关键作用;研究结果对类似高陡边坡的分析与治理有一定借鉴作用。
The rock mass of steep slopes is influenced by open excavation,and its dynamic mechanical properties and stability state continuously change during the excavation process,posing a potential threat to adjacent buildings.This study focuses on a high slope in Tanglang Mountain,Shenzhen.Through numerical simulation,stability factors under different working conditions are obtained,and the stability coefficients during each stage under the natural working condition are recorded.The results of dynamic stability analysis show that the stability coefficient of the slope ranges between 0.95 and 1.03 when excavation is carried out without reinforcement,while after excavation and reinforcement,the stability coefficients under different working conditions range between 1.49 and 1.90,indicating good reinforcement effects.During slope excavation,by removing the dangerous rock mass on the slope,slowing down the slope,disperse part of the rock and soil mass and increase the width of the platform,causing stability coefficient showing a rapid increase during the early to mid stages and maintaining a stable increase in the later stage.Excavation and reinforcement measures play a crucial role in preventing slope collapse,protecting engineering structures,and ensuring personnel safety.The research findings provide references for the analysis and treatment of similar steep slopes.
作者
耿雪峰
吴志斌
曾江波
冯圣坚
GENG Xuefeng;WU Zhibin;ZENG Jiangbo;FENG Shengjian(Shenzhen Survey and Mapping Institute(Group)Co.,Ltd.,Shenzhen 518000,China;Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China)
出处
《城市勘测》
2025年第4期229-236,共8页
Urban Geotechnical Investigation & Surveying
关键词
高陡岩质边坡
紧邻建筑物
动态稳定性分析
high and steep rock slope
adjacent to buildings
dynamic stability analysis
作者简介
第一作者:耿雪峰(1975-),男,硕士,高级工程师,主要从事边坡灾害防治相关设计与研究工作。E-mail:43638755@qq.com;通信作者:冯圣坚(2002-),男,硕士研究生,主要从事边坡灾害防治与设计方面研究。E-mail:fengshengjian@cug.edu。
