北京北宫镇大灰厂路牵引式岩质滑坡勘查及防治对策  

Exploration and prevention measures of traction type rock landslide on Dahuichang Road in Beigong Town,Beijing

作　　者：李晓玮 LI Xiaowei(Beijing Institute of Geology,Beijing 100120,China)

机构地区：[1]北京市地质灾害防治研究所,北京100120

出　　处：《城市地质》2024年第2期139-148,共10页Urban Geology

摘　　要：大灰厂滑坡位于北京西山地区。现场采用调查、槽探、钻探、岩土测试等方法勘察确定了大灰厂路滑坡的特征,滑坡范围包括1个主滑坡和1个伴生滑坡,主滑坡平面形态呈倒“V”型,伴生滑坡平面形态呈“圈椅”状。滑坡总面积2322 m^(2),总方量约4644 m^(3),规模为小型。滑动面为沿着滑体下伏页岩层面形成的平面。总体来看,大灰厂路滑坡是沿坡体基岩面顺层滑动的小型牵引式浅层岩质滑坡。对该滑坡3种工况的稳定性分析表明:在天然工况和地震工况下,滑坡处于稳定状态;而在持续降雨工况下的滑坡则会发生失稳破坏。治理工程采用了“清理滑塌堆积体+截排水沟+锚杆格构梁+重力式挡墙”的综合治理方案。Dahuichang landslide site is located in the Xishan area of Beijing.The characteristics of the Dahuichang Road landslide were determined through on-site investigation,trenching,drilling,and geotechnical testing.The landslide range includes one main landslide and one associated landslide.The main landslide has an inverted V-shaped plane shape,and the associated sliding slope has a circular chair shaped plane shape.Its scale is small with a total area of 2,322 square meters and a total volume of approximately 4,644 cubic meters.The sliding surface is a plane formed along the underlying shale layer of the sliding body.Overall,the Dahuichang Road landslide is a small traction type shallow rock landslide that slides along the bedrock surface of the slope.The stability analysis of the landslide under three working conditions shows that the landslide is in a stable state under natural and seismic conditions.Landslides under continuous rainfall conditions may experience instability and damage.The treatment project adopted a comprehensive treatment plan of"cleaning the landslide accumulation body+Intercepting and drainage ditch+anchor rod lattice beam+gravity retaining wall".

关 键 词：公路滑坡 岩质边坡 滑坡勘查 滑坡治理 

分 类 号：U418.55[交通运输工程—道路与铁道工程]