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某深挖路堑顺层滑坡成因分析及治理措施

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某公路深挖路堑顺层边坡开挖至设计标高后发生滑坡,通过现场调查、勘察、室内试验及检测、监测等手段,分析滑坡成因并提出加固治理措施。结果表明:边坡岩体节理裂隙发育、地震损伤、降雨入渗及地下水影响、锚索锚固长度不足等,是引起滑坡的主要因素;滑坡在天然工况、地震工况处于基本稳定状态,在暴雨工况下处于欠稳定状态;根据极限平衡法计算滑坡推力,采用锚索抗滑桩+垫墩锚索+排水的综合治理措施,经治理后滑坡处于稳定状态。
Cause Analysis and Treatment Measures of Deep Cutting Bedding Landslide
Landslide occurs after the deep cutting bedding slope in a highway is excavated to the design elevation.The causes of landslide are analyzed and the measures of strengthening and controlling are put forward by means of field investigation,survey,laboratory test,detection and monitoring,etc.The results show that the main factors of landslide are the development of rock joint and fracture,earthquake damage,rainfall infiltration and groundwater influence,and insufficient anchoring length of anchor cable.The landslide is basically stable under natural condition and earthquake condition,and understable under rainstorm condition.The landslide thrust is calculated according to the limit equilibrium method,and the comprehensive treatment measures of anchor cable anti-slide pile+cushion pier anchor cable+drainage are adopted.The landslide is in a stable state after treatment.

bedding slopelandslidecause analysisanchor cable anti-slide pilecushion pier anchor cable

蒋发森、王思铎、高美奔、熊冰、杨星

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四川公路工程咨询监理有限公司,成都 610041

成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都 610059

顺层边坡 滑坡 成因分析 锚索抗滑桩 垫墩锚索

2024

路基工程
中铁二局集团有限公司,西南交通大学,中铁二院工程集团有限责任公司

路基工程

影响因子:0.36
ISSN:1003-8825
年,卷(期):2024.(6)