贵州某拟建机场高填方边坡破坏模式及稳定性分析  

FAILURE MODE AND STABILITY ANALYSIS OF HIGH FILL SLOPE OF A PROPOSED AIRDROME IN GUIZHOU PROVINCE

作　　者：胡勇生 燕俊松 唐宁 HU Yong-sheng;YAN Jun-song;TANG Ning(Sichuan Province Geological Engineering Complex,Chengdu 610015,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]四川省地质工程集团公司,成都610015 [2]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

出　　处：《地质灾害与环境保护》2018年第3期38-42,共5页Journal of Geological Hazards and Environment Preservation

摘　　要：高填方边坡稳定性很大程度上受地基结构控制,复杂而不利的地基结构往往会对填方边坡的整体稳定造成严重影响。本文针对贵州某拟建机场高填方边坡稳定性问题,分析了复杂地基条件下高填方边坡的失稳破坏模式,并采用Morgenstern-Price法对边坡的稳定性进行了计算。结果表明,区内高填方边坡在暴雨和地震工况下不满足稳定性要求,原始坡面、老滑坡滑带、浅层潜在滑带往往构成危险滑面,部分情况下深部软弱夹层也可构成滑面。据此,从填方体施工、地基处理、排水、工程加固等方面提出了相应的防治建议。The stability of high fill slope is largely controlled by the foundation structure.Complex and unfavorable foundation structure often has serious influence on the overall stability of the fill slope.In this paper,high fill slopes of a proposed airport in Guizhou with complex foundation structure are studied.Their possible failure modes,also controlled by the foundation structure,are analysed and the thelr stability is calculted by using the Morgenstern-Price method.Results show that the high fill slopes in this area do not meet the stability requirements under the rainstorm and earthquake conditions and the original slope surface,the bedrock-cover discontinuity and the potentral slidny often constitute the most dangerous slip sufaces,which must be highly valued in engineering management.In some cases,the soft interlayer in deep may also form the slip surface,which should not be neglected.Accordingly,the corresponding prevention and cure suggestions are put forward from four aspects of fill construction,foundation treatment,drainage and engineering reinforcement.

关 键 词：高填方边坡 破坏模式 稳定性分析 

分 类 号：P642[天文地球—工程地质学] TU457[天文地球—地质矿产勘探]