黄陵县印台山边坡稳定性分析

《黄陵县印台山边坡稳定性分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、黄陵县印台山边坡稳定性分析　　摘要：针对黄陵印台山老滑坡不稳定现状，通过野外调查采样及一系列室内试验方式获取土样基本物理性质及抗剪强度指标，在分析非饱和土渗流过程及作用机理基础上，探讨了印台山裂缝对黄土边坡稳定性影响，同时借助geostudio2007软件模拟了上述过程。研究结果表明：降雨强度及降雨持时与边坡稳定性存在明显相关性，降雨强度越大，边坡稳定性越低；降雨持时越长，边坡稳定性也越低。印台山边坡裂缝的存在是影响边坡稳定的积极因素，裂缝产生的优先流一方面通过对土体内部孔隙水压力的改变来影响边坡应力平衡，另一方面通过与岩土层分界面的相互作用，促成岩土层分界面发展为优势滑动面，进而影响边

2、坡整体稳定性。在滑坡防治方面，建议在坡体前缘段设置抗滑桩，以增大坡体抗滑阻力，并对边坡裂缝进行有机物填充处理，避免优先流的产生。　　关键词：裂缝；优先流；降雨；边坡稳定性；黄土滑坡　　中图分类号：TU43文献标志码：A文章编号：16721683（2015）05094607　　StabilityanalysisofYintaishanslopeinHuanglingCounty　　PANWangsheng1，2，3，LUYudong1　　（1.SchoolofEnvironmentScience&Engineering，Chang′anUniversity，Xi′an710054，Chin

3、a；2.KeyLaboratoryof　　SubsurfaceHydrologyandEcologicalEffectinAridRegionof19MinistryofEducation，Chang′anUniversity，　　Xi′an710054，China；3.SchoolofManagement，Xi′anSiyuanUniversity，Xi′an710038，China）　　Abstract：AccordingtotheunstablestatusofoldlandslideinYintaishanofHuanglingCounty，thephysicalproperti

4、esandshearingstrengthofsoilsamplescollectedinthefieldweredeterminedthroughlaboratorytests.Basedontheanalysisofseepageprocessandactionmechanismofunsaturatedsoil，theimpactsofgroundfractureonthestabilityofYintaishanslopewerediscussed，andtheprocesswassimulatedusingthegeostudio2007software.Theresultss

5、howedthatthereisanobviouscorrelationbetweenprecipitationintensityanddurationandslopestability，andslopestabilitydecreaseswiththeincreasingofprecipitationintensityandduration.Theexistenceofgroundfracturecanaffectslopestability.Ononehand，thepreferentialflowgeneratedbygroundfracturecanaffectthestress

6、equilibriumofsoilslopethroughthevariationofporewaterpressure；ontheotherhand，theinteractionbetweenthepreferentialflowandinterfaceofsoillayercanchangetheinterfaceofsoillayerintothepriorityslipsurfaceandthenaffectslopestability.Finally，basedonitsadverseimpactoffracture，somesuggestionsofpreventionand

7、treatmentwereputforward，suchthattheantislidepileshouldbe19consideredatthebeginningofslopetoincreasetheantiskidresistanceandthefractureisfilledwiththeorganicmattertoavoidthepreferentialflow.　　Keywords：fracture；preferent