广西宁明膨胀土胀缩活动带特征及滑坡破坏模式研究 Researches on characteristics of swell and shrinking active zone of expansive soil and failure mechanism of landslides.pdfVIP
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广西宁明膨胀土胀缩活动带特征及滑坡破坏模式研究 Researches on characteristics of swell and shrinking active zone of expansive soil and failure mechanism of landslides
V01.30 第30卷 第1期 岩 土 工程 学报 No.1 2008短 Chinese ofGeotechnical Jan.,2008 1月 Journal Engineering 广西宁明膨胀土胀缩活动带特征及滑坡破坏模式研究 刘龙武,郑健龙,缪伟 (长沙理工大学公路工程学院,潮南长沙410076) 摘要:通过对南(宁)友(谊关)高速公路宁明下第三系湖相风化泥岩及其残积土路堑边坡的系统地质调查、现场 监测,对比研究了膨胀土自然边坡和路堑边坡胀缩活动带的含水率、地温、收缩系数及50kPa下膨胀量随深度的变化 特征,结合对边坡胀缩裂隙与滑坡体形态要素的相关性分析,提出了胀缩活动带滑坡的半定量破坏模式,为有效进行 工程处治提供了依据。 关键词:膨胀土;路堑;胀缩活动带:破坏模式 中图分类号:TU443 文献标识码:A 文章编号:1000—4548(2008)01—0028—06 on and activezoneof Researchescharacteristicsofswellshrinking expansive of soilandfailuremechanismlandslides LIU Wei Long—wu,ZHENG Jian—long,MIAO and of ofScience 410076,China) (SchoolHighwayEngineering。ChangshaUniversity Technology,Changsha and andfield of limnicweatheredmudstoneresidual geological monitoring tertiaryi Abstract:Throughinvestigation Ningming soilcut of thecharacteristicsofwater Nanning—Youviguan,Express content,temperature,shrinking slopes variationunder50kPa ofnatural andcut inswelland activezoneof soil with expansive quantity depth slopes slopes shrinking werestudied.Inconnectionwiththecorrelationbetweenswelland fissureof andbehaviorof analysis shrinking
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