人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
6期
82-84,88
,共4页
强鲁斌%朱瑛洁%曹道宁%李迷%马力刚
彊魯斌%硃瑛潔%曹道寧%李迷%馬力剛
강로빈%주영길%조도저%리미%마력강
膨胀土%深挖方%渠坡%破坏形式%南水北调中线工程
膨脹土%深挖方%渠坡%破壞形式%南水北調中線工程
팽창토%심알방%거파%파배형식%남수북조중선공정
expansive soil%deep excavation%channel slope%failure mode%South-to-North Water Diversion
深挖方膨胀土渠道在施工开挖过程中及渠坡基本成型后的一段时间内,时常出现渠坡变形破坏现象,影响到正常的工程施工及工程后期的安全运行。为了研究深挖方膨胀土渠道的变形破坏形式,以南水北调中线工程为例,从膨胀土性质、地质成因入手并结合开挖揭露的地质情况及渠坡变形的长期监测成果,对深挖方膨胀土渠道变形破坏形式进行了分析研究,总结出了失水干裂-吸水崩解、冲蚀雨淋沟、脱坡及土溜、滑坡等变形破坏形式,有针对性地提出了膨胀土渠道加固处理的措施建议。
深挖方膨脹土渠道在施工開挖過程中及渠坡基本成型後的一段時間內,時常齣現渠坡變形破壞現象,影響到正常的工程施工及工程後期的安全運行。為瞭研究深挖方膨脹土渠道的變形破壞形式,以南水北調中線工程為例,從膨脹土性質、地質成因入手併結閤開挖揭露的地質情況及渠坡變形的長期鑑測成果,對深挖方膨脹土渠道變形破壞形式進行瞭分析研究,總結齣瞭失水榦裂-吸水崩解、遲蝕雨淋溝、脫坡及土霤、滑坡等變形破壞形式,有針對性地提齣瞭膨脹土渠道加固處理的措施建議。
심알방팽창토거도재시공개알과정중급거파기본성형후적일단시간내,시상출현거파변형파배현상,영향도정상적공정시공급공정후기적안전운행。위료연구심알방팽창토거도적변형파배형식,이남수북조중선공정위례,종팽창토성질、지질성인입수병결합개알게로적지질정황급거파변형적장기감측성과,대심알방팽창토거도변형파배형식진행료분석연구,총결출료실수간렬-흡수붕해、충식우림구、탈파급토류、활파등변형파배형식,유침대성지제출료팽창토거도가고처리적조시건의。
Channel slope deformation failures of deep excavated canal usually occur during construction and seriously threaten the construction and operation safety of the canal. For exploring the failure mode and genesis of channel slope of South-to-North Water Diversion Project, we analyze expansive soil characteristics and its geological genesis combing with the geological sit-uation revealed by excavation and long-term monitoring data. The failure modes can be classified as crack by water loss-disin-tegration by water absorption, gully by rain erosion, slope failure and slurry flows, slope landslide, and the treatment measures for channel slope failure are proposed accordingly.