膨胀土渠坡破坏机理及处理措施研究

膨胀土渠坡失稳破坏频率大，是渠道运行的最大安全隐患。通过对膨胀土渠坡破坏机理深入分析认为,土体膨胀性及结构面发育程度是控制渠坡稳定的内因，雨水、地表水、渠水入渗是引起渠坡失稳的主要外因。结合国内外大量工程实例分析,特别是南水北调中线南阳段膨胀土试验成果，指出了针对膨胀土渠坡不同的破坏机理与地质环境条件，所采取的坡面防护、工程抗滑、坡顶防渗等综合措施，以及加强观测与反馈分析，深入进行工程研究的建议。

Study on failure mechanism of expansive soil canal slope and treatment measures

The failure possibility of an expansive soil canal slope is large,which is the greatest threat to the canal operation safety.Through further analysis of failure mechanism of expansive soil canal slope,it is shown that the expansibility of soil body and development degree of structural plane are the internal causes for controlling the stability of canal slope;the infiltration of rainwater,surface water and canal water is the external cause.Referring to many projects both at home and abroad,especially the exp...