南水北调中线禹长段湿陷性黄土段渠道设计

摘要

南水北调中线总干渠禹长段沿线分布大量湿陷性黄土，对此必须进行地基工程处理。在分析湿陷性黄土地基对渠道影响的基础上，阐述了设计中应着重考虑的工程处理方法，包括处理原则、设计分段、计算方法以及计算指标的选取。根据湿陷性黄土的强弱，提出了有针对性的地基处理方案，如土挤密桩、强夯处理、重夯处理等。并指出在具体实施时，应依据相关生产性试验调整设计参数，确保处理后的地基安全可靠。%A large amount of collapsible loess was distributed along the main canal of Yuzhou to Changge section of Middle Route Project of South to North Water Diversion, so the engineering treatment was needed for the foundation. The influence of collapsible loess foundation on the canal was analyzed. The engineering treatment measures worth being considered were de-scribed, such as treatment principle, sectional design, calculating method and calculation indexes selection. The correspanding foundation treatment measures was put forward according to the collapsibility, including soil compaction pile, dynamic compaction construction and heavy tamping construction. It was pointed out that in the implement of these measures, the design indexes should be adjusted according to the correlative productive trial .