强夯法在深厚层湿陷性黄土坝基处理中的应用

The application of heavy-tamping method in dealing with deep layer collapsible loess dam foundation

强夯法在在处理深厚层湿陷性黄土坝基具有技术可靠、效果明显,便于组织、施工简便,易于质量控制以及工期短、节省投资等优点.以宁夏海原县南坪水库大坝坝基采用强夯法处理为例,介绍了强夯法的作用机理,通过对实际场地进行强夯试验,确定了"锤重锤高、夯击次数、夯击遍数"等技术参数,按照确定的施工参数开始大面积强夯施工.施工完成后,经过质量检测与评定,其结果满足设计要求,工程质量全部评为优良.通过总结湿陷性黄土坝基的处理经验,以期对类似工程起到借鉴作用.

Heavy-tamping method has advatages of engineering reliability, abvious effect, convenient organization, easy construction and quality control, short days for construction and less cost when it was taked to deal with deep layer collapsible loess dam foundation. Take NaPing reservoir dam in HaiYuan Ningxia as an example, which used the heavy-tamping method. This paper introduced the mechanism of heavy-tamping method. After the experiment in the actual site, the parameter was fixed and The test result met the design requirement, the collapsible loess foundation treatment experience was summarized, in order to be used in similar engineering project.