摘要
为了解在水流冲刷作用下反滤砂对土石坝心墙裂缝发展的保护作用的特点和机理,以西北地区某拟建土石坝心墙裂缝冲刷试验为例,采用逐级施加水头的试验方法,详细叙述了土石坝心墙裂缝冲刷试验过程及裂缝在水流冲刷过程中的特点。试验结果表明,宽度不大的裂缝在合适的反滤层保护下能防止心墙土体被水流冲刷。
In order to realize the characteristic and mechanism of flow washout for the crevice of core wall in an earth-rock dam, the soil samples obtained from the clay wall of a proposed reservoir in Northwest China are studied by the crack washout test, The process of test and the character of the crack in flow washout are recounted in detail. The results show that the filter layer can protect the core wall of earth-rock dam from flow erosion.
出处
《水利与建筑工程学报》
2008年第1期12-14,共3页
Journal of Water Resources and Architectural Engineering
基金
水利部"948"计划技术创新与转化项目(编号200408)
关键词
岩土工程
心墙裂缝
冲刷试验
geotechnical engineering
crack of core wall
washout test
