Seepage analysis of a gate dam with a layered deep deposit foundation

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Seepage analysis of a gate dam with a layered deep deposit foundation
	Wu MX(吴梦喜); Yang LZ(杨连枝); Hu XH; Wu MX(吴梦喜)
	2013
会议名称	The 3rd International Symposium on Life-Cycle Civil Engineering
会议日期	OCT 03-06, 2012
通讯作者邮箱	wumx@imech.ac.cn
会议地点	Hofburg Palace, Vienna, Austria
页码	774-781
通讯作者	吴梦喜
中文摘要	The foundation of Ying-liang-bao gate dam consists of 5 layers of sand or gravel soils alternatively with a total depth up to 126.5 m. The seepage coefficient of gravel layers is more than 100 times that of sand layers. A concrete cutoff wall up to 80 meters depth is used in the first design scheme to control the seepage. Although the cross water head of the dam is only about 30 meters, the subsoil is susceptible to internal erosion. The calculated seepage field of the scheme indicates that the internal erosion risk of the sand layers is very high. The reduction of flux is not effective via the depth increase of the partially cutoff wall, unless the covering layers are cut off completely by a closed wall. Not only the internal erosion risk in the relatively impermeable layers is difficult to reduce via increasing the depth of a partially cutoff wall, but also the risk in the soils beneath the suspended wall increase greatly and thus jeopardizes the structure safety of the cutoff wall. The scheme with a closed cutoff wall is erosion safety and it is recommended to and adopted by the preliminary design. A scale reduced element is proposed to evaluate the appropriate position of the cutout boundary in the covering layers. It shows that the position of an imperious boundary has significant influence to the total flux of the foundation with alternatively strong and weak permeability layers.
合作状况	国内
产权排序	[Wu, Mengxi;Yang, Lianzhi] Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; [Hu, X.H.] HydroChina Chengdu Engineering corporation, Chengdu, Sichuan Province,China
会议录	Proceedings of the Third International Symposium on Life-Cycle Civil Engineering
会议录出版者	Taylor & Francis Group
会议录出版地	London
学科主题	岩体力学和土力学 ; 渗流
语种	英语
ISBN号	978-0-415-62126-7
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46874]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Wu MX(吴梦喜)
推荐引用方式 GB/T 7714	Wu MX,Yang LZ,Hu XH,et al. Seepage analysis of a gate dam with a layered deep deposit foundation[C]. 见:The 3rd International Symposium on Life-Cycle Civil Engineering. Hofburg Palace, Vienna, Austria. OCT 03-06, 2012.