Simulation of the dynamic disturbance characteristics of the soft sediment in the Diexi ancient dammed lake, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2021 > Vol18 No.4

	Simulation of the dynamic disturbance characteristics of the soft sediment in the Diexi ancient dammed lake, China
	Wang Xiao-qun; Wei Jie; Zhao Jia-kang; Zhou Zhou; Huang Xin
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2021
卷号	18 期号:4 页码:990-1002
关键词	Ancient dammed lake Lacustrine sediment Soft sediment Palaeoearthquake Simulation test
ISSN号	1672-6316
英文摘要	In an earlier study of the Diexi ancient dammed lake along the Minjiang River in Southwest China, 10 disturbed layers with envelope and flame structures were found in more than 240 m of lacustrine sediments. In this paper, the soft-sediment disturbances caused by earthquakes in the Diexi ancient dammed lake were studied based on field investigations and laboratory core observations. A two- to three-degree-of-freedom spring-type earthquake simulation vibration table was used to carry out disturbance tests on lacustrine sediments under different dynamic conditions. The results support the following conclusions: (1) The disturbance layers in the lacustrine sediments were caused by strong earthquakes in the region. (2) The characteristics of the disturbance layers are related to the seismic parameters and the degree of sediment consolidation. (3) The greater the earthquake intensity is, the greater the disturbance amplitude is; moreover, the lower the consolidation degree is, the greater the disturbance amplitude. (4) The simulation tests verify that the disturbance layers in the sediments of the Diexi ancient dammed lake correspond to strong earthquakes in the region. These results are valuable for ongoing palaeoseismic research in the region.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/57320]
专题	Journal of Mountain Science_Journal of Mountain Science-2021_Vol18 No.4
推荐引用方式 GB/T 7714	Wang Xiao-qun,Wei Jie,Zhao Jia-kang,et al. Simulation of the dynamic disturbance characteristics of the soft sediment in the Diexi ancient dammed lake, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2021,18(4):990-1002.
APA	Wang Xiao-qun,Wei Jie,Zhao Jia-kang,Zhou Zhou,&Huang Xin.(2021).Simulation of the dynamic disturbance characteristics of the soft sediment in the Diexi ancient dammed lake, China.JOURNAL OF MOUNTAIN SCIENCE,18(4),990-1002.
MLA	Wang Xiao-qun,et al."Simulation of the dynamic disturbance characteristics of the soft sediment in the Diexi ancient dammed lake, China".JOURNAL OF MOUNTAIN SCIENCE 18.4(2021):990-1002.