Evolution mechanism study of flow slide catastrophes in large waste dumps at the Nanfen iron mine

doi:10.1007/s10064-020-01881-0

	Evolution mechanism study of flow slide catastrophes in large waste dumps at the Nanfen iron mine
	Wang, Hai-bin 1; Yan, Fei 1; Li, Xiao-chun 1; Mi, Zi-jun 2; Li, Xiang-ming 4; Wang, Shao-quan 3
刊名	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
	2020-06-18
页码	15
关键词	Single-high terrace waste dump Chair-shaped gully foundation Retrogressive landslide Freeze-thaw cycle Soil particle transfer effect Lubrication effect with sluggish water
ISSN号	1435-9529
DOI	10.1007/s10064-020-01881-0
英文摘要	In this study, we applied historical matching and self-analogism methods, as well as laboratory physical-mechanics tests, to study the evolution mechanism of the collapse-slide-flow slide at the waste dump on the slope of the chair-shaped gully, as well as the evolution mechanism of the subsequent debris flow. Our analyses indicate that (1) an excessive fine particle content results in a relatively large specific surface area and further enhances water retention performance, (2) rainfall infiltration was concentrated at the contact surface between chair-shaped valley and bottom of the bulk, and (3) with high-intensity continuous rock discharge during the snow and ice period, a mixed frozen body of ice waste stone particles forms, such that ice melting in the spring leads to a sudden change in the shear strength near the contact interface between the waste rock pile foundation and the bulk. Dual effects, essential internal factors, i.e., shear strength and water retention, induced external factors, i.e., ice-freezing skeleton-melting structure collapse, and the chimney effect drive the slope toe of the waste dump. The weak interface of the Quaternary base gradually penetrates the interior of the dumping body, beginning to form from a single-stage traction landslide and evolving into a multi-stage rotary landslide. The sliding surface is characterized by the shear outlet at the front edge of the slope toe, quaternary base interface, and nearly vertical and steep trailing edge. During this movement, gasification on the sliding surface and particle rotation lead to long run-out sliding, which magnifies the scope of disaster.
资助项目	National Natural Science Foundation of China[51674238]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000543628500002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24435]
专题	中科院武汉岩土力学所
通讯作者	Yan, Fei
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.Min Co, Taiyuan Iron & Steel Grp Co Ltd, Taiyuan 030027, Peoples R China 3.Northern Engn & Technol Corp, MCC, Dalian 114009, Peoples R China 4.Min Co, Benxi Iron & Steel Grp Co Ltd, Benxi 030027, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hai-bin,Yan, Fei,Li, Xiao-chun,et al. Evolution mechanism study of flow slide catastrophes in large waste dumps at the Nanfen iron mine[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2020:15.
APA	Wang, Hai-bin,Yan, Fei,Li, Xiao-chun,Mi, Zi-jun,Li, Xiang-ming,&Wang, Shao-quan.(2020).Evolution mechanism study of flow slide catastrophes in large waste dumps at the Nanfen iron mine.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,15.
MLA	Wang, Hai-bin,et al."Evolution mechanism study of flow slide catastrophes in large waste dumps at the Nanfen iron mine".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2020):15.