Effect of fine-grained dipping interlayers on mechanical behavior of tailings using discrete element method

doi:10.1016/j.enganabound.2019.03.029

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Effect of fine-grained dipping interlayers on mechanical behavior of tailings using discrete element method
	Chen, Qinglin ; Zhang, Chao ; Yang, Chunhe ; Ma, Changkun ; Pan, Zhenkai
刊名	ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
	2019
卷号	104 页码:288-299
关键词	Fine-grained interlayer Deformation mode Micro-mechanism DEM Contact fabric
ISSN号	0955-7997
DOI	10.1016/j.enganabound.2019.03.029
英文摘要	Due to the presence of fine-grained interlayers (frequently called lenticles), the stability of tailings dams can deteriorate. In this study, a two-dimensional numerical model with flexible boundary was constructed, and biaxial tests were carried out for samples with interlayers at different dip angles. The influence of the interlayer inclination on the mechanical properties of tailings was analyzed. The simulation results revealed that the shear strength of tailings with interlayers decreases with the increase in the interlayer dip angle. Obvious anisotropy of shear strengths was observed due to the presence of interlayers. All the deformations of the samples with interlayers were well captured in the DEM simulations. Bulging deformations were found in the samples with interlayers at dip angles of 0, 15 and 30. Shear slip along the fine interlayer plane was generated in the samples with inter layers with dip angles of 45 and 60. The principal orientation of the contact unit normal and the normal contact force aligns with the loading direction for the samples with interlayer at small dip angle (i.e., 0). However, for the sample with interlayer at large dip angle (i.e., 60), the principal orientation trends to the direction normal to the interlayer.
WOS研究方向	Engineering ; Mathematics
语种	英语
WOS记录号	WOS:000469522100024
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14962]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Coll Resources & Environm Sci, Chongqing 400044, Peoples R China; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Chen, Qinglin,Zhang, Chao,Yang, Chunhe,et al. Effect of fine-grained dipping interlayers on mechanical behavior of tailings using discrete element method[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2019,104:288-299.
APA	Chen, Qinglin,Zhang, Chao,Yang, Chunhe,Ma, Changkun,&Pan, Zhenkai.(2019).Effect of fine-grained dipping interlayers on mechanical behavior of tailings using discrete element method.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,104,288-299.
MLA	Chen, Qinglin,et al."Effect of fine-grained dipping interlayers on mechanical behavior of tailings using discrete element method".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 104(2019):288-299.