Time-Dependent Ground Movement Behavior in a Metal Mine

doi:10.1061/(ASCE)GM.1943-5622.0001479

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

	Time-Dependent Ground Movement Behavior in a Metal Mine
	Xia, Kaizong ; Liu, Xiumin ; Chen, Congxin ; Zheng, Yun ; Lu, Zude ; Deng, Yangyang
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2019
卷号	19 期号:8 页码:-
关键词	Metal mine Excavation of underground orebody Time-dependent ground movement behavior In situ stress Discontinuity
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001479
英文摘要	The deformation monitoring data including the horizontal and vertical displacements from Chengchao Iron-ore Mine were gathered over 10 years. Combined with the field macrofailure characteristics at the ground surface, the time-dependent ground movement behaviors induced by the underground orebody excavation were investigated. Results show that the time-dependent deformation behaviors within the surrounding rock masses are very different with the distance to the mined-out areas increasing. Close to the mined-out areas, the time-dependent deformation behavior can be described by two distinctive stages termed as the "primary steady-state creep" and "progressive" stages. Slightly away from the mined-out areas, the time-dependent deformation behavior can be divided into three distinctive stages termed as the primary steady-state creep, "regressive," and progressive stages. Far away from the mined-out areas, the surrounding rock mass creeps with a low deformation rate, and the time-dependent deformation behavior is still at the primary steady-state creep stage. The analysis shows that the groundwater can have a remarkable effect on the deformation of the rock masses by causing the movement rate to become faster. The main reason why the regressive stage occurs in the southeastern area of the main transportation tunnel can be attributed to the rainfall, and the period for the maximum deformation rate within the surrounding rock masses corresponds to the rainfall season of the year. The onset-of-failure (OOF) point within the displacement-time curves can be defined as when the failure surface begins to form at the deep part of the rock masses. The time-dependent ground movement behavior of the mine can be divided into four stages: the initial caving of the roof strata, the large-scale caving of the roof strata, when the failure surface begins to form at the deep part of the rock masses around the stack-site and the mine road, and when the failure surface begins to form at the deep part of the rock masses around the southeastern area of the main transportation tunnel.
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000471754100012
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14935]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, 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	Xia, Kaizong,Liu, Xiumin,Chen, Congxin,et al. Time-Dependent Ground Movement Behavior in a Metal Mine[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2019,19(8):-.
APA	Xia, Kaizong,Liu, Xiumin,Chen, Congxin,Zheng, Yun,Lu, Zude,&Deng, Yangyang.(2019).Time-Dependent Ground Movement Behavior in a Metal Mine.INTERNATIONAL JOURNAL OF GEOMECHANICS,19(8),-.
MLA	Xia, Kaizong,et al."Time-Dependent Ground Movement Behavior in a Metal Mine".INTERNATIONAL JOURNAL OF GEOMECHANICS 19.8(2019):-.