Simulation analysis of the impacts of underground mining on permafrost in an opencast coal mine in the northern Qinghai–Tibet Plateau

doi:10.1007/s12665-017-7047-1

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	Simulation analysis of the impacts of underground mining on permafrost in an opencast coal mine in the northern Qinghai–Tibet Plateau
	Cao, Wei 2; Sheng, Yu 2; Wu, Jichun 2; Li, Jing 2; Chou, Yaling 1; Li, Jinping 3
刊名	Environmental Earth Sciences
	2017-10-01
卷号	76 期号:20
关键词	Boreholes Coal Freezing Heat conduction Permafrost Thawing Effect of temperature Opencast coal minings Permafrost environment Simulation analysis Thermal disturbance Tibet Plateau Two-dimensional heat conduction Underground mining
ISSN号	18666280
DOI	10.1007/s12665-017-7047-1
英文摘要	Based on two-dimensional heat-conduction equations with a phase-change component, this study investigates the impact of underground mining on the permafrost environment in an opencast coal mining pit. The dynamics of the maximum thawed and freezing depths at different depths around a borehole wall are determined. The spatial distributions of these dynamics are also determined at different locations of the wall profile. The results show that (1) the maximum freezing depth tends to increase over 100 years; (2) the maximum thawed depth increases along a borehole wall over 100 years. In particular, the maximum thawed depth increases faster near the junctions of permafrost and seasonally frozen soil; (3) due to the small cross section of mining laneways, coal mining does not cause rapid increases in permafrost temperature around borehole walls. Once disturbance to permafrost around a borehole wall decreases, the once-insignificant effect of temperature will become more obvious. Underground mining does have some impacts on permafrost surrounding borehole walls, but it does not cause large areas of deformation due to thermal disturbance. © 2017, Springer-Verlag GmbH Germany.
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
语种	英语
出版者	Springer Verlag
WOS记录号	WOS:000413674900014
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114671]
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730000, China; 2.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou; 730000, China; 3.CCCC First Highway Consultants Co., LTD, Xi’an; 710065, China
推荐引用方式 GB/T 7714	Cao, Wei,Sheng, Yu,Wu, Jichun,et al. Simulation analysis of the impacts of underground mining on permafrost in an opencast coal mine in the northern Qinghai–Tibet Plateau[J]. Environmental Earth Sciences,2017,76(20).
APA	Cao, Wei,Sheng, Yu,Wu, Jichun,Li, Jing,Chou, Yaling,&Li, Jinping.(2017).Simulation analysis of the impacts of underground mining on permafrost in an opencast coal mine in the northern Qinghai–Tibet Plateau.Environmental Earth Sciences,76(20).
MLA	Cao, Wei,et al."Simulation analysis of the impacts of underground mining on permafrost in an opencast coal mine in the northern Qinghai–Tibet Plateau".Environmental Earth Sciences 76.20(2017).