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	Simulation analysis of the impact of excavation backfill on permafrost recovery in an opencast coal-mining pit
	Cao, Wei1,2; Sheng, Yu1; Wu, Jichun1; Li, Jing1; Li, Jinping3; Chou, Yaling4
刊名	ENVIRONMENTAL EARTH SCIENCES
	2016-05-01
卷号	75期号:9页码:10
关键词	Simulation analysis Excavation backfill Impact analysis Permafrost recovery Opencast coal-mining pit
ISSN号	1866-6280
DOI	10.1007/s12665-016-5659-5
通讯作者	Sheng, Yu(sheng@lzb.ac.cn)
英文摘要	The article attempts to investigate the status of permafrost recovery after excavation backfill in an opencast coal mine. To do that, we forecast the permafrost recovery under certain initial temperatures and different boundary conditions by using the numerical simulation method. The results show that the filling temperature significantly influences permafrost recovery after backfilling. When the filling temperature decreases from +2.0 to -2.0 degrees C, the permafrost recovery rate will greatly accelerate, and the permafrost thickness will significantly increase. When the surface temperature of the filling is positive, the permafrost recovery at the bottom of the excavation will be more difficult than when the temperature is negative. The permafrost recovery rate will be slow, and the permafrost thickness will be thin. The permafrost recovery also gradually speeds up the thickening with decreasing natural surface temperature. Thus, backfilling should be conducted in the cold season, and cooling treatment should be applied to the filling before backfilling. The treatment will ensure that the permafrost recovery is faster and more stable. This measure is also conducive to the recovery of the ecological environment of the mine.
收录类别	SCI
WOS关键词	PLATEAU ; CHINA
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000376030100113
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557341
专题	寒区旱区环境与工程研究所
通讯作者	Sheng, Yu
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.Chongqing Land Resources & Housing Surveying & Pl, Chongqing 400020, Peoples R China 3.CCCC First Highway Consultants Co LTD, Xian 710065, Peoples R China 4.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Cao, Wei,Sheng, Yu,Wu, Jichun,et al. Simulation analysis of the impact of excavation backfill on permafrost recovery in an opencast coal-mining pit[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(9):10.
APA	Cao, Wei,Sheng, Yu,Wu, Jichun,Li, Jing,Li, Jinping,&Chou, Yaling.(2016).Simulation analysis of the impact of excavation backfill on permafrost recovery in an opencast coal-mining pit.ENVIRONMENTAL EARTH SCIENCES,75(9),10.
MLA	Cao, Wei,et al."Simulation analysis of the impact of excavation backfill on permafrost recovery in an opencast coal-mining pit".ENVIRONMENTAL EARTH SCIENCES 75.9(2016):10.

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