气候变化领域集成服务门户(CCPortal): Thermal Recovery of Backfilled Pit in the Gulianhe Strip Coalmine in the Hola Basin in Northern Da Xing'Anling Mountains, NE China

CCPortal

DOI	10.3389/feart.2022.806022
	Thermal Recovery of Backfilled Pit in the Gulianhe Strip Coalmine in the Hola Basin in Northern Da Xing'Anling Mountains, NE China
	He, Ruixia; Li, Yan; Jin, Huijun; Wang, Hongwei; Jin, Xiaoying; Zhu, Meiquan; Li, Xinyu; Huang, Yadong; Jin, Doudou; Ma, Futing
通讯作者	Li, Y ; Jin, HJ (通讯作者)，Chinese Acad Sci, State Key Lab Frozen Soils Engn, Da Xinganling Observat & Res Stn Frozen Ground En, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China. ; Li, Y ; Jin, HJ (通讯作者)，Univ Chinese Acad Sci, Sch Resources & Environm, Beijing, Peoples R China. ; Jin, HJ (通讯作者)，Northeast Forest Univ, Sch Civil Engn, Northeast China Observ & Res Stat Permafrost Geoe, Inst Cold Reg Sci & Engn,Minist Educ, Harbin, Peoples R China.
发表日期	2022
EISSN	2296-6463
卷号	10
英文摘要	In the northern Da Xing'anling Mountains in Northeast China on the southern margin of the Eastern Asia permafrost body, the ground thermal state and boreal ecological environment are sensitive to climate change and human activities. Since the 1980s, the Hola Basin here has been continuously and extensively developed. In particular, open pits and later backfilling in strip coal mining alters land-atmospheric hydrothermal exchanges in permafrost regions, leading to serious damages to the permafrost environment and boreal forest. After mining, pits need to be backfilled timely and properly for hydrothermal recovery of Xing'an permafrost and the boreal ecological environment. In this study, based on the comparative analysis of monitored ground temperatures in backfilled and undisturbed areas, influencing factors of thermal recovery after backfilling were analyzed through numerical simulations. Results show that the thermal recovery of permafrost in the backfilled area is closely related to temperature, depth, material, and soil moisture content of backfill. The warmer, finer, and thicker the backfill soils, the longer the permafrost recovery. Thermal recovery of permafrost also depends on the moisture content of backfill; the shortest recovery occurs at 15-25% in the backfilled soil moisture content. Based on numerical simulations and combined with enlightenments from features of the ecosystem-protected Xing'an permafrost in Northeast China, a composite configuration of organic soil, crush-rock layer, and proper re-vegetation measures is advised. Based on prudent regulation of heat transfer modes, this composite backfilling method can effectively cool the backfilled ground and can even possibly offset the climate warming.
关键词	MINING ACTIVITIES PERMAFROST CLIMATE MINE DEGRADATION PLATEAU LAND
英文关键词	strip coalmine; Xing'an permafrost; open-pit; backfilling; thermal recovery; influencing factor
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000752635600001
来源期刊	FRONTIERS IN EARTH SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254650
作者单位	[He, Ruixia; Li, Yan; Jin, Huijun; Wang, Hongwei; Huang, Yadong; Jin, Doudou] Chinese Acad Sci, State Key Lab Frozen Soils Engn, Da Xinganling Observat & Res Stn Frozen Ground En, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Li, Yan; Jin, Huijun; Huang, Yadong; Jin, Doudou] Univ Chinese Acad Sci, Sch Resources & Environm, Beijing, Peoples R China; [Jin, Huijun; Jin, Xiaoying; Zhu, Meiquan] Northeast Forest Univ, Sch Civil Engn, Northeast China Observ & Res Stat Permafrost Geoe, Inst Cold Reg Sci & Engn,Minist Educ, Harbin, Peoples R China; [Li, Xinyu] Harbin Inst Technol, Sch Civil Engn, Harbin, Peoples R China; [Ma, Futing] Gulianhe Strip Coalmine, Heilongjiang, Peoples R China
推荐引用方式 GB/T 7714	He, Ruixia,Li, Yan,Jin, Huijun,et al. Thermal Recovery of Backfilled Pit in the Gulianhe Strip Coalmine in the Hola Basin in Northern Da Xing'Anling Mountains, NE China[J]. 中国科学院西北生态环境资源研究院,2022,10.
APA	He, Ruixia.,Li, Yan.,Jin, Huijun.,Wang, Hongwei.,Jin, Xiaoying.,...&Ma, Futing.(2022).Thermal Recovery of Backfilled Pit in the Gulianhe Strip Coalmine in the Hola Basin in Northern Da Xing'Anling Mountains, NE China.FRONTIERS IN EARTH SCIENCE,10.
MLA	He, Ruixia,et al."Thermal Recovery of Backfilled Pit in the Gulianhe Strip Coalmine in the Hola Basin in Northern Da Xing'Anling Mountains, NE China".FRONTIERS IN EARTH SCIENCE 10(2022).