干旱区生态环境知识资源中心(Arid): Potential impacts of mining of super-thick coal seam on the local environment in arid Eastern Junggar coalfield, Xinjiang region, China

Arid

DOI	10.1007/s12665-020-8806-y
	Potential impacts of mining of super-thick coal seam on the local environment in arid Eastern Junggar coalfield, Xinjiang region, China
	Zeng, Qiang 1,2,3; Shen, Li 1,2,3; Yang, Jie 1,2,3
通讯作者	Zeng, Qiang
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2020
卷号	79 期号:4
英文摘要	Coal mining has serious impacts on local environment, including damage to the land and soil by subsidence, damage to ground-water systems through the fracturing and subsiding of overlying rocks, contamination of surface waters with acid mine drainage, and pollution of the atmosphere by release of toxic gases. The damage to ground water and its consequent impacts on the regional environment is the core of research of the coal mining from the perspective of environment protection. The present paper focuses on the changes of surface vegetation coverage, the pollutants released from pit coal power plants, and the damages to the ground aquifers induced by mining activities in arid Eastern Junggar coalfield of China. At first, the authors investigated the changes of surface vegetation coverage, since mining began in the 2000s using Landsat data. Results show that the low surface vegetation coverage (grade 1 plus grade 2) in the southern part of the region decreased from 11.62 x 10(8) m(2) in 2003 to 9.57 x 10(8) m(2) in 2017 (-17.6%), while it increased from 11.58 x 10(8) m(2) in 2003 to 12.70 x 10(8) m(2) in 2017 (+ 9.7%) in the eastern part. The high surface vegetation coverage (grade 3 plus grade 4) in the southern part increased from 1.94 x 10(8) m(2) in 2003 to 4.00 x 10(8) m(2) in 2017 (+ 106.2%), while it decreased from 4.39 x 10(8) m(2) in 2003 to 3.26 x 10(8) m(2) in 2017 (-25.74%) in the eastern part. The data of annual precipitation during the same period in this area show that the changes of surface vegetation coverage have less relationship with the annual precipitation, which indicates that the mining activities is probably the major factor for that. Second, a statistic of air pollutants generated from pit coal power plants was made based on data of references. Results show that the estimated gaseous pollutant emissions increased as 865.23 tons of smoke particles, 5940.73 tons of SO2, and 7584.48 tons of NO2 in 2013, which increased rapidly with 9.73 times the smoke particle, 21.69 times the SO2, and 9.24 times the NO2 than that of 2007. And then, the physical and numerical simulation of the damage of mining activities to aquifers was made to show the permeability of the reference points of overlying aquifers varies associated with mining activities. Results show that the porous rock matrix permeability has a negative relationship with fluctuation during mining, while the fracture permeability shows a positive one. Finally, a case investigation in southern area surrounding this coalfield was illustrated. Result shows that the local ground-water level decreased by 16 m difference from the altitude level of + 774 m in 2003 to + 758 m in 2013. Data and results from this study presented the already and the potential pollutions and damages to local environment induced by the mining activities in this region.
英文关键词	Eastern Junggar coalfield Super-thick coal seam mining Landsat data Ground-water level Numerical simulation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000512961600001
WOS关键词	REFUSE DUMPS ; VEGETATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314420
作者单位	1.Xinjiang Univ, Sch Resource & Environm Sci, Urumqi 830046, Peoples R China; 2.Xinjiang Univ, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China; 3.Xinjiang Univ, Minist Educ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Qiang,Shen, Li,Yang, Jie. Potential impacts of mining of super-thick coal seam on the local environment in arid Eastern Junggar coalfield, Xinjiang region, China[J]. 新疆大学,2020,79(4).
APA	Zeng, Qiang,Shen, Li,&Yang, Jie.(2020).Potential impacts of mining of super-thick coal seam on the local environment in arid Eastern Junggar coalfield, Xinjiang region, China.ENVIRONMENTAL EARTH SCIENCES,79(4).
MLA	Zeng, Qiang,et al."Potential impacts of mining of super-thick coal seam on the local environment in arid Eastern Junggar coalfield, Xinjiang region, China".ENVIRONMENTAL EARTH SCIENCES 79.4(2020).