The impact of disposal and treatment of coal mining wastes on environment and farmland

被引:259
作者
Bian, Zhengfu [1 ]
Dong, Jihong [1 ]
Lei, Shaogang [1 ]
Leng, Hailong [1 ]
Mu, Shouguo [1 ]
Wang, Hui [1 ]
机构
[1] China Univ Min & Technol, Inst Land Resources, Xuzhou, Jiangsu Prov, Peoples R China
来源
ENVIRONMENTAL GEOLOGY | 2009年 / 58卷 / 03期
关键词
Mining wastes disposal; Mined land reclamation; Mine environment; Mine landscape construction; MITIGATION; POLLUTION; DUMPS; MINE;
D O I
10.1007/s00254-008-1537-0
中图分类号
X [环境科学、安全科学];
学科分类号
083001 [环境科学];
摘要
In China, coal mining wastes have traditionally been dumped in cone-shaped heaps that have the potential to pollute air, soil and water environments and landscapes through dust generation, leachate production, self-ignition and as a consequence of an absence of vegetation cover. Since 1980s, the disposal technique for coal mining wastes has been changing and in many instances the wastes are now transported directly to subsided land as a fill to enable the reuse of that land. Thus, today, both coal mining waste dumps from the past and filled subsided lands are in existence. However, the comparative impacts of these different disposal techniques on the environment and farmland productivity have not been studied in detail. Using Dongtan (DT), Nantun (NT) and Xinglongzhuang (XLZ) coal mines as examples, the components of coal mining wastes and their potential pollution contribution to soil, surface water and ground water are tested in-situ. The results show that contaminants are released after self-ignition and weathering of coal mining wastes, but they are not above the allowable environmental standards. However, despite these findings, more and closer attention needs to be paid to the mobility, transportation and accumulation of these contaminants in the environment over time.
引用
收藏
页码:625 / 634
页数:10
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