Water protection in the western semiarid coal mining regions of China： A case study

The coal industry in China has been moving from the semiarid eastern to the drier western regions since the beginning of this century.Water protection is of the utmost concern for coal mining in these regions.Lu＇an,as one of the state coal mining bases in China,has been seeing increasingly heavier p...

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Bibliographic Details
Published in:International journal of mining science and technology 2012-09, Vol.22 (5), p.719-723
Main Authors: Hanfu, Huang, Changshen, Wang, Haibo, Bai, Zihe, Wang
Format: Article
Language:English
Subjects:
Aquifuge barrier
Arid region
Coal mining
Mine water utilization rate
Water-protection
中国
保护水资源
半干旱区
案例
水资源保护
煤炭开采
综采工作面
西部地区
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Summary:The coal industry in China has been moving from the semiarid eastern to the drier western regions since the beginning of this century.Water protection is of the utmost concern for coal mining in these regions.Lu＇an,as one of the state coal mining bases in China,has been seeing increasingly heavier pressure for the protection of water resources.This article considers Lu＇an as an example and describes the ways these concerns may be alleviated.High mine-water utilization rates have effectively reduced wasting of water and,consequently,have reduced water demand.Using the top layers of the Ordavician as aquifuge barriers can prevent floor karst water inrush into the longwall face and can protect the regional Ordovician karst water resources at the same time.The strength of the overlying Quaternary clay can protect against roof collapse and has successfully preserved the Quaternary porous water resource.
ISSN:2095-2686
DOI:10.1016/j.ijmst.2012.08.022