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Water protection in the western semiarid coal mining regions of China: A case study 被引量:5

Water protection in the western semiarid coal mining regions of China:A case study
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摘要 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. 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.
出处 《International Journal of Mining Science and Technology》 SCIE EI 2012年第5期719-723,共5页 矿业科学技术学报(英文版)
基金 the sponsor by the National Natural Science Foundation of China (No. 50974115) the Program of Introducing Talents of Discipline to Universities (No.B07028)
关键词 Water-protection Coal mining Mine water utilization rate Aquifuge barrier Arid region 水资源保护 半干旱区 煤炭开采 西部地区 中国 案例 保护水资源 综采工作面
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