Grade types of water-preserved coal mining coalmines in ecologically fragile area

被引：0
|
作者：
Li W. [1 ]
Wang Q. [1 ]
Liu S. [1 ]
Wang S. [2 ]
机构：
[1] School of Resources and Geosciences, China University of Mining and Technology, Xuzhou
[2] Shanxi Coal and Chemical Technology Institute, Xi'an
来源：
Meitan Xuebao/Journal of the China Coal Society | 2019年 / 44卷 / 03期
关键词：
Eco-geological environment type; Ecologically fragile area; Environmental engineering geological patterns; Grade types of water-preserved coal mining coalmines; Shallow water; Water-preserved coal mining;
D O I：
10.13225/j.cnki.jccs.2018.6031
中图分类号：
学科分类号：
摘要：
Coal mining with water protection is an inevitable choice for the sustainable development of ecologically fragile mining areas. The study and application of coal mining with water protection is an urgent problem to be solved in coal development planning, construction and production in northwest China. Taking Yushen mining area in northern Shaanxi Province as an example, this paper studies the types of water-preserved coal mining coalmines in combination with the quantity distribution of shallow water resources (water-preserved coal mining target seam) and the impact of coal mining on shallow water resources. Firstly, the spatial occurrence structure characteristics of eco-water-coal measures strata in the study area are analyzed. Also, the eco-geological environment types for the purpose of water-preserved coal mining are proposed, which are divided into oasis type with phreatic water and bottomland in desert, oasis type with surface water and valley river, loess gully type with surface runoff, and regional deep groundwater enrichment type. Secondly, the distribution of total storage per unit area of shallow water resources is calculated and determined. Then, based on the influence degree of coal mining on ecological layer and shallow water, four types of environmental engineering geological patterns (basically unaffected model, gradually restored model after destruction, gradually deteriorated model and disaster model) are proposed. Based on the analysis of the key indicators affecting the division of environmental engineering geological patterns, including the height of the water-flowing fractured zone and the mining water-resisting of residual aquiclude, etc., the zoning threshold and determination method for environmental engineering geological patterns is established. Finally, based on the distribution characteristics of shallow water resources and environmental engineering geological patterns, the grade types of water-preserved coal mining coalmines are put forward for the first time, which is divided into normal mining mine, water-preserved coal mining first-class mine, water-preserved coal mining second-class mine and water-preserved coal mining third-class mine. © 2019, Editorial Office of Journal of China Coal Society. All right reserved.
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页码：718 / 726
页数：8
相关论文
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