Fisher Discriminant Analysis for Coal Mining Inrush Water Source under Mining-Induced Disturbance and Inversion of Groundwater Recharge Relation
详细信息
- 责任者：Liu Xin (School of Resource and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Chen Luwang
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(4)
- 关键词：突水 ; water gushing ; 地下水补给 ; groundwater recharge ; 安徽 ; Anhui Province
- 页码：p.36-43
- 图表：illus., 2 tables, 15 refs.
- 分类号：1701
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
To reveal the cause of inaccurate discrimination of inrush water samples under mining-induced disturbance,and to speculate on the groundwater recharge relation,a Fisher discriminant model of inrush water source was established based on the past hydrochemical data from the Zhuxianzhuang coal mine.According to the results of inaccurate discrimination and its geological and hydrogeological conditions,the groundwater recharge relation was inversed.All water samples from the coal-bearing formation aquifer were correctly discriminated.It is concluded that the aquifer is relatively sealed and has little hydraulic connection with other aquifers.However,some water samples from the fourth aquifer of the Quaternary,the Jurassic conglomerate aquifer and the Carboniferous or Ordovician limestone aquifers were incorrectly discriminated,indicating that the aquifers have hydraulic connection to different degree in the process of coal mining.The inaccurate discrimination includes the recharge of the fourth aquifer of the Quaternary to the Jurassic conglomerate aquifer,and the recharge of the limestone aquifer to the fourth aquifer of the Quaternary through the south outcrop of the coal mine,which is validated by the dynamic condition of groundwater.A new research means is put forward by establishing discrimination model of inrush water source,analyzing the cause of inaccurate discrimination and inversing the groundwater recharge relation in order to understand exactly the cycle of groundwater under mining-induced disturbance in a coal mine.
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