Research on the Combination of Drainage and Surface Utilization of Deep Cold Ash Hot Water in Pingdingshan No.8 Mine
The second level 21 coal mining in Pingdingshan No.8 Mine is threatened by the water inrush of the cold ash karst water under high temperature and high pressure,water temperature 50～52℃,water quality is rich in metasilicic acid and strontium and suitable for drinking natural mineral water,because the water inrush coefficient exceeds the critical value,hydrophobic depressurization is required.Pingdingshan No.8 Mine combines the drainage of cold ash water with the domestic water of the ground industrial square,the comprehensive utilization project of geothermal water has been completed,the effect of karst water on underground coal mining has been eliminated,it also saves millions of dollars in coal burning and drainage costs for the mine every year.
hydrophobic depressurizationkarst hot waterresource utilizationPingdingshan No.8 Mine
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