A Classification Method for Water Conservation Coal Mining Mine/Mining Area
A technology for water-retaining coal mining and mines, which is applied in ground mining, underground mining, special mining, etc., can solve the problems of spring and lake water reduction, drying up, vegetation withering and desertification intensification, and achieve the effect of simple and practical division method
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[0071] The area where the Yushen mining area is located is an arid-semi-arid area (annual average precipitation is less than 500mm). The water resources with direct water supply significance and ecological value in the well field are the surface water system and the phreatic water of Salawusu Formation sand layer. For the unit area of surface water system water resources (1km 2 ) storage capacity, first calculate the static total storage capacity of each river’s water resources based on the following formula, and then calculate the unit area of each river (1km 2 ) storage capacity.
[0072] The static reserves of each river are:
[0073] Q j =Q×L / V
[0074] In the formula, Q j is the static reserve of the river (in m 3 ); Q is the flow rate (in L / s); L is the length of the river (in m); V is the flow velocity (in m / s).
[0075] For the unit area (1km 2 ) storage capacity, count the drilling data in the mining area, sort out the thickness of the phreatic aquifer in ...
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