Mine flood forecast
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I. Determination of the danger level of mine floods
(1) Use the water inrush coefficient to determine the danger level of mine water damage. The water inrush coefficient is the ratio of the hydrostatic pressure (kPa) in the aquifer to the thickness of the aquifer (m). The physical meaning is the limit water pressure that can be withstood by the thickness of the unit.
(2) Determine the degree of danger of mine water damage according to the influencing factors of hydrogeology. The method divides the risk of water damage in the mining area into five grades according to the complexity of hydrogeology.
Second, the compilation of mine flood forecasting map. According to the thickness of the aquifer and the water pressure value of each part of the mining area, calculate the water inrush coefficient of a certain mining level, compile a simple water inrush prediction map of the corresponding proportion, and then delineate the safety zone and the danger zone according to the critical value of the water inrush coefficient of the mining area. Another method for compiling flood forecasting maps is to define the level of groundwater disasters on the mining plan, and to formulate the best mine planning and measures to prevent water damage, strengthen the monitoring of hazardous areas, and ensure safe production.