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Simple law of coal seam hosting a geological structure in the mining area, mainly sandstone aquifer fractured aquifers, larger seasonal changes of water, water in Ordovician limestone and the 15th floor, distant, less water inrush risk.

In the mining area the geologic structure simple coal bed tax saves compares the rule, the water-bearing stratum mainly is the sandstone crevasse water-bearing stratum, the water volume is big along with the season change, the Austria ash water level is away from with 15 coal bed ledger walls far, t

mining of coal seams that geological formations is a relatively simple pattern, the aquifer is mainly sandstone chasm aquifer, the water level changes with the seasons, O'Neill, gray water 15 coal seams with a relatively long distance board, backplane and water hazard is small.

Simple law of coal seam hosting a geological structure in the mining area, mainly sandstone aquifer fractured aquifers, larger seasonal changes of water, water in Ordovician limestone and the 15th floor, distant, less water inrush risk.