Abstract:

High-pressure water coal mining conditions, the use of empirical and theoretical way coal seam floor limestone water inrush of water when the situation on the floor Limestone Water Bursting evaluation analysis, the impermeable layer has a thickness of 80m or so groups can be achieved with a pressure safety seam mining. In normal hydrophobic buck, based on the measures to be taken geophysical exploration or drilling impermeable layer thickness change, to ensure impermeable layer thinning in the case of floor grouting and other measures taken to implement safe mining.