A hydrogeological property of Jurassic red strata in Yanzhou coal mining area

Jurassic red strata water is one of main hazard in Yanzhou coal mining area.In order to control red strata water,the red strata material composition,micro-porosity and branch,rock mechanical characteristics and permeability are measured,meanwhile the distraction height numerical simulation of coal seam roof strata and fracture development rule caused by mining action are described,and red strata water inrush criterion and danger division in Yanzhou coal mining area are presented.The study established identification model for red strata water and obtained a water dangerousness zone dividing map,which would be have some references value of water hazard control for other similar coal mining area.