Applications and studies about grouting on treating the gob areas of coal mine under highway

Based on over ten years' engineering experiences,the basic contents such as treating mechanism,treating standard,grouting design,grouting technics,inspections on qualities act about grouting the gob area of coal mine under highway are discussed carefully.The characteristics about the grouting construction are analyzed and evaluated.In order to guide the similar grouting construction for the future,the present problems of treating gob areas of coal mine under freeway are raised.