Classification of the hydrogeological type of coal mine and analysis of its characteristics in China

In order to implement the demands of Rule of Mine Prevention and Cure Water Disaster and Coal Mine Safety Regulations, the basic situation and characteristics of hydrogeological type classification in China's coal mine were summarized and put forward after the systematically surveying, counting and analysing of the data and information in 26 provinces, autonomous regions and municipalities. Meanwhile, the coal basic characteristics, establishment, equipments and security situation were analyzed in the whole nation and every province, city and region from the number of coal mine, water inflow, water content coefficient, complicated extent of hydrogeological type, specialized departments of controlling water, technical personnel, workers with certificate for water drainage and special drilling machines of discharging water. The characteristics of hydrogeological type, the difficulties coming from the main water disaster, the organization of water prevention and control and safeguard measures in the four major coal-accumulation regions were also stated.