Abstract
Mine hydrogeology conditions are very complex in china, especially in North China type coal mine. When the coal is being mined, it is seriously threatened by Ordovician karst water with high pressure. Water inrush accidents often happen in North China type coal mine which has become an important factor affecting the safety in production of the coal mine. Taking Dong Shan coal mine as an example, the paper analyzed the principle of water-inrush from coal floor of the mine by summarizing the mine water inrush in the coal mine. Early-warning indexes of water inrush which include water temperature, water pressure, stress and strain were built. Structure of prediction system for water-inrush disaster was designed, and the hardware and software of the system were developed. Industrial test for the prediction system was done in 51523 Faces. Practice shows that the prediction system can monitor early-warning indexes of water inrush in real time, and as well to distinguish the mine water inrush risk which can provide the foresight of the information for preventing water inrush disaster.
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