For the purpose of promoting the safe production and effectively preventing water inrush disaster,this paper summarized the basis and method for the mining district division under pressure.

The thesis takes eight coal mins as examples in different areas of the Xinglong county and uses grey interrelation assessment model to analyze quantificationally a good many non-linear and dynamic factors which effect water inrush disaster in coal mine,and then gets an actual result,finally finds the true reason why the disaster happened.

The water self-clarification ability in the reservoir area is much lower and the risk of the emergency of water pollution is more serious after the accomplishment of water storage in Three Gorges.

Thinking on setting up Chinese rescue system for accident;

Usually there is high-content of hydrogen-sulfide gas in China oil-gas field especially in Sichuan province;it brings serious corrosion to the equipment of the well head,so occasionally accident may happen easily.

The paper introduces the current situation of hydrology in response to unexpected water pollution,and concerning the problems,put forward some ideas and suggestions on the capacity construction of hydrological monitoring to better serve the economic and social construction.