ABSTRACT
This paper puts forward the technique thoughtway to prevent coal and gas outburst accident by using the methane hydration. Basing on the basic conditions and the phases equilibrium equation of forming methane hydrates, authors forecast the temperature and pressure conditions that the gas samples of two coal seams form methane hydrates and analyze the possibility of forming spontaneously the methane hydrate in the coal seams from several aspects, such as, temperature pressure, and gas components. The paper discusses the feasibility of urging the methane in coalbeds to form hydrate by infusing water at the middle or high pressure and adding the surfactants to the water solution to help forming of hydrates introduces the structure of experiment system and experiment methods, and indicates the problems that are still unsolved before this techniques realizes its industrialization appliance, in terms of the primary trial results.
