Having analysed the “test on the gas drainage under suction in goaf”, the failure cause has been found.Based on the analysis of the gas migration law, it has proposed an idea of “gas drainage under suction in goaf” so as to provide some new theoretical basis for the performance. It is said that the atmasphere environment protection and safety production will improve and a benifical result will be obtained.%通过对采空区抽放瓦斯试验进行分析，找出了试验失败的原因．在对采空区瓦斯流动规律分析研究的基础上，提出了采空区瓦斯抽放的设想，为采空区瓦斯抽放提出了新的理论依据．研究认为，进行采空区瓦斯抽放不仅有利于大气环境保护和安全生产，而且还可以创造出可观的经济效益．
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