工作面采动瓦斯流场分布规律研究

Study on Distribution of Gas Flow Fields in Working Face Under the Condition of Mining

掌握采空区瓦斯分布规律,是制定合理的抽采采空区瓦斯技术方案的前提。基于五虎山煤矿1201工作面回采过程中出现回风瓦斯超限的状况,在分析该工作面的瓦斯涌出来源的基础上,采用FLUENT数值软件,对1201工作面的采动瓦斯流场分布进行了模拟研究,模拟结果合理的解释了正常回采和顶板来压期间瓦斯涌出的不同规律,并为该工作面采空区瓦斯治理技术方案的制定提供了理论依据。现场实测结果证明了研究结论的科学、可靠性。

To master the distribution laws of gas flow fields is the premise of designing reasonable project for goaf gas extraction. Disallowed gas concentration occurred in return Air occurred at 1201-Face in WU Hu-shan mine. So studying the gas distribution was necessary. On the basis of gas emission analyzing, the distribution of gas flow fields in 1201-face under the condition of mining was researched by FLUENT numerical software. The difference of gas emission at the normal recovery and roof weighting periods was rationally explained. And theory basis was provided by the results to design reasonable project for goaf gas extraction. The research conclusion was verified scientificly and reliably by the field measured results.