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为了准确测定煤层瓦斯抽采半径,分析了影响瓦斯抽采半径测定的主要因素,并对主要影响因素进行了优化。通过在小屯煤矿采用相对瓦斯压力降低法现场测定表明,该方法用于测定瓦斯抽采半径效果较好,并结合抽采前后煤层瓦斯含量进行对比验证。
In order to accurately measure the gas drainage radius of coal seam, the main factors that affect the gas drainage radius are analyzed, and the main influencing factors are optimized. The field measurement by using relative gas pressure reduction method in Xiaotun Coal Mine shows that the method is effective for measuring the gas drainage radius and comparing with the coal gas content before and after the extraction.