近距离高瓦斯煤层群矿井瓦斯灾害治理技术研究

为了解决乌达矿区高瓦斯煤层群开采条件下瓦斯灾害治理难题，采用DGC瓦斯含量直接测定装置开展了大量试验，并结合多元回归分析的方法，获得了矿区主采煤层瓦斯基本参数的预测模型；基于此，采用长距离定向钻孔对回采工作面实施大面积区域预抽，并在回采时结合高位钻孔对卸压瓦斯实施抽采，解决了本煤层及邻近层瓦斯预抽和上隅角瓦斯超限难题，形成了近距离高瓦斯煤层群瓦斯灾害治理技术。

Study on Treatment Technology of Coal Mine Gas Disaster with Close Distance and High Gassy Seam Group

To solve the difficult problem of gas control on condition of mining in high-gas seam group area in Wuda Coalfield，a large number of tests data were measured with DGC instrument for determining gas content directly. Prediction model of gas fundamental parameters of main mining coal seam was obtained by the multiple regression analysis method. Technology of long-distance directional drilling was adapted to drain gas of working face. And high-level borehole technology was used to drain relieved gas. Based on this，the problems of gas pre-drainage in mining coal-bed and adjacent seams and gas transfinite in upper corner during mining were solved. The treatment technology of coal mine gas disaster with close distance and high-gas seam group was formed.