煤层上覆邻近岩层瓦斯抽放钻孔施工技术

Construction technology of gas drainage drilling hole in overlying adjacent strata of coal seam

煤矿瓦斯灾害是煤矿生产中重大灾害之一,需要采取针对性措施进行预防。阳泉矿区煤层高瓦斯矿井和高突矿井上覆邻近岩层瓦斯含量高,仅本煤层瓦斯抽放不能有效解决回采时的瓦斯问题。因此本文以新景公司3105工作面为例,对上覆邻近岩层瓦斯抽放钻孔施工技术进行研究应用。实践表明,该技术应用效果良好,瓦斯抽出率高,一定范围内替代了高抽巷工程,节约了生产成本,缓解工作面回采衔接,保证了工作面回采的安全生产。

Coal mine gas disaster is one of the major disasters in coal mine production,which needs to take targeted measures to prevent.The gas content in the overlying strata of the high gas mine and the high outburst mine in the coal seam of Yangquan mining area is high.Only the gas drainage of the coal seam can not effectively solve the gas problem during the mining.Therefore,this paper took No.3105 Face of Xinjing Company as an example to study and apply the construction technology of gas drainage drilling holes in overlying adjacent rock strata.The practice showed that the application effect of this technology was good,the gas extraction rate was high,and the high drainage roadway project was replaced within a certain range,which saved the production cost,alleviated the connection of working face mining,and ensured the safe production of working face mining.