大直径抽采钻孔在采面瓦斯综合治理中的应用

Application of Large-diameter Borehole in the Process of Gas Comprehensive Management in Coal Face

在煤层赋存变异系数大的高瓦斯和煤与瓦斯突出矿井,高位抽放巷和底板抽放巷等高投入瓦斯治理工程和手段不仅增加了治理的成本,还由于煤层赋存不稳定降低了工程的利用率。通过引入大功率钻机大直径钻孔,利用卸压带抽放和顶板裂隙带抽放等形式,阐述了一种全新高效、低成本的瓦斯治理方式,具有较好的应用效果和推广应用价值。

In the coal and gas outburst mine with high coal occurrence variation cofficient,some high-cost gas control schemes,such as roadway built for high-level gas draingage,roadway built for floor gas drainage,increased the cost of gas control. The utilization radio of these schemes were decreased because of the instability coal occurrence. This article introduced a new high-efficient and low-cost gas control method ,according to the way of gas drainage in stress-relax area and gas drainage through drilling boreholes by high-power drill.