1581(3)综采工作面初采期顶板钻孔治理瓦斯技术
Shandong Coal Science and Technology（2023）
Abstract
为解决高瓦斯综采工作面初采期顶板钻孔抽采效果差,容易造成瓦斯超限的问题,在1581(3)综采工作面初采期降低顶板钻孔层位、从切眼施工垂直钻孔、对工作面煤壁侧顶板实施预裂爆破,提高了顶板钻孔抽采瓦斯效果.应用结果表明:初采期顶板钻孔瓦斯抽采量随工作面瓦斯涌出量同步增大,瓦斯抽采率达68％以上,回风瓦斯浓度不超过0.3％.
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