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The Practice and Application of the Method of Drilling Negative Pressure in Determining the Radius of Gas Drainage
Pages: 11-12,25
Year: Issue:  3
Journal: Coal

Abstract: 对平沟煤矿0908综采工作面煤壁前方卸压带、集中应力带应力分布及变形情况的原因进行了认真的剖析,并利用钻孔负压法对钻孔的瓦斯抽放半径进行了测定,同时详细叙述了钻孔负压法测定瓦斯抽放所需设备和测定步骤,并通过现场测定确定了钻孔的瓦斯抽放半径,为卸压带瓦斯抽放钻孔间距的设计提供了合理依据,确保了工作面的安全生产.
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