定向长钻孔预抽放技术研究

Directional drilling long pre-drainage technology

近年来,随着采矿技术的不断提高,以及矿井开采深度的不断延深,瓦斯含量逐渐增高,采用预抽放处理煤层瓦斯极为重要。该文主要介绍了定向长钻孔在煤矿中的应用,同时阐述了如何布置钻孔及封堵技术对预抽放的影响。

This paper introduces directional long hole in the coal mine.In recent years,with the mining technology continues to improve,and the continuous extension of the depth of mining depth,gas content increased gradually,using coal seam gas deal with want to drainage is extremely important,and it explains how to layout drilling and sealing technology For Drainage effects.