论文部分内容阅读
余吾煤业主采的3#煤层为松软煤层,普通钻机在打钻过程中钻进深度短、抽采纯量低而且经常发生塌孔、掉钻现象,为此余吾煤业引进了澳大利亚威利朗沃公司生产的VLD-1000型千米定向钻机对本煤层进行采前预抽和掘前预抽。通过对千米钻机在S1206进风顺槽长距离煤孔的施工情况和抽采效果分析,总结了千米钻机的技术优点及改进措施,为解决余吾煤业的松软煤层瓦斯治理难题提供了一种节约高效的方法。
The coal seam of No. 3 seam taken by the owner of Yuwu coal is a soft coal seam. Ordinary drilling rigs have a short depth of drilling during drilling, low scavenging capacity and frequent holes collapse and drill-off. Therefore, The company’s VLD-1000-type directional drilling rig to the coal seam before the pre-pumping and digging before pumping. Through the analysis on the construction situation and pumping effect of the long distance coal hole of the drilling rig in S1206, this paper summarizes the technical merits and improvement measures of the kilometer drilling rig and provides a solution to the problem of methane treatment in the soft coal seam in Yuwu Coal Industry A cost-effective way.