顶板千米定向钻孔在寺河煤矿二号井中的应用

Roof Kilometer Directional Drilling Application of the No.2 Shaft in Sihe Coal Mine

结合ZDY6000LD型井下千米定向钻机的特性,在回采工作面同时施工顶板走向高位钻孔和顶板千米定向钻孔,在回采过程中对比两种钻孔瓦斯治理效果表明,顶板千米定向钻孔与顶板高位钻孔具有相同的抽采效果,但顶板千米定向钻孔具有施工钻场数量少、钻机移动次数少和钻孔工程量少的优点。

Combination with the characteristics of type ZDY6000 LD kilometer underground directional drilling construction at the same time in the working face roof toward the high kilometer directional drilling,drilling,and roof compared two kinds of drilling gas control in the process of extraction effect showed that the roof kilometer high borehole directional drilling and roof with the same extraction effect,but the roof km directional drilling has fewer and less drill mobile construction field,drilling the advantages of less of quantities.