由于淮北矿业集团芦岭矿地质构造复杂,煤层松软,导致在抽采钻孔钻进过程中钻孔易坍塌、排渣效果不理想、抽采率低等一系列问题。大通径三棱螺旋钻杆是在传统三棱钻杆的基础上增加了螺旋条带,螺旋条带可以形成足够大的流体排渣通道,具有实施流体与机械协同排渣功能,其排渣效果更好,钻进效率更高。 Due to the complex geological structure of Luling Mine in Huaibei Mining Group and the loose coal seam, a series of problems such as easy collapse of borehole during drilling and drilling, unsatisfactory slagging effect and low pumping rate are caused. Large diameter three-sided spiral drill pipe is based on the traditional triangular drill pipe added helical strip, helical strip can form a large enough fluid slag passage, with the implementation of fluid and mechanical slag discharge function, the slag effect Better, more efficient drilling.