The utility model discloses a wear underground structure in water bearing sand into the hole drilling drilling on the ground for a through hole is formed in the underground structure, including at least one drill pipe and drill; also includes a tapered running, the conical grinding piece is fixedly arranged on the drill rod and the the drill bit between the conical parts running in the small end connected with the drill bit. Because the utility model adopts a conical grinding special design, using the tapered parts and through holes in the wall extrusion running, through holes of the inner wall and the outer surface of the conical grinding pieces tightly, thereby greatly improving waterproof effect of hole method into wear of underground structures in water bearing sand drilling on the ground.
【技术实现步骤摘要】
【技术保护点】
1.一种在地面钻穿含水砂层中地下结构的成孔专用钻件,用于在所述地下结构上形成一透孔,包括至少一钻杆,及钻头;其特征在于:还包括一锥形磨合件,所述锥形磨合件固定设置在所述钻杆与所述钻头之间,所述锥形磨合件的小端与所述钻头连接。
【技术特征摘要】
【专利技术属性】
技术研发人员:曹化春,张景钰,秦一雄,周骏,郝雷,高菁菁,
申请(专利权)人:中煤矿山建设集团有限责任公司,
类型:实用新型
国别省市:34
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。