Design and Construction Technology of Batching Hole in Tongfa Dongzhouyao Coal Mine

The batching hole is a shortcut channel that conveys solid material from ground to underground. It can solve the problem of auxiliary transportation during mine construction and production, shorten construction period and reduce cost. The design and construction technology of batching hole in Tongfa Dongzhouyao Coal Mine was studied. The causes of drilling accident were analyzed. In the process of drilling deviation controlling, casing pipe and well cementing, every section was strictly controlled. The result indicates that the project quality achieves the requirement.