Proposed method to determine the center and axis of mine shaft for monitoring deformation and geometric parameter inside the shaft

Abstract

The deformation controlling measurement and direction alignment for mine shaft during its construction and operation is mainly based on shaft centre and axes. In this article, the author presented and proposed the method of determining the shaft centre and axis during the proccess of its sinking and operation for shaft deformation monitoring and shaft geometry controlling, which can be applied to the quite deep shafts that have been constructed or are being constructed like in Ha Lam, Nui Beo, Khe Cham coal mines.