Identification, investigation and analysis of end-of-wind protection devices for vertical and incline shafts.

Abstract

The occurrence and cause of overwind and underwind events in underground mining were investigated in conjunction with devices, which are at present being applied to prevent and control such incidents. Proposals for in-shaft systems to protect personnel from excessive deceleration forces and subsequent injury or death in the event of underwind/overwind are discussed. The conclusion of the technology study is that a mechanical safety device is necessary to support current systems. It was decided to concentrate on vertical shafts as these pose the bigger problem. However the solution has to be applicable for incline and vertical shafts.