Brief Analysis on the Cause of Steel Shaft Lining Instability and the Prevention

Abstract:

Vertical shafts with short production life, small hole depth and diameter, which are constructed by drilling method with permanent steel lining sometimes, compared with reinforced concrete shaft lining, steel shaft lining easily causes buckling deformation even the shaft damage. With field cases, the paper analyzed the critical buckling stresses and influencing factors under the instability of steel shaft lining, and put forward the corresponding preventive measures.

Key words:drilling method; steel shaft lining; instability; prevention