Abstract

Tubing lining is used as the final lining of shafts sunk in extreme hydrogeological conditions, and it is composed of a cylinder made of separate rings. Individual rings are composed of separate, equal segments called tubings. Tubings can be made of reinforced concrete, cast iron and steel. Steel tubings, having dimensions depending on the shaft diameter, have the form of a metal pipe [1-4]. Despite of high durability of the tubing lining, damages of the lining in form of leakages, scratches and fractures can occur. The most common causes of these damages are material faults and hydro-geological conditions [4-9]. The damages of the tubing lining are direct danger for the shaft operation because they are usually a cause for a water inflow to the shaft. The safety of mining excavations is considered dangerous, because the devastation of the lining usually comprises a bigger zone, and the possibility of more intensive water leakage related with rock mass movements is quite realistic [5,7,10]. Different methods of tubing lining repair and protection were invented and used over the years. All of them comprise of some kind of the reinforcement of the damage to seal the tubing lining.