DIN 21500:2017-05

Mining shafts are used for the vertical transportation of people, materials and machines between the surface and the extraction or working level in the rock to great depths. The inner surface of the shaft is lined with suitable structures - the shaft lining - in order to maintain the shaft cavity and to provide permanent protection against the effects of the sunk, often unstable and usually water-bearing rock. This standard regulates the design, calculation, execution and testing of the shaft lining. It is the basis for the planning, activities of the testing and inspection bodies and also contains the necessary requirements for the initial data and conditions to be provided by the client. This standard is based on the "Guidelines for the calculation of shaft linings in unstable rock", the decades of experience of experts and their publications on the design, calculation, execution and testing of numerous shaft linings of various types and designs. Numerous shaft structures in mining and tunnel construction have been designed, dimensioned and built on the basis of the "Guidelines". In contrast to the global-deterministic design concept of the "Guidelines", this standard uses the semi-probabilistic reliability theory with partial safety factors. The focus is on mining and shaft construction-specific influences and conditions. Justifiable deviations from the European construction standards are derived from the "Guidelines" and the experience of shaft construction. This standard has been prepared by Working Committee NA 005-51-10 AA "Schachtbau" ("Shaft sinking") at DIN Standards Committee Building and Civil Engineering (NABau).