Shotcreting technology in coal mining -- Development, practice, and field experience
- DMT Gesellschaft fuer Forschung und Pruefung mbH, Essen (Germany)
Over the past years a large number of pit bottoms, underground crossings of main roads, and roadways headed in rock has been substantially stabilized by shotcreting, generally combined with strata bolting techniques. In contrast to conventional tunnelling practice, mining requires consideration to be given to substantially higher strata pressures and temperatures. The latter have considerable influence on the material-specific properties of shotcrete. The shotcrete blends in mining are different in terms of approved aggregates and additives. The handling techniques and the selected shotcreting technique, in turn, control the strength-mechanical properties in dry shotcreting as well as in wet shotcreting. The development of novel hydraulically setting mortars with consideration of environmental aspects is not completed yet.
- OSTI ID:
- 483887
- Report Number(s):
- CONF-9506349-; TRN: IM9726%%280
- Resource Relation:
- Conference: 7. conference on shotcrete for underground support, Telfs (Austria), 11-15 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Shotcrete for underground support 7: Proceedings; Klapperich, H. [ed.] [DMT, Essen (Germany)]; Poettler, R. [ed.] [Kling Consult, Krumbach (Germany)]; Willocq, J. [ed.] [Lafarge Fondu International, Paris (France)]; PB: 325 p.
- Country of Publication:
- United States
- Language:
- English
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