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Cemented Backfill In Two Italian Massive Orebodies
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Citation (Style = APA)
Congiu, M. (1992). Cemented Backfill In Two Italian Massive Orebodies. 11th International Conference on Ground Control in Mining Proceedings (ICGCM) 11th
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Congiu, M. (1992). Cemented Backfill In Two Italian Massive Orebodies. 11th International Conference on Ground Control in Mining Proceedings (ICGCM) 11th
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 13
Publication Date:
Jan 1, 1992
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Abstract
Abstract
| Mining of the massive complex sulphides orebodies of Campo Pisano and San Benedetto (Southern Sardinia, Italy), dates back to before Christ, though their exploitation with modern technology was only resumed in the middle of the last century. The increasingly adverse economic conditions and the weakness of both country rock and mineralization were concurrent in forcing the Company's management to develop suitable high-productivity stoping methods. In the framework of a project financed in part by the Commission of the European Communities, and carried out in cooperation with the Universities of Cagliari (Italy) and Clausthal (Germany), a cemented backfill stoping method was developed. The concrete mix preparation and placement facilities, study of the cement mixes and endeavors to optimize the methods are described. The monitoring system for measuring stress evolution within the emplaced backfill is illustrated together with the successful replacement of' part of the Portland cement with fly ash as binding agent in the mixes is discussed and a cost analysis provided. |
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