1,721,014 research outputs found
Stato di fratturazione e cicli di produzione in una cava di peperino ornamentale: rilevamenti e valutazione delle rese e delle produttività
No full textPrevisione del rendimento in blocchi tramite la simulazione su computer della coltivazione e dello stato di fratturazione in cave di roccia ornamentale
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Progettazione e gestione tecnica di una cava di rocce ornamentali mediante un software interattivo
No full textTest of different production plans and production scheduling in a rock salt deposit
No full textThe problem of different production strategies has been studied in relation to reserves selection and a computer program for ore production management has been developed. The case study presented concerns a rock salt mine in Sicily with different production lines and variable ore characteristics. A geostatistical block modeling of the deposit was constructed on the basis of the physical and chemical parameters that ultimately determine the type of end-product. Mining operations according to different selection strategies were simulated using the model and taking into account of both technical and commercial constraints. The structure of an ore production managing programme running on a PC to select both the mining unit and the end-use of the ore is described
Reconstruction of rainfall fields by combining ground raingauges data with radar maps using external drift method
No full textThe described application involves the use of external drift method to calibrate radar raingauges when estimating rainfall fields. The estimates of rainfall fields for times of half-hour or one-hour intervals and with a high spatial resolution are needed as on-line inputs for hydrological simulations aimed at predicting flood flows. Cross-validation results indicate that precision can be improved by integrating the data from radar raingauges with those from ground gauges, but that the improvement occurs only when there is a high correlation between the two sets of data. Estimating quality is equal to that provided by cokriging, with the difference that the latter method is too laborious for on-line applications
Stato di fratturazione e di qualità nelle rocce calcaree ornamentali stratificate: modello di rappresentazione e previsione della resa in blocchi
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