Caracterização do maciço rochoso com o uso de testemunhos de sondagem na mina Ipueira 3, Andorinha-Bahia.

Abstract

The present study was accomplished at the mine Ipueira 3, located in the municipal district of Andorinha, in the North-northeast portion of the State of Bahia. Where the mineralization of chrome happens in a sill mafic-ultramafie intensely failed. Due to the structural complexity of the deposit the detailing of the research was accomplished through the sampling of a great amount of survey holes executed starting from research galleries in the level (N-345). Para characterization geomechanical of that solid one, where two production levels will be developed, 35 holes were analyzed disposed in 12 sections longitudinal South-north and in profile West-east, totaling in approximately 2.900 m of testimonies. The testimonies were measured and analyzed for determination of RQb and of the recovery REC. They were selected and rehearsed samples of the main litologies (serpentina-olivina-ortopiroxenio, cromitito, serpentina-ortopiroxenio-olivina and gabro) for determination of the resistance to the compression uniaxial and triaxial. The data were typed in spreadsheets electronics for calculation of RQD, recovery REC and statistical distributions for RQD of each litologia. Also data were generated containing RQD, hole size and you coordinate, to export for the perfilagem software Downhole Explorer (DHE). Allowing to visualize graphs with variation of RQD along the holes, profiles of the sections and stratigraphical columns. Therefore, this work emphasizes the usefulness of available data starting from survey testimonies (he/she researches) for characterization of those solid ones and the integration of auxiliary software that will be enhanced in the conclusion of this work.