The Classification and Quality Evaluation of Rock-Mass Based on Limited Geological Information

Abstract:

This paper takes the No. 1 ore body of Jinchuan 3rd mining area as an example, obtains the corresponding relation of surrounding rock quality evaluation index and spatial location.Through RMR rock classification method , using Rockware modeling system and limited geological informations, the statistical analysis of RMR and RQD showed that the rock of No. 1 ore body belongs to III~V type. Its rock mass is between normal to unstable. Through Rockware modeling system, we established the 3D rock properties model of UCS, RQD and RMR, and found that in the 5 to 6 rows of east hanging wall exists rock not conducive to the block caving method which belongs to the type of V. Finally, Statistical analysis was made based on the numerical model of strata. We find that , basically ,the rock block has good cavability because it belongs to the IV type of rock masses. However when design blocks and manage drawing, we must pay particular attention to the III type of rock, which is of moderate stability, and the V type of rock, which is less stable. All of these make a useful exploration for the research of key technology in the field of the interior of the earth.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 870-874
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.870
• Online since: July 2014
• Authors: Xiao Guang Wu, Zhi Qiang Yang, Qian Gao*, Duo Heng Ba
• Keywords: 3rd Mining Area of Jinchuan, Geological Evaluation, RMR, Rock Masses Classification

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