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A Study on the Characteristics of Rock Mass by GSI in Limestone Mine  

Kaynnam U. M. Rao (한국지질자원연구원 지반안전연구부)
Publication Information
Tunnel and Underground Space / v.14, no.2, 2004 , pp. 86-96 More about this Journal
Abstract
Rock mass classification methods such as RMR, Q system and GSl have been widely adopted with certain modifications for the design of mine openings. The GSI system is the only rock mass classification system that is related to Mohr-Coulomb and Hoek-Brown strength parameters and gives a simple method to calculate the engineering properties of rock masses which can be useful input parameters for a numerical analysis. A detailed surveying for GSI mapping as well as far calculating RMR values was undertaken at Daesung and Pyunghae underground limestone mining sites. RQD values were determined for row locations in these two mining sites. Based on GSI values and intact rock strength properties, the rock mass strength modulus of elasticity as well as the Mohr-Coulomb strength parameter c$_{m}$ and $\phi$$_{m}$ were determined. GSI and RMR are correlated.
Keywords
Rock mass classification GSI; RMR; Q; Rock; mass strength and deformation modulus; Modulus ratio;
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Times Cited By KSCI : 1  (Citation Analysis)
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