제주 현무암 지반의 변형계수 추정

Abstract

As civil engineering and construction works are actively in progress in Jeju recently, proper estimation of the deformation modulus on basalt for analyzing the reliability of structures is regarded critical. However, geotechnical assessment is still insufficient. Deformation Modulous is currently measured through field test which requires a great deal of time and cost. Many of domestic and international empirical formula are introduced through the case study in order to resolve this issue. However, it is struggling to estimate proper deformation modulus for intensity of bedrock and deformation characteristics. Therefore, correlationship on the estimation of deformation modulus at basalt area in Jeju is analyzed by utilizing experimental value at the site and RMR classification value. Comparing to correlationship of 5 other different types of rock referencing advanced research, it is observed that basalt has an equal correlationship with gneiss, lower than granite gneiss and andesite while it has higher correlationship than granite and tuff. By analyzing characteristic values of basalt rock and RMR classification, prediction equation has been calculated. However, correlationship was barely found and application seems to be inappropriate. Additional research is needed by undertaking extensive analysis which reflects characteristics of the rock.