DEVELOPMENT OF GROUTING MANAGEMENT SUPPORT SYSTEM AND ITS APPLICATION TO ACTUAL DAM GROUTING

Abstract

 According to the technical guide for grouting method for dam construction in Japan modified in the year 2003, one of the key issues for grouting is quality assurance and effectiveness by minimizing the amount of injected grout. Hence, the grouting management support system was newly developed by combining joint density diagram and geostatistical simulations. In this system, the joint density diagram was used to determine most effective direction for the grout injection boreholes and the hydraulic conductivity fields before/after grout injection were estimated by geostatistical simulations. In this paper, the newly developed system was introduced and applied to the actual dam construction site.