標準號：IS 6955-1973
發布日期：1973/10/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard gives guidance on the type, extent and details of subsurface explorations needed in connection with earth and rockfill dams. It is not possible to lay down the required extent of exploration to cover all types of cases. The standard provides guidelines for planning the exploratory work through various stages of the project development. These recommendations may have to be modified for individual projects depending upon the site conditions and other conditions peculiar to each project such as height and importance of the dam and the heterogeneity of foundation formations.1.2 The term subsurface exploration as used herein covers all types of exploration connected with determination of the nature and extent of soil and/or rock below the natural ground surface at/or near the dam site.1.3 This code does not however cover the types and methods of exploration for materials of construction for earth and rockfill dams such as soil and rock and material for riprap protection. These will be covered by a separate code on subsurface exploration for construction materials.