ABSTRACT
Concrete aggregate production in dam construction is planned according to the distribution of good quality rocks estimated by preliminary surveys such as borehole exploration and geophysical survey. The accuracy in estimating the distribution of good quality rocks depends on the quantity of survey and is generally low. This may lead to a limited enhancement in the aggregate production efficiency. In addition, rock quality classification is based on the results of visual observation on blasted rocks distributed near the ground surface. Since it is impossible to inspect inside the ground, the accuracy in estimating the rock quality for the solid portion of the rock mass is therefore also limited. Furthermore, works related to drilling for blasting such as determination of the drilling positions and lengths are normally carried out manually. Under these conditions, a labor-saving means by mechanization has been desired. To resolve the problem, we developed a rock blasting management system, which consists of rational construction techniques with an Information and Communication Technology (ICT). In this report we will describe the summary of the system and the results of a verification experiment on the drilling survey and of a demonstration experiment at an aggregate production site.
