Abstract
Blasting has the possibility of creating a soil area for greening the rock desert because blasting with ANFO (Ammonium Nitrate and Fuel Oil) could make rock into soil level particles (less than 2mm) and diffuse unreacted ammonium nitrate into particles as nourishment for plants. We conducted lab-scale experiments with 30 cm cubic model of rock and field experiments on the quarry to investigate relationships between blasting conditions and performances of the fragmentation of rock into soil level particles and the diffusion of nutritional ions. As results of lab-scale experiments, it was investigated that the fragmentation performance and diffusion of nutritional ions be controlled by loading conditions and that amount of ions change with the solidity of rocks because of the changes of detonation velocity. And as results of field experiment, two aspects were indicated. One was that we must suppose the new blasting method to remain sufficient amount of particles in the crater because most fragments spread around the crater. The other was that the particles after blasting contained various nutritional ions with the ANFO, added with the fertilizer.
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