BLASTING METHOD FOR UNDERWATER BASE ROCK, BY MAKING A LARGE DIAMETER HOLE USING A MECHANIZATION SYSTEM

摘要

PURPOSE: A blasting method for underwater base rock is provided to safely construct regardless of weather and water depth by making a large diameter hole using a mechanization system.;CONSTITUTION: A blasting method for underwater base rock is composed of next steps. A bottom part of a case for installing explosive and preventing soil inflow is installed near a rock(8) on the exact position of underwater at a drilling line(1). A drill rod(4) is inserted inside the casing by using a large diameter boring cutter(2). A blast object rock is punched to a requirement depth. The drill rod is completely eliminated from the casing. The explosive is installed in a punching unit through the casing inside. The explosive blasts the rock.;COPYRIGHT KIPO 2011