摘要
Abstract
Smooth blasting, one method of the controlled blasting, is an advanced blasting technology in the shaft and dritt excavation, and is intended to have regular surrounding rock which meets the design requirements and owns even surface, small damage and good stability 'after the blasting. It is limited to oue layer of the rock surrounding the cross section ( mainly the top and two sides), and is 'also called contour blasting or perimeter blasting. It has such merits as over - break reduetiun, good forming, good stability of surrounding rock, the improvement of the drilt construction progress, cost reduction of workings supporting, and etc.关键词
光爆/管理/岩巷/快速/掘进Key words
smooth blasting management stone drift speediness and tunneling分类
矿业与冶金
