Application of New Smooth Blasting Technology in Slope Excavation
In order to address problems of high cost,high noise and low efficiency of traditional smooth blasting technology,a new charging structure without a detonating cord was proposed,and the parameters were determined according to the requirements of smooth blasting.Tests on smooth blasting without a detonating cord were carried out for blastholes with non-coupling coefficients of 3.8,3.9 and 4.0,respectively.Based on the analysis of the half-hole rate after smooth blasting,the smooth blasting effects of blastholes corresponding to three non-coupling coefficients were analyzed based on comparison.The results show that each blasthole for smooth blasting can be successfully initiated by using a charging structure without a detonating cord,and the half-hole rates of blastholes are 78.40%,89.60%and 57.60%respectively corresponding to those three non-coupling coefficients.It is concluded that an optimal non-coupling coefficient of this new smooth blasting technology in the test is 3.9.
slope excavationsmooth blastingcharging structureblasting parametersblasting without a detonating cordnon-coupling coefficientblasting effecthalf-hole rate
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维普
