电子雷管在光面爆破中的应用

针对光面爆破后的边坡光滑稳定及爆破后石料破碎块度均匀的要求,以温州绕城高速公路路堑开挖爆破工程为背景,对比测试了电子雷管和导爆管雷管的延时精度,并进行了电子雷管并联起爆网络和导爆管雷管复式起爆网络的光面爆破试验,比较2种雷管爆破后的石料块度,研究了电子雷管在光面爆破及石料块度控制方面的应用。试验结果表明:电子雷管延期时间的标准差、极差和延时误差均比导爆管雷管小,延期性能优于导爆管雷管。采用电子雷管进行光面爆破,爆破后的边坡表面平整,光爆孔清晰,效果好,且爆破得到的石料块度大部分集中在10～450 mm,块度均匀,能较好地满足工程需求。

Application of Electronic Detonator to the Smooth Blasting

In order to obtain smooth and stable slopes and uniform fragmentation of rock after smooth blasting， the delay accuracy of electronic detonators and nonel detonators were compared and tested， on the background of the cutting excavation blasting project of Wenzhou Ring Expressway. Smooth blasting tests on parallel initiation network of electronic detonators and compound initiation network of nonel detonators were also carried out. The rock fragmentations after blasting with two kinds of detonators were contrasted， and the application of electronic detonator in smooth blasting and the fragmentation control was studied. The test results showed that the standard deviation， the range deviation and the error of delay time of electronic detonator are smaller than those of nonel detonator， but its delay performance is better than that of nonel detonator. After smooth blasting by electronic detonator， the slope surface is smooth with clear blasting hole. The rock mass obtained by blasting mostly concentrate in 10~450 mm with uniform fragmentation， which can better meet the needs of the project.