采用高精度雷管的微差爆破实践

简单介绍了微差爆破的原理,阐述了高精度雷管的性能,并与普通雷管进行了延期时间与误差比较。在兰尖铁矿用高精度雷管进行了孔内孔间微差爆破试验,爆破震动测试数据表明,在露天矿采场生产爆破中,使用高精度雷管进行孔内孔间微差爆破,能取得好的降震效果和爆破质量。

Practice of Millisecond Delay Blasting with High-precision Detonator

The theory of millisecond delay blasting is introduced briefly.The performances of high-precision detonator are expatiated,and it is compared with common detonator in delay time and errors of delay time.An experimental study on millisecond delay blasting both in-and-among holes was carried out in Lanjian Iron Mine. The data from blasting vibration test indicate that better effect of vibration reduction and high quality of blasting can achieved when millisecond delay blasting both in-and-among holes by high-precision detonator in production blasting of open-cast mine.