摘要
针对某城市浅埋深隧道爆破开挖环境较复杂的实际情况,为确保隧道上方变电站的绝对安全,基于干扰降震的机理,根据实测爆破震动波,并结合现场实际情况,确定合理的微差起爆时间,利用高精度数码雷管对爆破振动效应进行控制。实际监测表明,爆破震动质点振速峰值小于0.3cm/s,满足了规定的要求。
In light of the complex environment of blasting excavation of shallow buried tunnel in a city,ln order to secure absolute safety of the transformer substation above the tunnel engineering, based on the mechanism of reducing vibration by wave interference and the measured data of blasting vibration, combined with the actual field conditions, reasonable millisecond delay intervals were determined. A high precision digital detonator was used to control the effect of blasting vibration. The actual monitoring of blasting vibration showed that the peak particle velocity was lower than 0.3 cm/s, meeting the specified requirement.
出处
《矿业研究与开发》
CAS
北大核心
2012年第4期105-107,共3页
Mining Research and Development
关键词
浅埋隧道
爆破震动
微差爆破
干扰降震
Shallow buried tunnel
Blasting vibration
Millisecond blasting
Reducing vibration by wave interference
