小净距隧道爆破振动对邻近隧道影响测试研究  

Experimental Study on Blasting Vibration Influence on nearby Tunnels with Small Interval

作　　者：陈连进[1,2] 

机构地区：[1]中国地质大学(武汉),武汉430074 [2]岩土钻掘与防护教育部工程研究中心,武汉430074

出　　处：《爆破》2010年第2期36-40,共5页Blasting

基　　金：国家自然科学基金(50778107);福建省自然科学基金(2006J0445)

摘　　要：为研究小净距隧道爆破对工作面前后中间岩柱的影响规律,结合泉厦高速公路扩建工程大坪山隧道振动监测,对小净距隧道中间岩柱的振动响应及累积损伤进行测试研究,得出爆破地震波在小净距隧道中间岩柱衰减公式及V-ρ曲线,分析了距离掌子面不同位置爆破地震波特性规律。结果可为类似条件下小净距隧道的现场监测、爆破控制和建立动荷载作用下隧道破坏临界值提供依据。For researching the influence law of the blasting vibration on the rock pillars around the working faces in tunnel with small interval, the vibration response and accumulative damage of the rock pillars between the tunnels with small interval were researched combining with the monitoring of vibration in expansion project of Dapingshan tunnel that is part of Quanzhou-Xiamen highway ,then the attenuation formula of blasting vibration and V-p correlation curve through the rock pillars were obtained. Afterwards, the laws of blasting seismic waves at different positions from the working space were also analyzed. The results can be referred to for the field monitoring,blasting control and dynamic load damage threshold in similar conditions.

关 键 词：小净距隧道 爆破振动 累积损伤 质点振动速度 

分 类 号：TD235.14[矿业工程—矿井建设]