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用动光弹方法研究隧道岩爆的爆破扰动机理
引用本文:黄锋,徐则民.用动光弹方法研究隧道岩爆的爆破扰动机理[J].爆炸与冲击,2009,29(6):632-636.
作者姓名:黄锋  徐则民
作者单位:1.同济大学地下建筑与工程系岩土及地下工程教育部重点实验室,上海 200092;
基金项目:国家自然科学基金项目 
摘    要:利用动态光弹性方法,以Lamb模型为依据,研究了不同荷载形式下,模型内应力波的传播、相互作用规律以及刻槽的拦截效应。实验结果与弹性动力学解答基本一致:(1)倾斜冲击荷载作用下,模型内传播的有P波、S波和Rayleigh波,其中P波和Rayleigh波对岩爆有突出贡献;(2)等差条纹图的分布规律,可以合理解释岩爆高发区段与开挖面的位置关系;(3)模型表面的刻槽,可以实现对Rayleigh波的大量拦截,说明隧道表面切槽的岩爆控制方法理论上是可行的。

关 键 词:爆炸力学    爆破扰动机理    动光弹    岩爆    Lamb模型

On blasting perturbation mechanism of rock burst in tunnel by dynamic photo-elasticity
HUANG Feng,XU Ze-min.On blasting perturbation mechanism of rock burst in tunnel by dynamic photo-elasticity[J].Explosion and Shock Waves,2009,29(6):632-636.
Authors:HUANG Feng  XU Ze-min
Institution:1.Geotechnical Engineering Department, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;2.Department of Civil Engineering, Kunming University of science and technology, Kunming 650224, Yunnan, China
Abstract:The model was simulated by photo-elastic experiments according to the Lamb model,which included the propagation,interaction laws and interception effects of slot obstacle.The experimental results accord with the kinetics mostly:(1)There are P,S and Rayleigh waves under the action of oblique impact load.Only P and Rayleigh waves contribute to rock burst.(2)From the fringe patterns,the effects of inducing fracture and laws of propagation about pressure and Rayleigh are important factors for rock-burst mechani...
Keywords:mechanics of explosion  blasting perturbation mechanism  dynamic photo-elasticity  rock burst  Lamb model
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