摘要
地震折射波法以其能够确定折射界面的速度而广泛用于工程地质勘察。但因其解释受地表条件及界面形态的影响而表现出多解性。本文以温福高速铁路某段测线内隧道工程地质探测为例,阐述了浅层地震折射波探测方法用于查明隧道的基岩埋深、围岩类别、断层位置等地质勘察任务所采用的举措,以提高其勘探精度。实际资料解释结果表明,基于长排列追逐时距t0差数法能较好地确定隧道围岩的速度。
The shallow refraction seismic is widely used in engineering geology exploration, because this method may ascertain the velocity of the refraction surface. However, its explaining result is represented ambiguity by the effect of the earth surface conditions and the conformations of interface. In this paper, we make an example of tunnel engineering geology exploration in some observation line of Wenfu high speed railway to expatiate some measures of shallow refraction seismic exploration in tunnel on the depth of rock, the type of rock, the position of fault and so on to improve the exploration precision. The explaining result of practice data indicate that the method of to based of long array chase is better to ascertain the rock velocity of tunnel.
出处
《工程地球物理学报》
2004年第5期452-456,共5页
Chinese Journal of Engineering Geophysics
关键词
浅层折射
隧道勘察
围岩类别
shallow refraction
tunnel exploration
the type of rock
