摘要
为研究浅层地震映像法探测垂直裂隙,基于垂直裂缝反射波运动数学模型进行了数值模拟和超声波物理模拟,并对某高速公路层用浅层地震映像法进行了检测。对理论与实测结果分析表明:必须采用偏移距不为0的等偏移距映像法才能得到垂直裂缝的反射,否则难以对垂直裂缝进行有效检测;不管激发和接收点处于什么位置,水平界面上的反射点均与激发和接收点同侧、距垂直裂隙1/2偏移距处。
In order to detect vertical fracture of subsurface by seismic imagine, the mathematical model with numerical simulating and physical ultrasonic simulating is developed. The result shows that the seismic imagine is an effective testing method only when the offset is not equals to zero. The reflect point of layer is always on the same side with shot point and received point, and the space from the reflect point to the interface projective point of vertical fracture is a half of offset in spite of shot point and received point locations. 7 figs, 10 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第1期31-34,共4页
Journal of Chang’an University(Natural Science Edition)
关键词
道路工程
地震映像
公路垂直裂缝
数值模拟
物理模拟
road engineering
seismic imagine
highway vertical fracture
numerical simulating
physical simulating
