摘要
探地雷达法在隧道岩溶病害探测中具有重要作用,该方法具有探测效率高、对施工干扰小的优点,但在数据解译方面易出现分歧。对时域有限差分法正演模拟理论基础进行分析,并讨论该方法正演模拟基本参数的选取原则。采用GprMax软件对隧道底板不良岩溶地质模型进行正演模拟,通过对数值模拟结果进行分析,总结不同类型岩溶病害反射图像特征。结合某在建高速公路隧道岩溶探测实例,说明正演模拟指导探地雷达解译工作的有效性。
Ground penetrating radar plays an important role in detecting karst diseases in tunnels.This method has the advantages of high detection efficiency and little interference to construction,but it is prone to divergence in data interpretation.The theoretical basis of finite difference time domain forward simulation is analyzed and the selection principle of basic parameters of finite difference time domain forward simulation is discussed.GprMax software is used to forward simulate the unfavorable karst geological model of tunnel floor,and the reflection image characteristics of different karst diseases are summarized by analyzing the numerical simulation results.Combined with a karst detection example of an expressway tunnel under construction,the effectiveness of forward modeling in guiding ground penetrating radar interpretation is illustrated.
作者
钟安然
王应伟
陈海涛
ZHONG Anran;WANG Yingwei;CHEN Haitao(Zhaotong Traffic Construction Engineering Quality and Safety Supervision Bureau,Zhaotong,Yunnan 657000,China;Zhaotong Yizhao Expressway Project Headquarters,Zhaotong,Yunnan 657000,China;China Railway Bridge Science Research Institute Co.,Ltd.,Wuhan,Hubei 430034,China)
出处
《施工技术（中英文）》
CAS
2022年第3期18-23,共6页
Construction Technology
基金
国家自然科学基金(51739008)。
关键词
公路
隧道
探地雷达
时域有限差分
正演模拟
岩溶探测
highway
tunnels
ground penetrating radar
finite difference time domain
forward modeling
karst detection
