摘要
[目的]地铁隧道管片及土体内部注浆体分布的可探测性是一个非常复杂的问题,需要考虑多种因素,如注浆材料的物理性质。不同的注浆材料有不同的物理性质,比如密度、声速、吸湿性等。这些性质可以影响注浆体对声波、电磁波等的响应。因此,基于注浆材料的物理性质研究地铁隧道注浆体分布情况的可探测性。[方法]探测方法的选择是至关重要的因素,不同的探测方法对不同的注浆材料、管片材料和土体材料有不同的响应。介绍了国内外在注浆体探测方法方面的研究现状;介绍了注浆检测原理、构想和初步试验方法,详述了3种基于超声波和雷达波检测的试验内容及试验结果。[结果及结论]雷达波在环氧树脂灌浆体及混凝土两种介质中能较好地进行传播,在两者界面能量会一定程度被反射。用探地雷达对管片等混凝土结构后面的环氧树脂灌浆体进行检测是可行的。
[Objective]The detectability of grouting distribution within metro tunnel segments and surrounding soil is a highly complex issue that requires consideration of various factors,such as the physical properties of grouting materials.Different grouting materials possess distinct physical properties,such as density,sound velocity,hygroscopicity.These properties can influence the response of the grout to acoustic waves,electromagnetic waves,and other signals.Therefore,the detectability of grouting distribution in metro tunnels based on the physical properties of grouting materials.[Method]The selection of detection methods is a critical factor,as different methods respond differently to various grouting materials,segment materials,and soil materials.The current research status of grouting detection methods both domestically and internationally is introduced.The principles,concepts,and preliminary experimental methods for grouting detection are presented in detail,including three types of tests based on ultrasonic and radar wave detection,along with their respective test procedures and results.[Result&Conclusion]Radar waves can propagate effectively in both epoxy resin grouting and concrete media,with partial energy reflection occurring at the interface between the two.It is feasible to use ground-penetrating radar to detect epoxy resin grouting located behind concrete structures such as tunnel segments.
作者
辛旭
丁志勇
刘伍
张汝峰
蒋炜
沈杰
周峥
李仑
严楚琴
盛伟俊
XIN Xu;DING Zhiyong;LIU Wu;ZHANG Rufeng;JIANG Wei;SHEN Jie;ZHOU Zheng;LI Lun;YAN Chuqin;SHENG Weijun(Track Works Branch of Shanghai Metro Maintenance Support Co.,Ltd.,200233,Shanghai,China;SGIDI Engineering Consulting Group Co.,Ltd.,200093,Shanghai,China;Shanghai Tunnel Engineering Waterproof Material Co.,Ltd.,200031,Shanghai,China)
出处
《城市轨道交通研究》
北大核心
2025年第S1期96-104,共9页
Urban Mass Transit
关键词
地铁隧道
注浆体
探测方法
超声波
雷达波
metro tunnel
grouting body
detection method
ultrasonic wave
radar wave
