已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Experimental Study on GPR Detection of Voids inside and behind Tunnel Linings

探地雷达 空隙(复合材料) 地质学 岩土工程 推力 雷达 材料科学 复合材料 工程类 电信 航空航天工程
作者
Hui Qin,Xiongyao Xie,Yu Tang,Zhengzheng Wang
出处
期刊:Journal of Environmental and Engineering Geophysics [Environmental and Engineering Geophysical Society]
卷期号:25 (1): 65-74 被引量:27
标识
DOI:10.2113/jeeg18-085
摘要

Ground penetrating radar (GPR) is considered an effective tool to detect tunnel lining voids. In this paper, an experimental study was carried out using a physical tunnel lining model to evaluate the performances of different antenna frequencies. We built a 4.2 m–long, 4.2 m–wide, and 2.0 m–high experimental model to simulate the secondary lining, initial lining, and surrounding rock of a tunnel structure. In the model, we created four categories of voids, which are voids in secondary and initial linings, a delamination between the secondary and initial linings, a delamination between the initial lining and sand, and a void buried in the sand, to simulate real cases in tunnel engineering. The GPR wave velocities in the sand and concrete of the model were measured using the reflection method for the calibration of void depth. We employed a commercial GPR system equipped with antennae of different centre frequencies to detect the voids. GPR data were processed using a conventional data processing flow, and the performances of different frequencies were examined. The results show that the 1000 MHz centre frequency GPR is capable of characterizing shallow buried voids in the secondary lining but is not able to penetrate into the initial lining. The 250 MHz centre frequency GPR system is not advised to detect voids in or behind tunnel linings due to its low resolving power for voids of centimetre sizes. The 500 MHz centre frequency GPR system is optimal for void detection because it demonstrated a balanced performance of resolving ability and investigation depth. The findings of this work could be useful references for antenna selection and data processing in real GPR applications.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
NexusExplorer应助hsr_eye采纳,获得10
2秒前
bkagyin应助现代的半兰采纳,获得10
3秒前
漂亮白枫发布了新的文献求助10
5秒前
小蘑菇应助哈哈哈哈采纳,获得10
7秒前
8秒前
量子星尘发布了新的文献求助10
10秒前
bkagyin应助漂亮白枫采纳,获得10
11秒前
硕小牛完成签到,获得积分10
12秒前
猪猪hero应助LLY采纳,获得10
12秒前
Jay发布了新的文献求助10
13秒前
15秒前
18秒前
彼岸花开发布了新的文献求助10
18秒前
Nakacoke77完成签到,获得积分10
18秒前
轻松尔蝶完成签到 ,获得积分10
20秒前
科研通AI5应助Jay采纳,获得10
26秒前
丘比特应助Jay采纳,获得10
26秒前
yx_cheng应助Jay采纳,获得10
26秒前
29秒前
哈哈哈哈发布了新的文献求助10
33秒前
人间草木完成签到,获得积分10
42秒前
RHJ完成签到 ,获得积分10
48秒前
Skye完成签到 ,获得积分10
53秒前
56秒前
陶瓷小罐完成签到 ,获得积分10
58秒前
狂野的含烟完成签到 ,获得积分10
58秒前
nature发布了新的文献求助10
59秒前
Mingchun完成签到 ,获得积分10
1分钟前
ele_yuki完成签到,获得积分10
1分钟前
1分钟前
烟花应助柠栀采纳,获得10
1分钟前
在水一方应助三水采纳,获得10
1分钟前
木槿完成签到,获得积分10
1分钟前
郭娅楠完成签到 ,获得积分10
1分钟前
yuyuyu发布了新的文献求助10
1分钟前
半城微凉应助科研通管家采纳,获得10
1分钟前
852应助科研通管家采纳,获得10
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
李爱国应助科研通管家采纳,获得10
1分钟前
科研通AI5应助科研通管家采纳,获得10
1分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976600
求助须知:如何正确求助?哪些是违规求助? 3520674
关于积分的说明 11204470
捐赠科研通 3257316
什么是DOI,文献DOI怎么找? 1798683
邀请新用户注册赠送积分活动 877861
科研通“疑难数据库(出版商)”最低求助积分说明 806595