运营铁路隧道衬砌背后较大空洞的精确检测技术

doi:10.3973/j.issn.1672-741X.2016.12.015

隧道建设（中英文） ›› 2016, Vol. 36 ›› Issue (12): 1507-1511.DOI: 10.3973/j.issn.1672-741X.2016.12.015

运营铁路隧道衬砌背后较大空洞的精确检测技术

龚伦¹，仇文革¹，王立川^1,2，王希元¹

(1. 西南交通大学土木工程学院交通隧道工程教育部重点实验室，四川成都 610031；2. 成都铁路局，四川成都 610082)

收稿日期:2016-09-02 修回日期:2016-11-01 出版日期:2016-12-20 发布日期:2016-12-30
作者简介:龚伦(1974—)，男，重庆长寿人，2008年毕业于西南交通大学，桥梁与隧道工程专业，博士，副教授，现主要从事隧道及地下工程近接施工影响及对策研究、既有隧道病害检测及整治技术研究工作。Email: gonglun33@126.com。
基金资助:
国家自然科学基金资助项目(51178399， 51478392)

Accurate Detection Technologies for Larger Hollows Behind Linings of Operating Railway Tunnel

GONG Lun¹, QIU Wenge¹, WANG Lichuan^{1, 2}, WANG Xiyuan^1

(1. Key Laboratory of Transportation Tunnel Engineering of Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. Chengdu Railway Bureau, Chengdu 610082, Sichuan, China)

Received:2016-09-02 Revised:2016-11-01 Online:2016-12-20 Published:2016-12-30

摘要/Abstract

摘要：

目前采用地质雷达等无损检测技术可快速、准确检测衬砌厚度和衬砌中钢筋数量等参数，并可有效判识衬砌背后空洞等缺陷沿隧道纵向和环向长度，但对这类缺陷的径向尺度因介电常数的差异、反射面的识别等原因而无法准确判识。依托西南地区某运营铁路隧道衬砌背后存在较大空洞的工程实际，结合现场钻孔调查和地质雷达无损检测，首次运用钻孔三维激光扫描技术对运营铁路隧道衬砌背后空洞进行扫描，实现精确检测，得到衬砌背后空洞的三维形态和具体尺寸，检测成果可为隧道病害整治提供准确的数据，可设计出更具针对性和操作性的整治方案。提出的“物探+钻孔三维激光扫描”技术，能实现衬砌背后空洞“粗中有细”的全面检测。

关键词: 运营铁路隧道, 衬砌背后空洞, 钻孔三维激光扫描, 三维形态, 精确检测

Abstract:

The parameters, i.e. lining thickness and reinforced rebar of lining, and the longitudinal and circumferential length of hollow behind lining can be detected rapidly and accurately by nondestructive ground penetrating radar detection technology nowadays. However, the radial dimension of the hollow behind lining can not be clearly identified due to the difference of dielectric constant and recognition of reflecting surface. The technology of threedimensional laser scanning in borehole is adopted to detect the hollow behind lining of an operating railway tunnel in Southwest China for the first time. The threedimensional shape and sizes of the hollow are obtained based on borehole drilling method and ground penetrating radar. The detection results can provide accurate data for tunnel disease treatment and reference for pertinent and feasible tunnel disease treating schemes. The technology of geophysical prospecting+threedimensional laser scanning in borehole can detect the hollows behind tunnel lining accurately.

Key words: operating railway tunnel, hollow behind lining, threedimensional laser scanning in borehole, threedimensional shape, accurate detection

中图分类号:

U 45

龚伦，仇文革，王立川，王希元. 运营铁路隧道衬砌背后较大空洞的精确检测技术[J]. 隧道建设, 2016, 36(12): 1507-1511.

GONG Lun, QIU Wenge, WANG Lichuan, WANG Xiyuan. Accurate Detection Technologies for Larger Hollows Behind Linings of Operating Railway Tunnel[J]. Tunnel Construction, 2016, 36(12): 1507-1511.

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运营铁路隧道衬砌背后较大空洞的精确检测技术

Accurate Detection Technologies for Larger Hollows Behind Linings of Operating Railway Tunnel

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