激光扫描隧洞变形与岩体结构面测试技术及应用  

In-situ testing technique for tunnel deformation and structural plane of rock mass based on contactless laser scanning method and its application

作　　者：许度 冯夏庭[1] 李邵军[1] 吴世勇 邱士利[1] 周扬一[1] 高要辉 XU Du;FENG Xia-ting;LI Shao-junl;WU Shi-yong;QIU Shi-li;ZHOU Yang-yi;GAO Yao-hui(State Key Laboratory of Geomechanics and Geotechinical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;Yalong River Hydropower Development Company,Ltd.,Chengdu 610051,China)

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [2]雅砻江流域水电开发有限公司,四川成都610051

出　　处：《岩土工程学报》2018年第7期1336-1343,共8页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金重点项目(11232014,U1765206);“十三五”国家重点研发计划项目(2016YFC0600702)

摘　　要：提出了基于三维激光扫描技术的隧洞变形与岩体结构面非接触原位一体化测试技术,建立了基于三维激光扫描信息的岩体结构面定量表征方法。以中国锦屏地下实验室二期工程中的深埋隧洞群为例,应用了本研究的测试技术,介绍了相关测试结果,主要包括隧洞变形和结构面测试的三维激光扫描方法,优势结构面的统计与变形综合分析,并以#5实验室的典型岩爆案例分析了三维激光扫描获得的灾变机制,评价了隧洞锚喷支护设计方法,进一步讨论了三维激光扫描的隧洞变形与岩体结构面测试技术存在的缺陷和改进方法。为隧洞岩体变形、结构面分析和安全监测评价提供了重要支撑。The technique of contactless comprehensive in-situ tests on tunnel deformation and structural plane of rock mass based on the technology of 3 D laser scanning is proposed, and the quantitative characterization methods for structural plane of rock mass are established. With the deep tunnel groups in the second phase project of the Jinping Underground Laboratories as an example, the testing technique of this research is applied, and the relevant test results including the method for tunnel deformation and structural plane tests, advantage structural plane statistics and deformation comprehensive analysis are introduced. Taking the typical rock burst case in the 5 th laboratory as an example, the cognition of catastrophic mechanism is obtained by 3 D laser scanning. The design method for supports mainly based on shotcrete and anchors is evaluated. The disadvantages and the improved method for the technique of tests on tunnel deformation and structural plane of rock mass are discussed. It may provide important supports for the deformation, structural plane analysis and safety monitoring evaluation of tunnels.

关 键 词：三维激光扫描 原位监测 隧洞变形 结构面 

分 类 号：TU443[建筑科学—岩土工程]