摘要
为研究隧道的收敛变形,采用工程试验研究方法引入了三维激光扫描技术,针对隧道环境提出了用一次扫描多点整体监测取代传统的单点监测求收敛值的方法;讨论了隧道直径、隧道表面的粗糙度、扫描分辨率、扫描入射角、隧道表面的反射率等因素对扫描结果的影响。实践应用表明,隧道收敛变形整体监测方法可以快速、全面地获取隧道表面的完整数据,对周期性的隧道扫描结果的对比分析能表示任意里程、任意点的变形,克服了传统方法的不足。
In order to study the tunnel convergence, an overall tunnel deformation monitoring method is adopted with engi- neering experimental research tools, a multi-point scanning method is proposed to replace the traditional single-point moni- toring, at the same time, the influences of tunnel radius, sur- face roughness, scanning resolution, scanning angles of inci- dence and tunnel surface reflectivity over the scanning result are discussed. Practical application of this method shows that it provides a fast and full access to get the complete deformation data of the tunnel surface, the results of periodic tunneling scanning comparison and analysis can represent deformation of any point at any mileage, thus overcoming the shortcomings of traditional scanning methods.
出处
《城市轨道交通研究》
北大核心
2014年第10期51-54,共4页
Urban Mass Transit
基金
河南省重点科技攻关计划(122102210421)
河南省教育厅科技攻关计划(2010A420001)
关键词
隧道变形
三维激光扫描
整体监测
tunnel deformation
3 dimensional laser scan-ning
overall monitoring
