武汉地铁4号线越江盾构隧道汛期形变规律分析  

Analysis on the deformation law of the cross-river shield tunnel of Wuhan metro line 4 in flood season

作　　者：赵丽凤[1,2] 唐超 王丽[1,3] 王勇 ZHAO Lifeng;TANG Chao;WANG Li;WANG Yong(Beijing Urban Construction Survey and Design Institute Co.,Ltd.,Beijing 100101,China;Beijing Key Laboratory of Deep Foundation Pit Geotechnical Engineering of Rail Transit,Beijing 100101,China;China University of Geosciences(Beijing),Beijing 100191,China)

机构地区：[1]北京城建勘测设计研究院有限责任公司,北京100101 [2]城市轨道交通深基坑岩土工程北京市重点实验室,北京100101 [3]中国地质大学(北京),北京100191

出　　处：《测绘通报》2021年第8期74-74,75-77,共4页Bulletin of Surveying and Mapping

摘　　要：本文以武汉地铁4号线越江隧道2020年汛期加密监测为工程背景,通过应用三维激光盾构结构测量的逐环监测数据分析了越江隧道全区间逐环监测数据并确定重点监测区间。利用重点监测区间3次逐环加密监测数据分析了由于长江水位持续上升引起的收敛变化趋势,并结合人工监测点位的分布和数据特征以说明传统人工监测盲区多,在关注绝对位置变化的同时忽略了隧道结构形态相对变化。越江隧道所处的地理、地质环境复杂,汛期的三维激光逐环监测为隧道安全运营提供了有效的保障基础。In this paper,based on the engineering background of the intensive monitoring of the Wuhan metro line 4 cross-river tunnel during the flood season in 2020,the project analyzes the ring-by-ring monitoring data of the entire section of the cross-river tunnel by applying the ring-by-ring monitoring data measured by the three dimensional laser shield structure and determines the key monitoring intervals.Three round-by-ring encrypted monitoring data discussions in key monitoring intervals illustrate the trend of convergence changes caused by the continuous rise of the water level of the Yangtze River.Combined with the distribution of manual monitoring points and data characteristics,it shows that there are many blind areas in traditional manual monitoring.When we focus on absolute position changes,which makes the tunnel structure relative changes in morphology to be ignored.The cross-river tunnel is located in a complex geographical and geological environment,and the three dimensional laser ring-by-ring monitoring in flood season provides an effective guarantee for the safe operation of the tunnel.

关 键 词：三维激光 逐环检测 隧道结构形态 安全运营 

分 类 号：P258[天文地球—测绘科学与技术]