Construction technology of shield tunneling crossing single tunnel and double track underground excavation station with small clear distance in sandy pebble water-rich area

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Aug.2023, Vol.46 No.8: 1109-1114

DOI: 10.3969/j.issn.1003-5060.2023.08.016

Authors

WANG Yuanliu $ ^{1} $, YI Lingbing $ ^{2} $, DU Mingfang $ ^{3} $, LIU Shenghuan $ ^{4} $

(1. Henan Zhengyang Construction Engineering Group Co., Ltd., Zhengzhou 450001, China; 2. CCCC Rail Transit Division, Beijing 100088, China; 3. School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450001, China; 4. China Construction Eighth Engineering Division Co., Ltd., Shanghai 200122, China)

Abstract and Keywords

Abstract: In order to study the impact of the construction of shield tunneling crossing single tunnel and double track underground excavation station with small clear distance in sandy pebble water-rich area on the existing underground excavation station, the construction of shield tunneling is designed in the background of the new shield tunneling project adjacent to the existing underground excavation station with small clear distance, and the numerical calculation and analysis of the construction process of shield tunneling crossing single tunnel and double track underground excavation station with small clear distance in sandy pebble water-rich area are carried out using MIDAS calculation and analysis program. The displacement variation law of the existing underground excavation station during the construction of shield tunneling with small clear distance is summarized. The differential settlement characteristics of deformation joints at the boundary of open and concealed excavation of the existing underground excavation station are studied. The change trend of track settlement of the existing underground excavation station is analyzed. The monitoring results are basically consistent with the sim ulation results, which proves the reliability of the simulation calculation.

Keywords: sandy pebble water-rich area; shield; small clear distance crossing; displacement; settlement

作者信息

王远六 $ ^{1} $，易领兵 $ ^{2} $，杜明芳 $ ^{3} $，刘胜欢 $ ^{4} $

(1. 河南正阳建设工程集团有限公司，河南郑州 450001；2. 中国交建轨道交通事业部，北京 100088；3. 河南工业大学土木建筑学院，河南郑州 450001；4. 中国建筑第八工程局有限公司，上海 200122)

摘要和关键词

摘要: 为研究砂卵石富水区域盾构小净距穿越单洞双线暗挖站施工对既有暗挖站的影响,文章以小净距既有暗挖站段新建盾构区间隧道工程为背景,对盾构区间隧道工程施工进行设计,并用MIDAS计算分析程序对砂卵石富水区域盾构小净距穿越单洞双线暗挖站施工过程进行数值计算分析;总结了盾构小净距穿越施工过程中既有暗挖站位移变化规律;研究了既有暗挖站明暗挖分界位置变形缝差异沉降特征;分析了既有暗挖站轨道沉降变化走势;监测结果与仿真结果变化规律基本一致,佐证了仿真计算的可靠性。

关键词: 砂卵石富水区域；盾构；小净距穿越；位移；沉降

Funding

河南省科技厅自然科学基金资助项目（162102210188）；郑州交通重点工程建设管理中心横向委托资助项目（51000128）和河南省建筑业协会科研开发资助项目（YJX-2023-K01；YJX-2023-K02）

合肥工业大学学报(自然科学版)

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