A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Existing multi-track parallel tunnel group overlying foundation pit excavation unloading stratum upheaval control method
The invention discloses an unloading stratum upheaval control method for excavation of an overlying foundation pit of an existing multi-track parallel tunnel group. The method comprises the steps of grouting reinforcement of a surrounding stratum of an existing tunnel group, construction of an anti-upheaval-foundation pit supporting combined protection system of the existing tunnel group, layered, striped and segmented stripping excavation of soil unloading of a foundation pit covering the tunnel group, upheaval deformation prediction, prevention and control of the existing tunnel group and the like. The method fills the blank that an effective, feasible and scientific overlying foundation pit excavation unloading stratum upheaval control method aiming at the extremely high control requirement of floating deformation of the existing multi-line parallel tunnel group does not exist at present, and can improve the operation safety of the underground existing tunnel group and the foundation pit excavation supporting stability; the foundation pit excavation unloading stratum upheaval control method is perfected, the anti-upheaval and foundation pit supporting safety target of an existing tunnel group is achieved, and the method has high application value for urban underground space dense area overlying stratum excavation unloading engineering and has important significance for ensuring the safety of the foundation pit and other underground excavation unloading engineering.
本发明公开既有多线并行隧道群上覆基坑开挖卸荷地层隆起控制方法，该方法包括既有隧道群周边地层注浆加固、既有隧道群防隆起‑基坑支护联合防护体系施工、隧道群上覆基坑土体卸荷分层分条分段抽条开挖和既有隧道群隆起变形预测与防控等方法，填补了目前尚无针对既有多线并行隧道群上浮变形极高的控制要求的有效、可行、科学的上覆基坑开挖卸荷地层隆起控制方法的空白，采用方法可提高地下既有隧道群运营安全和基坑开挖支护稳定性，完善基坑开挖卸荷地层隆起控制方法、实现既有隧道群防隆起‑‑基坑支护安全目标，对城市地下空间密集区上覆地层开挖卸荷工程有较强的应用价值，对确保基坑等地下开挖卸荷工程安全具有重要意义。
Existing multi-track parallel tunnel group overlying foundation pit excavation unloading stratum upheaval control method
The invention discloses an unloading stratum upheaval control method for excavation of an overlying foundation pit of an existing multi-track parallel tunnel group. The method comprises the steps of grouting reinforcement of a surrounding stratum of an existing tunnel group, construction of an anti-upheaval-foundation pit supporting combined protection system of the existing tunnel group, layered, striped and segmented stripping excavation of soil unloading of a foundation pit covering the tunnel group, upheaval deformation prediction, prevention and control of the existing tunnel group and the like. The method fills the blank that an effective, feasible and scientific overlying foundation pit excavation unloading stratum upheaval control method aiming at the extremely high control requirement of floating deformation of the existing multi-line parallel tunnel group does not exist at present, and can improve the operation safety of the underground existing tunnel group and the foundation pit excavation supporting stability; the foundation pit excavation unloading stratum upheaval control method is perfected, the anti-upheaval and foundation pit supporting safety target of an existing tunnel group is achieved, and the method has high application value for urban underground space dense area overlying stratum excavation unloading engineering and has important significance for ensuring the safety of the foundation pit and other underground excavation unloading engineering.
本发明公开既有多线并行隧道群上覆基坑开挖卸荷地层隆起控制方法，该方法包括既有隧道群周边地层注浆加固、既有隧道群防隆起‑基坑支护联合防护体系施工、隧道群上覆基坑土体卸荷分层分条分段抽条开挖和既有隧道群隆起变形预测与防控等方法，填补了目前尚无针对既有多线并行隧道群上浮变形极高的控制要求的有效、可行、科学的上覆基坑开挖卸荷地层隆起控制方法的空白，采用方法可提高地下既有隧道群运营安全和基坑开挖支护稳定性，完善基坑开挖卸荷地层隆起控制方法、实现既有隧道群防隆起‑‑基坑支护安全目标，对城市地下空间密集区上覆地层开挖卸荷工程有较强的应用价值，对确保基坑等地下开挖卸荷工程安全具有重要意义。
Existing multi-track parallel tunnel group overlying foundation pit excavation unloading stratum upheaval control method
既有多线并行隧道群上覆基坑开挖卸荷地层隆起控制方法
ZHANG YOUJU (author) / WANG FEI (author) / SHEN HONGBO (author) / XU GUOQING (author) / JIANG PENG (author) / CHENG BANGFU (author) / WU CHUNBAO (author) / ZHANG HAICHAO (author)
2024-04-19
Patent
Electronic Resource
Chinese
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