Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Protection structure and method for adjacent underground pipeline in excavation project of riprap reclamation area
The invention provides a protection structure and method for an adjacent underground pipeline in an excavation project of a riprap reclamation area. Aiming at the characteristics of a bottom layer of the riprap reclamation area, cracks of a riprap layer are filled through grouting reinforcement to form a grouting reinforcement area, so that local large-area collapse is prevented; isolation piles are arranged between the grouting reinforcement area and the pipeline, the grouting reinforcement area and the isolation piles jointly act to isolate transmission of deformation displacement, and meanwhile, the isolation piles, the grouting reinforcement area and a underground diaphragm wall are connected into a whole through crown beams, connecting beams and ballasting cover plates, so that the problems of large stratum deformation, slurry leakage and the like caused by unstable excavation of the riprap layer are effectively solved, the stability of an excavation unloading area of a foundation pit is improved, then stratum differential settlement caused by foundation pit excavation is reduced, deformation of the underground pipeline caused by stratum deformation is restrained, and the structural safety of the underground pipeline is effectively protected.
本发明提供一种抛石填海区开挖工程临近地下管线的保护结构及方法，针对抛石填海区的底层特点，通过注浆加固将抛石层的裂隙填满形成注浆加固区，防止局部大面积塌方，并在注浆加固区与管线之间设置隔离桩，注浆加固区与隔离桩共同作用能够隔断变形位移的传递，同时，冠梁、连梁和压重盖板将隔离桩、注浆加固区和地连墙连接成一整体，有效避免抛石层开挖不稳定产生的地层大变形以及漏浆等问题，提高基坑开挖卸载区的稳定性，从而减少基坑开挖引发的地层不均匀沉降，抑制地层变形导致的地下管线的变形，有效保护地下管线的结构安全。
Protection structure and method for adjacent underground pipeline in excavation project of riprap reclamation area
The invention provides a protection structure and method for an adjacent underground pipeline in an excavation project of a riprap reclamation area. Aiming at the characteristics of a bottom layer of the riprap reclamation area, cracks of a riprap layer are filled through grouting reinforcement to form a grouting reinforcement area, so that local large-area collapse is prevented; isolation piles are arranged between the grouting reinforcement area and the pipeline, the grouting reinforcement area and the isolation piles jointly act to isolate transmission of deformation displacement, and meanwhile, the isolation piles, the grouting reinforcement area and a underground diaphragm wall are connected into a whole through crown beams, connecting beams and ballasting cover plates, so that the problems of large stratum deformation, slurry leakage and the like caused by unstable excavation of the riprap layer are effectively solved, the stability of an excavation unloading area of a foundation pit is improved, then stratum differential settlement caused by foundation pit excavation is reduced, deformation of the underground pipeline caused by stratum deformation is restrained, and the structural safety of the underground pipeline is effectively protected.
本发明提供一种抛石填海区开挖工程临近地下管线的保护结构及方法，针对抛石填海区的底层特点，通过注浆加固将抛石层的裂隙填满形成注浆加固区，防止局部大面积塌方，并在注浆加固区与管线之间设置隔离桩，注浆加固区与隔离桩共同作用能够隔断变形位移的传递，同时，冠梁、连梁和压重盖板将隔离桩、注浆加固区和地连墙连接成一整体，有效避免抛石层开挖不稳定产生的地层大变形以及漏浆等问题，提高基坑开挖卸载区的稳定性，从而减少基坑开挖引发的地层不均匀沉降，抑制地层变形导致的地下管线的变形，有效保护地下管线的结构安全。
Protection structure and method for adjacent underground pipeline in excavation project of riprap reclamation area
抛石填海区开挖工程临近地下管线的保护结构及方法
BAO XIAOHUA (Autor:in) / PAN JIHAO (Autor:in) / CUI HONGZHI (Autor:in) / CHEN XIANGSHENG (Autor:in) / WAN BO (Autor:in) / ZHOU ZHEN (Autor:in) / GAN WENSHUANG (Autor:in)
23.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Influence of Tunnel Excavation on Adjacent Underground Pipeline
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