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A platform for research: civil engineering, architecture and urbanism
Reinforcing structure and reinforcing method for peripheral soil layer of foundation pit close to existing tunnel
The invention discloses a reinforcing structure and a reinforcing method for a peripheral soil layer of a foundation pit close to an existing tunnel, the reinforcing structure for the peripheral soil layer of the foundation pit close to the existing tunnel comprises a foundation pit support structure close to the existing tunnel, and a plurality of rows of auxiliary holes facing the existing tunnel are sequentially formed in the foundation pit support structure from top to bottom; and grouting pipes are erected in the auxiliary holes, grouting equipment is connected through the grouting pipes, grouting is conducted between the foundation pit support structure and the existing tunnel from the interior of the foundation pit, and a grouting reinforcement area is formed. The reinforcing structure is constructed for the adjacent existing tunnel in the newly-built foundation pit, and the limitation that the surface environment conditions above are utilized for conventionally reinforcing the existing tunnel structure is broken through.
本发明公开了一种临近既有隧道的基坑外围土层加固结构及加固方法，该基坑外围土层加固结构包括临近既有隧道的基坑围护结构，所述基坑围护结构从上往下依次布设若干排朝向所述既有隧道方向的辅助孔，所述辅助孔内架设有注浆管，通过所述注浆管连接注浆设备从基坑内往所述基坑围护结构与所述既有隧道之间注浆，形成注浆加固区域。本发明通过在新建基坑内部对临近的既有隧道施工加固结构，打破了常规加固既有隧道结构利用上方地表环境条件的限制。
Reinforcing structure and reinforcing method for peripheral soil layer of foundation pit close to existing tunnel
The invention discloses a reinforcing structure and a reinforcing method for a peripheral soil layer of a foundation pit close to an existing tunnel, the reinforcing structure for the peripheral soil layer of the foundation pit close to the existing tunnel comprises a foundation pit support structure close to the existing tunnel, and a plurality of rows of auxiliary holes facing the existing tunnel are sequentially formed in the foundation pit support structure from top to bottom; and grouting pipes are erected in the auxiliary holes, grouting equipment is connected through the grouting pipes, grouting is conducted between the foundation pit support structure and the existing tunnel from the interior of the foundation pit, and a grouting reinforcement area is formed. The reinforcing structure is constructed for the adjacent existing tunnel in the newly-built foundation pit, and the limitation that the surface environment conditions above are utilized for conventionally reinforcing the existing tunnel structure is broken through.
本发明公开了一种临近既有隧道的基坑外围土层加固结构及加固方法，该基坑外围土层加固结构包括临近既有隧道的基坑围护结构，所述基坑围护结构从上往下依次布设若干排朝向所述既有隧道方向的辅助孔，所述辅助孔内架设有注浆管，通过所述注浆管连接注浆设备从基坑内往所述基坑围护结构与所述既有隧道之间注浆，形成注浆加固区域。本发明通过在新建基坑内部对临近的既有隧道施工加固结构，打破了常规加固既有隧道结构利用上方地表环境条件的限制。
Reinforcing structure and reinforcing method for peripheral soil layer of foundation pit close to existing tunnel
一种临近既有隧道的基坑外围土层加固结构及加固方法
ZHAO WENHUA (author) / YANG WENSHENG (author) / YOU DONGCHAO (author) / ZHANG HONGWEI (author) / ZHOU YUCHEN (author) / HE MAOZHOU (author) / JIANG XIAO (author) / WU KAI (author) / XU LEI (author)
2023-08-04
Patent
Electronic Resource
Chinese
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