Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pump station foundation pit integrated drainage system and construction method
The invention provides a pump station foundation pit integrated drainage system. The system is characterized in that a circle of cement soil seepage interception wall is arranged outwards at intervals along the outer side line of a foundation pit to form a closed seepage interception wall body, the cement soil seepage interception wall penetrates through a permeable layer, and the bottom of the cement soil seepage interception wall extends to the position 2 m below a relative impervious layer; on the outer side of the foundation pit with the closed space formed by the cement soil seepage interception wall, a circle of out-pit pressure reduction wells is constructed outwards along the cement soil seepage interception wall, and the bottom elevation of the pressure reduction wells is located at the bottom elevation of the permeable layer; an in-pit drainage well is constructed in the foundation pit, and the bottom elevation of the drainage well is located at the bottom elevation of the permeable layer; and the pump station foundation pit integrated drainage system is jointly formed by the cement soil seepage interception walls, the out-pit pressure reduction wells and the pit interior drainage well, a closed seepage interception wall is formed by the cement soil seepage interception walls, the underground water level in a foundation pit is reduced to be 0.5 m or below of a design base through the drainage drainage well, and the water head difference between the interior and the exterior of the foundation pit is kept within the range of 7 m through the drainage pressure reduction well. The dewatering and drainage requirements of the foundation pit of the large pump station can be met, and dry land construction conditions are created.
本发明提供了一种泵站基坑一体化排水体系，沿基坑外边线向外间隔围设一圈水泥土截渗墙，形成封闭截渗墙体，水泥土截渗墙穿过透水层、底部深入至相对不透水层以下2m深度处；在由水泥土截渗墙形成封闭空间的基坑外侧，沿水泥土截渗墙向外施工一圈坑外降压井，降压井井底高程位于透水层底高程；在基坑内施工坑内疏干井，疏干井井底高程位于透水层底高程；由水泥土截渗墙、坑外降压井与坑内疏干井共同构成泵站基坑一体化排水体系，利用水泥土截渗墙形成封闭截渗墙体，通过抽排疏干井使基坑内地下水位降低至设计基底0.5m以下，通过抽排降压井使基坑内外水头差保持在7m范围内。本发明能够满足大型泵站基坑降排水要求，创造干地施工条件。
Pump station foundation pit integrated drainage system and construction method
The invention provides a pump station foundation pit integrated drainage system. The system is characterized in that a circle of cement soil seepage interception wall is arranged outwards at intervals along the outer side line of a foundation pit to form a closed seepage interception wall body, the cement soil seepage interception wall penetrates through a permeable layer, and the bottom of the cement soil seepage interception wall extends to the position 2 m below a relative impervious layer; on the outer side of the foundation pit with the closed space formed by the cement soil seepage interception wall, a circle of out-pit pressure reduction wells is constructed outwards along the cement soil seepage interception wall, and the bottom elevation of the pressure reduction wells is located at the bottom elevation of the permeable layer; an in-pit drainage well is constructed in the foundation pit, and the bottom elevation of the drainage well is located at the bottom elevation of the permeable layer; and the pump station foundation pit integrated drainage system is jointly formed by the cement soil seepage interception walls, the out-pit pressure reduction wells and the pit interior drainage well, a closed seepage interception wall is formed by the cement soil seepage interception walls, the underground water level in a foundation pit is reduced to be 0.5 m or below of a design base through the drainage drainage well, and the water head difference between the interior and the exterior of the foundation pit is kept within the range of 7 m through the drainage pressure reduction well. The dewatering and drainage requirements of the foundation pit of the large pump station can be met, and dry land construction conditions are created.
本发明提供了一种泵站基坑一体化排水体系，沿基坑外边线向外间隔围设一圈水泥土截渗墙，形成封闭截渗墙体，水泥土截渗墙穿过透水层、底部深入至相对不透水层以下2m深度处；在由水泥土截渗墙形成封闭空间的基坑外侧，沿水泥土截渗墙向外施工一圈坑外降压井，降压井井底高程位于透水层底高程；在基坑内施工坑内疏干井，疏干井井底高程位于透水层底高程；由水泥土截渗墙、坑外降压井与坑内疏干井共同构成泵站基坑一体化排水体系，利用水泥土截渗墙形成封闭截渗墙体，通过抽排疏干井使基坑内地下水位降低至设计基底0.5m以下，通过抽排降压井使基坑内外水头差保持在7m范围内。本发明能够满足大型泵站基坑降排水要求，创造干地施工条件。
Pump station foundation pit integrated drainage system and construction method
泵站基坑一体化排水体系及施工方法
YANG YI (Autor:in) / LIU GUANG (Autor:in) / ZHANG XIN (Autor:in) / YAO HUAYAN (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Foundation pit drainage pneumatic pump and drainage construction method
| Europäisches Patentamt | 2023
Dual drainage structure for deep foundation pit of pump station and construction method
| Europäisches Patentamt | 2024
Flood drainage pump station and construction method thereof
| Europäisches Patentamt | 2022