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A platform for research: civil engineering, architecture and urbanism
Well sealing construction method without damage to deep foundation pit decompression well bottom plate
The invention provides a deep foundation pit decompression well bottom plate damage-free well sealing construction method. Comprising the steps that earth is excavated to a base, a downcast pipe well is cleaned and manually grooved, a reserved pipe is installed, a gap between the downcast pipe well and the reserved pipe is backfilled, a partition plate is installed, micro-expansion anti-seepage concrete is synchronously poured on the portion, above the partition plate, inside and outside the pipe well, the top of the pipe well is welded with a plugging cover plate, and bentonite is laid in a gap from the plugging cover plate to the bottom of a cushion layer. A reserved pipe end water suction pump is installed, a basement structure is constructed, and the well is sealed. The risk of underground water leakage in the later period due to the fact that holes are formed in the structural bottom plate can be avoided, and remarkable economic and social benefits are achieved; pressure reduction and precipitation are conducted on the foundation bottom plate through the reserved pipe, in the underground structure construction process, holes do not need to be reserved in the bottom plate, secondary pouring and hole blocking are not needed, bottom plate construction is formed at a time, a seepage channel of underground water is eliminated, and structural integrity and impermeability are good.
本发明提供了一种深基坑减压井底板无损伤的封井施工方法，包括：土方开挖至基底、清理降水管井并人工开槽、安装预留管、回填降水管井内与预留管之间缝隙并安装隔板、管井内外于隔板上方同步浇筑微膨抗渗混凝土、管井顶部封堵盖板焊接、封堵盖板至垫层底部空隙中铺设膨润土、安装预留管端部抽水泵、施工地下室结构、封井。本发明能够避免在结构底板上开洞以致后期出现地下水渗漏风险，具有显著的经济和社会效益；通过预留管进行对基础底板减压和降水，在地下结构施工过程中无需在底板留洞，无需二次浇筑堵洞，底板施工一次成型，消除了地下水的渗流通道，结构整体性和抗渗性较。
Well sealing construction method without damage to deep foundation pit decompression well bottom plate
The invention provides a deep foundation pit decompression well bottom plate damage-free well sealing construction method. Comprising the steps that earth is excavated to a base, a downcast pipe well is cleaned and manually grooved, a reserved pipe is installed, a gap between the downcast pipe well and the reserved pipe is backfilled, a partition plate is installed, micro-expansion anti-seepage concrete is synchronously poured on the portion, above the partition plate, inside and outside the pipe well, the top of the pipe well is welded with a plugging cover plate, and bentonite is laid in a gap from the plugging cover plate to the bottom of a cushion layer. A reserved pipe end water suction pump is installed, a basement structure is constructed, and the well is sealed. The risk of underground water leakage in the later period due to the fact that holes are formed in the structural bottom plate can be avoided, and remarkable economic and social benefits are achieved; pressure reduction and precipitation are conducted on the foundation bottom plate through the reserved pipe, in the underground structure construction process, holes do not need to be reserved in the bottom plate, secondary pouring and hole blocking are not needed, bottom plate construction is formed at a time, a seepage channel of underground water is eliminated, and structural integrity and impermeability are good.
本发明提供了一种深基坑减压井底板无损伤的封井施工方法，包括：土方开挖至基底、清理降水管井并人工开槽、安装预留管、回填降水管井内与预留管之间缝隙并安装隔板、管井内外于隔板上方同步浇筑微膨抗渗混凝土、管井顶部封堵盖板焊接、封堵盖板至垫层底部空隙中铺设膨润土、安装预留管端部抽水泵、施工地下室结构、封井。本发明能够避免在结构底板上开洞以致后期出现地下水渗漏风险，具有显著的经济和社会效益；通过预留管进行对基础底板减压和降水，在地下结构施工过程中无需在底板留洞，无需二次浇筑堵洞，底板施工一次成型，消除了地下水的渗流通道，结构整体性和抗渗性较。
Well sealing construction method without damage to deep foundation pit decompression well bottom plate
一种深基坑减压井底板无损伤的封井施工方法
SUN YONGWANG (author) / MA HUAIZHANG (author) / JIANG LEI (author) / ZHAO ZHITAO (author) / WANG ZHENGFEI (author) / XIE DONGZHOU (author) / ZHANG XIAOWANG (author)
2023-11-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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