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A platform for research: civil engineering, architecture and urbanism
Construction method and device for blocking reserved relief well of open caisson
The invention relates to an open caisson reserved relief well plugging construction method and device. The open caisson reserved relief well plugging construction method comprises the steps that a mounting piece is mounted on a branch pipe on one side of a relief well, a first grouting pipe extends into the bottom of the relief well, a second grouting pipe extends to the upper end of the relief well, and a pipe opening extending into the upper end of the relief well is temporarily plugged; when it is detected that the liquid at the outlet of the mounting part is a thick grouting substance, grouting of the first grouting pipe is stopped, and standing is conducted; after the grouting substance injected into the first grouting pipe is initially set, secondary grouting is conducted through a second grouting pipe, the grouting pressure of the second grouting pipe is larger than that of the first grouting pipe, the temporary plug is opened, and in the later period of secondary grouting, grouting is conducted while the second grouting pipe is pulled out slowly; and dismounting the mounting piece. The method can ensure that no underground water exists in the relief well, dense plugging of the relief well is achieved under the condition that no rainfall exists in the surrounding environment, the grouting material loss can be greatly reduced in the plugging process, the construction cost is low, the construction quality can be ensured, and the plugging quality is good.
本发明涉及一种沉井预留减压井封堵施工方法及装置，包括在减压井一侧支管上安装安装件，将第一注浆管伸入减压井井底，第二注浆管伸至减压井上端，伸入减压井上端的管口临时封堵，通过第一注浆管第一次注浆，待检测到安装件排出口液体为浓稠状的注浆物质时，停止对第一注浆管注浆并进行静置；待第一注浆管所注入注浆物质初凝后，通过第二注浆管第二次注浆，第二注浆管的注浆压力大于第一注浆管注浆压力，临时封堵打开，在第二次注浆的后期，边注浆边缓慢向外拔第二注浆管；拆除安装件。本发明可保证减压井内无地下水，在周边环境不降水的情况下实现减压井的密实封堵，封堵过程可大大减少注浆物质损失，施工成本低，可保证施工质量，封堵质量好。
Construction method and device for blocking reserved relief well of open caisson
The invention relates to an open caisson reserved relief well plugging construction method and device. The open caisson reserved relief well plugging construction method comprises the steps that a mounting piece is mounted on a branch pipe on one side of a relief well, a first grouting pipe extends into the bottom of the relief well, a second grouting pipe extends to the upper end of the relief well, and a pipe opening extending into the upper end of the relief well is temporarily plugged; when it is detected that the liquid at the outlet of the mounting part is a thick grouting substance, grouting of the first grouting pipe is stopped, and standing is conducted; after the grouting substance injected into the first grouting pipe is initially set, secondary grouting is conducted through a second grouting pipe, the grouting pressure of the second grouting pipe is larger than that of the first grouting pipe, the temporary plug is opened, and in the later period of secondary grouting, grouting is conducted while the second grouting pipe is pulled out slowly; and dismounting the mounting piece. The method can ensure that no underground water exists in the relief well, dense plugging of the relief well is achieved under the condition that no rainfall exists in the surrounding environment, the grouting material loss can be greatly reduced in the plugging process, the construction cost is low, the construction quality can be ensured, and the plugging quality is good.
本发明涉及一种沉井预留减压井封堵施工方法及装置，包括在减压井一侧支管上安装安装件，将第一注浆管伸入减压井井底，第二注浆管伸至减压井上端，伸入减压井上端的管口临时封堵，通过第一注浆管第一次注浆，待检测到安装件排出口液体为浓稠状的注浆物质时，停止对第一注浆管注浆并进行静置；待第一注浆管所注入注浆物质初凝后，通过第二注浆管第二次注浆，第二注浆管的注浆压力大于第一注浆管注浆压力，临时封堵打开，在第二次注浆的后期，边注浆边缓慢向外拔第二注浆管；拆除安装件。本发明可保证减压井内无地下水，在周边环境不降水的情况下实现减压井的密实封堵，封堵过程可大大减少注浆物质损失，施工成本低，可保证施工质量，封堵质量好。
Construction method and device for blocking reserved relief well of open caisson
一种沉井预留减压井封堵施工方法及装置
SHI WENHAO (author) / WU YIZHU (author) / XU SHUIGEN (author) / DENG WEI (author) / FAN LYUYE (author) / WU JINGHONG (author) / JIANG YUE (author) / GUO CHAOMEI (author)
2023-07-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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