A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a dewatering method for a deep foundation pit of an existing building. The dewatering method comprises the steps of Step 1, dividing a total water area into a first-stage waterarea and a second-stage water area; Step 2, lowering the water level of the second-stage water area to a first preset height; Step 3, dividing the second-stage water area into a first water area anda second water area; and Step 4, lowering the water level of the second water area to a second preset height. According to the dewatering method, under the condition that the deep foundation pit of the existing building is lack of water stop measures, through combined arrangement of step type annular sealed arrangement of light vacuum wells for water interception and arrangement of dewatering tubewells for dewatering, underground water in the deep foundation pit of the existing building is controlled by single dewatering measures, so that the underground water level is controlled to be belowan excavation surface. The safety of the deep foundation pit and smooth implementation of the existing building transformation are guaranteed; the problems that underground obstacles of the deep foundation pit of transformation engineering are difficult to treat, and a water-stopping curtain is difficult to construct are solved; the construction cost is reduced; green construction of underground water control is achieved; and high economic benefits are achieved.
本发明公开一种既有建筑深基坑的降水方法，包括步骤：S1、将总水域分隔为一级水域和二级水域；S2、将二级水域的水位降至第一预设高度；S3、将二级水域分隔为第一水域和第二水域；S4、将第二水域的水位降至第二预设高度。本申请中，在既有建筑深基坑缺少止水措施的情况下，通过阶梯式环形封闭布置的轻型真空井来截水，通过降水管井来降水组合设置，以单纯的降水措施进行既有建筑深基坑地下水控制，使地下水位控制到开挖面以下。确保了深基坑安全与既有建筑改造的顺利进行，解决了改造工程深基坑地下障碍物处理难、止水帷幕施工难的问题，节约了施工成本，也实现了地下水控制的绿色施工，具有较高的经济效益。
The invention discloses a dewatering method for a deep foundation pit of an existing building. The dewatering method comprises the steps of Step 1, dividing a total water area into a first-stage waterarea and a second-stage water area; Step 2, lowering the water level of the second-stage water area to a first preset height; Step 3, dividing the second-stage water area into a first water area anda second water area; and Step 4, lowering the water level of the second water area to a second preset height. According to the dewatering method, under the condition that the deep foundation pit of the existing building is lack of water stop measures, through combined arrangement of step type annular sealed arrangement of light vacuum wells for water interception and arrangement of dewatering tubewells for dewatering, underground water in the deep foundation pit of the existing building is controlled by single dewatering measures, so that the underground water level is controlled to be belowan excavation surface. The safety of the deep foundation pit and smooth implementation of the existing building transformation are guaranteed; the problems that underground obstacles of the deep foundation pit of transformation engineering are difficult to treat, and a water-stopping curtain is difficult to construct are solved; the construction cost is reduced; green construction of underground water control is achieved; and high economic benefits are achieved.
本发明公开一种既有建筑深基坑的降水方法，包括步骤：S1、将总水域分隔为一级水域和二级水域；S2、将二级水域的水位降至第一预设高度；S3、将二级水域分隔为第一水域和第二水域；S4、将第二水域的水位降至第二预设高度。本申请中，在既有建筑深基坑缺少止水措施的情况下，通过阶梯式环形封闭布置的轻型真空井来截水，通过降水管井来降水组合设置，以单纯的降水措施进行既有建筑深基坑地下水控制，使地下水位控制到开挖面以下。确保了深基坑安全与既有建筑改造的顺利进行，解决了改造工程深基坑地下障碍物处理难、止水帷幕施工难的问题，节约了施工成本，也实现了地下水控制的绿色施工，具有较高的经济效益。
Dewatering method for deep foundation pit of existing building
一种既有建筑深基坑的降水方法
2021-04-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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