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Air pressure circulation type rainfall monitoring method
The invention discloses an air pressure circulation type rainfall monitoring method, and relates to the technical field of foundation pit rainfall. The problems of long rainfall period and poor soil body unwatering effect caused by poor soil layer permeability, high water content and the like in a soft soil area are solved. The air pressure circulation type rainfall monitoring method comprises the following steps that a rainfall well pipe is installed, a vacuumizing device and a first water pumping device are installed in a vacuum area of the rainfall well pipe, an air compressing device and a second water pumping device are installed in an air compressing area of the rainfall well pipe, a foundation pit rainfall standard model is established, the water pumping amount QUmax corresponding to the maximum vacuum degree of the vacuumizing device is calculated, the water pumping amount QPmax corresponding to the maximum air pressure of the air compressing device is calculated, a single-well water yield Q according to a field water pumping test is obtained and a relation curve between the single-well water yield Q and the water level descending depth is established; and according to the water pumping amount change value [delta] Q, the actual water pumping amount of the vacuum area and the air compressing area is adjusted in real time, and the actual water pumping amount of the vacuum area and the actual water pumping amount of the air compressing area are kept consistent.
本发明的一种气压循环式降水监控方法，涉及基坑降水技术领域。针对软土地区土层渗透性差，含水量高等原因导致降水周期长，土体疏干效果差的问题。步骤如下：安设降水井管，在降水井管的真空区内安装抽真空装置和抽水装置一，在降水井管的压气区内安装压气装置和抽水装置二，建立基坑降水标准模型，计算抽真空装置最大真空度时对应的抽水量QUmax，以及压气装置最大气压时对应的抽水量QPmax，根据现场抽水试验得出单井出水量Q，并建立单井出水量Q与水位下降深度的关系曲线；根据抽水量变化值△Q实时调整真空区和压气区的实际抽水量，使得真空区和压气区的实际抽水量保持一致。
Air pressure circulation type rainfall monitoring method
The invention discloses an air pressure circulation type rainfall monitoring method, and relates to the technical field of foundation pit rainfall. The problems of long rainfall period and poor soil body unwatering effect caused by poor soil layer permeability, high water content and the like in a soft soil area are solved. The air pressure circulation type rainfall monitoring method comprises the following steps that a rainfall well pipe is installed, a vacuumizing device and a first water pumping device are installed in a vacuum area of the rainfall well pipe, an air compressing device and a second water pumping device are installed in an air compressing area of the rainfall well pipe, a foundation pit rainfall standard model is established, the water pumping amount QUmax corresponding to the maximum vacuum degree of the vacuumizing device is calculated, the water pumping amount QPmax corresponding to the maximum air pressure of the air compressing device is calculated, a single-well water yield Q according to a field water pumping test is obtained and a relation curve between the single-well water yield Q and the water level descending depth is established; and according to the water pumping amount change value [delta] Q, the actual water pumping amount of the vacuum area and the air compressing area is adjusted in real time, and the actual water pumping amount of the vacuum area and the actual water pumping amount of the air compressing area are kept consistent.
本发明的一种气压循环式降水监控方法，涉及基坑降水技术领域。针对软土地区土层渗透性差，含水量高等原因导致降水周期长，土体疏干效果差的问题。步骤如下：安设降水井管，在降水井管的真空区内安装抽真空装置和抽水装置一，在降水井管的压气区内安装压气装置和抽水装置二，建立基坑降水标准模型，计算抽真空装置最大真空度时对应的抽水量QUmax，以及压气装置最大气压时对应的抽水量QPmax，根据现场抽水试验得出单井出水量Q，并建立单井出水量Q与水位下降深度的关系曲线；根据抽水量变化值△Q实时调整真空区和压气区的实际抽水量，使得真空区和压气区的实际抽水量保持一致。
Air pressure circulation type rainfall monitoring method
气压循环式降水监控方法
WANG XINXIN (author) / ZHANG AJIN (author) / CHENG ZICONG (author) / SHEN RONG (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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