Pneumatic precipitation method and used precipitation device

Abstract

The invention relates to a pneumatic precipitation method and a used pneumatic precipitation device in the field of precipitation engineering. The pneumatic precipitation method comprises the following steps of: a, placing a water storage tank (1) with an underground water collector (2), a gas delivery pipe (4) and a water outlet pipe (3) in soil mass under the ground surface, and enabling one endof the water outlet pipe (3) to extend to the ground surface; b, collecting underground water into the water storage tank (1) by utilizing the underground water collector (2); c, inputting gas into the water storage tank (1) by the gas delivery pipe (4), and increasing a gas pressure in the water storage tank (1); and d, by utilizing a gas pressure difference between the gas pressure in the waterstorage tank (1) and a gas pressure on the ground surface, conveying accumulated water in the water storage tank (1) to the ground surface to drain so as to fulfill the aim of precipitation. According to the invention, pumping and precipitation of the underground water are implemented by air flow; and relative to a conventional precipitation device, the pneumatic precipitation device has the advantage that two key parts of a precipitation well pipe and a pumping device do not need to be arranged, so that construction cost is greatly reduced, and precipitation quality and efficiency are improved.

Description

technical field [0001] The present invention relates to the field of precipitation engineering in the field of geotechnical engineering. Background technique [0002] In the construction or maintenance of underground engineering, it is often accompanied by precipitation engineering, which facilitates engineering construction or maintenance by lowering the groundwater table or pressurized water head. For example, in the foundation pit project, it is often accompanied by the dewatering project. For example, in the anti-floating project, the groundwater table can be lowered by precipitation to reduce the buoyancy. In the leak plugging project, the water head difference of the leak can also be reduced by dewatering. Existing dewatering wells generally use well pipes for dewatering or light well point dewatering. The structure of dewatering wells generally includes three parts: well pipes, filter screens and filter materials. The well pipe is a tubular structure such as steel pi...

AI Technical Summary

Problems solved by technology

Existing dewatering technologies all require well pipes, which are expensive to construct, and are often damaged during the excavation process, resulting in abandoned wells. In addition, during foundation floor construction, the well pipes need to be sealed due to the need for continuous dewatering to cause the well pipes to pass through the floor. Well treatment, high cost

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