Water volume-water level servo control water-lowering well based on information feedback and dynamic backflow

Abstract

The invention relates to a water volume-water level servo control water-lowering well based on information feedback and dynamic backflow. The water volume-water level servo control water-lowering wellcomprises a drainage well unit, an information acquisition unit and a control unit, wherein the drainage well unit is provided with a well pipe, a drainage pipe and a return pipe, the drainage pipe is provided with a water pump and a drainage valve, and the return pipe is connected with the drainage pipe; the information acquisition unit is provided with a dynamic water level acquisition mechanism, a drainage flow acquisition mechanism and a backflow flow acquisition mechanism, the dynamic water level acquisition mechanism is used for collecting water level in the well, and the drainage flowacquisition mechanism and the backflow flow acquisition mechanism are respectively used for collecting the flow of the drainage pipe and the flow of the return pipe; and the control unit is provided with a signal receiver, a backflow control valve, a servo motor and a PID controller, the signal receiver is used for receiving and treating the water level, the flow of the drainage pipe and the flowsignal of the return pipe, the backflow control valve is arranged on the return pipe, the servo motor is used for controlling the backflow control valve, and the PID controller is used for receiving aprocessed signal and comparing the signal with a target value to control the servo motor. Compared with the prior art, the water volume-water level servo control water-lowering well can achieve the goal of accurately controlling the water level or the water displacement of a precipitation well, and has great significance for realizing the automation of precipitation engineering.

Description

technical field [0001] The invention relates to a technical field of geological engineering, geotechnical engineering, tunnel and underground construction engineering, and dewatering engineering, in particular to a water volume-water level servo-controlled depressurization well based on information feedback and dynamic backflow. Background technique [0002] Groundwater has adverse effects on underground engineering. In many construction projects, excavation and dewatering are often encountered. Commonly used dewatering methods include open ditch method, hidden ditch method, light well point method, deep well point method, etc. For the deep well point precipitation method widely used in major projects, there are often many problems in the actual precipitation process. One is that the displacement cannot be accurately controlled; the other is that the dynamic water level in the pumping well cannot be accurately controlled; the third is that the current displacement is mainly ...

AI Technical Summary

Problems solved by technology

One is that the displacement cannot be accurately controlled; the other is that the dynamic water level in the pumping well cannot be accurately controlled; the third is that the current displacement is mainly measured by a water meter, and the method of measuring the water level in the well is mainly manually using a water gauge, which is backward and time-consuming. Fourth, automatic control cannot be realized in the process of drainage

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