Coupling system of surface water-saving irrigation and low-pressure underground pipe network recharge and supplementary mining in over-exploitation area

Abstract

The invention provides a coupled system for water-saving irrigation on the surface of an over-exploitation area and recharge and supplementary mining of a low-pressure underground pipe network. A coupled system for surface water-saving irrigation in overexploitation areas and low-pressure underground pipe network recharge and supplementary mining, including: a water source, a filter tank, and the water inlet end of the filter tank is connected to the water source through a first centrifugal pump and a first delivery pipeline; the underground pipe network, It includes a plurality of interconnected underground water filter pipes arranged in a criss-cross pattern. One end of the underground water filter pipe is connected to the filter tank through the water collection pipe, and the other end is connected to the grit chamber; the surface drip irrigation includes the head hub, drip irrigation belt and drip irrigation head. One end of the head hub is connected At the water outlet end of the filter tank, the other end of the head hub is connected to multiple main pipes arranged in rows, connected to the main pipe and arranged in a row with multiple sub-main pipes, the drip irrigation belt is connected to the sub-main pipes, and drip irrigation heads are arranged on the drip irrigation belt; groundwater replenishment , including the production well, is transported to the drip irrigation belt through the second centrifugal pump and the water transmission and distribution pipeline.

Description

technical field [0001] The utility model relates to a coupling system for water-saving irrigation on the surface of an overexploitation area and recharge and recharge of a low-pressure underground pipe network, which belongs to the technical field of groundwater artificial recharge. Background technique [0002] Managed Aquifer Recharge——Managed Aquifer Recharge, referred to as MAR, is to recharge water into the aquifer under controllable conditions. The purpose is to re-exploit or protect the aquifer after a period of time. One of the measures. Aiming at environmental geological problems such as groundwater overexploitation and underground funnels in northern China, aquifer recharge measures such as ground water seepage and well injection recharge were proposed. However, although the ground water infiltration method has low investment and good effect, it occupies a large area; well water injection has high recharge efficiency, but it is prone to clogging problems. [0003...

AI Technical Summary

Problems solved by technology

The natural infiltration of the channel cannot be adjusted manually according to the water volume. The flood season causes water waste. When the water level drops during the non-flood season, the normal operation of the device cannot be guaranteed, and the filter device placed at the bottom of the river will occupy the river area, affect the water flow, and cause sediment deposition. When the filter screen is blocked, the filter efficiency will be reduced.

This device is only aimed at groundwater recharge, ignoring the impact of surface irrigation on groundwater. Surface flooding will cause pollutants such as pesticides and fertilizers to leaching into groundwater, leading to serious ecological problems such as groundwater pollution, and does not consider the development and utilization of recharge water.

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