Circular self-seepage recharge well head assembly

Abstract

The invention discloses a circular self-seepage recharge well head assembly, belongs to the technical field of water retention and relates to a recharge well and a well head thereof. The recharge well is positioned below the ground surface of a river bottom or trench bottom. The circular self-seepage recharge well head assembly is characterized in that a well head device covering above the well head is arranged on the recharge well and comprises a circular bottomless well cover and a geotextile reversed filter fixedly arranged on the outer side of the well cover, the well cover comprises a circular top cover and a hollow bottomless column body vertically connected to the side wall on the circumference of the top cover, the lower part of the side wall is positioned below the ground surfaceof the river bottom or trench bottom, a top cover square hole is arranged on the top cover, the side wall is provided with a side wall square hole, the recharge well is positioned at the middle of the bottom of the well head device, and gravel reversed filter materials are backfilled around the recharge well. The circular self-seepage recharge well head assembly has strong self-recharge capacity,the function of preventing low-water-level sewage from being backfilled, the function of reversed filtering and certain silt-preventing and impact-resisting capacities, is easy to construct and ensures that the gravel reversed filter materials can be saved.

Description

technical field [0001] The invention relates to a self-seepage recharge well for pressureless groundwater recharge, in particular to a circular self-seepage recharge well head device, which belongs to the technical field of water conservation. Background technique [0002] How to preserve water in some water-deficient areas or how to prevent seawater backflow caused by excessive exploitation of groundwater in coastal areas is a major issue that restricts local people's life and economic development. The means to solve this issue are to strengthen people's awareness of water conservation. Effective use of rain and flood resources is also one of the important measures. [0003] In order to make full use of rain and flood resources, in seasonal rivers with no pollution or slight pollution, a kind of recharge well with the function of filtering particulate impurities in water is often arranged, that is, self-infiltration recharge well, also known as reverse filter recharge well ...

AI Technical Summary

Problems solved by technology

However, the problems of this self-seepage-recharge well are: 1. The self-seepage-recharge well is placed at the bottom of the river or the bottom of the canal, which is very easy to be silted up and washed away by the water flow, which affects the service life; 2. The recharge tank is buried in Underground, there is only a free water inlet section on the top of the recharge tank. In order to ensure sufficient recharge volume, the recharge tank requires a large cross-sectional area and a large amount of construction; 3. To build an ordinary recharge tank requires backfilling 10m 3 Left and right sand and gravel consume a lot of building materials; 4. The use of concrete manhole covers affects the amount of recharge

These defects have seriously affected the use effect of the recharge well, and did not maximize its water retention efficiency

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