Double-layer water well pipe with filtering structure

Abstract

The invention discloses a double-layer water well pipe with a filtering structure. The double-layer water well pipe comprises a pipe body, wherein the pipe body consists of a water seeping outer pipeand a water seeping inner pipe which are coaxially sleeved together distantly; the pipe wall of the water seeping outer pipe is sleeved by a non-woven filter screen; the hole diameters of through holes uniformly formed in the pipe walls of the water seeping inner pipe and the water seeping outer pipe are not greater than 1mm; a small gravel and cobble layer and a medium and coarse sand layer are arranged in an annular space between the water seeping inner pipe and the water seeping outer pipe from inside to outside respectively; the small gravel and cobble layer and the medium and coarse sandlayer are arranged in coaxial cylindrical structures; the grain diameter of medium and coarse sand in the medium and coarse sand layer is 0.25-1.5mm; the grain diameter of small gravels and cobbles is1-4mm. After double-layer filtration, the water quality in a well meets irrigation requirements. The double-layer water well pipe is applied to irrigation by drilling the well for taking water in a fine sand stratum, can prevent fine sand from generating piping erosion and quicksand effects through coarse aggregate and makes water clear.

Description

technical field [0001] The invention relates to a double-layer water well pipe with a filtering structure. Background technique [0002] The way of water intake from groundwater is usually by drilling wells. In Xinjiang, there are also Karez Wells for water intake. Whether it is manual wells or mechanical wells, after the wells are drilled, go down the well pipe to filter water to keep the water clean for people to use. At present, the well pipes The setup is usually a single layer, requiring a thicker filter layer. It is more difficult to drill wells and get water in fine sand formations. On the one hand, it is difficult to form wells, and on the other hand, it is even more difficult to obtain better water quality. A single filter layer makes it difficult to achieve clean water quality. Deposits usually clog tubules in water pipes. [0003] In the vast desert area in the west, in order to control the desert, people have to mine groundwater to obtain water sources to achie...

AI Technical Summary

Problems solved by technology

In these areas, the thickness of the fine sand layer reaches hundreds of meters, or even more than a few hundred meters. The fine sand is easy to form quicksand and piping under the action of water, causing the surrounding terrain to collapse, causing houses to collapse, roads to subside, and floors to collapse. , causing untold damage

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