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Under-film water-gas separation type external discharge comprehensive system for horizontal impermeable layer of plain reservoir

A water-gas separation and integrated system technology, applied in the sewer system, waterway system, water conservancy project, etc., can solve the problem of unsmooth water and gas passage under the membrane, achieve effective and convenient use, avoid clogging, reduce the amount of water under the membrane The effect of air pressure

Inactive Publication Date: 2020-06-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a water-gas separation type efflux comprehensive system under the membrane of the horizontal anti-seepage layer of the plain reservoir, which is used to solve the problem of unsmooth passage of water and air under the membrane, effectively discharge the water vapor under the membrane, reduce the air pressure under the membrane and ensure the anti-seepage system Beneficial effects of stable operation

Method used

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  • Under-film water-gas separation type external discharge comprehensive system for horizontal impermeable layer of plain reservoir
  • Under-film water-gas separation type external discharge comprehensive system for horizontal impermeable layer of plain reservoir
  • Under-film water-gas separation type external discharge comprehensive system for horizontal impermeable layer of plain reservoir

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A water and air separation type efflux comprehensive system under the membrane of the horizontal anti-seepage layer of the plain reservoir, such as figure 1 and figure 2As shown, it includes an under-membrane water-gathering system 1, a water-gas separation system 2 at the foot of the dam, and a drainage and exhaust system 3 at the dam site. , the center of the warehouse is a high point, and this structure is convenient for the collection and discharge of liquid; the water collection and gas collection system 1 under the membrane includes water collection channels 11 and gas collection channels 12 in a staggered distribution, and the water collection channels 11 and gas collection channels 12 are respectively It is used to collect the gas and liquid in the soil body and discharge them; the water-air separation system 2 at the foot of the dam in the library includes a gas storage channel 21 and a water storage channel 22 arranged along the dam toe line, and utilizes gas...

Embodiment 2

[0046] On the basis of Example 1, such as Figure 4-Figure 7 and Figure 9 As shown, a layer of the same geotextile 42 is provided on the outside of the water collection channel 42, and a sand layer 43 is set between the geotextile 42 and the geotextile 42 on the outside of the water collection channel 11 by backfilling coarse sand. The water collection channel 11 is a soft permeable pipe, and the soft permeable pipe includes an outer plastic 111 and a spring steel wire 112 for supporting the outer plastic 111. The lower part of the blind ditch 41 is provided with a soft permeable pipe. The outer periphery of the permeable pipe is wrapped with a geotextile 42 used as a filter membrane, and the soft permeable pipe and the geotextile 42 outside it form a water collection channel 11 .

[0047] Such as figure 2 As shown, the outlet of the exhaust channel 31 is provided with a wave wall 10 , and the outlet of the exhaust channel 31 is located in the wave wall 10 . When the wate...

Embodiment 3

[0049] On the basis of Example 2, such as Figure 10 As shown, the water collection channel 42 can be replaced by a symmetrical gourd-shaped water collection pipe 5, the water collection pipe 5 is made of PVC material, the water collection pipe 5 is provided with a through hole and its outer side is wrapped with a geotextile.

[0050] The water vapor collection space is composed of a symmetrical gourd-shaped water collection pipe 5, the upper layer collects gas, the lower layer collects water flow, the sand layer 43 and the upper part of the water collection pipe 5 form a gas collection channel 12, and the inner lower part of the water collection pipe 5 is a water collection channel 11. The gas and water flow enter the water-air separation box 71 through the symmetrical gourd-shaped pipe / sand layer 43, and the water flow diffuses to the water storage pipe 72 on both sides and the downstream drain pipe 81 to reduce the water level. The exhaust channel 31 is discharged from the ...

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Abstract

The invention provides an under-film water-gas separation type external discharge comprehensive system for a horizontal impermeable layer of a plain reservoir. The comprehensive system comprises an under-film water and gas collecting system, an in-reservoir dam toe water-gas separation system and a dam site drainage and exhaust system, wherein the under-film water and gas collecting system is obliquely arranged from the center in the reservoir to the outer side, the under-film water and gas collecting system comprises water collecting channels and gas collecting channels which are distributedin a staggered manner, the in-reservoir dam toe water-gas separation system comprises gas storage channels and water storage channels which are arranged along dam toe lines, the gas storage channels are connected with the gas collecting channels, and the water storage channels are connected with the water collecting channels. The comprehensive system is reasonable in structural design, the schemeof drainage and exhaust under a film is optimized, gas / water under the film is enabled to be discharged separately through a collecting, storage and discharge system, and the problems that accumulatedwater in an exhaust sand ditch under the film of the plain reservoir affects pore gas discharge, a check valve fails and cannot discharge gas, and the check valve damages the integrity of the horizontal impermeable layer of a geofilm are solved.

Description

technical field [0001] The invention belongs to the technical field of water and gas discharge systems, in particular to a water and gas separation type external discharge comprehensive system under the membrane of a horizontal anti-seepage layer of a plain reservoir. Background technique [0002] When constructing plain reservoirs, when there is no impermeable formation in the reservoir area or it is difficult to completely intercept seepage vertically due to the depth of the impermeable layer, the horizontal anti-seepage scheme of the entire reservoir bottom is often adopted, that is, the anti-seepage scheme of the storage plate; the seepage prevention of the storage plate Materials often use geomembrane or composite geomembrane. However, when the area of ​​the storage plate is large and the buried depth of the groundwater level is moderate, due to the rise of the groundwater level in the reservoir area and the leakage of geomembrane defects, the gas in the unsaturated soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16E02B3/12E02D31/00E03F3/02E03F3/04E02D3/10
CPCE02B3/122E02B3/16E02D3/10E02D31/004E03F3/02E03F3/04
Inventor 李旺林薛霞于海瑞普永柽
Owner UNIV OF JINAN
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