CN104452671A - Downward exhaust pressure reducing device of geomembrane - Google Patents
Downward exhaust pressure reducing device of geomembrane Download PDFInfo
- Publication number
- CN104452671A CN104452671A CN201310420255.9A CN201310420255A CN104452671A CN 104452671 A CN104452671 A CN 104452671A CN 201310420255 A CN201310420255 A CN 201310420255A CN 104452671 A CN104452671 A CN 104452671A
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- Prior art keywords
- layer
- geomembrane
- exhaust
- hard
- superfine
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a downward exhaust pressure reducing device of a geomembrane. The device comprises a water layer (1), a soil layer (2), the geomembrane (3) and a soil layer (4); and an exhaust device comprises a superfine soil layer (5), a superfine sand grain layer (6), a hard medium gravel layer (7), a hard large gravel layer (8) and a medium uniform stone layer (9). The working principle of the device is as follows: the device is mainly applied to a leakage preventing dam body; the geomembrane (3) is arranged between the soil layer (2) and the soil layer (4); and the exhaust device is arranged in the middle of the geomembrane (3). The main function of the structure is to upwards exhaust high-pressure gas at the lower layer of the geomembrane (3) to the soil layer through the exhaust device. The hard large gravel layer (8) and the medium uniform stone layer (9) realize the gas collection and the support of the exhaust device; the superfine sand grain layer (6) and the hard medium gravel layer (7) realize upward dispersion of the gas and an exhaust channel; and the superfine soil layer (5) realizes the sealing of a sand layer to prevent upper moisture from downwards leaking.
Description
Technical field
The present invention relates to a kind of geomembrane decompressor, specifically relates to exhaust decompression device under a kind of geomembrane.
Background technology
In recent years, geomembrane, as a kind of novel impervious material, has been widely used in all kinds of seepage control project of water, has achieved good effect, but also exposes many problems simultaneously.The large-area laying of such as geomembrane can make gas pile up under film cannot to discharge, to a certain degree can make geomembrane explosion, being commonly called as " blowing out " when running up to.In order to avoid the generation of " blowing out " phenomenon, engineering also there are many solve scheme, wherein apply outlet valve because of its simple economy, be most widely used.
There are many scholars successively to devise exhaust plant under geomembrane for this reason, principle is wherein similar substantially, namely the component of a similar one way valve is utilized, under making film, air pressure is greater than soil pressure and hydraulic pressure on film, valve opening, and gas is discharged, air pressure reduces subsequently, valve closing, due to the application of one way valve, current can not flow into.But from the engineer applied of reality, the effect of these outlet valves is not very desirable, and geomembrane is still easy to break because of " blowing out ", and reservoir leakage does not still well solve.And wherein more crucial problem is, in the past in result of design, an outlet valve only has an air inlet, and because coating under film is fine and close, the often more difficult transfer of gas, is thus " blow out " in a place, is also difficult to gas is entered in outlet valve.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide exhaust decompression device under a kind of geomembrane.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
Exhaust decompression device under geomembrane of the present invention, comprising: water layer 1, soil layer 2, geomembrane 3, soil layer 4, exhaust plant comprise superfine soil layer 5, superfine grains of sand layer 6, the medium sandy gravel stratum of hard 7, the large sandy gravel stratum of hard 8, medium even rock layer 9.
Operating principle of the present invention is as follows: the present invention is mainly used in the dam body of antiseep, is geomembrane 3 under water, lays exhaust plant in the centre of geo membrane layers 3 between two soil layers 2,4.Exhaust plant structure composition be respectively from top to bottom superfine soil layer 5, superfine grains of sand layer 6, the medium sandy gravel stratum of hard 7, the large sandy gravel stratum of hard 8, medium even this structure of rock layer 9 major function be by geomembrane (3) lower floor gases at high pressure by exhaust plant clap to upper strata soil layer.The large sandy gravel stratum of hard 8 and medium even rock layer 9 achieve the gas collection of gas and the support of exhaust plant, the medium sandy gravel stratum 7 of superfine grains of sand layer 6, hard realizes the upwards dispersion of gas and exhaust passage, superfine soil layer 5 achieves the capping to sand bed, prevents the downward seepage of steam above.
Compared with prior art, the invention has the beneficial effects as follows:
Outlet valve uses multiple air inlet port, can make to be arranged in the gas do not existed together and all can enter exhaust plant, fine earth layer is equipped with in gas outlet, effectively can discharge gas and stop external water stream to enter, and arranging of rigid filter film can effectively prevent entering of soil and cause outlet valve to block, exhaust efficiency under film can be strengthened on the whole, effectively reduce geomembrane and " blow out ".
Accompanying drawing explanation
Fig. 1 is exhaust decompression structure drawing of device under geomembrane.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
Exhaust decompression device under geomembrane of the present invention, comprising: water layer 1, soil layer 2, geomembrane 3, soil layer 4, exhaust plant comprise superfine soil layer 5, superfine grains of sand layer 6, the medium sandy gravel stratum of hard 7, the large sandy gravel stratum of hard 8, medium even rock layer 9.
Operating principle of the present invention is as follows: the present invention is mainly used in the dam body of antiseep, is geomembrane 3 under water, lays exhaust plant in the centre of geo membrane layers 3 between two soil layers 2,4.Exhaust plant structure composition be respectively from top to bottom superfine soil layer 5, superfine grains of sand layer 6, the medium sandy gravel stratum of hard 7, the large sandy gravel stratum of hard 8, medium even this structure of rock layer 9 major function be by geomembrane (3) lower floor gases at high pressure by exhaust plant clap to upper strata soil layer.The large sandy gravel stratum of hard 8 and medium even rock layer 9 achieve the gas collection of gas and the support of exhaust plant, the medium sandy gravel stratum 7 of superfine grains of sand layer 6, hard realizes the upwards dispersion of gas and exhaust passage, superfine soil layer 5 achieves the capping to sand bed, prevents the downward seepage of steam above.
The undeclared part related in the present invention is same as the prior art or adopt prior art to be realized.
Claims (4)
1. exhaust decompression device under a geomembrane, comprise: water layer (1), soil layer (2), geomembrane (3), soil layer (4), exhaust plant comprise superfine soil layer (5), superfine grains of sand layer (6), the medium sandy gravel stratum of hard (7), the large sandy gravel stratum of hard (8), medium even rock layer (9), it is characterized in that: described exhaust plant composition structure; Described gas collection layer; Described exhaust level.
2. exhaust plant according to claim 1 composition structure, is characterized in that: described exhaust plant composition be respectively from top to bottom superfine soil layer (5), superfine grains of sand layer (6), the medium sandy gravel stratum of hard (7), the large sandy gravel stratum of hard (8), medium even rock layer (9) this structure major function be that geomembrane (3) lower floor gases at high pressure are clapped to upper strata soil layer by exhaust plant.
3. gas collection layer according to claim 1, is characterized in that: described gas collection layer is made up of the large sandy gravel stratum of hard (8) and medium even rock layer (9), achieves the gas collection of gas and the support of exhaust plant.
4. exhaust level according to claim 1, is characterized in that: described exhaust level is made up of superfine grains of sand layer (6) and the medium sandy gravel stratum of hard (7), realizes the upwards dispersion of gas and exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420255.9A CN104452671A (en) | 2013-09-15 | 2013-09-15 | Downward exhaust pressure reducing device of geomembrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420255.9A CN104452671A (en) | 2013-09-15 | 2013-09-15 | Downward exhaust pressure reducing device of geomembrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104452671A true CN104452671A (en) | 2015-03-25 |
Family
ID=52899371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310420255.9A Pending CN104452671A (en) | 2013-09-15 | 2013-09-15 | Downward exhaust pressure reducing device of geomembrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104452671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869082A (en) * | 2017-02-16 | 2017-06-20 | 张维国 | Hydraulic Projects antiseepage method for exhausting |
| CN109555084A (en) * | 2019-01-17 | 2019-04-02 | 中国电建集团华东勘测设计研究院有限公司 | Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure and its construction method |
-
2013
- 2013-09-15 CN CN201310420255.9A patent/CN104452671A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869082A (en) * | 2017-02-16 | 2017-06-20 | 张维国 | Hydraulic Projects antiseepage method for exhausting |
| CN106869082B (en) * | 2017-02-16 | 2022-08-12 | 张维国 | Seepage-proofing exhaust method for water engineering |
| CN109555084A (en) * | 2019-01-17 | 2019-04-02 | 中国电建集团华东勘测设计研究院有限公司 | Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure and its construction method |
| CN109555084B (en) * | 2019-01-17 | 2023-09-12 | 中国电建集团华东勘测设计研究院有限公司 | Reservoir bottom geomembrane impermeable-laid gas collection and exhaust structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |