CN209555884U - Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure - Google Patents
Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure Download PDFInfo
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- CN209555884U CN209555884U CN201920080892.9U CN201920080892U CN209555884U CN 209555884 U CN209555884 U CN 209555884U CN 201920080892 U CN201920080892 U CN 201920080892U CN 209555884 U CN209555884 U CN 209555884U
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- gas collection
- geomembrane
- bottom storehouse
- seepage
- chamber
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Abstract
The utility model relates to a kind of bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structures.The purpose of this utility model is the exhausting problem for solving rhone under bottom storehouse soil film film and being vented the geomembrane under unsmooth or film without drainage system, eliminates geomembrane inflatable risk.The technical solution of the utility model is: a kind of bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure, it is characterised in that: gas collection cabinet and lower support layer are arranged on the basis of bottom storehouse；There is chamber in the plenum chamber body, the lower end of gas collection cabinet is formed with a circle support ring, and support ring upper surface is formed with a circle pneumatic trough, and pneumatic trough is connected to the intracorporal chamber of plenum chamber through exhaust pipe, gas collection top of the box is equipped with the venthole being connected to its inner cavity chamber, is connected to air ventilation one-way valve on venthole；The support ring thickness of the lower support thickness degree and gas collection cabinet is close, and lower support layer upper surface and support ring upper surface cover geomembrane, which is anchored in the side wall of the gas collection cabinet.
Description
Technical field
The utility model relates to a kind of bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structures.Suitable for be immersed in level of dead water with
Lower relatively flat bottom storehouse is subsoil under film, particular without the reservoir seepage-proofing of setting drainage system using geomembrane anti-seepage
Engineering.
Background technique
It is considered as inflatable jacking when bottom storehouse uses geomembrane as main leakage preventing structure and destroys problem.For using " preceding
The geomembrane anti-seepage system of stifled heel row " theory setting can also serve as exhaust system since perfect drainage system is arranged at bottom, and one
As exhaust facility is not set specially.But occur some engineerings at present, although being provided with rhone in geomembrane bottom, also go out
The case where showing inflatable jacking and destroying geomembrane.When soil body drainage performance is poor under film, when in a saturated state, the draining of setting
Groove is occupied by water body, since gas has the characteristic of floating in water, be can not be successfully and is passed through drainage groove together with water
It excludes and, geomembrane top hydraulic pressure relatively small place concentration relatively high to landform, forms bulge.When bulge reaches certain
Size (gas gradually increases or drawdown gas pressure accordingly reduces, volume expansion and further increase bulge) will
Geomembrane is caused to destroy.
In addition there is also some engineerings, bottom storehouse is not suitable for that drainage system is arranged, such as when bottom storehouse geomembrane is to extend seepage paths
Auxiliary seepage proof system when.It is generally timely by being laid with geomembrane for the geomembrane anti-seepage structure of not set drainage system
The mode of ballast is set, gas under film is discharged.But this treatment measures can not completely exclude bottom gas thoroughly, it is special
It is not the gas being trapped in soil body hole.Reservoir filling, library water by geomembrane or library bank to leaking under film, the soil body under film
In gas float, generate bulge under film, thus to geomembrane formed jacking.When basis is not cleaned out or filling body
When inside there is humus in itself, biogas will be generated under water for a long time, also will form bulge jacking geomembrane.
Other than draining, exhaust trench check (non-return) valve can also be arranged, but from the foregoing in discharge structure on geomembrane at present
As can be seen that drainage air drain is in the presence of the risk that may be blocked and lose degassing function.And check (non-return) valve must be in bottom air pressure
More than scavenging action can just occur under the effect of top hydraulic pressure, this function of just telling under limiting condition is in actual motion
In structural reliability is required very high, occur being vented a possibility that unsmooth also phase in face of the bottom storehouse geomembrane of service condition complexity
To larger.
Utility model content
Technical problem to be solved by the utility model is: in view of the above problems, it is anti-to provide a kind of bottom storehouse geomembrane
Bedding gas collection exhaust structure is seeped, is vented the geomembrane under unsmooth or film without drainage system to solve rhone under bottom storehouse soil film film
Exhausting problem, eliminate geomembrane inflatable risk.
The technical scheme adopted by the utility model is a kind of bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure, special
Sign is: gas collection cabinet and lower support layer being arranged on the basis of bottom storehouse；
There is chamber, the lower end of gas collection cabinet is formed with a circle support ring, and support ring upper surface is formed in the plenum chamber body
One circle pneumatic trough, pneumatic trough are connected to the intracorporal chamber of plenum chamber through exhaust pipe, and gas collection top of the box is equipped with and is connected to its inner cavity chamber
Venthole, be connected to air ventilation one-way valve on venthole；
The support ring thickness of the lower support thickness degree and gas collection cabinet is close, lower support layer upper surface and support ring
Upper surface covers geomembrane, which is anchored in the side wall of the gas collection cabinet.
The geomembrane facilitates the gradient that gas below is assembled to the gas collection cabinet.
The earthwork water drain net for covering the pneumatic trough is equipped between the geomembrane and the support ring and lower support layer
Pad.
Non-fine concrete is filled in the pneumatic trough.
The air ventilation one-way valve has valve body, has valve chamber in valve body, and valve body lower end is provided with the air inlet being connected to valve chamber,
Valve chamber is built-in with the seal that can block air inlet, offers on body wall close in the external side wall of several communicating valves and valve chamber
Seal inlet opening and the gas vent of body upper area.
The outside orifice position of inlet opening and gas vent is lower than its inside orifice position on the valve body.
The inner wall of valve chamber above the seal is equipped with several for limiting the bail of seal range of upward movement.
The air ventilation one-way valve is connected to the venthole on the gas collection cabinet through steel pipe.
A kind of construction method of the bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure, which is characterized in that steps are as follows:
One or more antiseepages region is arranged on the basis of bottom storehouse for bottom storehouse foundation excavation；
Lower support layer is filled on the basis of bottom storehouse and is laid with geomembrane, the centre bit in antiseepage region in lower support layer surface
Gas collection cabinet is installed, the low formation of middle position high surrounding of the lower support layer upper surface in antiseepage region is vented the gradient；
Non-fine concrete is backfilled in the pneumatic trough of gas collection cabinet；
One layer of the pneumatic trough upper berth soil engineering drainage gauze pad of gas collection cabinet；
The geomembrane is covered on soil engineering drainage gauze pad, and the geomembrane is anchored on the side wall of gas collection cabinet；
Air ventilation one-way valve is installed on the venthole of gas collection cabinet.
The air ventilation one-way valve is by penstock installation on the venthole of the gas collection cabinet.
The beneficial effects of the utility model are: the utility model is laid with using the height and geomembrane of gas collection cabinet itself
The gradient of formation forms a low pressure point in plenum chamber body, increases power of the gas to gas collection bin movement.
The utility model improves air ventilation one-way valve and opens pressure using the head difference at the top of geomembrane and at the top of plenum chamber body
Power, and the requirement of corresponding control precision is suitably reduced, the reliability of non-return valve exhaust effectively improves；By under air ventilation one-way valve
Portion installs steel pipe additional, and hydraulic pressure and air ventilation one-way valve top at the top of geomembrane can be further increased by being connect by steel pipe with gas collection cabinet
Head difference, further increase non-return valve exhaust reliability and geomembrane operation safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1.
Fig. 2 is the structural schematic diagram of air ventilation one-way valve in embodiment 1.
Fig. 3 is the structural schematic diagram of valve body in embodiment 1.
Fig. 4 is the cross-sectional view in embodiment 1.
Fig. 5 is the schematic diagram of seal in embodiment 1.
Fig. 6 is the structural schematic diagram of embodiment 2.
Specific embodiment
As shown in Figure 1, the present embodiment is a kind of 3 impervious blanket gas collection exhaust structure of bottom storehouse geomembrane, bottom storehouse basis 1 is divided
At multiple antiseepage regions, lower support layer 2 is filled on bottom storehouse basis 1 and gas collection cabinet is set in the center in antiseepage region
5。
In the present embodiment gas collection cabinet 5 be one poured as armored concrete made of, back-off four square box, plenum chamber
There is chamber in body 5, the lower end of the gas collection cabinet is formed with a circle support ring 501, and the upper surface of support ring 501 is formed with a circle collection
Air drain 6, pneumatic trough 6 are connected to the chamber in plenum chamber body 5 through the exhaust pipe 7 in gas collection cabinet 5, be equipped at the top of gas collection cabinet 5 with
The venthole 502 of its inner cavity chamber connection.
The thickness of this example middle and lower part support layer 2 and 501 thickness of support ring of gas collection cabinet 5 are close, in order to exclude gas
Unobstructed, 2 upper surface of lower support layer in antiseepage region is filled into antiseepage region middle position is high, surrounding is low elevations such as non-
Plane forms the exhaust gradient higher closer to 5 height of gas collection cabinet of antiseepage regional center in 2 upper surface of lower support layer,
It is vented the gradient and is not less than 1%.
Non-fine concrete is backfilled in the present embodiment in the pneumatic trough 6 of gas collection cabinet 5, non-fine concrete is backfilled to and supports
501 upper surface of ring flushes, and one layer of soil engineering drainage gauze pad 4 is covered on pneumatic trough 6, the laying range of soil engineering drainage gauze pad 4 is in not shadow
It is more as big as possible under conditions of ringing the anchoring of geomembrane 3 and antiseepage, in favor of the gas around guidance.In pneumatic trough 6 without sand
Concrete is filled with pneumatic trough, also functions to the effect of exhaust, will pass through nothing when such gas is to this pneumatic trough periphery
Hole and pipe inside sand concrete, which are discharged in cabinet, to be gone.
It is laid with geomembrane 3 in 2 upper surface of lower support layer and 501 upper surface of support ring in this example, geomembrane 3 is anchored in collection
The side wall of gas tank body 5.Since 2 upper surface of lower support layer has the exhaust gradient, it is covered in the geotechnique of 2 upper surface of lower support layer
Film 3 facilitates the exhaust gradient that gas below is assembled to the gas collection cabinet 5 being located among antiseepage region.
Air ventilation one-way valve 8 is installed on the venthole 502 at 5 top of gas collection cabinet in the present embodiment, as shown in Figure 2 to 4,
Air ventilation one-way valve 8 has valve body, and valve body is divided into bottom body portion 801 and top dirtproof cover 802, by corrosion resistance outside valve body
Stainless steel material manufacture.The top of bottom body portion 801 is equipped with conical cavity, and the bottom of bottom body portion 801 is equipped with
It is connected to the air inlet 9 of conical cavity；There is cylindrical cavity, if the side wall of top dirtproof cover 802 is equipped in top dirtproof cover 802
The middle part of top dirtproof cover 802 is arranged in the dry inlet opening 13 being connected to its interior cylindrical cavity, gas vent 14, inlet opening 13, arranges
The top of top dirtproof cover 802 is arranged in stomata 14.Top dirtproof cover 802 and lower body portion are connected by bolt 15, on
The conical cavity split in cylindrical cavity and bottom body portion 801 in portion's dirtproof cover 802 forms valve chamber.
This example is placed with seal 10 in the valve chamber in valve body, and the top of the seal is the circle for being slightly less than cylindrical cavity
Cylinder, the lower end of seal 10 are centrum compatible with conical cavity.10 material of seal is that Nantural non-toxic rubber adds bottom
Stainless-steel sheet gasket 17 forms, and the diameter of stainless-steel sheet gasket 17 is slightly less than conical cavity bottom size, and has enough
Rigidity, guarantee under design head, steel plate does not occur obviously to deform (see Fig. 5).
Density and the size design of 10 material of seal, which need to jack up under design load, floats, design load and plenum chamber
The top of body 5 is related with the height difference in 3 face of surrounding geomembrane, and the limit is not more than its height difference, it is proposed that takes water corresponding to 0.2 times of height difference
Head, the design load floated as 10 jacking of seal.
The concrete construction method of the present embodiment is as follows:
Bottom storehouse basis 1 is excavated, and multiple antiseepage regions are arranged on bottom storehouse basis 1；
Lower support layer 2 is filled on bottom storehouse basis 1 and in 2 surface of lower support layer laying geomembrane 3, antiseepage region
Gas collection cabinet 5 is arranged in heart position, and the low formation of middle position high surrounding of 2 upper surface of lower support layer in antiseepage region is vented slope
Degree；
Non-fine concrete is backfilled in the pneumatic trough 6 of gas collection cabinet 5；
One layer of 6 upper berth of the pneumatic trough soil engineering drainage gauze pad 4 of gas collection cabinet 5；
Geomembrane 3 is laid with to 501 upper surface of support ring and covers earthwork water drain net pad 4, and the geomembrane is anchored at collection
On the side wall of gas tank body 5；
Air ventilation one-way valve 8 is installed on the venthole 502 of gas collection cabinet 5.
Embodiment 2: as shown in fig. 6, the present embodiment is substantially the same manner as Example 1, difference is passed through in this present embodiment
Air ventilation one-way valve 8 is connected on gas collection cabinet 5 through steel pipe 18, the going out through the connection of steel pipe 18 top of air inlet 9 of the air ventilation one-way valve 8
Stomata 502.
Claims (8)
1. a kind of bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure, it is characterised in that: plenum chamber is arranged on bottom storehouse basic (1)
Body (5) and lower support layer (2)；
There is chamber, the lower end of gas collection cabinet (5) is formed with a circle support ring (501), support ring in the gas collection cabinet (5)
(501) upper surface is formed with a circle pneumatic trough (6), and pneumatic trough (6) is through the chamber in exhaust pipe (7) connection plenum chamber body (5), gas collection
It is equipped with the venthole (502) being connected to its inner cavity chamber at the top of cabinet (5), is connected to air ventilation one-way valve (8) on venthole (502)；
Lower support layer (2) thickness and support ring (501) thickness of gas collection cabinet (5) are close, table on lower support layer (2)
Face and support ring (501) upper surface covering geomembrane (3), the geomembrane are anchored in the side wall of the gas collection cabinet (5).
2. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 1, it is characterised in that: the geomembrane
(3) facilitate the gradient that gas below is assembled to the gas collection cabinet (5).
3. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 2, it is characterised in that: the geomembrane
(3) the soil engineering drainage gauze pad for covering the pneumatic trough (6) is equipped between the support ring (501) and lower support layer (2)
(4)。
4. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 2 or 3, it is characterised in that: the collection
Non-fine concrete is filled in air drain (6).
5. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 1, it is characterised in that: the exhaust stops
Inverse valve (8) have valve body, have valve chamber in valve body, valve body lower end is provided with the air inlet (9) being connected to valve chamber, and valve chamber is built-in with energy
The seal (10) of air inlet (9) is blocked, the seal in the external side wall of several communicating valves and valve chamber is offered on body wall
(10) inlet opening (13) of upper area and gas vent (14).
6. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 5, it is characterised in that: on the valve body
The outside orifice position of inlet opening (13) and gas vent (14) is lower than its inside orifice position.
7. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 5 or 6, it is characterised in that: described close
The inner wall of valve chamber above envelope body (10) is equipped with several for limiting the bail (12) of seal (10) range of upward movement.
8. bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure according to claim 1 or 5, it is characterised in that: the row
Gas check (non-return) valve (8) is connected to the venthole (502) on the gas collection cabinet (5) through steel pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920080892.9U CN209555884U (en) | 2019-01-17 | 2019-01-17 | Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920080892.9U CN209555884U (en) | 2019-01-17 | 2019-01-17 | Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209555884U true CN209555884U (en) | 2019-10-29 |
Family
ID=68308097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920080892.9U Active CN209555884U (en) | 2019-01-17 | 2019-01-17 | Bottom storehouse geomembrane anti-seepage bedding gas collection exhaust structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209555884U (en) |
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2019
- 2019-01-17 CN CN201920080892.9U patent/CN209555884U/en active Active
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