CN214883903U - Landfill yard sealing system with large space for water drainage and air guide - Google Patents

Abstract

The utility model relates to the technical field of landfill facilities, in particular to a landfill yard closing system with large space drainage and air guide, which comprises a bentonite waterproof blanket, a first geotextile, a root puncture resistant geomembrane, a second geotextile, a planting clay layer and a damage resistant ecological protection pad which are arranged from bottom to top, and also comprises a geogrid positioned at the bottom layer, wherein a high tensile filter plate is laid on the upper layer of the geogrid in an inverted manner, and a high tensile filter plate is laid on the upper layer of the second geotextile; the high-tensile-strength filter arrangement plate comprises a plate body, wherein bulges are distributed on the plate body, and channels are arranged among the bulges; the utility model has the advantages that the MDS high tensile filtering and draining plate is arranged to replace the traditional three-dimensional composite draining plate, so that the water guiding and draining gas is more smooth, the compressive strength is improved, and the multi-layer anti-seepage effect is realized; not only uses environment-friendly materials, but also arranges a planting clay layer on the top layer to plant vegetation, thereby saving energy and protecting environment.

Description

Landfill yard sealing system with large space for water drainage and air guide

Technical Field

The utility model relates to a landfill facility technical field, concretely relates to landfill yard closing system who has big space drainage and air guide.

Background

In recent years, due to the continuous progress of human society, scientific technology has been advanced rapidly, and industry and agriculture have been developed rapidly, but with the following ecological environmental problems: the treatment of waste materials such as industrial waste liquid, domestic garbage and the like becomes another problem for people. The landfill method is a waste treatment method which is easy to implement and low in cost, and can treat various types of waste, so that a plurality of landfill sites appear in the society at present.

The sealing system is an important component of the landfill, and must integrate the functions of drainage, air exhaust and seepage prevention; but the system of closing a yard of landfill that appears in the society at present, what adopted usually is that three-dimensional composite drainage network carries out drainage and air guide, and drainage network belongs to one-way drainage, and the later stage leads to the adverse slope phenomenon because the subsidence of rubbish heap body very easily, makes the unable quick discharge of water on upper strata, and drainage network belongs to the drainage material in aperture in addition, and directly covers on native rubbish heap body, and is very easy because impurity in the landfill gas adsorbs in the space, leads to exhaust passage to block up, influences the exhaust effect.

Besides, present landfill yard closing system majority is for designing to the landfill yard of rubbish, and the processing that industry was useless admittedly (danger is useless) also often adopts the mode of landfill, the utility model discloses a closing system is not only limited to the landfill yard of rubbish, also is applicable to the useless landfill yard of industry danger.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a landfill yard sealing system with large space drainage and air guide.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a landfill yard closure system that has big space drainage and air guide, includes the bentonite waterproof blanket, first geotechnological cloth, root resistance hole geomembrane, second geotechnological cloth, plants clay layer and the ecological protection of loss pad that set up from bottom to top, still includes the geogrid that is located the bottom, the high tensile row board of straining is laid to the upper strata handstand of geogrid, the high tensile row board of straining is laid to the upper strata of second geotechnological cloth.

Preferably, the high tensile filter row plate comprises a plate body, wherein protrusions are distributed on the plate body, and channels exist among the protrusions.

Preferably, a welding edge is reserved on the plate body.

Preferably, the protrusion is a truncated cone-shaped cover body.

Preferably, the arrangement mode of the bulges is rectangular, regular hexagon or annular.

Preferably, the landfill site sealing system with large-space drainage and air guide further comprises an exhaust pipe, the exhaust pipe is arranged in the landfill area, penetrates through the landfill area and the landfill site sealing system from bottom to top and is higher than the surface of the landfill site sealing system, an air hole is formed in the drain pipe, and the air hole is communicated with a channel between the bulges.

The utility model provides a landfill yard closing system with large space drainage and air guide, wherein the upper layer of the landfill area is a bidirectional plastic geogrid which mainly plays a role in strengthening the structural stability and overcomes the uneven settlement; the bentonite waterproof blanket on the upper part of the geogrid adopts a double-lock edge structure at the bottom layer of the bentonite waterproof blanket, so that the problem of seam leakage of the traditional waterproof blanket can be thoroughly solved, and the sealing performance and the anti-seepage effect of the waterproof blanket are better; the first MDS high-tensile filter row plate is arranged between the geogrid and the bentonite waterproof blanket in an inverted mode, the plate body of the MDS high-tensile filter row plate is prepared by co-extruding and compounding high-density polyethylene and low-density polyethylene, the MDS high-tensile filter row plate has high bearing capacity and compressive strength, a protrusion structure is arranged on the MDS high-tensile filter row plate, different protrusion arrangement modes can be selected according to the requirement of a landfill site, and the reason that the first MDS high-tensile filter row plate is arranged in an inverted mode is that a channel between protrusions on the filter row plate can be communicated with an air hole in an exhaust pipe to play a role in guiding and discharging; the upper part of the first MDS high-tensile filter row plate is provided with two layers of polyester fiber geotextile, the geotextile mainly plays a role in filtration, the geotextile is made of filament non-woven materials, the water filtration effect is good, and meanwhile, the geotextile is ageing-resistant, corrosion-resistant and low in creep property. A layer of HDPE root-resistant geomembrane is laid between the two layers of polyester fiber geotextiles, so that filtration is guaranteed, and the failure of a filtration system caused by the penetration of the geomembrane by the roots of vegetation after the vegetation planted on the upper layer grows can be avoided; the upper layer of the polyester fiber geotextile is a second MDS high tensile strength filter discharge plate which is arranged in the forward direction, and the reason for the forward arrangement is that waste liquid infiltrated into the upper layer can directly fall onto the plate body, so that the waste liquid is discharged from the plate body to play a role in drainage guide; a planting clay layer is laid on the second layer of the filter row plate, so that green vegetation can be directly planted, the ecological environment is protected, and a damage-resistant ecological protection pad is laid on the upper layer of the planting clay layer to protect the planted green vegetation; still include the air duct, the air duct runs through landfill district and whole sealing system and is higher than sealing system surface, and the waste gas in the system can get into the gas pocket on the drain pipe through straining the passageway between the row board arch, and the blast pipe end can insert the methane-generating pit and handle waste gas.

It is worth mentioning that the utility model discloses an application range not only limits to the landfill yard, can also apply to the industry and give up (danger is useless) the landfill yard admittedly.

Compared with the prior art, the beneficial effects of the utility model are that:

1 the system can rapidly and smoothly guide and collect the waste liquid into a drainage pipeline through the arrangement of the high-tensile filtering and discharging plate, the waste liquid in the sealing system can be guided and discharged in time, the water content of a pile body is reduced, and water and soil loss is avoided; 2 traditional three-dimensional composite drainage network belongs to the drainage material of aperture, and directly covers on native rubbish heap body, very easily because impurity in the landfill gas adsorbs in the space, leads to the exhaust passage to block up, influences the exhaust effect, this is because organic matter anaerobic decomposition in places such as the landfill yard that need be used to the landfill yard produces methane and carbon dioxide gas. Methane is lighter than air and is insoluble in water; in contrast, carbon dioxide is heavier than air and is readily soluble in water. Carbon dioxide is often in the bottom layer and does not flow easily, and methane is in the upper layer and tends to move vertically, thus causing the amount of methane emitted to the atmosphere to be greater than the amount of carbon dioxide. Lateral migration of methane occurs if this vertical motion is restricted. Because of the relatively small methane molecule, it can diffuse rapidly along the shortest path, through porous soils, highly permeable sands, gravels, cavities formed by long-term accumulation of silt, clay, or migrate to sufficiently distant places along utilities and drainage channels. The system adopts the inverted buckle type filtering and exhausting plate to be attached to the exhaust pipe during exhaust to form a chimney effect, thereby achieving the gathering type gas guiding and exhausting effect, rapidly and efficiently guiding and exhausting the methane, and avoiding the risk; 3 besides the geomembrane and the geotextile, the high-pressure filtering and discharging plate also has the function of assisting seepage prevention, and can realize multilayer seepage prevention; 4, a layer of plastic geogrid is added above the landfill body, the biaxial tension plastic geogrid has great tensile strength in the longitudinal direction and the transverse direction, the structure can provide a more effective ideal interlocking system for bearing and diffusing in the landfill body, the phenomena of settlement, cracks and the like caused by seepage, construction, earthquake and the like are solved, and the interfacial friction coefficient is increased; 5, the geomembrane is a root-puncture-resistant HDPE geomembrane, the filtering and exhausting plates are root-blocking filtering and exhausting plates, and a double-layer root-blocking system is adopted to ensure greening safety; 6, the production process of all materials of the system is physical reaction, no harmful substance is generated, production, transportation, construction and the like are not influenced by environmental protection policies, the construction period is not influenced, goods are not continuously delivered, and goods supply is timely; 7, the system is simple in construction, secondary goods dumping and large machinery are not needed, and the construction period is saved; 8 strain the sealed hot melt welding of row board adoption double track welding, compare in the water drainage network that prior art used and use the strapping to bind, the connectivity is stronger, can not lead to local damage because of differential settlement, leads to drainage, exhaust passage to block up, produces the potential safety hazard.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the high tensile strength filter row plate of the present invention;

FIG. 3 is an arrangement of the frustums of the MDS high tensile filter row plate according to the first embodiment;

FIG. 4 is an arrangement of the frustums of the MDS high tensile filter row plate of example two;

FIG. 5 is an arrangement of the cones of the MDS high tensile filter row plate in the third embodiment;

reference numeral 1 indicates a landfill region; 2, geogrid; 3 high tensile filtering plate; 31 a projection; 4, a bentonite waterproof blanket; 5, first geotextile; 6, root-resistant geomembrane; 7, second geotextile; 8 planting a clay layer; 9, a damage-tolerant ecological protection pad; 10 exhaust pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example one

The embodiment provides a landfill yard system of closing a yard that has big space drainage and air guide, including the waterproof blanket of bentonite 4, first geotechnological cloth 5, root resistance geomembrane 6, second geotechnological cloth 7, planting clay layer 8 and the ecological protection of resistant loss pad 9 that set up from bottom to top, its characterized in that: including the geogrid 2 that is located the bottom, high tensile row board 3 is strained in handstand laying of upper strata of geogrid 2, and high tensile row board 5 is strained to upper strata of second geotechnological cloth 5.

The high-tensile-strength filter arrangement plate 3 comprises a plate body, protrusions 31 are distributed on the plate body, the protrusions 31 and the plate body are integrally formed, the protrusions 31 are truncated cone-shaped cover bodies, the protrusions 31 are distributed in a rectangular mode, as shown in fig. 3, channels exist among the protrusions 31, and welding edges which are convenient for welding construction work are reserved on the plate body 3.

The landfill site sealing system with large space water and air discharging provided by the embodiment further comprises an exhaust pipe 10, the exhaust pipe 10 is arranged in the landfill area, penetrates through the landfill area and the landfill site sealing system from bottom to top and is higher than the surface of the landfill site sealing system, an air hole is formed in the exhaust pipe 10, and the air hole is communicated with a channel between the protrusion 31.

When the exhaust gas is guided and exhausted, the exhaust gas in the system enters the air holes on the side wall of the exhaust pipe 10 in the channels between the protrusions 31 of the first MDS high tensile filter exhaust plate 3 which is arranged in an inverted manner, and then is exhausted from the exhaust pipe 10; when leading the waste liquid of arranging 8 infiltration in surperficial vegetation soil horizon, the waste liquid can concentrate and collect on second floor MDS high tensile filters row board 3, can be followed by high tensile and strain row board 3 and lead to the drainage pipe with the waste liquid and discharge the waste liquid.

Example two

This embodiment is substantially the same as the first embodiment, except that: the arrangement of the protrusions 31 on the filter row plate 3 is a regular hexagon, as shown in fig. 4.

The principle of guiding and discharging the waste gas and liquid in this embodiment is the same as that provided in the first embodiment, and is not described herein again.

EXAMPLE III

The present embodiment is substantially the same as the first and second embodiments, and the difference is that: the arrangement of the protrusions 31 on the filter row plate 3 is annular, as shown in fig. 5.

The principle of guiding and discharging the waste gas and liquid in this embodiment is the same as that provided in the first and second embodiments, and is not described herein again.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (6)

1. The utility model provides a landfill yard closing system that has big space drainage and air guide, includes bentonite waterproof blanket (4), first geotechnological cloth (5), root resistance and punctures geomembrane (6), second geotechnological cloth (7), planting clay layer (8) and the ecological protection of resistant damage pad (9) that set up from bottom to top, its characterized in that: including geogrid (2) that are located the bottom, high tensile strain row board (3) are laid to the upper strata handstand of geogrid (2), high tensile strain row board (3) are laid to the upper strata of second geotechnique's cloth (7).

2. The landfill yard system with large space drainage and gas guide of claim 1, wherein: high tensile is strained and is arranged board (3) including the plate body, arrange arch (31) on the plate body, there is the passageway between arch (31).

3. The landfill yard system with large space drainage and gas guide of claim 2, wherein: a welding edge is reserved on the plate body.

4. The landfill yard system with large space drainage and gas guide of claim 2, wherein: the bulge (31) is a truncated cone-shaped cover body.

5. The landfill yard system with large space drainage and gas guide of claim 2, wherein: the arrangement mode of the bulges (31) is rectangular, regular hexagonal or annular.

6. The landfill yard system with large space drainage and gas guide of claim 1, wherein: still include blast pipe (10), blast pipe (10) set up in landfill district (1), run through landfill district (1) and seal system and be higher than seal system surface from lower supreme, be equipped with the gas pocket on blast pipe (10), the passageway intercommunication between gas pocket and arch (31).

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