CN111424726A - Landfill cover film partition sealing system and partition sealing method - Google Patents

Abstract

The invention discloses a landfill covering film partition sealing system and a partition sealing method. The partition sealing system includes a landfill area, and the landfill area is provided with at least one garbage partition ditch, so as to divide the two sides of the garbage partition ditch into two independent In the garbage dump body, the garbage partition groove is provided with a cover film inserted along the height direction thereof, and the cover film covers the top surfaces of the two garbage dump bodies respectively. This arrangement provides a new method of covering membrane partitions and sealing, which can quickly partition the stack, and cooperate with the landfill gas collection method of gas collection under the membrane to separate the landfill gas between each partition, which can quickly collect gas. The area is controlled, local damage will not affect the overall landfill gas concentration, effectively improving the efficiency of landfill gas collection, and the cover film is sealed in partitions, and the area of the cover film in each partition becomes smaller, so that the cover film is not easily opened by the wind, and the cover film is improved. Airtight effect, reduce safety hazards.

Description

A kind of landfill covering film partition sealing system and partition sealing method

technical field

The invention relates to the technical field of landfills, and more particularly, to a landfill covering film partition sealing system and a partition sealing method.

Background technique

The existing landfill gas collection method is the collection of horizontal and vertical pipelines in the pile body, and the method of laying a covering film on the surface of the pile body and pressing it with cement blocks. However, when the cover film is damaged, it will cause air to enter the entire area under the film, reducing the concentration of landfill gas. In addition, the pressure of the cement block on the cover film is small. Due to the large area of the landfill, the area of the cover film is correspondingly large. The wind speed is very large during the elevation landfill, and the cover film is prone to blowing, resulting in the cover film being lifted. In the case of opening, the airtightness of the cover film is poor, which reduces the concentration of landfill gas and poses a safety hazard.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a landfill covering film partition sealing system and partition sealing method, so as to solve the above-mentioned problems in the background technology, carry out partition sealing for the landfill garbage heap, and effectively improve the landfill gas collection efficiency , and the cover film is sealed in partitions, so that the cover film is not easy to be opened by the wind.

The purpose of this invention is to realize through the following technical solutions:

The invention provides a landfill covering film partitioned closed system, including a landfill area, and the landfill area is provided with at least one garbage partition ditch, so as to divide the two sides of the garbage partition ditch into two independent garbage heaps The garbage partition groove is provided with a cover film inserted along its height direction, and the cover film covers the top surfaces of the two garbage dump bodies respectively.

Preferably, the garbage partition groove is a square groove.

Preferably, the bottom surface and the side surface of the garbage partition ditch are covered with the cover film.

Preferably, there are two cover films arranged overlappingly, the first ends of the two cover films are located on the bottom surface of the garbage partition groove, and the second ends of the two cover films extend out of the garbage partition groove And stretch and tile the garbage piles on both sides respectively, so as to cover the top surfaces of the two garbage piles.

Preferably, the first ends of the two cover films are fixedly connected together.

Preferably, the first ends of the two cover films are fixedly connected by monorail welding.

Preferably, the height H of the garbage partition ditch is 1.8m-2.2m, and the width W is 0.8m-1.2m.

Preferably, the garbage partition ditch further includes landfill garbage filled on the cover film to compress the cover film.

Preferably, the cover film is a high density polyethylene film.

The present invention also provides a partition sealing method based on the above-mentioned landfill covering film partition sealing system, comprising the following steps: after compacting and leveling the landfill area, excavating the landfill area at least one garbage partition ditch; put the covering film into the bottom of the garbage partition ditch, and spread it along the bottom surface and side surface of the garbage partition ditch; fill the landfill garbage into the garbage partition ditch, and compact and level it; The cover film is stretched and laid flat on both sides of the garbage heaps to cover the top surfaces of the two garbage heaps.

In the technical solution provided by the present invention, a landfill covering film partition sealing system includes a landfill area, and the landfill area is provided with at least one garbage partition ditch to divide both sides of the garbage partition ditch into two independent garbage heaps , the garbage partition groove is provided with a cover film inserted along its height direction, and the cover film covers the top surfaces of the two garbage heaps respectively. This arrangement provides a new method of covering membrane partitions and sealing, which can quickly partition the stack, and cooperate with the landfill gas collection method of gas gathering under the membrane to separate the landfill gas between each partition, which can quickly collect gas. The area is controlled, local damage will not affect the overall landfill gas concentration, effectively improving the collection efficiency of the landfill gas, and the cover film is sealed in partitions, and the area of the cover film in each partition becomes smaller, so that the cover film is not easily opened by the wind, and the cover film is improved. Airtight effect, reduce safety hazards.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic structural diagram 1 of a landfill covering film partitioned closed system in an embodiment of the present invention;

FIG. 2 is a second structural schematic diagram of a landfill cover film partitioned closed system in an embodiment of the present invention.

In Figure 1-Figure 2:

1- Garbage partition ditch; 2- Garbage heap; 3- Cover film; 4- Landfill garbage.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. In addition, the whole content of the structure shown in the following embodiment is not limited to what is necessary for the solution of the invention described in the claim.

Please refer to accompanying drawings 1-2, the landfill covering film partition sealing system provided in this embodiment includes a landfill area, and the landfill area is provided with at least one garbage partition ditch 1 to divide the two sides of the garbage partition ditch 1 into two For the independent garbage heap 2, the garbage partition groove 1 is provided with a cover film 3 inserted along its height direction, and the cover film 3 covers the top surfaces of the two garbage heaps 2 respectively, thereby isolating the two garbage heaps 2. It should be noted that the "height direction" of the garbage partition ditch mentioned in the text refers to the placement state of the landfill cover film partition closed system as shown in Figure 1, and the upper and lower directions in the figure are the reference. height direction. This arrangement provides a new type of covering film partition sealing method, which can quickly seal the stack body, and cooperate with the landfill gas collection method of gas collection under the membrane to collect the landfill gas, and bury the landfill between each partition. Gas separation can quickly control each gas gathering area, local damage will not affect the overall landfill gas concentration, effectively improve the efficiency of landfill gas collection, and the cover film is sealed, and the area of the cover film in each partition becomes smaller, making the cover film It is not easy to be opened by the wind, which improves the sealing effect of the cover film and reduces the potential safety hazard.

As shown in Figure 1, the garbage partition ditch 1 is a square ditch, which is convenient for construction and excavation during the elevation landfill process. The height H of the garbage partition ditch 1 is 1.8m-2.2m, and the width W is 0.8m-1.2m. After many actual construction verifications, the observation results show that the height H of the garbage partition trench 1 is preferably 2 meters, and the width W is preferably 1 meter. The partition trench formed at this time is not only convenient for construction, but also has better isolation effect. When the membrane is damaged, it can effectively act as a partition to ensure that air does not enter other areas and reduce the concentration of landfill gas in other areas.

In this embodiment, the bottom and side surfaces of the garbage partition trench 1 are covered with a cover film 3, that is, the cover film 3 is laid flat along the bottom surface of the trench and extends upward along the side surfaces to further enhance the isolation and blocking effect and improve the partition of the garbage dump. containment control.

Specifically, two cover films 3 are arranged overlappingly, the first ends of the two cover films 3 are located on the bottom surface of the garbage partition groove 1 , and the two layers of film cover the bottom surface flatly. The second ends of the two covering films 3 protrude out of the garbage partition ditch 1 and are stretched and flattened to the garbage piles 2 on both sides respectively, so as to cover the top surfaces of the two garbage piles 2 . In this way, double-layer separation is adopted in the isolation area, and the partition sealing effect is better.

In the specific embodiment of the present invention, the first ends of the two cover films 3 are fixedly connected together to ensure that the two layers of films will not be dislocated and separated from each other, always ensure that the partition grooves are all double-layered isolation, and the film connection is disposed in the At the bottom, it also ensures that the two will not be easily torn apart by the wind, and that the cover film will not be damaged due to the disconnection of the connection, which will affect the concentration of landfill gas collection.

In the preferred solution of this embodiment, the first ends of the two cover films 3 are fixedly connected by single-track welding, so that the welding speed is fast, the welding seam is formed at one time, the welding strength is high, and the welding seam is smooth, which makes the connection more firm and reliable, and is easy to implement. .

As shown in FIG. 2 , the garbage partition ditch 1 further includes landfill garbage 4 filled on the cover film 3 to press the cover film 3 tightly. In this way, the covering film is directly inserted into the garbage heap and pressed tightly, which can play the role of fixing the covering film, which improves the fixing effect of the covering film compared with fixing with a cement block.

As an optional embodiment, the cover film 3 is a high-density polyethylene film with a thickness of 0.75 mm or 1 mm. High-density polyethylene film has good anti-corrosion performance, electrical performance, moisture-proof performance, anti-leakage performance, environmental stress crack resistance, high tensile strength, anti-aging, stable and reliable material, long service life, suitable for landfills Airtight isolation.

This embodiment also provides a partition sealing method based on the above-mentioned landfill covering film partition sealing system. The method is used when the landfill body is divided into regions for gas collection when the landfill gas is collected. When covering the garbage dump body with a cover film, insert the cover film into the garbage dump body for partition sealing. The method includes the following steps: after compacting and leveling the landfill area, digging out at least one garbage partition ditch 1 on the landfill area, preferably, the garbage partition ditch 1 is 2 meters high and 1 meter wide; The completed covering film 3 is put into the bottom of the garbage partition ditch 1, and is tiled along the bottom surface and the side of the garbage partition ditch 1; The film 3 is stretched and laid flat to the garbage piles 2 on both sides to cover the top surfaces of the two garbage piles 2 . This covering film sealing method can quickly seal the garbage piles in different areas without interfering with each other, effectively improve the collection efficiency of landfill gas, ensure the concentration of landfill gas in each partition, and fix the covering film so that the covering film is not affected by wind. open.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a landfill covering film partition closed system, is characterized in that, comprises landfill area, and described landfill area is provided with at least one garbage partition ditch (1), so that both sides of described garbage partition ditch (1) Divided into two independent garbage heaps (2), the garbage partition groove (1) is provided with a covering film (3) inserted along its height direction, and the covering film (3) covers two of the garbage respectively The top surface of the stack (2). 2 . The landfill covering film partition sealing system according to claim 1 , wherein the garbage partition trench ( 1 ) is a square trench. 3 . 3 . The landfill cover film partition sealing system according to claim 2 , wherein the bottom surface and the side surface of the garbage partition trench ( 1 ) are covered with the cover film ( 3 ). 4 . 4. The landfill cover film partition sealing system according to claim 3, characterized in that, the cover films (3) are two and are arranged overlappingly, and the first ends of the two cover films (3) are located at On the bottom surface of the garbage partition ditch (1), the second ends of the two covering films (3) protrude out of the garbage partition ditch (1) and are stretched flat to the garbage dump bodies (2) on both sides respectively. to cover the top surfaces of the two garbage heaps (2). 5. The landfill cover film partition sealing system according to claim 4, characterized in that the first ends of the two cover films (3) are fixedly connected together. 6. The landfill cover film partition sealing system according to claim 5, characterized in that the first ends of the two cover films (3) are fixedly connected by monorail welding. 7. The landfill covering film partition sealing system according to claim 2, characterized in that, the height H of the garbage partition ditch (1) is 1.8m-2.2m, and the width W is 0.8m-1.2m. 8. The landfill covering film partition sealing system according to claim 3, wherein the garbage partition ditch (1) further comprises landfill garbage (4) filled on the covering film (3), to compress the cover film (3). 9 . The landfill cover film partition sealing system according to claim 1 , wherein the cover film ( 3 ) is a high-density polyethylene film. 10 . 10. A partition sealing method based on the landfill covering film partition sealing system according to claim 8, characterized in that, comprising the following steps: after compacting and leveling the landfill area, in the landfill area At least one garbage partition ditch (1) is dug out; the covering film (3) is put into the bottom of the garbage partition ditch (1), and is tiled along the bottom surface and side surface of the garbage partition ditch (1); The garbage partition ditch (1) is filled with landfill garbage (4), and compacted and flattened; the covering film (3) is stretched and flattened toward the garbage heaps (2) on both sides to cover two of the garbage The top surface of the stack (2).

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