CN210507549U

CN210507549U - Vertical anti-seepage structure of landfill

Info

Publication number: CN210507549U
Application number: CN201920850515.9U
Authority: CN
Inventors: 周学进; 任小娇; 吕婧婧; 马子房; 黄子鉴; 黄海洋
Original assignee: Yunnan Yike Environmental Construction Co ltd; Yunnan Investment Ecology And Environment Technology Co ltd
Current assignee: Yunnan Yike Environmental Construction Co ltd; Yunnan Investment Ecology And Environment Technology Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-05-12
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a vertical seepage-proofing structure of a landfill, which comprises a wall body arranged at the periphery of the landfill, wherein the wall body is sequentially provided with a foundation stone ramming wall body layer, a bentonite curtain wall layer and an internal reinforced concrete wall body layer from inside to outside; and a waterproof coating layer and a waterproof inner layer are sequentially arranged in the wall body. The utility model discloses a two-layer reinforced structure and multilayer waterproof layer structure for landfill outlying wall body has good steadiness, avoids the seepage of harmful liquid or directly discharges to the environment in, the polluted environment.

Description

Vertical anti-seepage structure of landfill

Technical Field

The utility model relates to an antiseep structure of landfill, specifically speaking relate to a perpendicular seepage prevention structure of landfill.

Background

In order to prevent liquid in the landfill from leaking to pollute the surrounding environment, the bottom, periphery and top of the landfill are generally covered with impermeable layers. However, the vertical seepage-proofing structure of the existing landfill site is single in structure and poor in garbage treatment effect, and liquid in the landfill site is easy to leak into the environment to pollute the environment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a perpendicular seepage prevention structure of landfill that the steadiness is good, avoid the perpendicular infiltration of liquid.

In order to solve the technical problem, the utility model discloses a technical scheme does: a vertical seepage-proofing structure of a landfill comprises a wall body arranged on the periphery of the landfill, wherein the wall body is sequentially provided with a foundation stone rammed wall body layer, a bentonite curtain wall layer and an internal reinforced concrete wall body layer from inside to outside; and a waterproof coating layer and a waterproof inner layer are sequentially arranged in the wall body.

Preferably, the waterproof inner layer comprises an HDPE thin film layer with the inner layer thickness of 1-2mm and a sodium bentonite waterproof blanket layer on the outer layer.

Preferably, the outer wall of the foundation stone rammed wall body layer is further provided with an outer waterproof layer.

Preferably, the outer waterproof layer comprises an HDPE film inner layer and a nonwoven geotextile outer layer.

Preferably, the thickness of the foundation stone rammed wall body layer is 1-2m, the width of the bentonite curtain wall layer is 0.5-1 m, and the width of the reinforced concrete wall body layer is 1-2 m.

The utility model has the advantages that: the utility model has the advantages that the foundation stone rammed wall body layer, the bentonite curtain wall layer and the internal reinforced concrete wall body layer are sequentially arranged from inside to outside, so that the foundation stone rammed wall body layer and the internal reinforced concrete wall body layer have good stabilizing effect, have higher strength and avoid collapse; the bentonite curtain wall layer is arranged in the bentonite curtain wall layer, so that a good permeation resistance effect is achieved; in addition, a waterproof coating layer and a waterproof inner layer are sequentially arranged in the outer wall body; be equipped with multilayer antiseep layer, effectively avoid the infiltration of the liquid in the landfill to the underfloor, avoid the pollutant to discharge in the environment, cause environmental secondary pollution.

Drawings

Fig. 1 is a schematic structural view of the vertical anti-seepage structure of the landfill site of the utility model.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the vertical seepage-proofing structure of the landfill site of the present invention comprises a wall body 1 arranged at the periphery of the landfill site, specifically, the wall body 1 is provided with a foundation stone ramming wall body layer 11, a bentonite curtain wall layer 12 and an internal reinforced concrete wall body layer 13 in sequence from inside to outside; wherein the sizes of each layer of the wall body 1 are as follows: the thickness of the foundation stone rammed wall body layer 11 is 1-2m, the width of the bentonite curtain wall layer 12 is 0.5-1 m, and the width of the reinforced concrete wall body layer 13 is 1-2 m; the foundation stone rammed wall body layer 11 and the internal reinforced concrete wall body layer 13 play a good stabilizing role, have higher strength and avoid collapse; the bentonite curtain wall layer 12 is arranged in the bentonite curtain wall layer to play a good role in resisting permeation; in order to better play the role of anti-seepage, a waterproof coating layer 2 and a waterproof inner layer 3 are sequentially arranged in the wall body 1. The waterproof inner layer 3 comprises an HDPE thin film layer with the inner layer thickness of 1-2mm and a sodium bentonite waterproof blanket layer on the outer layer. The HDPE thin layer has good anti-seepage performance, can prevent liquid infiltration earth's surface from polluting groundwater in the rubbish in the landfill, prevents simultaneously in surface water infiltration landfill pond, and the HDPE thin layer still has good corrosion resisting property and humidity resistance moreover, is applicable to multiple environment, long service life. The sodium bentonite waterproof blanket layer is formed by filling high-expansibility sodium bentonite between special composite geotextile and non-woven fabric, and the bentonite anti-seepage pad manufactured by a needle punching method can form a plurality of small fiber spaces, so that bentonite particles can not flow in one direction, and a uniform high-density colloidal waterproof layer is formed in the pad when meeting water, thereby further improving the anti-seepage performance of the waterproof inner layer 3. So that the liquid in the landfill can not permeate to the underground, and the discharge of the polluted liquid is reduced.

In order to avoid the penetration of external liquid into the landfill site, an external waterproof layer 4 is further arranged on the outer wall of the foundation stone rammed wall body layer 11. The outer waterproof layer 4 comprises an HDPE film inner layer and a nonwoven geotextile outer layer.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A vertical seepage-proofing structure of a landfill site comprises a wall body (1) arranged on the periphery of the landfill site, and is characterized in that a foundation stone ramming wall body layer (11), a bentonite curtain wall layer (12) and an internal reinforced concrete wall body layer (13) are sequentially arranged on the wall body (1) from inside to outside; and a waterproof coating layer (2) and a waterproof inner layer (3) are sequentially arranged in the wall body (1).

2. The vertical seepage prevention structure for the landfill according to claim 1, wherein the waterproof inner layer (3) comprises an HDPE thin film layer with the inner layer thickness of 1-2mm and a sodium bentonite waterproof blanket layer on the outer layer.

3. The vertical seepage-proofing structure of the landfill according to claim 1, wherein the outer wall of the foundation stone rammed wall body layer (11) is further provided with an outer waterproof layer (4).

4. The vertical seepage prevention structure for the landfill according to claim 3, wherein the outer waterproof layer (4) comprises an HDPE film inner layer and a non-woven geotextile outer layer.

5. The vertical seepage prevention structure for the landfill according to claim 1, wherein the thickness of the foundation stone rammed wall body layer (11) is 1-2m, the width of the bentonite curtain wall layer (12) is 0.5-1 m, and the width of the reinforced concrete wall body layer (13) is 1-2 m.