CN219137771U

CN219137771U - Curtain grouting structure suitable for refuse dump

Info

Publication number: CN219137771U
Application number: CN202223593709.6U
Authority: CN
Inventors: 谭勇; 陈世杰; 王琴; 任小舟; 贺洁
Original assignee: CCTEG Chongqing Engineering Group Co Ltd
Current assignee: CCTEG Chongqing Engineering Group Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of water conservancy and hydropower engineering, and discloses a curtain grouting structure suitable for a garbage field, which comprises a base stratum, a curtain grouting layer and a water pumping hole layer, wherein the curtain grouting layer is arranged outside the garbage field and comprises a first curtain grouting hole and a second curtain grouting hole which are adjacently arranged, the first curtain grouting hole and the second curtain grouting hole are arranged in a crossed mode in sequence, a rotary spraying wall is arranged at the upper parts of the first curtain grouting hole and the second curtain grouting hole, and the water pumping hole layer is arranged between the garbage field and the curtain grouting layer.

Description

Curtain grouting structure suitable for refuse dump

Technical Field

The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a curtain grouting structure suitable for a garbage yard.

Background

At present, a large number of old landfill sites exist in China, and most of the old landfill sites are not subjected to water seepage prevention arrangement according to regulations during construction, particularly waterproof cloth is not laid according to regulations, and after long time, the old landfill sites are subjected to sun-drying wind and rain, and generate bad smell of ammonia gas, so that surrounding residents are overwhelmed; meanwhile, the garbage percolate can be continuously diffused to the periphery through rainwater and infiltration, so that the surrounding water and soil are damaged, and the basement of a building can be possibly affected. At present, the old garbage landfill sites are standardized in a mode of transporting garbage to other sites, but the treatment period is long, and many garbage sites are not standardized at present. Therefore, a structure for sealing a refuse dump by using the curtain grouting structure is provided.

Disclosure of Invention

The utility model aims to provide a curtain grouting structure suitable for a refuse landfill, so as to solve the problem that the environment is polluted by refuse leakage liquid of an old refuse landfill.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a curtain grouting structure suitable for refuse dump, includes stratum basale, curtain grouting layer and water pumping hole layer, and the curtain grouting layer sets up in the refuse dump outside, and the curtain grouting layer is including setting up first curtain grouting hole and second curtain grouting hole adjacently, and first curtain grouting hole and second curtain grouting hole alternately form order are arranged, and the upper portion in first curtain grouting hole and second curtain grouting hole is equipped with the jet grouting wall, and water pumping hole layer is located between refuse dump and the curtain grouting layer.

The beneficial effect of this scheme is:

the construction period of curtain grouting is short, and the grouting process of first curtain grouting hole and second curtain grouting hole can be under synchronous construction, can be quick keep apart the landfill, blocks the exudation of landfill leachate, reduces old landfill's influence to resident's life around. The first curtain grouting holes and the second curtain grouting holes are arranged in a crossed sequence, so that the front and rear two rows of curtain grouting holes can block water at different positions of a garbage site, the first curtain grouting holes and the second curtain grouting holes form an integral seepage-proofing structure, the seepage quantity is effectively reduced, the seepage pressure to the single row of grouting curtain holes is reduced, and the water-proofing effect and the integral stability of the structure are improved. Because the upper layer of the soil around the garbage field is often soil, the structural stability of the soil layer is weaker, the upper part of the curtain grouting layer is provided with a rotary spraying wall, the upper layer structure of the curtain grouting is reinforced, and the overall stability of the curtain grouting structure is further ensured.

Preferably, as an improvement, the water pumping hole layer comprises a plurality of water pumping holes, the water pumping holes comprise a filter screen layer and a reinforcing filter layer around the filter screen layer, the filter screen layer comprises a water filtering flower pipe and a yarn filter screen wrapped on the water filtering flower pipe, the reinforcing filter layer comprises an upper section and a lower section, the upper section comprises a gravel filter layer and a flower pipe protection wall sleeved outside the gravel filter layer, the lower section comprises a gravel filter layer, and the upper section of the water pumping holes is provided with hole piles for protecting the water pumping holes. Through the arrangement, the garbage field is affected by rain and the like, garbage percolate can be continuously generated, most of the percolate can be extracted at intervals by arranging the water pumping hole layer, the influence of the garbage field on the surrounding environment is further reduced, and the reinforcing filter layer is arranged to protect the filter screen layer inside, so that the garbage field is not easy to deform due to environmental change; the upper segment of the reinforced filter layer is provided with a gravel filter layer and a flower pipe retaining wall sleeved outside the gravel filter layer, the soil layer around a general garbage field is soil, so that the structural stability of the upper segment of a water pumping hole can be ensured by the arrangement, and the continuous filtration of garbage leakage liquid can be ensured by the gravel filter material at the lower segment.

Preferably, as a modification, the vertical distance between the first curtain grouting hole and the second curtain grouting hole is 1-1.5 m. Through the arrangement, after grouting the curtain grouting layer, slurry at the same height position is diffused in the base stratum in opposite directions and is connected into a whole, so that the connection effect is better after grouting of two rows of curtain grouting holes, the connection strength is higher, and the connection strength and the connection stability of the whole curtain grouting layer are further improved.

Preferably, as a modification, the curtain grouting layer is 4-8 meters away from the periphery of the refuse dump. Through the arrangement, the curtain grouting layer can block garbage leakage liquid at a proper position, meanwhile, the curtain grouting layer does not occupy too large surrounding space, and the influence on the surrounding environment is reduced.

Preferably, as a modification, the bottom depth of the rotary jetting wall is 1-2 m below the bedrock layer. Through the arrangement, the rotary spraying wall is connected with the bedrock layer, so that the integral strength of the curtain grouting layer is ensured, and the stability of the curtain grouting structure is further ensured.

Preferably, as a modification, the depth of the pumping hole layer is 0.8-0.9 times of the depth of the curtain grouting layer. Through the arrangement, the depth of the water pumping hole layer is deeper, so that the influence of garbage leakage liquid on the following curtain grouting layer can be reduced.

Preferably, as a modification, the water pumping hole layer comprises at least two rows of water pumping holes, and the distance between the water pumping holes is 3-5 meters. Through setting up two rows of water pumping holes, can carry out the drainage to the different positions around the refuse dump, promote drainage effect.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a pump hole according to an embodiment of the present utility model;

FIG. 3 is a top view of a first curtain grouting hole and a second curtain grouting hole according to an embodiment of the present utility model;

FIG. 4 is a top view of a spin wall according to an embodiment of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the system comprises a base stratum 1, a first curtain grouting hole 2, a second curtain grouting hole 3, a rotary spraying wall 4, a water pumping hole 5, a filter screen layer 6, a gravel filter layer 7, a pipe protecting wall 8, a hole pile 9 and a garbage yard 10.

Examples

The embodiment is basically shown in fig. 1-4, and the curtain grouting structure for a refuse dump shown in fig. 1 comprises a base layer 1, a curtain grouting layer and a water pumping hole layer, wherein the curtain grouting layer is arranged outside the refuse dump 10, the curtain grouting layer comprises a plurality of first curtain grouting holes 2 and second curtain grouting holes 3 which are adjacently arranged, the first curtain grouting holes 2 and the second curtain grouting holes 3 are arranged in a cross-shaped sequence (shown in fig. 3), and the upper parts of the first curtain grouting holes 2 and the second curtain grouting holes 3 are provided with rotary spraying walls 4 as shown in fig. 1 and 4, and the rotary spraying walls 4 are integrally connected. The water pumping hole layer is positioned between the garbage field 10 and the curtain grouting layer; the bottom depth of the jet grouting wall 4 in the embodiment is 1-2 meters below the bedrock layer 1, and the jet grouting wall 4 is reinforced on the bedrock layer 1 through anchor bars so as to increase the stability of the structure.

As shown in fig. 1 and 2, the water pumping hole layer comprises a plurality of water pumping holes 5, the water pumping holes 5 comprise a filter screen layer 6 and a reinforcing filter layer around the filter screen layer 6, the filter screen layer 6 comprises a water filtering flower pipe and a yarn filter screen wrapped on the water filtering flower pipe, the reinforcing filter layer comprises an upper section and a lower section, the upper section comprises a gravel filter layer 7 and a flower pipe protection wall 8 sleeved outside the gravel filter layer 7, the lower section comprises a gravel filter layer 7, hole piles 9 for protecting the water pumping holes 5 are fixed above the water pumping holes 5, and the hole piles 9 are hollow cylindrical and are used for enclosing and protecting the upper surface of the water pumping holes 5; most of leakage liquid can be extracted at intervals by arranging the water pumping hole layer, the influence of the leakage liquid on the surrounding environment is further reduced, and the inner filter screen layer 6 can be protected by arranging the reinforcing filter layer, so that the leakage liquid is not easy to deform due to environmental change; the upper segment of the reinforced filter layer is provided with a gravel filter layer 7 and a flower pipe retaining wall 8 sleeved outside the gravel filter layer 7, so that the structural stability of the upper segment of the water pumping hole 5 can be ensured, and the gravel filter material at the lower segment can ensure continuous filtration of garbage leakage liquid.

The vertical distance between the first curtain grouting holes 2 and the second curtain grouting holes 3 is 1-1.5 m, the vertical distance in the embodiment is 1 m, the connection effect is better after grouting of the two rows of curtain grouting holes, the connection strength is higher, and the connection strength and the connection stability of the whole curtain grouting layer are further improved; the spacing between the adjacent first curtain grouting holes 2 is 1 meter, the spacing between the adjacent second curtain grouting holes 3 is 1 meter, and the arrangement can ensure the connection strength between the adjacent curtain grouting holes; the curtain grouting layer is 4-8 meters away from the periphery of the refuse dump 10, and the distance in the embodiment is 5 meters; the depth of the water pumping hole layer is 0.8-0.9 times of the depth of the curtain grouting layer, and the depth of the water pumping hole layer in the embodiment is 0.9 times of the depth of the curtain grouting layer; the water pumping hole layer comprises at least two rows of water pumping holes, the distance between the water pumping holes is 3-5 meters, and the distance in the embodiment is 3 meters.

The specific implementation process is as follows:

the first curtain grouting holes 2 and the second curtain grouting holes 3 are processed on the set rotary spraying wall 4, the first curtain grouting holes 2 and the second curtain grouting holes 3 are synchronously constructed, grouting is conducted on the first curtain grouting holes 2 and the second curtain grouting holes 3, the slurry diffuses and connects the two layers of curtain grouting holes along the bedrock layer 1, the filling of cracks and pores in the space of the two layers of curtain grouting holes is gradually completed, the first curtain grouting holes 2 and the second curtain grouting holes 3 are connected into a whole in the horizontal direction, the first curtain grouting holes 2 and the second curtain grouting holes 3 are arranged in a crossed mode in sequence, the front curtain grouting holes and the rear curtain grouting holes can block water at different positions of the refuse dump 10, leakage is effectively reduced, the osmotic pressure of the single-row curtain grouting holes is reduced, and the water-stop effect and the overall stability of the structure are improved. Because the upper layer of the soil around the garbage field 10 is often soil, the structural stability of the soil layer is weaker, the upper part of the curtain grouting layer is provided with the rotary spraying wall 4, the upper layer structure of the curtain grouting is reinforced, the overall stability of the curtain grouting structure is further ensured, percolate is pumped in a pumping hole according to the water level condition of the percolate, and the garbage percolate is discharged after pollution-free treatment.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. Curtain grouting structure suitable for refuse dump, its characterized in that: the utility model provides a curtain grouting structure suitable for refuse dump, includes stratum basale, curtain grouting layer and water pumping hole layer, and the curtain grouting layer sets up in the refuse dump outside, and the curtain grouting layer is including setting up first curtain grouting hole and second curtain grouting hole adjacently, and first curtain grouting hole and second curtain grouting hole alternately form order are arranged, and the upper portion in first curtain grouting hole and second curtain grouting hole is equipped with the jet grouting wall, and water pumping hole layer is located between refuse dump and the curtain grouting layer.

2. The curtain grouting structure for a refuse dump according to claim 1, wherein: the water pumping hole layer comprises a plurality of water pumping holes, the water pumping holes comprise filter screen layers and reinforcing filter layers around the filter screen layers, the filter screen layers comprise water filtering flower pipes and yarn filter screens wrapped on the water filtering flower pipes, the reinforcing filter layers comprise upper sections and lower sections, the upper sections comprise gravel filter layers and flower pipe protective walls sleeved outside the gravel filter layers, the lower sections comprise the gravel filter layers, and hole piles used for protecting the water pumping holes are arranged on the upper sections of the water pumping holes.

3. The curtain grouting structure for a refuse dump according to claim 2, wherein: the vertical distance between the first curtain grouting hole and the second curtain grouting hole is 1-1.5 m.

4. A curtain grouting structure for a refuse dump according to claim 3, wherein: the curtain grouting layer is 4-8 m away from the periphery of the garbage field.

5. The curtain grouting structure for a refuse dump according to claim 4, wherein: the bottom depth of the jet grouting wall is 1-2 meters below the bedrock layer.

6. The curtain grouting structure for a refuse dump according to claim 5, wherein: the depth of the water pumping hole layer is 0.8-0.9 times of the depth of the curtain grouting layer.

7. The curtain grouting structure for a refuse dump according to claim 6, wherein: the water pumping hole layer comprises at least two rows of water pumping holes, and the distance between the water pumping holes is 3-5 meters.