CN217500457U

CN217500457U - Adopt landfill pipe of modified clay protection to wear membrane structure

Info

Publication number: CN217500457U
Application number: CN202122751858.XU
Authority: CN
Inventors: 刘宁; 朱雪冬; 王小芳; 王晓骋; 吴泉澳; 甘宇宁
Original assignee: Shanghai Shengyi Environment Technology Co ltd
Current assignee: Shanghai Shengyi Environment Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-09-27
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a landfill prevention of seepage technical field just discloses a landfill tub membrane structure of wearing of adoption modified clay protection, including landfill basic unit, install the filtration liquid collecting pipe on the landfill basic unit, the peripheral ditch groove that has excavated at filtration liquid collecting pipe installation position, modified clay prevention of seepage lining has been laid to the ditch groove top, modified clay prevention of seepage lining upper berth is equipped with HDPE prevention of seepage membrane, HDPE prevention of seepage membrane one side welding has HDPE prevention of seepage membrane cover. This kind of adopt landfill pipe to wear membrane structure of modified clay protection utilizes the membrane sleeve pipe around parcel modified clay, with the guide-exhaust pipe seamless joint, strengthens the prevention of seepage effect of pipe poling structure department, disperses the pressure of covering rubbish, fills membrane sleeve pipe structure lower part cavity, avoids pipe poling because of dragging, tearing that the atress is inhomogeneous causes damage such as, has protected the completeness of pipe poling structure.

Description

Adopt landfill pipe of modified clay protection to wear membrane structure

Technical Field

The utility model relates to a landfill prevention of seepage technical field specifically is a landfill pipe membrane penetrating structure who adopts modified clay protection.

Background

With the rapid development of economy and the improvement of urbanization level in China, the yield of municipal solid waste is increased sharply, the problems of waste disposal and pollution prevention become more and more prominent, and the landfill is the main disposal method for disposing the municipal solid waste at present.

The landfill site mainly blocks the contact of pollutant and soil and groundwater through the HDPE membrane barrier layer of bottom, and landfill site bottom is equipped with the filtration liquid drainage pipe that passes the prevention of seepage membrane, must carry out seamless welding and can not appear the desoldering action that any reason produced between drainage pipe and the prevention of seepage membrane in the in-process of qualified landfill site operation in order to prevent that filtration liquid seepage from producing the pollution.

At present, two methods are used for the conventional pipe membrane penetrating position, one method is to weld the geomembrane on the pipeline directly, the second method is to adopt a horn-shaped HDPE geomembrane sleeve, a small opening end is welded on the pipeline, and a large opening end is welded on the geomembrane.

Chinese patent publication No. CN212052898U discloses a membrane penetration protection structure of a leachate collecting pipe in a refuse landfill, which includes a concrete base, a HDPE film layer and a pipe shoe, wherein the HDPE film layer is laid on the concrete base, holes penetrating through the leachate collecting pipe are arranged on the HDPE film layer and the concrete base, and the pipe shoe is sleeved on the leachate collecting pipe and covers the HDPE film layer. The HDPE film layer is fixed with the concrete base through an expansion bolt. The pipe boot is skirt-shaped including the sleeve and the pipe skirt that link together, and its osculum end is connected as an organic whole with telescopic one end, and the material of sleeve and pipe skirt is the HDPE membrane. The concrete base is poured on the side slope around the pipe, and the pipe penetrating film layer is connected with the concrete base through the expansion bolts, so that the damages of pulling, tearing and the like caused by uneven stress of the pipe penetrating film are improved to a certain extent, and the anti-seepage protection effect is effectively achieved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be not enough to prior art, the utility model provides an adopt landfill tub membrane structure of modified clay protection possesses advantages such as prevention of seepage system destruction that has protected tub membrane structure's complete, has avoided the differential settlement to lead to, has solved the problem that the background art provided.

(II) technical scheme

In order to realize the purpose that the anti-seepage system that the membrane structure was worn to above-mentioned protection tube is complete, avoid uneven settlement to lead to destroys, the utility model provides a following technical scheme: the membrane penetrating structure comprises a landfill base layer, wherein a leachate collecting pipe is mounted on the landfill base layer, a groove is dug in the periphery of the mounting position of the leachate collecting pipe, a modified clay anti-seepage lining layer is laid above the groove, an HDPE (high-density polyethylene) anti-seepage membrane is laid on the modified clay anti-seepage lining layer, an HDPE anti-seepage membrane sleeve is welded above the HDPE anti-seepage membrane, the leachate collecting pipe penetrates through the HDPE anti-seepage membrane sleeve and the HDPE anti-seepage membrane and is welded, a fastening piece is sleeved at the welding position of the leachate collecting pipe and the HDPE anti-seepage membrane sleeve, a modified clay layer is laid on the HDPE anti-seepage membrane sleeve and the HDPE anti-seepage membrane, and an anti-seepage protective layer is laid on the modified clay layer.

Preferably, the area of the groove is within the range of 500mm from the connecting part of the percolate collecting pipe and the base layer of the refuse landfill to the periphery.

Preferably, when the modified clay impermeable lining layer is laid, the field bottom compaction degree is not less than 90%, and the slope compaction degree is not less than 85%.

Preferably, the HDPE anti-seepage film sleeve structure is in a horn mouth shape, the small opening end of the HDPE anti-seepage film sleeve is welded with the percolate collecting pipe in a single rail mode, and the large opening end of the HDPE anti-seepage film sleeve is welded with the HDPE anti-seepage film.

Preferably, the wrapping length between the modified clay layer and the leachate collecting pipe is not less than 200 mm.

(III) advantageous effects

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this kind of adopt landfill pipe of modified clay protection to wear membrane structure utilizes the membrane sleeve pipe around the parcel modified clay, with the drainage guide pipe seamless joint, strengthens the prevention of seepage effect of pipe pad structure department, disperses the pressure of covering rubbish, fills membrane sleeve pipe structure lower part cavity, avoids pipe pad because of the inhomogeneous damage such as dragging, tearing that causes of atress, has protected the pipe pad structure's is complete.

2. This kind of adopt landfill pipe of modified clay protection to wear membrane structure adopts HDPE membrane sleeve pipe structural connection HDPE prevention of seepage membrane and drainage guide pipe, makes not lug connection between pipeline and the prevention of seepage membrane to will wear the stress dispersion that membrane department exists to two junctions, the junction is more firm.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a landfill base layer; 2. a modified clay permeation-resistant lining layer; 3. modifying the clay layer; 4. a percolate collecting pipe; 5. a fastener; 6. HDPE impermeable film sleeves; 7. an impermeable protective layer; 8. an HDPE barrier film; 9. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a landfill pipe membrane penetrating structure protected by modified clay includes a landfill base layer 1, a leachate collecting pipe 4 is installed on the landfill base layer 1, a groove 9 is dug around the installation position of the leachate collecting pipe 4, a modified clay impermeable lining layer 2 is laid above the groove 9, an HDPE impermeable membrane 8 is laid on the modified clay impermeable lining layer 2, an HDPE impermeable membrane sleeve 6 is welded above the HDPE impermeable membrane 8, the leachate collecting pipe 4 penetrates through the HDPE impermeable membrane sleeve 6 and the HDPE impermeable membrane 8 and is welded, a fastener 5 is sleeved at the welding position of the leachate collecting pipe 4 and the HDPE impermeable membrane sleeve 6, a modified clay layer 3 is laid on the HDPE impermeable membrane sleeve 6 and the HDPE impermeable membrane 8, and an impermeable protective layer 7 is laid on the modified clay layer 3.

Furthermore, the area of the groove 9 is within the range of 500mm from the connection part of the percolate collecting pipe 4 and the base layer 1 of the refuse landfill to the periphery, when the modified clay impermeable lining layer 2 is laid, the field bottom compaction degree is not less than 90%, the slope compaction degree is not less than 85%, and the modified clay impermeable lining layer plays a certain role in protecting the HDPE impermeable membrane 8 on the upper part.

Furthermore, the structure of the HDPE anti-seepage film sleeve 6 is in a horn mouth shape, the small opening end of the HDPE anti-seepage film sleeve 6 is welded with the percolate collecting pipe 4 in a single rail mode, and the large opening end of the HDPE anti-seepage film sleeve 6 is welded with the HDPE anti-seepage film 8.

Furthermore, the wrapping length between the modified clay layer 3 and the percolate collecting pipe 4 is not less than 200mm, in order to avoid the formation of a cavity at the lower part of the HDPE impermeable membrane sleeve 6, the HDPE impermeable membrane sleeve 6 is pulled under the pressure of the overlying garbage, and therefore the cavity part is filled and compacted by the modified clay impermeable lining layer 2. And then, the modified clay layer 3 is continuously covered on the upper part of the HDPE anti-seepage film sleeve 6 to wrap the HDPE anti-seepage film sleeve 6, so that a welding seam between the HDPE anti-seepage film sleeve 6 and the percolate collecting pipe 4 and between the HDPE anti-seepage films 8 is protected, the influence of uneven settlement on the HDPE anti-seepage film sleeve 6 is reduced, and the anti-seepage effect at the HDPE anti-seepage film sleeve 6 is enhanced.

The working principle is as follows: when a landfill site is reconstructed, firstly, a percolate collecting pipe 4 is buried in a landfill site base layer 1, after the landfill is completed, a groove 9 is dug at the position of 500mm radiation of the periphery of the percolate collecting pipe 4, after the completion, a modified clay anti-seepage lining layer 2 is laid at the bottom of the groove 9, then the percolate collecting pipe 4 and an upper HDPE anti-seepage membrane sleeve 6 are welded, after the completion, a modified clay layer 3 is laid at the upper part, and a modified clay layer 3 is laid at the rear part.

The HDPE impermeable membrane sleeve 6 is protected by the modified clay layer 3, the modified clay layer 3 has low permeability and can be in seamless connection with the percolate collecting pipe 4, the impermeable effect of the thin point of the HDPE impermeable membrane sleeve 6 is reinforced, the lower cavity of the HDPE impermeable membrane sleeve 6 is filled, even sedimentation occurs, and damage to the HDPE impermeable membrane sleeve 6 caused by uneven sedimentation is avoided.

The utility model discloses an adopt landfill yard pipe transmembrane structure of modified clay protection, simple structure, convenient to use have solved the tensile problem of filtration liquid collecting pipe 4 and HDPE prevention of seepage membrane sleeve 6 junction, have realized avoiding the inhomogeneous settlement to lead to the effect that HDPE prevention of seepage membrane sleeve 6 destroyed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A landfill pipe membrane penetrating structure protected by modified clay comprises a landfill base layer (1);

the method is characterized in that:

the landfill site is characterized in that a leachate collecting pipe (4) is installed on a landfill site base layer (1), a groove (9) is dug at the periphery of the installation position of the leachate collecting pipe (4), a modified clay anti-seepage lining layer (2) is laid above the groove (9), an HDPE (high-density polyethylene) anti-seepage film (8) is laid on the modified clay anti-seepage lining layer (2), an HDPE anti-seepage film sleeve (6) is welded above the HDPE anti-seepage film (8), the leachate collecting pipe (4) penetrates through the HDPE anti-seepage film sleeve (6) and the HDPE anti-seepage film (8) and is welded, a fastening piece (5) is sleeved at the welding position of the leachate collecting pipe (4) and the HDPE anti-seepage film sleeve (6), a modified clay layer (3) is laid on the HDPE anti-seepage film sleeve (6) and the HDPE anti-seepage film (8), and an anti-seepage protective layer (7) is laid on the modified clay layer (3).

2. The landfill through-pipe membrane structure protected by the modified clay as claimed in claim 1, wherein: the area of the groove (9) is within the range of 500mm from the connection part of the percolate collecting pipe (4) and the base layer (1) of the refuse landfill to the periphery.

3. The landfill pipe penetrating film structure protected by the modified clay according to the claim 1, is characterized in that: when the modified clay anti-seepage lining layer (2) is laid, the field bottom compaction degree is not less than 90%, and the side slope compaction degree is not less than 85%.

4. The landfill through-pipe membrane structure protected by the modified clay as claimed in claim 1, wherein: HDPE prevention of seepage membrane cover (6) structure is the horn mouth form, HDPE prevention of seepage membrane cover (6) small mouth end carries out single track welding with filtration liquid collecting pipe (4), HDPE prevention of seepage membrane cover (6) big mouth end and HDPE prevention of seepage membrane (8) welding.

5. The landfill pipe penetrating film structure protected by the modified clay according to the claim 1, is characterized in that: the wrapping length between the modified clay layer (3) and the leachate collecting pipe (4) is not less than 200 mm.