阅读说明：本技术 危废刚性填埋场自粘防渗屏障系统 (Dangerous useless rigidity landfill self-adhesion prevention of seepage barrier system ) 是由 刘好武 许武军 崔占明 孙晋良 于 2021-07-26 设计创作，主要内容包括：本发明公开了危废刚性填埋场自粘防渗屏障系统,包括填埋池、自粘土工布、粘接带、HDPE土工膜、镀锌钢板压条、消防一体钉和外层自粘布,其特征在于：所述自粘土工布采用特殊针刺工艺,使所述自粘土工布的表面为绒圈面状,即粘扣带中圈面。本发明涉及刚性填埋场防渗屏障设备领域,具体地讲,涉及危废刚性填埋场自粘防渗屏障系统。本装置能刚性填埋场防渗屏障的制作。(The invention discloses a dangerous waste rigid landfill self-adhesion anti-seepage barrier system, which comprises a landfill pool, self-adhesion geotextile, an adhesive tape, a high-density polyethylene (HDPE) geomembrane, a galvanized steel sheet pressing strip, a fire-fighting integrated nail and outer-layer self-adhesion cloth, and is characterized in that: the self-adhesive geotextile adopts a special needling process, so that the surface of the self-adhesive geotextile is in a pile loop surface shape, namely a middle loop surface of the fastening tape. The invention relates to the field of rigid landfill seepage-proofing barrier equipment, in particular to a dangerous waste rigid landfill self-adhesion seepage-proofing barrier system. The device can be used for manufacturing the anti-seepage barrier of the rigid landfill.)

1. Useless rigidity landfill self-adhesion prevention of seepage barrier system of danger, including landfill pond (1), self-adhesion geotechnological cloth (2), bonding area (3), HDPE geomembrane (4), galvanized steel sheet layering (6), integrative nail of fire control (5) and outer self-adhesive cloth (7), its characterized in that: the self-adhesive geotextile (2) adopts a special needling process, so that the surface of the self-adhesive geotextile (2) is of a pile loop surface shape, namely a middle loop surface of the fastening tape.

2. The hazardous waste rigid landfill self-adhesive impermeable barrier system of claim 1, characterized in that: the adhesive tape (3) is a hook-face-shaped strip, the width of the adhesive tape (3) is 70 cm-100 cm, and the length of the adhesive tape is set according to the length of the landfill pond.

3. The hazardous waste rigid landfill self-adhesive seepage control barrier system of claim 2, characterized in that: the HDPE geomembrane (4) is subjected to a hot covering adhesive tape process, the adhesive tapes (3) are attached to the two sides of the HDPE geomembrane (4) at intervals of 1-2 m, and the length of each adhesive tape penetrates through the length of the whole HDPE geomembrane.

4. The hazardous waste rigid landfill self-adhesive seepage control barrier system of claim 3, wherein: the galvanized steel sheet batten (6) is 30-50 mm wide and not less than 3.0mm thick.

5. The hazardous waste rigid landfill self-adhesive impermeable barrier system of claim 1, characterized in that: the specification of the fire-fighting integrated nail (5) is not less than 50 mm.

6. The manufacturing method of the dangerous waste rigid landfill self-adhesion anti-seepage barrier system according to claim 1 is characterized in that: the method comprises the landfill pool (1), wherein the step of laying an impermeable structural layer in the landfill pool (1) comprises the following steps;

the method comprises the following steps: fixing the self-adhesive geotextile (2) on the wall of the landfill pool (1), wherein the self-adhesive geotextile (2) is fixed on the wall of the landfill pool (1) through the galvanized steel plate pressing strip (6), the galvanized steel plate pressing strip (6) is fixedly connected with the wall of the landfill pool (1) through the fire-fighting integrated nail (5), and the loop of the self-adhesive geotextile (2) faces outwards;

step two: the pile loop surface of the self-adhesive geotextile (2) is adhered to the adhesive tape (3), the adhesive tape (3) is fixed on one side of the HDPE geomembrane (4), the adhesive tape (3) is also fixed on the other side of the HDPE geomembrane (4), and the adhesive tape on the HDPE geomembrane (4) is combined with the pile loop surface of the self-adhesive geotextile (2) to naturally form an effective closed area;

step three: the outer-layer self-adhesive cloth (7) is laid and adhered on the other side of the HDPE geomembrane (4), and the pile loop surface of the outer-layer self-adhesive cloth (7) faces the HDPE geomembrane (4), so that an effective closed area is formed after the outer-layer geotextile (7) is combined with the adhesive tape (3) on the HDPE geomembrane (4).

Technical Field

The invention relates to the field of rigid landfill seepage-proofing barrier equipment, in particular to a dangerous waste rigid landfill self-adhesion seepage-proofing barrier system.

Background

With the rapid development of socioeconomic, the amount of hazardous waste produced is increasing dramatically. The hazardous waste landfill meets the requirements of the Standard of hazardous waste landfill pollution control (GB 18598-2019); the solid waste storage and disposal strictly execute the requirements of a hazardous waste storage pollution control standard (GB 18597-2001) and a modification list thereof, and a general industrial solid waste storage and disposal site pollution control standard (GB 18599-2001) and a modification list thereof, and ensure that the disposal process does not cause secondary pollution to the environment.

The new standard GB18598-2019 stipulates that the requirements of 4.6, 4.7 and 4.8 are not met, and the distance between the bottom of the landfill seepage-proofing structure and the highest water level recorded by underground water is kept to be more than 3 m. The site of the landfill should not be selected in the areas of high compressibility silt, peat and soft soil. The saturation permeability coefficient of the natural foundation layer of the site of the landfill site is not more than 1.0X 10-cm/s, and the thickness of the natural foundation layer is not less than 2 m. The design requirement of a rigid landfill must be adopted.

The rigid landfill site is a landfill disposal facility adopting reinforced concrete as an anti-seepage barrier structure, and is designed into a plurality of independent and symmetrical landfill units, the area of each landfill unit is not more than 50m2, the volume of each landfill unit is not more than 250m3, and the surface of the reinforced concrete, which is in contact with waste, is covered with anti-seepage and anti-corrosion materials. The new standard rigid landfill site built at present adopts HDPE geomembrane with the thickness of 2.0mm and 300g to 600g of needle-punched geotextile (single-layer cloth under the membrane/double-layer cloth under the membrane) to construct an artificial anti-seepage barrier.

The built rigid landfill site adopts reinforced concrete as a landfill disposal facility of an anti-seepage barrier structure, and is designed into a plurality of independent and symmetrical landfill units according to new standard regulation, wherein the area of each landfill unit cannot exceed 50m2, and the volume of each landfill unit cannot exceed 250m 3. "then the optimum size of each landfill unit is 7.0m × 7.0m side length, 5.1m pool depth. However, in order to reduce the floor space and maximize the utilization of site resources, the projects mostly adopt the mode of reducing the side length size of the unit and increasing the pool depth, such as 10m of the pool depth.

The contact surface of the reinforced concrete and the waste is designed by adopting HDPE geomembrane with the thickness of 2.0mm and a 300-600 g needled geotextile anti-seepage structure, the HDPE geomembrane is spliced and connected in a hot-melt welding mode, and the geotextile is connected in a hot-air hot-seal mode. The anti-seepage material at the bottom of the landfill unit is paved, the anti-seepage material on the vertical wall of the landfill unit needs to be attached and anchored with the wall of the concrete pool, and the E-shaped lock embedded part and the HDPE geomembrane are connected in a plastic extrusion (plastic welding rod with the diameter of 4 mm) welding mode (without base cloth) in the traditional construction process and method. When the double-layer cloth is arranged on the lower membrane of the membrane, the HDPE geomembrane and the lower-layer geotextile are fixed (an outer anchoring method) by adopting a steel plate pressing strip and an expansion bolt (a nail) and then the punched part is covered and sealed by adopting a HDPE geomembrane block with the thickness of 2.0mm and the width of 20-30 cm, and the membrane strip and the geomembrane are connected and sealed by adopting a plastic extrusion (a plastic welding rod with the diameter of 4 mm) welding mode to connect and seal two gaps on the upper side and the lower side of the membrane strip. The anchoring distance is 2-3 m/way, and the anchoring length is the perimeter of the tank body. The outer layer cloth and the HDPE geomembrane are also attached and cannot be suspended. Adopt geotechnological sticky tape according to certain interval (1 ~ 2 m/way), bonding length promptly material length more, traditional useless rigid landfill of danger has barrier layer cross construction (built-in fitting is pour), lays that the welding construction is loaded down with trivial details, intensity of labour is high, the inefficiency cycle is long, the material loss is big, the auxiliary material is with high costs and have seepage potential safety hazard scheduling problem, this is prior art's weak point.

Disclosure of Invention

The invention aims to provide a dangerous waste rigid landfill self-adhesion seepage-proofing barrier system, which is convenient for manufacturing the dangerous waste rigid landfill seepage-proofing system.

The invention adopts the following technical scheme to realize the purpose of the invention:

useless rigidity landfill self-adhesion prevention of seepage barrier system of danger, including landfill pond, self-adhesion geotechnological cloth, bonding area, HDPE geomembrane, galvanized steel sheet layering, the integrative nail of fire control and outer self-adhesive cloth, its characterized in that: the self-adhesive geotextile adopts a special needling process, so that the surface of the self-adhesive geotextile is in a pile loop surface shape, namely a middle loop surface of the fastening tape.

In a further aspect of the present invention, the adhesive tape is a hook-surface tape, the adhesive tape has a width of 70cm to 100cm, and a length set according to a length of the landfill pond.

As a further limitation of the technical scheme, the HDPE geomembrane is subjected to a hot-covering adhesive tape process, the adhesive tapes are attached to the two sides of the HDPE geomembrane at intervals of 1-2 m, and the length of each adhesive tape penetrates through the length of the whole HDPE geomembrane.

As a further limitation of the technical scheme, the width of the galvanized steel sheet batten is 30-50 mm, and the thickness of the galvanized steel sheet batten is not less than 3.0 mm.

As a further limitation of the technical scheme, the size of the fire-fighting integrated nail is not less than 50 mm.

As a further limitation of the technical solution, the step of laying an impermeable structural layer in the landfill pond comprises;

the method comprises the following steps: fixing the self-adhesive geotextile on the wall of the landfill pond, wherein the self-adhesive geotextile is fixed on the wall of the landfill pond through the galvanized steel plate pressing strip, the galvanized steel plate pressing strip is fixedly connected with the wall of the landfill pond through the fire-fighting integrated nail, and the velvet ring surface of the self-adhesive geotextile faces outwards;

step two: the loop surface of the self-adhesive geotextile is bonded with the bonding tape, the bonding tape is fixed on one side of the HDPE geomembrane, the bonding tape is also fixed on the other side of the HDPE geomembrane, and the bonding tape on the HDPE geomembrane is combined with the loop surface of the self-adhesive geotextile to naturally form an effective closed area;

step three: the outer-layer self-adhesive cloth is laid and adhered on the other side of the HDPE geomembrane, and the pile loop surface of the outer-layer self-adhesive cloth faces the HDPE geomembrane, so that the outer-layer geotextile is combined with the adhesive tape on the HDPE geomembrane to form an effective closed area.

Compared with the prior art, the invention has the advantages and positive effects that:

the problems of cross construction (pouring of embedded parts), complex laying and welding construction, high labor intensity, low efficiency, long period, high material loss, high auxiliary material cost, potential leakage safety hazards and the like of the traditional impermeable layer of the hazardous waste rigid landfill are solved;

the laying is simple and convenient, and the construction efficiency is high;

the construction surface is flat and has no cavity bulge phenomenon;

the HDPE geomembrane has no perforation part, can keep the integrity of the material, has no potential safety hazard of leakage, and is environment-friendly and pollution-free.

Drawings

FIG. 1 is a schematic view of the impermeable material for the vertical wall of the landfill pool.

Fig. 2 is a schematic diagram of the landfill pond bottom impermeable material of the invention.

In the figure: 1. the landfill pond, 2, self-adhesion geotechnological cloth, 3, bonding area, 5, integrative nail of fire control, 6, galvanized steel sheet layering, 7, outer self-adhesive cloth.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

As shown in fig. 1-2, the invention comprises a landfill pond 1, a self-adhesive geotextile 2, an adhesive tape 3, a HDPE geomembrane 4, a galvanized steel plate batten 6, a fire-fighting integrated nail 5 and an outer layer self-adhesive cloth 7, wherein the self-adhesive geotextile 2 adopts a special needling process, so that the surface of the self-adhesive geotextile 2 is in a loop surface shape, namely a middle loop surface of a fastening tape, is similar to an adhesive buckle on clothes, and is provided with a loop on one surface, and the loop is adhered on the other surface with hooks and can be opened when being pulled.

The adhesive tape 3 is a hook surface-shaped strip, the width of the adhesive tape 3 is 70 cm-100 cm, and the length of the adhesive tape is set according to the length of the landfill pond.

The HDPE geomembrane 4 is manufactured by a hot-covering adhesive tape process, the adhesive tapes 3 are attached to the two sides of the HDPE geomembrane 4 at intervals of 1-2 m, and the length of each adhesive tape penetrates through the length of the whole HDPE geomembrane.

The width of the galvanized steel sheet batten 6 is 30-50 mm, and the thickness of the galvanized steel sheet batten is not less than 3.0 mm.

The 5-specification fire-fighting integrated nail is not less than 50 mm.

The landfill pool 1 comprises a step of paving an impermeable structural layer in the landfill pool 1;

the method comprises the following steps: fixing the self-adhesive geotextile 2 on the wall of the landfill pond 1, wherein the self-adhesive geotextile 2 is fixed on the wall of the landfill pond 1 through the galvanized steel plate pressing strip 6, the galvanized steel plate pressing strip 6 is fixedly connected with the wall of the landfill pond 1 through the fire-fighting integrated nail 5, and the loop surface of the self-adhesive geotextile 2 faces outwards;

step two: the pile loop surface of the self-adhesive geotextile 2 is bonded with the bonding tape 3, the bonding tape 3 is fixed on one side of the HDPE geomembrane 4, the bonding tape 3 is also fixed on the other side of the HDPE geomembrane 4, and the bonding tape on the HDPE geomembrane 4 is combined with the pile loop surface of the self-adhesive geotextile 2 to naturally form an effective closed area;

step three: the outer-layer self-adhesive cloth 7 is laid and adhered on the other side of the HDPE geomembrane 4, and the pile loop surface of the outer-layer self-adhesive cloth 7 faces the HDPE geomembrane 4, so that an effective closed area is formed after the outer-layer geotextile 7 is combined with the adhesive tape 3 on the HDPE geomembrane 4.

The working process of the invention is as follows:

firstly, the self-adhesive geotextile 2 is fixed on the wall of a landfill pond 1, the self-adhesive geotextile 2 is fixed on the wall of the landfill pond 1 through a galvanized steel plate pressing strip 6, the galvanized steel plate pressing strip 6 is fixedly connected with the wall of the landfill pond 1 through a fire-fighting integrated nail 5, a loop face of the self-adhesive geotextile 2 faces outwards, then the loop face of the self-adhesive geotextile 2 is bonded with a bonding strip 3, the bonding strip 3 on the HDPE geomembrane 4 is combined with the loop face of the self-adhesive geotextile 2 to naturally form an effective closed area, then the bonding outer-layer self-adhesive cloth 7 is laid on the other side of the HDPE geomembrane 4, the loop face of the outer-layer self-adhesive cloth 7 faces the HDPE geomembrane 4, and the bonding strip 3 on the outer-layer geotextile 7 and the HDPE geomembrane 4 are combined to form the effective closed area.

The above disclosure is only one specific embodiment of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.