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HDPE impermeable membrane used in Huoshenshan Hospital and Leishenshan Hospital

HDPE impermeable membrane used in Huoshenshan Hospital and Leishenshan Hospital

  • Categories:Industry News
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  • Time of issue:2020-03-26
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(Summary description)Although the Vulcan Mountain and Leishen Mountain Hospitals are temporary hospitals built to fight the epidemic, they are not “temporary” at all in the waste water treatment area: fully enclosed operation, three-level liquid chlorine disinfection and pumping to the municipal pipe network; press below the entire base The standard laying of HDPE impermeable membrane in the landfill is like putting on “protective clothing”. Rainwater is collected and disinfected, preventing a drop of sewage from entering the ground.

HDPE impermeable membrane used in Huoshenshan Hospital and Leishenshan Hospital

(Summary description)Although the Vulcan Mountain and Leishen Mountain Hospitals are temporary hospitals built to fight the epidemic, they are not “temporary” at all in the waste water treatment area: fully enclosed operation, three-level liquid chlorine disinfection and pumping to the municipal pipe network; press below the entire base The standard laying of HDPE impermeable membrane in the landfill is like putting on “protective clothing”. Rainwater is collected and disinfected, preventing a drop of sewage from entering the ground.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-03-26
  • Views:0
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Although the Vulcan Mountain and Leishen Mountain Hospitals are temporary hospitals built to fight the epidemic, they are not “temporary” at all in the waste water treatment area: fully enclosed operation, three-level liquid chlorine disinfection and pumping to the municipal pipe network; press below the entire base The standard laying of HDPE impermeable membrane in the landfill is like putting on “protective clothing”. Rainwater is collected and disinfected, preventing a drop of sewage from entering the ground.

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▲ The picture shows that the Huoshenshan Hospital is laying geotextiles and HDPE impervious membranes. The 30,000 square meters HDPE impervious membrane puts "protective clothing" on the 25,000 square meters underground foundation of the Huoshenshan Hospital to ensure that no drop of sewage enters the ground.

The construction of the hospital is based on the standard of the waste landfill site, and the construction structure is a "two-cloth, one-membrane" structure, that is, "two layers of geotextile and one layer of HDPE impervious membrane". On the leveled ground, lay sand with a thickness of 20 cm, and intersperse it with the pipeline, and then “two cloths and one membrane”-two layers of geotextiles and a layer of HDPE impermeable membrane will be laid on it, and then Laying 20 cm sand, has a strong anti-seepage effect.

The specification of geotextile used in this hospital is 600g/m2 polypropylene filament geotextile, and the specification of HDPE impermeable membrane is 2.0mm impermeable membrane

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▲ Exploded view of impermeable layer

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▲ Geotextile

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▲ HDPE impermeable membrane

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▲ Construction of "Two Cloths and One Membrane" Structure

HDPE impermeable membrane, also known as HDPE geomembrane, the full name of high-density polyethylene geomembrane, is the use of polyethylene virgin resin (with high-density polyethylene as the main component) with a certain proportion of carbon black black masterbatch, anti-aging agent, anti- Oxidizers, ultraviolet absorbers, stabilizers, etc., are blow molded by single-layer, double-layer, and three-layer co-extrusion technology. It is a kind of anti-seepage effect, acid and alkali resistance, corrosion resistance, high tensile strength, and long service life. Impermeable material. It is suitable for engineering anti-seepage, anti-seepage of sewage pond, anti-seepage of garbage landfill, anti-seepage of tailings treatment site, anti-seepage of solid waste landfill and other projects.

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HDPE geomembrane selection, testing and construction mainly refer to technical standards: "Geosynthetic Polyethylene Geomembrane", "Technical Specification for Polyethylene (PE) Geomembrane Impermeability Engineering", "Technical Specification for Application of Geosynthetics", "Geosynthetics" Material testing procedures.

HDPE geomembrane, the connection adopts hot-melt welding, the welding seam strength is high, the welding performance is good, and it has a high impermeability coefficient (1×10~17cm/s); it has good heat resistance and cold resistance, and its use environment temperature It is high temperature 110℃, low temperature -70℃; has good chemical stability, can withstand more than 80 kinds of strong acids, alkalis and other chemical corrosion; has high tensile strength, has high tensile strength, and can meet high standard engineering Project needs; It has strong weather resistance, strong anti-aging performance, can be exposed for a long time and maintain the original performance; good overall performance, has strong tensile strength and elongation at break, can be used in a variety of Used under different harsh geological and climatic conditions, the geological uneven settlement has strong strain.

The HDPE impermeable membrane is connected by hot-melt welding, which uses its own connection to form a completely closed integral impermeable body, with high weld strength and good welding performance. The principle is to use the electric soldering iron in the welder to heat both sides of the geomembrane to melt the surface of the geomembrane, and the upper and lower rollers squeeze the two layers of geomembrane to connect them together.

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➤ Detection

After the HDPE impermeable membrane is welded, the following parts should be inspected: all welds, weld joints, damaged repair parts, missing welds, virtual welds repaired welds, and the previous inspection failed to be repaired again. After the HDPE impermeable membrane is welded, it should be covered with a protective layer in time to avoid material aging caused by direct sunlight. When the slope of the slope is large due to instability and it is not easy to lay the protective layer of soil or sand, the construction method of spraying concrete protective layer can be adopted. The sprayed concrete should be set with deformation joints according to the design requirements, and water should be sprayed in time to prevent the cracking of the concrete layer from affecting the protection effect. If plain soil and sand cushions are used, they should be compacted or mixed with other consolidating improved materials to harden the cover and prevent rain erosion and expose the impermeable membrane. The following requirements shall be met during the construction of the protective layer:

1. After the HDPE impermeable membrane is laid and welded qualified, the protective layer should be filled in time, and the speed of filling the protective layer should be compatible with the speed of laying the HDPE impermeable membrane;

2. The thickness of the protective layer should be more than 10cm;

3. The material of the protective layer should meet the design requirements, and there should be no sharp objects or debris that can easily pierce the HDPE impermeable membrane.

The anti-seepage construction is completed. In order to test the integrity and anti-seepage effect and quality of the anti-seepage project, the method of on-site integrity anti-seepage detection is adopted internationally. Our company is at the forefront of the industry and the field in terms of integrity anti-seepage detection technology. Introducing American authoritative technology and relying on its own years of research and development experience, and fully adapting to the various complex environments of domestic anti-seepage projects to conduct integrity and anti-seepage inspections for anti-seepage projects. Our company-Shandong Jianbiao Technology Testing and Inspection Co., Ltd. (abbreviated as JBJC) 0531- 82953188 is a testing and testing organization with CMA testing qualification approved by the State Administration of Quality and Technical Supervision and established in accordance with the law. In order to ensure the ecological safety of environmental protection projects, it is engaged in the detection of environmental protection related materials such as building waterproof materials and geosynthetics, and the leakage detection of anti-seepage engineering anti-seepage systems. With the large-scale application of anti-seepage materials and building waterproof materials in related projects, the safety of project leakage directly affects the safety and quality of the project. Leakage detection can objectively, fairly, scientifically and effectively supervise the project quality to truly ensure anti-seepage The quality and safety of the project.

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