WO2021174818A1 - Composite hdpe membrane-based prevention and control system for emergency facility base, and construction method - Google Patents

Composite hdpe membrane-based prevention and control system for emergency facility base, and construction method Download PDF

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Publication number
WO2021174818A1
WO2021174818A1 PCT/CN2020/118026 CN2020118026W WO2021174818A1 WO 2021174818 A1 WO2021174818 A1 WO 2021174818A1 CN 2020118026 W CN2020118026 W CN 2020118026W WO 2021174818 A1 WO2021174818 A1 WO 2021174818A1
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hdpe
welding
prevention
control system
composite
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PCT/CN2020/118026
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French (fr)
Chinese (zh)
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甄胜利
罗彬�
齐长青
陈望明
陈鹏
何义军
冯坤
张蒙纳
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北京高能时代环境技术股份有限公司
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Publication of WO2021174818A1 publication Critical patent/WO2021174818A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B29C66/0324—Reforming or reshaping the joint, e.g. folding over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/004—Sealing liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets

Definitions

  • the invention relates to the technical field of emergency prevention and control, in particular to a composite HDPE film prevention and control system and a construction method for an emergency facility base, such as an epidemic emergency facility base.
  • the medical facilities used in the emergency base mainly include medical waste water, medical waste disposal facilities and places for temporary storage of medical waste, etc., and medical waste, medical waste water, infectious waste and domestic life Garbage and other pollutants are highly corrosive, toxic, radioactive, and infectious.
  • a prevention and control system must be quickly established to efficiently prevent and control pollutants, prevent the serious impact of pollutants on the surrounding environment, and ensure the safety of soil, groundwater, and personnel.
  • HDPE membrane anti-seepage construction technology and QA/QC management technology are mature in the field of solid waste landfills, but None of them can meet the requirements of high emergency project standards, short construction period, cross-process protection, and easy base quality control; therefore, how to protect the finished product of the prevention and control system, how to realize the rapid connection and quality assurance of the prevention and control system, and how to quickly realize the prevention and control system.
  • the quality control of the control system needs to further optimize the entire prevention and control system in terms of material selection, construction technology, equipment parameters, and quality inspection.
  • the present invention provides a composite HDPE film prevention and control system and construction method for emergency facility bases.
  • the invention discloses a composite HDPE membrane prevention and control system for emergency facility bases, including:
  • the composite HDPE membrane prevention and control material is a two-cloth and one-membrane compounded on-site, and the two-cloth and one-membrane is composed of an enhanced HDPE geomembrane and a widened geotextile;
  • the rapid splicing process includes the welding process of the reinforced HDPE geomembrane and the lap process of the widened geotextile.
  • the welding temperature of the welding process is 400°C to 420°C, and the welding speed is 3m/min to 6m/min;
  • the welding seam detection process includes a one-time pressurization and pressure relief detection method for a long weld, the inflation pressure of the one-time pressurization and pressure relief detection method for a long weld is ⁇ 300KPa, and the duration is ⁇ 1min;
  • the universal patch member is extrusion welding of a double-layer HDPE film.
  • the width of the reinforced HDPE geomembrane is ⁇ 700cm, the elongation at break ⁇ 800%, and the right-angle tear strength ⁇ 250N;
  • the widened geotextile is polypropylene filament geotextile, the width of the widened geotextile is 420cm ⁇ 450cm, the lap width of the lap process is 20cm ⁇ 50cm, and the weight is 500 ⁇ 800g /m 2 , breaking elongation ⁇ 100%, bursting strength ⁇ 7000N, trapezoidal tearing strength ⁇ 1000N;
  • the anti-permeability coefficient of the composite HDPE film prevention and control material reaches 1.0 ⁇ 10 -12 cm/s.
  • the width of the reinforced HDPE geomembrane is 800 cm
  • the width of the widened geotextile is 430 cm
  • the overlap width of the overlap process is 30 cm.
  • the welding temperature of the welding process is 420° C., and the welding speed is 5 m/min, and the reinforced HDPE geomembrane is fast hot-melt welding.
  • the method for detecting the one-time pressurization and pressure release of the full-length weld is to use a rapid pressurization and pressure release device and a supporting pressure facility to perform completeness detection of the full-length weld one-time pressurization and rapid pressure release.
  • the one-time pressure relief detection method for the full-length weld includes:
  • the welding seam detection process also includes a hand-held single-cut surface rapid peeling detection method
  • the hand-held single-cut surface rapid peeling detection method is to perform peeling detection along the edge of the weld, and the peeling detection is that the weld is not allowed to have "fish mouths”.
  • the method for extrusion welding of the double-layer HDPE film includes:
  • the prefabricated second layer of HDPE film is covered with the first layer of HDPE film, and the second layer is reinforced and welded to realize the extrusion welding of the double layer of HDPE film.
  • the second layer of HDPE film needs to extend at least 20 cm from the edge of the first layer of HDPE film.
  • the invention also provides a construction method of the composite HDPE film prevention and control system, which includes:
  • the upper widened geotextile is laid, and two adjacent widened geotextiles are overlapped.
  • the invention upgrades the product protection, rapid connection and detection of the prevention and control system through material selection, base rapid splicing process design, base rapid detection method design, and universal patch component design for the HDPE film prevention and control system, and finally realizes the emergency facility base High-efficiency pollution prevention and control; it has the advantages of high standards, high efficiency, short construction period, strong plasticity, and easy base quality control.
  • Figure 1 is a block diagram of a composite HDPE film prevention and control system for emergency facility bases disclosed in an embodiment of the present invention
  • Fig. 2 is a schematic diagram of a rapid detection of pressure relief for a full-length weld seam disclosed in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a hand-held single-section rapid peeling detection disclosed in an embodiment of the present invention.
  • Fig. 4 is a schematic diagram of welding of a universal dual-patch component disclosed in an embodiment of the present invention.
  • the present invention provides a composite HDPE membrane prevention and control system for emergency facility bases and a construction method.
  • the composite HDPE membrane prevention and control system aims to achieve anti-seepage, waterproof, moisture-proof, and protective effects, that is, to completely block the production of emergency facility bases.
  • Medical waste, medical waste water, infectious waste, etc. pollute the soil and groundwater and spread the epidemic; prevent the impact of groundwater on emergency facilities, play a role in moisture prevention; at the same time, the composite HDPE membrane prevention and control system of the present invention is also fully designed The potential corrosiveness, toxicity, infectivity and even radioactivity of emergency facilities are considered.
  • the present invention provides a composite HDPE film prevention and control system for emergency facility bases, which is divided into four major processes, which in turn include:
  • the composite HDPE membrane prevention and control material of the present invention is a two-cloth and one-membrane compounded on-site, which can ensure the highest impermeability protection standard, with an impermeability coefficient of 1.0 ⁇ 10 -12 cm/s. At the same time, it has corrosion resistance, anti-toxicity, and anti-permeability. Radioactivity and strong infectivity; two fabrics and one membrane are composed of reinforced HDPE geomembrane and widened geotextile;
  • the reinforced HDPE geomembrane of the present invention has a width of ⁇ 700m, preferably 800m, an elongation at break ⁇ 800%, and an anti-orthogonal tear strength ⁇ 250N; wherein the thickness of the reinforced HDPE geomembrane is 2.0mm, and the width is 800m, better than the conventional design with a width of 650cm, reducing the weld between the two films; elongation at break ⁇ 800%, anti-right angle tearing strength ⁇ 250N, can effectively resist uneven settlement and external stress, which is beneficial to the whole Quality control of the prevention and control system.
  • the widened geotextile of the present invention is polypropylene filament geotextile, the width of the widened geotextile is 420cm ⁇ 450cm, preferably 430cm; the lap width of the overlap process is 20cm ⁇ 50cm, preferably 30cm;
  • the weight is 500-800g/m 2 , preferably 600g/m 2 ; the elongation at break is ⁇ 100%, the bursting strength is ⁇ 7000N, and the trapezoidal tearing strength is ⁇ 1000N; among them, the performance of the widened geotextile of the present invention can be
  • the HDPE film is fully protected; at the same time, one end of the widened geotextile is widened by 30cm on the basis of the original width of 400cm, so that the width can reach 430cm, which is easy for quick overlap and quality assurance of the geotextile.
  • the fast splicing process of the present invention includes the welding process of the reinforced HDPE geomembrane and the overlap process of the widened geotextile;
  • the welding process of the reinforced HDPE geomembrane of the present invention is the geomembrane wide film width, high constant temperature and fast speed enhanced hot melt welding, the welding temperature is 400°C ⁇ 420°C, and the welding speed is 3m/min ⁇ 6m/min; , Preferably, the welding temperature is 420°C, and the welding travel speed is 5m/min, and the reinforced HDPE geomembrane is fast hot-melt welding.
  • the lap width of the lap joint process of the present invention is the increased width of the widened geotextile, that is, the 30cm widened lap between the width of the geotextile.
  • the welding seam detection process of the present invention includes a one-time pressure relief detection method for a full-length welding seam and a hand-held single-cut surface rapid peeling detection method.
  • the one-time pressurization and pressure relief detection method for the full-length weld of the present invention is a large-area rapid detection of double welds after hot-melt welding, that is, the rapid pressurization and pressure relief device and supporting pressure facilities are used to quickly pressurize the full-length weld at one time Integrity test for pressure relief, the inflation pressure is ⁇ 300KPa, and the duration is ⁇ 1min.
  • the specific method for detecting the pressure and pressure relief of a full-length weld at a time includes: sealing both ends (24 and 27) of the full-length weld cavity and connecting the air pressure detection of the gas supply device 21
  • the device 22 inserts the needle 23 into the cavity 24 at about 10 cm from the inner side 25 of the cavity 24, and pressurizes the weld air cavity 26 to 300 kPa with the air pressure detection device 22, maintains it for more than 1 minute, and ensures that the air pressure is not less than 300 kPa.
  • One end 27 is vented, and the pointer of the barometer 28 can be quickly returned to zero to be deemed qualified. Finally, the cuts 25 and 27 are repaired and closed.
  • the hand-held single-cut surface rapid peeling detection method of the present invention uses a handheld single-cut surface rapid peeling detector 31 to perform rapid peeling detection along the edge of the weld 32, and the weld 32 does not allow "fish mouth" 33 to appear.
  • the universal patch component is double-layer HDPE film extrusion welding, which is suitable for reinforcement welding of HDPE film in weak parts such as T-seam and damage caused by man-made defects.
  • the second layer of HDPE film must extend beyond the edge of the first layer of HDPE film at least 20cm to ensure the quality of the reinforcement system.
  • the dual-patch HDPE film welding of the present invention realizes high-efficiency extrusion welding through prefabricated modules, that is, the cutting, wiping, and roughening of the HDPE film have been completed before the HDPE reinforcement film is welded. Roughly weld the parts 42 that do not have double seam welding 41 within the range of weak parts such as T-seam, damage caused by man-made defects, and cover the T-seam with the prefabricated first layer of HDPE film module (50cm ⁇ 50cm) 43. Layer reinforcement welding 44, and then the prefabricated second layer HDPE film module (70cm ⁇ 70cm) 45 is covered with the first layer HDPE film, and the second layer reinforcement welding 46 is performed to quickly realize double patch welding.
  • the present invention provides a construction method of the composite HDPE membrane prevention and control system, which includes:
  • Double-layer HDPE membrane is used to strengthen and weld the damaged parts of the reinforced HDPE geomembrane or the parts that cannot be double-sealed welding;
  • the design and parameter optimization of the one-time pressurization rapid pressure relief detection method for the long weld and the handheld single-section rapid peeling detection method can realize the rapid detection of the emergency project prevention and control system, which is convenient to operate and has a good detection effect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
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Abstract

Disclosed are a composite HDPE membrane-based prevention and control system for an emergency facility base, and a construction method. The system comprises: selection to a modular composite HDPE membrane-based prevention and control material: the composite HDPE membrane-based prevention and control material comprises two pieces of geotextile and one membrane which are compounded on site, and the two pieces of geotextile and one membrane refer to an enhanced HDPE geomembrane and widened geotextile; a quick assembly process: the quick assembly process comprises a welding process for the enhanced HDPE geomembrane and an overlapping process for the widened geotextile; a welding seam detection process: the welding seam detection process comprises a through welding seam primary pressurization and depressurization detection method; and a universal patch component: the universal patch component is formed by extruding and welding double layers of HDPE membranes. According to the present invention, by means of said design, finished product protection, quick connection and detection of the prevention and control system can be upgraded, and efficient contamination prevention and control for an emergency facility base is finally achieved; the present invention has the advantages of a high standard, high efficiency, a short construction period, high practicability, and easiness in base quality control.

Description

一种用于应急设施基地的复合HDPE膜防控系统及施工方法A composite HDPE film prevention and control system for emergency facility base and construction method 技术领域Technical field
本发明涉及应急防控技术领域，具体涉及一种用于应急设施基地的复合HDPE膜防控系统及施工方法，该应急设施基地如疫情应急设施基地。The invention relates to the technical field of emergency prevention and control, in particular to a composite HDPE film prevention and control system and a construction method for an emergency facility base, such as an epidemic emergency facility base.
背景技术Background technique
在疫情防控过程中，用于应急基地的医疗设施主要包括医疗废水、医疗废弃物处置设施以及用于暂存医疗废弃物的场所等，产生的医疗垃圾、医疗废水、传染性废弃物及生活垃圾等污染物腐蚀性、毒性、放射性及传染性强，必须快速建立防控系统对污染物进行高效防控，阻止污染物对周边环境的严重影响，保障土壤和地下水以及人员的安全。In the process of epidemic prevention and control, the medical facilities used in the emergency base mainly include medical waste water, medical waste disposal facilities and places for temporary storage of medical waste, etc., and medical waste, medical waste water, infectious waste and domestic life Garbage and other pollutants are highly corrosive, toxic, radioactive, and infectious. A prevention and control system must be quickly established to efficiently prevent and control pollutants, prevent the serious impact of pollutants on the surrounding environment, and ensure the safety of soil, groundwater, and personnel.
目前，在常规医疗废物处置领域，HDPE膜虽然有应用但不够系统化、规模化；相比而言，HDPE膜防渗施工工艺以及QA/QC管理技术在固废填埋场领域很成熟，但均无法满足应急项目标准高、工期短、工序交叉防护、易于基地质量控制等要求；因此，如何做好防控系统的成品保护，如何实现防控系统的快速连接与质量保证，如何快速实现防控系统的质量控制，需进一步从材料选择、施工工艺、设备参数、质量检测等方面优化整个防控系统。At present, in the field of conventional medical waste disposal, although HDPE membrane has applications, it is not systematic and large-scale; in contrast, HDPE membrane anti-seepage construction technology and QA/QC management technology are mature in the field of solid waste landfills, but None of them can meet the requirements of high emergency project standards, short construction period, cross-process protection, and easy base quality control; therefore, how to protect the finished product of the prevention and control system, how to realize the rapid connection and quality assurance of the prevention and control system, and how to quickly realize the prevention and control system. The quality control of the control system needs to further optimize the entire prevention and control system in terms of material selection, construction technology, equipment parameters, and quality inspection.
发明内容Summary of the invention
为了解决上述技术问题，本发明提供一种用于应急设施基地的复合HDPE膜防控系统及施工方法。In order to solve the above technical problems, the present invention provides a composite HDPE film prevention and control system and construction method for emergency facility bases.
本发明公开了一种用于应急设施基地的复合HDPE膜防控系统，包括：The invention discloses a composite HDPE membrane prevention and control system for emergency facility bases, including:
选择模块化复合HDPE膜防控材料：Choose modular composite HDPE film prevention and control materials:
所述复合HDPE膜防控材料为现场复合的两布一膜，所述两布一膜由增强型HDPE土工膜和加宽型土工布构成；The composite HDPE membrane prevention and control material is a two-cloth and one-membrane compounded on-site, and the two-cloth and one-membrane is composed of an enhanced HDPE geomembrane and a widened geotextile;
快速拼接工艺：Quick splicing process:
所述快速拼接工艺包括所述增强型HDPE土工膜的焊接工艺和所述加宽型土工布的搭接工艺，所述焊接工艺的焊接温度为400℃～420℃，焊接速度为3m/min～6m/min；The rapid splicing process includes the welding process of the reinforced HDPE geomembrane and the lap process of the widened geotextile. The welding temperature of the welding process is 400°C to 420°C, and the welding speed is 3m/min to 6m/min;
焊缝检测工艺：Welding seam inspection process:
所述焊缝检测工艺包括通长焊缝一次加压泄压检测方法，所述通长焊缝一次加压泄压检测方法的充气压强≥300KPa，持续时间≥1min；The welding seam detection process includes a one-time pressurization and pressure relief detection method for a long weld, the inflation pressure of the one-time pressurization and pressure relief detection method for a long weld is ≥300KPa, and the duration is ≥1min;
通用性补丁构件：General patch components:
所述通用性补丁构件为双层HDPE膜挤压焊接。The universal patch member is extrusion welding of a double-layer HDPE film.
作为本发明的进一步改进，所述增强型HDPE土工膜的幅宽为≥700cm，断裂伸长率≥800％，抗直角撕裂强度≥250N；As a further improvement of the present invention, the width of the reinforced HDPE geomembrane is ≥700cm, the elongation at break ≥800%, and the right-angle tear strength ≥250N;
所述加宽型土工布为聚丙烯长丝土工布，所述加宽型土工布的幅宽为420cm～450cm，所述搭接工艺的搭接宽度为20cm～50cm，克重为500～800g/m 2，断裂伸长率≥100％，顶破强力≥7000N，梯形撕裂强力≥1000N； The widened geotextile is polypropylene filament geotextile, the width of the widened geotextile is 420cm～450cm, the lap width of the lap process is 20cm～50cm, and the weight is 500～800g /m 2 , breaking elongation ≥100%, bursting strength ≥7000N, trapezoidal tearing strength ≥1000N;
所述复合HDPE膜防控材料的抗渗系数达1.0×10 -12cm/s。 The anti-permeability coefficient of the composite HDPE film prevention and control material reaches 1.0×10 -12 cm/s.
作为本发明的进一步改进，所述增强型HDPE土工膜的幅宽为800cm，所述加宽型土工布的幅宽为430cm，所述搭接工艺的搭接宽度为30cm。As a further improvement of the present invention, the width of the reinforced HDPE geomembrane is 800 cm, the width of the widened geotextile is 430 cm, and the overlap width of the overlap process is 30 cm.
作为本发明的进一步改进，所述焊接工艺的焊接温度为420℃，焊接速度为5m/min，对所述增强型HDPE土工膜进行快速热熔焊接。As a further improvement of the present invention, the welding temperature of the welding process is 420° C., and the welding speed is 5 m/min, and the reinforced HDPE geomembrane is fast hot-melt welding.
作为本发明的进一步改进，所述通长焊缝一次加压泄压检测方法为采用快速加压泄压装置与配套压力设施对通长焊缝一次加压快速泄压进行完整性检测。As a further improvement of the present invention, the method for detecting the one-time pressurization and pressure release of the full-length weld is to use a rapid pressurization and pressure release device and a supporting pressure facility to perform completeness detection of the full-length weld one-time pressurization and rapid pressure release.
作为本发明的进一步改进，所述通长焊缝一次加压泄压检测方法包括：As a further improvement of the present invention, the one-time pressure relief detection method for the full-length weld includes:
将通长的焊缝空腔两端封住，连接好供气装置的气压检测设备；将针头插入一侧空腔内侧预设位置处，用气压检测设备对焊缝气腔加压至300kPa，维持1min以上，气压不低于300kPa，然后在焊缝的另一侧开孔放气，气压表指针迅速归零则视为合格，最后对切口进行补焊封闭。Seal both ends of the long weld cavity and connect the air pressure detection equipment of the air supply device; insert the needle into the preset position inside the cavity on one side, and use the air pressure detection equipment to pressurize the weld air cavity to 300kPa, Maintain for more than 1 min, the air pressure is not less than 300kPa, and then open a hole on the other side of the weld to vent, the barometer pointer quickly returns to zero, it is deemed qualified, and finally the cut is repaired and closed.
作为本发明的进一步改进，所述焊缝检测工艺还包括手持式单切面快速剥离检测方法；As a further improvement of the present invention, the welding seam detection process also includes a hand-held single-cut surface rapid peeling detection method;
所述手持式单切面快速剥离检测方法为沿着焊缝边缘进行剥离检测，所述剥离检测为焊缝不允许出现“鱼嘴”。The hand-held single-cut surface rapid peeling detection method is to perform peeling detection along the edge of the weld, and the peeling detection is that the weld is not allowed to have "fish mouths".
作为本发明的进一步改进，所述双层HDPE膜挤压焊接的方法包括：As a further improvement of the present invention, the method for extrusion welding of the double-layer HDPE film includes:
预制已完成裁膜、擦拭、打毛的双层HDPE膜；Pre-fabricated double-layer HDPE film that has been cut, wiped, and roughed;
对所述增强型HDPE土工膜破损部位或者无法进行双缝焊接的部位打毛 焊接；Rough welding the damaged parts of the reinforced HDPE geomembrane or parts that cannot be double-sealed welding;
将预制好的第一层HDPE膜覆盖上述部位，进行第一层补强焊接；Cover the above-mentioned parts with the prefabricated first layer of HDPE film, and perform the first layer of reinforcement welding;
将预制好的第二层HDPE膜覆盖第一层HDPE膜，进行第二层补强焊接，实现双层HDPE膜挤压焊接。The prefabricated second layer of HDPE film is covered with the first layer of HDPE film, and the second layer is reinforced and welded to realize the extrusion welding of the double layer of HDPE film.
作为本发明的进一步改进，第二层HDPE膜需超出第一层HDPE膜的边缘至少20cm。As a further improvement of the present invention, the second layer of HDPE film needs to extend at least 20 cm from the edge of the first layer of HDPE film.
本发明还提供一种复合HDPE膜防控系统的施工方法，包括：The invention also provides a construction method of the composite HDPE film prevention and control system, which includes:
铺设底层的加宽型土工布，相邻两所述加宽型土工布进行搭接；Lay the widened geotextile on the bottom layer, and overlap the two adjacent widened geotextiles;
铺设中间层的增强型HDPE土工膜，相邻两所述增强型HDPE土工膜进行焊接；Lay the enhanced HDPE geomembrane of the middle layer, and weld two adjacent ones of the enhanced HDPE geomembrane;
采用通长焊缝一次加压泄压检测方法和/或手持式单切面快速剥离检测方法对HDPE土工膜的焊缝进行检测；Use the one-time pressure relief detection method of the long weld and/or the hand-held single-section rapid peeling test method to detect the weld of the HDPE geomembrane;
采用双层HDPE膜对所述增强型HDPE土工膜破损部位或者无法进行双缝焊接的部位进行补强焊接；Using a double-layer HDPE membrane to reinforce the damaged parts of the enhanced HDPE geomembrane or the parts that cannot be double-sealed welding;
铺设上层的加宽型土工布，相邻两所述加宽型土工布进行搭接。The upper widened geotextile is laid, and two adjacent widened geotextiles are overlapped.
与现有技术相比，本发明的有益效果为：Compared with the prior art, the beneficial effects of the present invention are:
本发明通过对HDPE膜防控系统进行材料选择、基地快速拼接工艺设计、基地快速检测方法设计、通用性补丁构件设计，来升级防控系统的成品保护、快速连接与检测，最终实现应急设施基地的高效污染防控；具有高标准、高效率、工期短、可塑性强、易于基地质量控制的优点。The invention upgrades the product protection, rapid connection and detection of the prevention and control system through material selection, base rapid splicing process design, base rapid detection method design, and universal patch component design for the HDPE film prevention and control system, and finally realizes the emergency facility base High-efficiency pollution prevention and control; it has the advantages of high standards, high efficiency, short construction period, strong plasticity, and easy base quality control.
附图说明Description of the drawings
图1为本发明一种实施例公开的用于应急设施基地的复合HDPE膜防控系统的框图；Figure 1 is a block diagram of a composite HDPE film prevention and control system for emergency facility bases disclosed in an embodiment of the present invention;
图2为本发明一种实施例公开的通长焊缝一次加压泄压快速检测示意图；Fig. 2 is a schematic diagram of a rapid detection of pressure relief for a full-length weld seam disclosed in an embodiment of the present invention;
图3为本发明一种实施例公开的手持式单切面快速剥离检测示意图；3 is a schematic diagram of a hand-held single-section rapid peeling detection disclosed in an embodiment of the present invention;
图4为本发明一种实施例公开的通用性双补丁构件焊接示意图。Fig. 4 is a schematic diagram of welding of a universal dual-patch component disclosed in an embodiment of the present invention.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发 明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
下面结合附图对本发明做进一步的详细描述：The present invention will be further described in detail below in conjunction with the accompanying drawings:
本发明提供一种用于应急设施基地的复合HDPE膜防控系统及施工方法，该复合HDPE膜防控系统的目的为达到防渗、防水、防潮、防护的作用，即完全阻隔应急设施基地产生的医疗垃圾、医疗废水、传染性废弃物等对土壤和地下水的污染和疫情扩散；防止地下水对应急设施的影响，起到防潮作用；同时，本发明的复合HDPE膜防控系统的设计也充分考虑了应急设施潜在的腐蚀性、毒性、传染性甚至放射性。The present invention provides a composite HDPE membrane prevention and control system for emergency facility bases and a construction method. The composite HDPE membrane prevention and control system aims to achieve anti-seepage, waterproof, moisture-proof, and protective effects, that is, to completely block the production of emergency facility bases. Medical waste, medical waste water, infectious waste, etc. pollute the soil and groundwater and spread the epidemic; prevent the impact of groundwater on emergency facilities, play a role in moisture prevention; at the same time, the composite HDPE membrane prevention and control system of the present invention is also fully designed The potential corrosiveness, toxicity, infectivity and even radioactivity of emergency facilities are considered.
如图1所示，本发明提供一种用于应急设施基地的复合HDPE膜防控系统，分为四大工序，依次包括：As shown in Figure 1, the present invention provides a composite HDPE film prevention and control system for emergency facility bases, which is divided into four major processes, which in turn include:
1、选择模块化复合HDPE膜防控材料：1. Choose modular composite HDPE film prevention and control materials:
本发明的复合HDPE膜防控材料为现场复合的两布一膜，可保证最高的抗渗防护标准，抗渗系数1.0×10 -12cm/s，同时，具备耐腐蚀性、抗毒性、防放射性、及隔传染性强的特性；两布一膜由增强型HDPE土工膜和加宽型土工布构成； The composite HDPE membrane prevention and control material of the present invention is a two-cloth and one-membrane compounded on-site, which can ensure the highest impermeability protection standard, with an impermeability coefficient of 1.0×10 -12 cm/s. At the same time, it has corrosion resistance, anti-toxicity, and anti-permeability. Radioactivity and strong infectivity; two fabrics and one membrane are composed of reinforced HDPE geomembrane and widened geotextile;
具体的：specific:
本发明的增强型HDPE土工膜的幅宽为≥700m，优选为800m，断裂伸长率≥800％，抗直角撕裂强度≥250N；其中，增强型HDPE土工膜厚度为2.0mm，幅宽为800m，优于常规幅宽650cm的设计，减少两幅膜之间的焊缝；断裂伸长率≥800％，抗直角撕裂强度≥250N，能有效抵抗不均匀沉降与外界应力，有利于整个防控系统的质量控制。The reinforced HDPE geomembrane of the present invention has a width of ≥700m, preferably 800m, an elongation at break ≥800%, and an anti-orthogonal tear strength ≥250N; wherein the thickness of the reinforced HDPE geomembrane is 2.0mm, and the width is 800m, better than the conventional design with a width of 650cm, reducing the weld between the two films; elongation at break ≥800%, anti-right angle tearing strength ≥250N, can effectively resist uneven settlement and external stress, which is beneficial to the whole Quality control of the prevention and control system.
本发明的加宽型土工布为聚丙烯长丝土工布，加宽型土工布的幅宽为420cm～450cm，优选为430cm；搭接工艺的搭接宽度为20cm～50cm，优选为30cm；克重为500～800g/m 2，优选为600g/m 2；断裂伸长率≥100％，顶破强力≥7000N，梯形撕裂强力≥1000N；其中，本发明上述加宽型土工布的性能可全方位保护HDPE膜；同时，加宽型土工布一端在原有400cm幅宽的基础上加宽30cm，使幅宽达到430cm，易于土工布的快速搭接与质量保证。 The widened geotextile of the present invention is polypropylene filament geotextile, the width of the widened geotextile is 420cm～450cm, preferably 430cm; the lap width of the overlap process is 20cm～50cm, preferably 30cm; The weight is 500-800g/m 2 , preferably 600g/m 2 ; the elongation at break is ≥100%, the bursting strength is ≥7000N, and the trapezoidal tearing strength is ≥1000N; among them, the performance of the widened geotextile of the present invention can be The HDPE film is fully protected; at the same time, one end of the widened geotextile is widened by 30cm on the basis of the original width of 400cm, so that the width can reach 430cm, which is easy for quick overlap and quality assurance of the geotextile.
2、快速拼接工艺：2. Quick splicing process:
本发明的快速拼接工艺包括增强型HDPE土工膜的焊接工艺和加宽型土工布的搭接工艺；The fast splicing process of the present invention includes the welding process of the reinforced HDPE geomembrane and the overlap process of the widened geotextile;
具体的：specific:
本发明的增强型HDPE土工膜的焊接工艺为土工膜宽膜幅高恒温快行速增强型热熔法焊接，焊接温度为400℃～420℃，焊接速度为3m/min～6m/min；其中，优选焊接温度为420℃，焊接行进速度为5m/min，对增强型HDPE土工膜进行快速热熔焊接。The welding process of the reinforced HDPE geomembrane of the present invention is the geomembrane wide film width, high constant temperature and fast speed enhanced hot melt welding, the welding temperature is 400℃～420℃, and the welding speed is 3m/min～6m/min; , Preferably, the welding temperature is 420°C, and the welding travel speed is 5m/min, and the reinforced HDPE geomembrane is fast hot-melt welding.
本发明搭接工艺的搭接宽度为加宽型土工布增加的幅宽，即对土工布布幅间30cm加宽搭接。The lap width of the lap joint process of the present invention is the increased width of the widened geotextile, that is, the 30cm widened lap between the width of the geotextile.
3、焊缝检测工艺：3. Welding seam inspection process:
本发明的焊缝检测工艺包括通长焊缝一次加压泄压检测方法和手持式单切面快速剥离检测方法。The welding seam detection process of the present invention includes a one-time pressure relief detection method for a full-length welding seam and a hand-held single-cut surface rapid peeling detection method.
具体的：specific:
本发明的通长焊缝一次加压泄压检测方法为热熔法焊接后的双焊缝大面积快速检测，即采用快速加压泄压装置与配套压力设施对通长焊缝一次加压快速泄压进行完整性检测，其充气压强≥300KPa，持续时间≥1min。其中，如图2所示，具体的通长焊缝一次加压泄压检测方法包括：将通长的焊缝空腔两端(24与27)封住，连接好供气装置21的气压检测设备22将针头23插入空腔24内侧25约10cm处，用气压检测设备22对焊缝气腔26加压至300kPa，维持1分钟以上，并保证气压不低于300kPa，然后在焊缝的另一端27开孔放气，气压表28指针能够迅速归零方视为合格，最后对切口25和27进行补焊封闭。The one-time pressurization and pressure relief detection method for the full-length weld of the present invention is a large-area rapid detection of double welds after hot-melt welding, that is, the rapid pressurization and pressure relief device and supporting pressure facilities are used to quickly pressurize the full-length weld at one time Integrity test for pressure relief, the inflation pressure is ≥300KPa, and the duration is ≥1min. Among them, as shown in Figure 2, the specific method for detecting the pressure and pressure relief of a full-length weld at a time includes: sealing both ends (24 and 27) of the full-length weld cavity and connecting the air pressure detection of the gas supply device 21 The device 22 inserts the needle 23 into the cavity 24 at about 10 cm from the inner side 25 of the cavity 24, and pressurizes the weld air cavity 26 to 300 kPa with the air pressure detection device 22, maintains it for more than 1 minute, and ensures that the air pressure is not less than 300 kPa. One end 27 is vented, and the pointer of the barometer 28 can be quickly returned to zero to be deemed qualified. Finally, the cuts 25 and 27 are repaired and closed.
如图3所示，本发明手持式单切面快速剥离检测方法为采用手持式单切面快速剥离检测仪31沿着焊缝32边缘进行快速剥离检测，焊缝32不允许出现“鱼嘴”33。As shown in FIG. 3, the hand-held single-cut surface rapid peeling detection method of the present invention uses a handheld single-cut surface rapid peeling detector 31 to perform rapid peeling detection along the edge of the weld 32, and the weld 32 does not allow "fish mouth" 33 to appear.
4、通用性补丁构件：4. General patch components:
通用性补丁构件为双层HDPE膜挤压焊接，适用于丁字缝、人为缺陷造成的破损等薄弱部位的HDPE膜补强焊接；其中，第二层HDPE膜需超出第一层HDPE膜的边缘至少20cm，以确保补强系统的质量。The universal patch component is double-layer HDPE film extrusion welding, which is suitable for reinforcement welding of HDPE film in weak parts such as T-seam and damage caused by man-made defects. Among them, the second layer of HDPE film must extend beyond the edge of the first layer of HDPE film at least 20cm to ensure the quality of the reinforcement system.
具体的：specific:
如图4所示，本发明的双补丁HDPE膜焊接，通过预制模块实现高效挤压焊接，即HDPE补强膜焊接前已完成加强HDPE膜的裁膜、擦拭、打毛等工作。对丁字缝、人为缺陷造成的破损等薄弱部位范围内不具备双缝焊接41的部位42打毛焊接，将预制好的第一层HDPE膜模块(50cm×50cm)43覆盖丁字缝，进行第一层补强焊接44，再将预制好的第二层HDPE膜模块(70cm×70cm)45覆盖第一层HDPE膜，进行第二层补强焊接46，快速实现双补丁焊接。As shown in Figure 4, the dual-patch HDPE film welding of the present invention realizes high-efficiency extrusion welding through prefabricated modules, that is, the cutting, wiping, and roughening of the HDPE film have been completed before the HDPE reinforcement film is welded. Roughly weld the parts 42 that do not have double seam welding 41 within the range of weak parts such as T-seam, damage caused by man-made defects, and cover the T-seam with the prefabricated first layer of HDPE film module (50cm×50cm) 43. Layer reinforcement welding 44, and then the prefabricated second layer HDPE film module (70cm×70cm) 45 is covered with the first layer HDPE film, and the second layer reinforcement welding 46 is performed to quickly realize double patch welding.
基于上述的复合HDPE膜防控系统的相关设计以及工艺参数的选择，本发明提供一种复合HDPE膜防控系统的施工方法，包括：Based on the above-mentioned related design of the composite HDPE membrane prevention and control system and the selection of process parameters, the present invention provides a construction method of the composite HDPE membrane prevention and control system, which includes:
铺设底层的加宽型土工布，相邻两加宽型土工布进行搭接；Lay the widened geotextile on the bottom layer, and overlap two adjacent widened geotextiles;
铺设中间层的增强型HDPE土工膜，相邻两增强型HDPE土工膜进行焊接；Lay the reinforced HDPE geomembrane of the middle layer, and weld two adjacent reinforced HDPE geomembranes;
采用通长焊缝一次加压泄压检测方法和/或手持式单切面快速剥离检测方法对HDPE土工膜的焊缝进行检测；Use the one-time pressure relief detection method of the long weld and/or the hand-held single-section rapid peeling test method to detect the weld of the HDPE geomembrane;
采用双层HDPE膜对增强型HDPE土工膜破损部位或者无法进行双缝焊接的部位进行补强焊接；Double-layer HDPE membrane is used to strengthen and weld the damaged parts of the reinforced HDPE geomembrane or the parts that cannot be double-sealed welding;
铺设上层的加宽型土工布，相邻两加宽型土工布进行搭接。Lay the upper widened geotextile, and overlap two adjacent widened geotextiles.
本发明的优点：Advantages of the present invention:
1、实现应急设施基地的高效污染防控。完全阻隔应急设施基地产生的医疗垃圾、医疗废水、传染性废弃物等对土壤和地下水的污染，防止地下水对应急设施的影响，起到防潮作用，针对污染物腐蚀性、毒性、放射性及传染性强，保证最高的抗渗防护标准，起到紧急安全防护作用。1. Realize high-efficiency pollution prevention and control of emergency facilities base. Completely block the pollution of soil and groundwater by medical waste, medical waste water, and infectious waste generated by emergency facilities base, prevent the impact of groundwater on emergency facilities, play a role in moisture prevention, and target the corrosiveness, toxicity, radioactivity and infectivity of pollutants Strong, guarantee the highest impermeability protection standard, play an emergency safety protection role.
2、优化了焊接参数，提高了焊接速率，提升了焊接质量的稳定性，可实现高效增强焊接效果，升级优化了长丝无纺土工布的幅宽设计，易于土工布的快速搭接与质量保证，缩短了施工周期。2. Optimized the welding parameters, improved the welding speed, improved the stability of the welding quality, can achieve high-efficiency enhancement of the welding effect, upgraded and optimized the width design of the filament non-woven geotextile, which is easy for the quick overlap and quality of the geotextile Guarantee, shorten the construction period.
3、通长焊缝一次加压快速泄压检测法与手持式单切面快速剥离检测法的设计与参数优化可实现对应急项目防控系统的快速检测，操作便捷，检测效果好。3. The design and parameter optimization of the one-time pressurization rapid pressure relief detection method for the long weld and the handheld single-section rapid peeling detection method can realize the rapid detection of the emergency project prevention and control system, which is convenient to operate and has a good detection effect.
4、通过设计通用性补丁构件，预制双补丁模块，可塑性强，易于实现快 速修补。4. Through the design of universal patch components and prefabricated dual patch modules, it has strong plasticity and is easy to achieve rapid repair.
以上仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

  1. 一种用于应急设施基地的复合HDPE膜防控系统，其特征在于，包括：A composite HDPE membrane prevention and control system for emergency facility bases, which is characterized in that it includes:
    选择模块化复合HDPE膜防控材料：Choose modular composite HDPE film prevention and control materials:
    所述复合HDPE膜防控材料为现场复合的两布一膜，所述两布一膜由增强型HDPE土工膜和加宽型土工布构成；The composite HDPE membrane prevention and control material is two fabrics and one membrane compounded on site, and the two fabrics and one membrane are composed of an enhanced HDPE geomembrane and a widened geotextile;
    快速拼接工艺：Quick splicing process:
    所述快速拼接工艺包括所述增强型HDPE土工膜的焊接工艺和所述加宽型土工布的搭接工艺，所述焊接工艺的焊接温度为400℃～420℃，焊接速度为3m/min～6m/min；The rapid splicing process includes the welding process of the reinforced HDPE geomembrane and the lap process of the widened geotextile. The welding temperature of the welding process is 400°C to 420°C, and the welding speed is 3m/min to 6m/min;
    焊缝检测工艺：Welding seam inspection process:
    所述焊缝检测工艺包括通长焊缝一次加压泄压检测方法，所述通长焊缝一次加压泄压检测方法的充气压强≥300KPa，持续时间≥1min；The welding seam detection process includes a one-time pressurization and pressure relief detection method for a long weld, the inflation pressure of the one-time pressurization and pressure relief detection method for a long weld is ≥300KPa, and the duration is ≥1min;
    通用性补丁构件：General patch components:
    所述通用性补丁构件为双层HDPE膜挤压焊接。The universal patch member is extrusion welding of a double-layer HDPE film.
  2. 如权利要求1所述的复合HDPE膜防控系统，其特征在于，所述增强型HDPE土工膜的幅宽为≥700cm，断裂伸长率≥800％，抗直角撕裂强度≥250N；The composite HDPE film prevention and control system according to claim 1, wherein the reinforced HDPE geomembrane has a width of ≥700cm, an elongation at break ≥800%, and a right-angle tear strength ≥250N;
    所述加宽型土工布为聚丙烯长丝土工布，所述加宽型土工布的幅宽为420cm～450cm，所述搭接工艺的搭接宽度为20cm～50cm，克重为500～800g/m 2，断裂伸长率≥100％，顶破强力≥7000N，梯形撕裂强力≥1000N； The widened geotextile is polypropylene filament geotextile, the width of the widened geotextile is 420cm～450cm, the lap width of the lap process is 20cm～50cm, and the weight is 500～800g /m 2 , breaking elongation ≥100%, bursting strength ≥7000N, trapezoidal tearing strength ≥1000N;
    所述复合HDPE膜防控材料的抗渗系数达1.0×10 -12cm/s。 The anti-permeability coefficient of the composite HDPE film prevention and control material reaches 1.0×10 -12 cm/s.
  3. 如权利要求2所述的复合HDPE膜防控系统，其特征在于，所述增强型HDPE土工膜的幅宽为800cm，所述加宽型土工布的幅宽为430cm，所述搭接工艺的搭接宽度为30cm。The composite HDPE membrane prevention and control system of claim 2, wherein the width of the reinforced HDPE geomembrane is 800 cm, the width of the widened geotextile is 430 cm, and the lap process The overlap width is 30cm.
  4. 如权利要求1所述的复合HDPE膜防控系统，其特征在于，所述焊接工艺的焊接温度为420℃，焊接速度为5m/min，对所述增强型HDPE土工膜进行快速热熔焊接。The composite HDPE membrane prevention and control system according to claim 1, wherein the welding temperature of the welding process is 420° C., and the welding speed is 5 m/min, and the reinforced HDPE geomembrane is fast hot melt welding.
  5. 如权利要求1所述的复合HDPE膜防控系统，其特征在于，所述通长焊缝一次加压泄压检测方法为采用快速加压泄压装置与配套压力设施对通长焊缝一次加压快速泄压进行完整性检测。The composite HDPE membrane prevention and control system according to claim 1, wherein the method for detecting the primary pressure relief of the long weld is to use a rapid pressure relief device and supporting pressure facilities to add a pressure to the long weld. Pressure is quickly relieved for integrity testing.
  6. 如权利要求5所述的复合HDPE膜防控系统，其特征在于，所述通长焊缝一次加压泄压检测方法包括：The composite HDPE film prevention and control system according to claim 5, wherein the method for detecting the pressure and pressure relief of the full-length weld at one time comprises:
    将通长的焊缝空腔两端封住，连接好供气装置的气压检测设备；将针头插入一侧空腔内侧预设位置处，用气压检测设备对焊缝气腔加压至300kPa，维持1min以上，并保证气压不低于300kPa，然后在焊缝的另一侧开孔放气，气压表指针迅速归零则视为合格，最后对切口进行补焊封闭。Seal both ends of the long weld cavity and connect the air pressure detection equipment of the air supply device; insert the needle into the preset position inside the cavity on one side, and use the air pressure detection equipment to pressurize the weld air cavity to 300kPa, Maintain for more than 1 min, and ensure that the air pressure is not less than 300kPa, and then open a hole on the other side of the weld to vent, and the barometer pointer quickly returns to zero, it is deemed qualified, and finally the cut is repaired and closed.
  7. 如权利要求1所述的复合HDPE膜防控系统，其特征在于，所述焊缝检测工艺还包括手持式单切面快速剥离检测方法；The composite HDPE film prevention and control system according to claim 1, wherein the welding seam detection process further comprises a hand-held single-section rapid peeling detection method;
    所述手持式单切面快速剥离检测方法为沿着焊缝边缘进行剥离检测，所述剥离检测为焊缝不允许出现“鱼嘴”。The hand-held single-cut surface rapid peeling detection method is to perform peeling detection along the edge of the weld, and the peeling detection is that the weld is not allowed to have "fish mouths".
  8. 如权利要求1所述的复合HDPE膜防控系统，其特征在于，所述双层HDPE膜挤压焊接的方法包括：The composite HDPE film prevention and control system according to claim 1, wherein the method for extrusion welding of the double-layer HDPE film comprises:
    预制已完成裁膜、擦拭、打毛的双层HDPE膜；Pre-fabricated double-layer HDPE film that has been cut, wiped, and roughed;
    对所述增强型HDPE土工膜破损部位或者无法进行双缝焊接的部位打毛焊接；Rough welding of damaged parts of the reinforced HDPE geomembrane or parts that cannot be double-sealed welding;
    将预制好的第一层HDPE膜覆盖上述部位，进行第一层补强焊接；Cover the above-mentioned parts with the prefabricated first layer of HDPE film, and perform the first layer of reinforcement welding;
    将预制好的第二层HDPE膜覆盖第一层HDPE膜，进行第二层补强焊接，实现双层HDPE膜挤压焊接。The prefabricated second layer of HDPE film is covered with the first layer of HDPE film, and the second layer is reinforced and welded to realize the extrusion welding of the double layer of HDPE film.
  9. 如权利要求8所述的复合HDPE膜防控系统，其特征在于，第二层HDPE膜需超出第一层HDPE膜的边缘至少20cm。The composite HDPE film prevention and control system according to claim 8, wherein the second layer of HDPE film needs to extend beyond the edge of the first layer of HDPE film by at least 20 cm.
  10. 一种如权利要求1-9中任一项所述的复合HDPE膜防控系统的施工方法，其特征在于，包括：A construction method of the composite HDPE film prevention and control system according to any one of claims 1-9, characterized in that it comprises:
    铺设底层的加宽型土工布，相邻两所述加宽型土工布进行搭接；Lay the widened geotextile on the bottom layer, and overlap the two adjacent widened geotextiles;
    铺设中间层的增强型HDPE土工膜，相邻两所述增强型HDPE土工膜进行焊接；Lay the enhanced HDPE geomembrane of the middle layer, and weld two adjacent ones of the enhanced HDPE geomembrane;
    采用通长焊缝一次加压泄压检测方法和/或手持式单切面快速剥离检测方法对HDPE土工膜的焊缝进行检测；Use the one-time pressure relief detection method of the long weld and/or the hand-held single-section rapid peeling test method to detect the weld of the HDPE geomembrane;
    采用双层HDPE膜对所述增强型HDPE土工膜破损部位或者无法进行双缝焊接的部位进行补强焊接；Using a double-layer HDPE membrane to reinforce the damaged parts of the enhanced HDPE geomembrane or the parts that cannot be double-sealed welding;
    铺设上层的加宽型土工布，相邻两所述加宽型土工布进行搭接。The upper widened geotextile is laid, and two adjacent widened geotextiles are overlapped.
PCT/CN2020/118026 2020-03-03 2020-09-27 Composite hdpe membrane-based prevention and control system for emergency facility base, and construction method WO2021174818A1 (en)

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