KR102810806B1 - Water intercepting sheet for intercepting leaky water in waste reclaimed land - Google Patents
Water intercepting sheet for intercepting leaky water in waste reclaimed land Download PDFInfo
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- KR102810806B1 KR102810806B1 KR1020220174081A KR20220174081A KR102810806B1 KR 102810806 B1 KR102810806 B1 KR 102810806B1 KR 1020220174081 A KR1020220174081 A KR 1020220174081A KR 20220174081 A KR20220174081 A KR 20220174081A KR 102810806 B1 KR102810806 B1 KR 102810806B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/008—Subterranean disposal, e.g. in boreholes or subsurface fractures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/043—HDPE, i.e. high density polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density polyethylene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
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Abstract
본 발명은 폐기물 매립장의 침출수 차단용 차수시트에 관한 것으로 지지보강재가 일정한 간격으로 형성된 통공에 채워져 설치된 단섬유 적층체의 일면에 고밀도 폴리에틸렌(HDPE)으로 이루어진 방수시트를 부착하여 매립쓰레기 하중 및 외부의 충격으로부터 보호하는 기능과 쓰레기에서 발생하는 침출수를 원활하게 배수시키는 투과계수를 갖는 배수기능, 매립 하중에 의한 매립지 사면의 활동파괴를 방지하는 사면안전성 확보기능을 동시에 만족하면서 방수시트를 부착시 접합강도가 극대화 되도록 한 높은 하중압력 하에서 우수한 투과계수를 갖는 폐기물 매립장의 침출수 차단용 차수시트에 관한 것인바, 본 발명은 폐기물 매립장의 침출수 차단용 차수시트에 있어서, 단섬유가 적층되어 형성된 단섬유 적층체와; 상기 단섬유 적층체에 일정한 간격으로 천공된 통공에 채워져 설치된 지지보강재와; 상기 단섬유 적층체의 일면 또는 양면에 부착되는 방수시트를 포함하여 이루어진 것에 그 특징이 있다.The present invention relates to a waterproof sheet for blocking leachate in a landfill, and is characterized in that it comprises a waterproof sheet made of high-density polyethylene (HDPE) attached to one side of a single-fiber laminate, which is installed by filling holes formed at regular intervals with supporting reinforcing materials, so as to protect against landfill waste load and external impact, a drainage function having a permeability coefficient for smoothly draining leachate generated from the waste, and a slope safety securing function for preventing the slope of a landfill from being destroyed by the load of the landfill, while simultaneously satisfying the function of securing the safety of the slope by preventing the slope from being damaged by the load of the landfill, and has an excellent permeability coefficient under a high load pressure so that the bonding strength is maximized when the waterproof sheet is attached. The present invention is characterized in that the waterproof sheet for blocking leachate in a landfill comprises a single-fiber laminate formed by stacking single fibers; supporting reinforcing materials installed by filling holes formed at regular intervals in the single-fiber laminate; and a waterproof sheet attached to one or both sides of the single-fiber laminate.
Description
본 발명은 폐기물 매립장의 침출수 차단용 차수시트에 관한 것으로 지지보강재가 일정한 간격으로 형성된 통공에 채워져 설치된 단섬유 적층체의 일면에 고밀도 폴리에틸렌(HDPE)으로 이루어진 방수시트를 부착하여 매립쓰레기 하중 및 외부의 충격으로부터 보호하는 기능과 쓰레기에서 발생하는 침출수를 원활하게 배수시키는 투과계수를 갖는 배수기능, 매립 하중에 의한 매립지 사면의 활동파괴를 방지하는 사면안전성 확보기능을 동시에 만족하면서 방수시트를 부착시 접합강도가 극대화 되도록 한 높은 하중압력 하에서 우수한 투과계수를 갖는 폐기물 매립장의 침출수 차단용 차수시트에 관한 것이다.The present invention relates to a waterproof sheet for blocking leachate in a landfill, and relates to a waterproof sheet made of high-density polyethylene (HDPE) attached to one side of a single-fiber laminated body installed by filling holes formed at regular intervals with supporting reinforcing materials, thereby protecting against landfill waste load and external impact, a drainage function having a permeability coefficient that smoothly drains leachate generated from the waste, and a slope safety securing function that prevents the slope of a landfill from being destroyed by landfill load, while simultaneously satisfying the function of securing slope safety by maximizing the bonding strength when attaching the waterproof sheet.
일반적으로, 폐기물의 처리에는 여러 가지 방법이 있으나, 소각하기 어려운 폐기물은 주로 매립에 의존하게 된다. 이러한 폐기물 매립에 있어서 매립장 건설시에 가장 주의해야 할 사항중 하나는 매립된 폐기물로부터 발생되는 침출수로 인하여 주변 토양이 오염되는 것을 방지하는 것이며, 이를 위하여 매립장 건설시에는 침출수가 매립시설 외부로 누출되지 않도록 차단하는 차수층을 적어도 이중으로 시공하도록 규정되어 있다.In general, there are various methods for waste disposal, but waste that is difficult to incinerate is mainly landfilled. One of the most important things to pay attention to when constructing a landfill for such waste is to prevent the surrounding soil from being contaminated by leachate generated from the landfilled waste. To this end, when constructing a landfill, it is stipulated that at least two layers of a barrier layer be constructed to prevent leachate from leaking out of the landfill facility.
이러한 차수층은 조성된 원지반에 구축되는 차수벽과 그 위에 주로 고밀도 폴리에틸렌으로 이루어진 방수시트가 설치되어 구성된다. 상기 차수벽은 폐기물의 하중을 견딜 수 있게 소정의 압축강도를 갖고 투수계수가 1초당 1천만분의 1센티미터 이하가 되도록 점토, 고화토, 혼합토들과 같은 차수재를 50㎝ 이상 포설하여 구성된다. 그 위에 배설되는 방수시트는 인장강도 및 신장율이 강해야 하고 내화성 및 산, 알칼리에 대한 저항성이 커야 할 뿐만 아니라 자외선에 대한 저항성도 있어야 하며, 주로 고밀도 폴리에틸렌으로 성형된 것이 사용된다.This kind of water barrier layer is constructed by installing a water barrier wall on the formed ground and a waterproofing sheet mainly made of high-density polyethylene on top of it. The water barrier wall is constructed by laying water barrier materials such as clay, cemented soil, and mixed soil more than 50 cm thick so that it has a predetermined compressive strength to withstand the load of the waste and a hydraulic conductivity of 1/10 millionth of a centimeter per second or less. The waterproofing sheet laid on top must have high tensile strength and elongation, and must have high fire resistance and resistance to acids and alkalis as well as resistance to ultraviolet rays, and is mainly formed of high-density polyethylene.
또한, 상기 방수시트는 그 자체가 압축강도 등은 크지만 굽힘성 또는 내충격성이 다소 약하기 때문에 덤프 트럭등으로 부터 낙하되는 돌 등을 포함한 쓰레기에 의한 충격에 의해 찧기거나 크랙이 발생되는 등의 방수시트 파손을 방지하기 위하여 보호재로서 폴리프로필렌 또는 폴리에스터로서 강섬유로 되어 완충성 및 내압착성이 큰 부직포를 현장에서 방수시트의 상면에 별도로 포설한다. In addition, since the above waterproof sheet itself has high compressive strength, etc. but rather low bending and impact resistance, to prevent damage to the waterproof sheet, such as being crushed or cracked by impact from trash including stones dropped from dump trucks, a non-woven fabric made of polypropylene or polyester, steel fibers with high cushioning and compression resistance, is separately laid on the upper surface of the waterproof sheet at the site as a protective material.
그러나, 이와같이 부직포를 방수시트에 포설할 때 방수시트의 포설방향과 같은 방향으로 느슨하게 포설하고 봉합해야 하는 등의 까다로운 부가적인 작업이 소요되고, 방수시트와 부직포의 포설을 별도의 작업으로 수행해야 하기 때문에 작업성이 매우 낮은 문제가 있었다. However, when laying the nonwoven fabric on the waterproof sheet in this way, there was a problem of very low workability because it required difficult additional work such as laying it loosely in the same direction as the laying direction of the waterproof sheet and then sealing it, and laying the waterproof sheet and the nonwoven fabric had to be performed as separate work.
특히, 경사면에서는 방수시트에 대하여 미끄러짐에 의해 작업하기가 매우 불편하여 작업효율이 저하되는 문제와 함께 쓰레기 투입시에 부직포가 찧기거나, 방수시트가 파손되는 문제가 있었다.In particular, on slopes, there was a problem that it was very inconvenient to work on the waterproof sheet due to slipping, which lowered work efficiency, and there was also a problem that the non-woven fabric was crushed or the waterproof sheet was damaged when throwing in trash.
상기한 종래 문제점을 해소하고자 대한민국 특허 출원 제1998-0032553호 "폐기물 매립장의 침출수 차단용 차수시트"가 공개된바 있습니다. 상기한 종래 폐기물 매립장의 침출수 차단용 차수시트(100)는 첨부도면 도 1에 도시된 바와 같이 고밀도 합성수지재로 이루어진 방수시트(30)의 적어도 일면에 일정한 두께를 갖으며 단섬유가 적층되어 이루어진 부직포(20)를 열융착에 의해 접합하였다.In order to solve the above-mentioned conventional problems, Korean Patent Application No. 1998-0032553, "Waterproofing sheet for blocking leachate from a landfill", has been published. As shown in the attached drawing, Fig. 1, the above-mentioned waterproofing sheet (100) for blocking leachate from a landfill is made by bonding a nonwoven fabric (20) made of laminated short fibers and having a constant thickness on at least one side of a waterproofing sheet (30) made of a high-density synthetic resin material by heat fusing.
그러나 상기한 선 출원된 대한민국 특허 출원 제1998-0032553호 "폐기물 매립장의 침출수 차단용 차수시트" 또한 외부 충격에 의해 부직포(20)이 쉽게 압착되는 문제로 인하여 투수계수에 영향을 주어 배수가 용이하게 이루어지지 않는 문제가 있으며 또한 방수시트(30)가 쉽게 파손되는 문제가 있다.However, the above-mentioned previously applied Korean patent application No. 1998-0032553, "Waterproof sheet for blocking leachate from a landfill", also has a problem in that the nonwoven fabric (20) is easily compressed by external impact, which affects the coefficient of permeability and makes drainage difficult, and also has a problem in that the waterproof sheet (30) is easily damaged.
상기한 종래 문제점을 감안하여 안출한 것으로서 이의 목적은 단섬유를 일정한 두께로 형성된 단섬유 적층체의 통공에 채워진 지지보강재에 의해 매립되는 쓰레기의 압력을 받아도 단섬유 적층체가 압축되지 않고 초기의 두께를 유지할 수 있도록 함으로서 수직 방향의 투과계수를 유지 및 변형을 방지할 수 있으며, 또한 상기 단섬유 적층체의 통공에 채워진 지지보강재에 의해 쓰레기 매립장 건설 시 침출수의 외부유출을 차단하기 위하여 설치하는 차방수시트의 접합강도를 극대화시킬 수 있어 매립쓰레기 하중 및 외부의 충격으로부터 보호하는 기능과 쓰레기에서 발생하는 침출수를 원활하게 배수시키는 투과계수를 갖는 배수기능, 매립 하중에 의한 매립지 사면의 활동파괴를 방지하는 사면안전성 확보기능을 동시에 만족하는 폐기물 매립장의 침출수 차단용 차수시트를 제공하는데 있다.The present invention has been devised in consideration of the above-mentioned problems of the related art, and its purpose is to maintain the initial thickness of the single-fiber laminate without being compressed even when subjected to the pressure of landfill waste by the supporting reinforcing material filled in the pores of the single-fiber laminate formed with single fibers to a certain thickness, thereby maintaining the vertical permeability coefficient and preventing deformation, and further, to maximize the bonding strength of the waterproofing sheet installed to block the external outflow of leachate during the construction of a landfill by the supporting reinforcing material filled in the pores of the single-fiber laminate, thereby providing a waterproofing sheet for blocking leachate in a landfill that simultaneously satisfies the function of protecting from the load of landfill waste and external impact, the function of draining leachate generated from the waste with a permeability coefficient that smoothly drains it, and the function of ensuring slope safety that prevents the slope of the landfill from being destroyed by the load of the landfill.
이러한 본 발명의 목적은 폐기물 매립장의 침출수 차단용 차수시트에 있어서, 단섬유가 적층되어 형성된 단섬유 적층체와; 상기 단섬유 적층체에 일정한 간격으로 천공된 통공에 채워져 설치된 지지보강재와; 상기 단섬유 적층체의 일면 또는 양면에 부착되는 방수시트를 포함하여 이루어진 것을 것을 특징으로 하는 폐기물 매립장의 침출수 차단용 차수시트에 의하여 달성된다.The purpose of the present invention is achieved by a water-proof sheet for blocking leachate from a landfill, characterized in that it comprises: a single-fiber laminate formed by stacking single fibers; a supporting reinforcing material filled and installed in holes formed at regular intervals in the single-fiber laminate; and a waterproof sheet attached to one or both sides of the single-fiber laminate.
상기 지지보강재가 통공으로부터 1-3mm 범위로 돌출되도록 넘쳐나게 채워져 형성된 것을 특징으로 하는 폐기물 매립장의 침출수 차단용 차수시트에 의하여 달성된다.This is achieved by a water-blocking sheet for blocking leachate in a landfill, characterized in that the above-mentioned supporting reinforcing material is filled to overflowing so that it protrudes 1-3 mm from the perforation.
상기 지지보강재는 PP, PE, PET, HDPE, LDPE, VEA 중 어느 하나인 것을 특징으로 하는 높은 폐기물 매립장의 침출수 차단용 차수시트에 의하여 달성된다.The above-mentioned supporting reinforcement is achieved by a leachate blocking waterproofing sheet for a high waste landfill, characterized by being any one of PP, PE, PET, HDPE, LDPE, and VEA.
이와 같은 본 발명은 단섬유를 일정한 두께로 형성된 단섬유 적층체의 통공에 채워진 지지보강재에 의해 매립되는 쓰레기의 압력을 받아도 단섬유 적층체가 압축되지 않고 초기의 두께를 유지할 수 있도록 함으로서 수직 방향의 투과계수를 유지 및 변형을 방지할 수 있으며, 또한 상기 단섬유 적층체의 통공에 채워진 지지보강재에 의해 쓰레기 매립장 건설 시 침출수의 외부유출을 차단하기 위하여 설치하는 차방수시트의 접합강도를 극대화시킬 수 있어 매립쓰레기 하중 및 외부의 충격으로부터 보호하는 기능과 쓰레기에서 발생하는 침출수를 원활하게 배수시키는 투과계수를 갖는 배수기능, 매립 하중에 의한 매립지 사면의 활동파괴를 방지하는 사면안전성 확보기능을 동시에 만족하는 등의 효과가 있는 매우 유용한 발명이다.The present invention is a very useful invention that has the effects of simultaneously satisfying the function of protecting against landfill waste load and external impact, the function of draining having a permeability coefficient that smoothly drains leachate generated from the waste, and the function of ensuring slope safety that prevents slope damage caused by landfill load, by allowing the single-fiber laminate to maintain its initial thickness without being compressed even when subjected to the pressure of landfill waste by the supporting reinforcing material filled in the pores of the single-fiber laminate, and thereby maximizing the bonding strength of a waterproofing sheet installed to block external outflow of leachate during landfill construction.
도 1은 종래 폐기물 매립장의 침출수 차단용 차수시트의 구조를 보여주는 단면도.
도 2는 본 발명의 기술이 적용된 폐기물 매립장의 침출수 차단용 차수시트의 구조를 보여주는 단면도.
도 3은 본 발명의 기술적 요점인 지지보강재가 설치된 단섬유 적층체의 구조를 보여주는 사시도.Figure 1 is a cross-sectional view showing the structure of a water-blocking sheet for blocking leachate from a conventional landfill.
Figure 2 is a cross-sectional view showing the structure of a water-blocking sheet for blocking leachate from a landfill to which the technology of the present invention is applied.
Figure 3 is a perspective view showing the structure of a single-fiber laminate having a supporting reinforcing material installed, which is a technical point of the present invention.
이하 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.
본 발명의 기술이 적용된 폐기물 매립장의 침출수 차단용 차수시트의 제조방법은 고밀도 폴리에틸렌 펠릿을 호퍼에 넣고 170℃~180℃에서 용융시켜 소위 T-형 다이에서 스크류로 압출되면서 평판상의 방수시트로 성형되며, 이러한 성형장치와 성형 공정은 공지된 것으로 본 발명에서도 동일하게 이용한다. 한편 상기 방수시트의 다른 제조방법으로는 관형시이트압출장치로부터 압출되어 형성되는 튜브 형상의 버블을 절개하여 평판상의 방수시트로 형성한다.The method for manufacturing a waterproof sheet for blocking leachate from a landfill, to which the technology of the present invention is applied, comprises placing high-density polyethylene pellets in a hopper, melting them at 170°C to 180°C, and extruding them by a screw from a so-called T-shaped die into a flat waterproof sheet. This forming device and forming process are known, and are used in the same manner in the present invention. Meanwhile, as another method for manufacturing the waterproof sheet, a tube-shaped bubble formed by extrusion from a tubular sheet extrusion device is cut to form a flat waterproof sheet.
상기 T-형 다이 또는 관형시이트압출장치로 부터 약 1~2mm의 두께를 갖도록 평판의 방수시트(3)를 준비한다.A flat waterproof sheet (3) having a thickness of about 1 to 2 mm is prepared from the above T-shaped die or tubular sheet extruding device.
한편 섬도가 10~100데니어인 폴리프로필렌섬유로 된 웹을 수평으로 적층하고 프리펀칭하여 중량 1000~3000g/㎡의 섬유층을 갖는 단섬유 적층체(2)를 준비한다. Meanwhile, a web made of polypropylene fibers with a fineness of 10 to 100 denier is horizontally laminated and pre-punched to prepare a single-fiber laminate (2) having a fiber layer weighing 1,000 to 3,000 g/㎡.
상기 단섬유 적층체(2)의 소재로는 폴리프로필렌, 폴리에스테르 등이 바람직하고, 단위 면적 당 중량은 300~1,000g/㎡이 바람직하다. 이러한 조건들을 만족하는 섬유체는 일반적으로 쓰레기 매립장 사면부에 설치되는 차수시트에서 요구되는 3.0ton/m 이상의 항복인장강도를 부여할 수 있게 된다.The material of the above-mentioned single-fiber laminate (2) is preferably polypropylene, polyester, etc., and the weight per unit area is preferably 300 to 1,000 g/㎡. A fiber satisfying these conditions can provide a yield tensile strength of 3.0 ton/m or more, which is generally required for a water-repellent sheet installed on a slope of a landfill.
상기 단섬유 적층체(2)가 준비되면 레이저 절단장치를 이용하여 크기가 5~10mm범위를 갖는 통공을 형성시킨다. 상기 통공(4)의 크기가 5mm이하이면 외부 압력에 의해 형상을 유지시키는 지지력이 저하되고 및 천공에 따른 인장강도가 저하되는 문제가 잇으며, 상기 통공의 크기가 10mm이상이면 지지력과 인장강도는 향상되지만 니들펀칭에 따른 결속력 저하가 발생되는 문제가 있다.When the above-mentioned single-fiber laminate (2) is prepared, a laser cutting device is used to form a hole having a size ranging from 5 to 10 mm. If the size of the above-mentioned hole (4) is less than 5 mm, there is a problem that the supporting force for maintaining the shape by external pressure is reduced and the tensile strength due to the perforation is reduced. If the size of the above-mentioned hole is 10 mm or more, the supporting force and tensile strength are improved, but there is a problem that the bonding force is reduced due to needle punching.
상기와 같이 단섬유 적층체(2)에 통공(4)이 형성되면 상기 통공(4)에 PP, PE, PET, HDPE, LDPE, EVA 중 어느 하나로 이루어진 액체 형태의 수지를 채워 넣고 냉각시켜 지지보강재(5)를 형성시킨다.As described above, when a hole (4) is formed in the single-fiber laminate (2), a liquid resin made of one of PP, PE, PET, HDPE, LDPE, and EVA is filled into the hole (4) and cooled to form a supporting reinforcing material (5).
상기 지지보강재(5)는 통공(4)으로부터 1-3mm 범위로 돌출되도록 넘쳐나게 채워져 형성되며, 단섬유 적층체(2)의 표면을 고온의 고열하면 지지보강재(2)가 용융되며 이때 방수시트(3)를 부착시키면 접합강도가 증대되는 효과가 있기 때문이다.The above-mentioned supporting reinforcement (5) is formed by overflowing and protruding from the hole (4) to a range of 1-3 mm, and when the surface of the single-fiber laminate (2) is heated to a high temperature, the supporting reinforcement (2) melts, and when the waterproof sheet (3) is attached at this time, the bonding strength increases.
상기 방수시트(3)와 지지보강재(5)가 설치된 단섬유 적층체(2)의 준비가 완료되면 방수시트(3)의 표면을 가열하여 첨부도면 도 2에 도시된 바와 같이 단섬유 적층체(2)와 열융착에 의한 방법으로 접합시킨다. 물론 상기 열융착에 의한 접합시 단섬유 적층체(2)의 표면을 가열하여 접합시킬 수도 있다.When the preparation of the single-fiber laminate (2) having the waterproof sheet (3) and the supporting reinforcing material (5) installed is completed, the surface of the waterproof sheet (3) is heated and joined to the single-fiber laminate (2) by heat fusion as shown in the attached drawing, Fig. 2. Of course, when joining by heat fusion, the surface of the single-fiber laminate (2) may be heated and joined.
첨부도면 도 3에 도시된 바와 같이 지지보강재(3)가 설치된 단섬유 적층체(2)의 양면에 방수시트(3)를 부착하여 사용할 수도 있으며, 본 발명에서는 폐기물 매립장용 차수시트로 설명하고 있으나 터널에도 적용하여 사용할 수도 있다. As shown in the attached drawing 3, a waterproof sheet (3) may be attached to both sides of a single-fiber laminate (2) on which a support reinforcing material (3) is installed and used. Although the present invention describes a waterproof sheet for a landfill, it may also be applied and used in tunnels.
상기와 같은 구조를 갖는 본 발명은 단섬유를 일정한 두께로 형성된 단섬유 적층체(2)의 통공(4)에 채워진 지지보강재(4)에 의해 매립되는 쓰레기의 압력을 받아도 단섬유 적층체(2)가 압축되지 않고 초기의 두께를 유지할 수 있도록 함으로서 수직 방향의 투과계수를 유지 및 변형을 방지할 수 있으며, 또한 상기 단섬유 적층체(2)의 통공(4)에 채워진 지지보강재(5)에 의해 쓰레기 매립장 건설 시 침출수의 외부유출을 차단하기 위하여 설치하는 방수시트(3)의 접합강도를 극대화시킬 수 있어 매립쓰레기 하중 및 외부의 충격으로부터 보호하는 기능과 쓰레기에서 발생하는 침출수를 원활하게 배수시키는 투과계수를 갖는 배수기능, 매립 하중에 의한 매립지 사면의 활동파괴를 방지하는 사면안전성 확보기능을 동시에 만족하는 등의 효과가 있는 매우 유용한 발명이다.The present invention having the structure as described above is a very useful invention that enables the single-fiber laminate (2) to maintain its initial thickness without being compressed even when subjected to the pressure of landfill waste by the supporting reinforcing material (4) filled in the perforations (4) of the single-fiber laminate (2) formed with single fibers to a constant thickness, thereby preventing deformation and maintaining the vertical permeability coefficient, and furthermore, by the supporting reinforcing material (5) filled in the perforations (4) of the single-fiber laminate (2), the bonding strength of the waterproofing sheet (3) installed to block the external outflow of leachate during the construction of a landfill site is maximized, thereby satisfying the functions of protecting against the load of landfill waste and external impact, the drainage function having a permeability coefficient that smoothly drains leachate generated from the waste, and the function of ensuring slope safety that prevents the slope of the landfill site from being destroyed by the load of the landfill site.
2 : 단섬유 적층체
3 : 방수시트
4 : 통공
5 : 지지보강재2: Single fiber laminate
3: Waterproof sheet
4 : Public
5: Supporting reinforcement
Claims (3)
단섬유가 적층되어 형성된 단섬유 적층체와;
상기 단섬유 적층체에 일정한 간격으로 천공된 통공에 채워져 설치된 지지보강재와;
상기 단섬유 적층체의 일면 또는 양면에 부착되는 방수시트를 포함하여 이루어진 것을 것이며,
상기 지지보강재가 통공으로부터 1-3mm 범위로 돌출되도록 넘쳐나게 채워져 형성된 것을 특징으로 하는 폐기물 매립장의 침출수 차단용 차수시트
In the case of a water barrier sheet for blocking leachate from a landfill,
A single-fiber laminate formed by laminating single fibers;
A supporting reinforcing material installed by filling holes perforated at regular intervals in the above single-fiber laminate;
It is composed of a waterproof sheet attached to one or both sides of the above single-fiber laminate,
A water-blocking sheet for blocking leachate in a landfill, characterized in that the above-mentioned supporting reinforcement is filled to overflow so that it protrudes 1-3 mm from the perforation.
상기 지지보강재는 PP, PE, PET, HDPE, LDPE, VEA 중 어느 하나인 것을 특징으로 하는 폐기물 매립장의 침출수 차단용 차수시트.In paragraph 1,
A water-blocking sheet for blocking leachate from a landfill, characterized in that the above-mentioned supporting reinforcing material is any one of PP, PE, PET, HDPE, LDPE, and VEA.
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