Method and device for waterproofing and draining off infiltrated water in hydraulic structures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E02B-007/04
E02B-007/02
출원번호
UP-0094606
(2006-11-22)
등록번호
US-7614826
(2009-11-23)
우선권정보
EP-05025533(2005-11-23)
국제출원번호
PCT/EP06/011163
(2006-11-22)
§371/§102 date
20080522
(20080522)
국제공개번호
WO07/059924
(2007-05-31)
발명자
/ 주소
Vriens, Wilhelmus Josephus Maria
출원인 / 주소
GSI B.V.
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
1인용 특허 :
6
초록▼
A sheathing of elastically deformable waterproofing sheet material (11) is applied and sealingly secured to a surface area of a hydraulic structure (10; 31; 36, 39) to be protected. The seeped water, which collects behind the waterproof sheathing (11), is discharged by gravity through one-way draina
A sheathing of elastically deformable waterproofing sheet material (11) is applied and sealingly secured to a surface area of a hydraulic structure (10; 31; 36, 39) to be protected. The seeped water, which collects behind the waterproof sheathing (11), is discharged by gravity through one-way drainage valves (13), provided in pre-established drainage positions of the waterproof sheathing (11); the drainage valves (13) are automatically opened and closed by the differential pressure of the water acting on opposite faces of a flexible sheet like flat valving member (M) of the drainage valve (13).
대표청구항▼
The invention claimed is 1. A method for waterproofing and draining off seeped water in hydraulic structures (10, 31, 41, 52), in which a waterproof sheathing, consisting of elastically deformable geomembrane sheets (11), is applied and secured to a surface area of a wall of the body of the hydraul
The invention claimed is 1. A method for waterproofing and draining off seeped water in hydraulic structures (10, 31, 41, 52), in which a waterproof sheathing, consisting of elastically deformable geomembrane sheets (11), is applied and secured to a surface area of a wall of the body of the hydraulic structure (10, 31, 41, 52), providing said sheathing with a one-way water drainage valve (13) for draining off the seeped water collected behind the waterproof sheathing, comprising the steps of: defining drainage points for draining off the water in pre-established positions of the waterproof sheathing; providing, in each of the pre-established drainage point, a one-way drainage valve (13) having a water discharge aperture in said waterproof sheathing; orienting said water discharging aperture of the drainage valve 13 in a natural downflow direction of the water and providing said drainage valve (13) with a flat flexible valving member (M), overlapping the discharging aperture; subjecting the flat valving member (M) to a differential pressure of the water acting on opposite faces of the waterproof sheathing; and causing automatic opening and closing of the drainage valve (13), by the pressure difference of the water arising on the opposite faces of the flat valving member (M) of the drainage valve (13), characterised by the steps of: providing said drainage valve (13) on a wall surface of the hydraulic structure (10, 31, 41, 52); and downwardly draining the seeped water by gravity. 2. The method for waterproofing and draining off seeped water according to claim 1, in which the waterproof sheathing comprises a plurality of waterproofing sheets (11) mechanically fastened to the hydraulic structure (10) sealed along the lateral edges, characterised by performing the drainage valve (13) during the installation of the waterproof sheathing, by superimposing transversal edges of two consecutive waterproofing sheets (11.1, 11.2), leaving the transversal edge of the upper sheet (11.1) to freely flex under the differential pressure of the water. 3. The method for waterproofing and draining off seeped water according to claim 2, characterised by superimposing the transversal edges of the two sheets (11.1, 11.2), over a length (d) ranging from 5 to 300 cm, preferably from 20 to 150 cm. 4. The method for waterproofing and draining off seeped water according to claim 1, characterised by providing the drainage valve (13) by performing a cut (20) in the waterproof sheet (11); positioning a flexible covering membrane (M) on said cut (20) and peripherally sealing said membrane (M) leaving a free fore edge (22) parallel to said cut (20) to define the flat valving member (M) of the drainage valve (13). 5. The method for waterproofing and draining off seeped water according to claim 4, characterised by providing a flat rigid support member beneath the sheathing, in correspondence of the covering membrane (M) of the drainage valve (13). 6. The method for waterproofing and draining off seeped water according to claim 1, characterised by performing a drainage valve (13) comprising a geomembrane sheet chosen from the following materials: thermoplastic materials, thermoplastic rubbers, thermoset materials, bituminous materials. 7. The method for waterproofing and draining off seeped water according to claim 6, characterised in that the drainage valve (13) comprising a geomembrane of a thermoplastic material chosen from: High density polyethylene, Linear low density polyethylene, Chlorinated polyethylene, Ethylene-vinyl acetate copolymer, Polyethylene, Polypropylene, Polyvinyl chloride, or combination thereof. 8. The method for waterproofing and draining off seeped water according to claim 6, characterised in that the drainage valve (13) comprises a geomembrane sheet (11) of a thermoplastic rubber-based material chosen from among the following: Chlorosulphonated polyethylene, Ethylene-propylene copolymer, or combination thereof. 9. The method for waterproofing and draining off seeped water according to claim 6, characterised in that the drainage valve (13) comprises a geomembrane sheet (11) of a thermoset synthetic material, chosen from: Polyisobutylene, Chloroprene rubber, Ethylene-propylene diene monomer, Butyl rubber, Nitrile rubber, or combination thereof. 10. The method for waterproofing and draining off seeped water as claimed in claim 6, characterised in that the drainage valve (13) consists of a geomembrane of bituminous material chosen from: Oxidised bitumen, Polymeric bitumen, or combination thereof. 11. The method for waterproofing and draining off seeped water according to claim 2, characterised by sealingly connecting the overlapped transversal edges of the waterproofing sheets (11) along a weakened breakage line (S). 12. The method for waterproofing and draining off seeped water according to claim 4, characterised by sealingly connecting the fore edge of the flat valving member (M), to the waterproof sheathing along a weakened breakage line (S). 13. The method for waterproofing and draining off seeped water according to claim 1, characterised by making a cut (20) in the waterproof sheathing; positioning and peripherally sealing a breakable closing geomembrane over said cut, said breakable closing geomembrane having a thickness lower than the waterproof sheathing sheets (11). 14. The method for waterproofing and for draining off seeped water according to claim 1, characterised by: forming a waterproof sheathing by applying a plurality of waterproofing sheets (11) of a synthetic material, against a surface area of the hydraulic structure; overlapping and sealingly fastening lateral edges of adjacent sheets (11), mechanically anchoring them to the body (10, 31, 41, 52) of the hydraulic structure; and providing a plurality of one-way drainage valves (13), in pre-established positions of the waterproof sheathing. 15. The method for waterproofing and draining off seeped water in a joint (51) between adjacent walls (52a, 52b) of a hydraulic structure, according to claim 1, characterised by comprising the steps of: applying a plurality of waterproofing sheets (11.1; 11.2) of synthetic waterproofing material along said joint (51); sealingly fastening the lateral edges of the water proofing sheets (11.1; 11.2) longitudinally to said joint (51); and providing at least one one-way drainage valve (13), by freely overlapping the adjacent transversal edges of two consecutive waterproofing sheets (11.1; 11.2). 16. The method for waterproofing and draining off seeped water, according to claim 1, characterised by positioning a layer of draining material between facing surfaces of the hydraulic structure (10, 31, 41, 52) and the waterproof sheathing (11). 17. The method for waterproofing and draining off seeped water, according to claim 16, characterised in that the layer of draining material is selected from a geonet, a geospacer, or combination thereof. 18. A device for waterproofing and draining off seeped water in hydraulic structures (10, 31, 41, 52), comprising: a waterproof sheathing (11) provided by a geomembrane of elastically deformable material; fastening means (14) to secure the geomembrane to a surface area of a wall of the hydraulic structure (10, 31, 41, 52), and drainage means for draining off the seeped water collected between the surface area of the hydraulic structure (10, 31, 41, 52) and the waterproof sheathing (11), said drainage means comprising: a plurality of one-way drainage valves (13) on the waterproof geomembrane; each drainage valve comprising: a water discharging aperture (20) in the waterproof geomembrane, said water discharging aperture (20) extending in a direction transversal to the natural downflowing direction of the seepage water; and a flexible flat valving member (M) sealingly fastened to the waterproofing membrane, said flat valving member (M) having a free edge which extends beyond said water discharging aperture (20), characterised in that the drainage valves (13) are provided on a wall of the body of the hydraulic structure (10, 31, 41, 52), said drainage valves (13) being arranged to drain the seepage water downwardly, by gravity. 19. The device for waterproofing and draining off seeped water according to claim 18, characterised in that the fore edge of the flat valving member (M) extends parallel to the water discharging aperture (20). 20. The device for waterproofing and draining off seeped water according to claim 19, characterised in that the fore edge of the flat valving member (M) extends beyond the water discharging aperture (20) for a length ranging from 5 to 300 cm, preferably from 20 to 150 cm. 21. The device for waterproofing and draining off seeped water according to claim 19, characterised in that the flat valving member (M) is in the form of flexible sheet material chosen selected from: Chlorinated polyethylene, Ethylene-vinyl acetate copolymer, Polyethylene, Polypropylene, Polyvinyl chloride, High density polyethylene, Linear low density polyethylene, Chlorosulphonate polyethylene, Ethylene-propylene copolymer, Polyisobutylene, Chloroprene rubber, Ethylene-propylene diene monomer, Butyl rubber, Nitrile rubber, Oxidised bitumen, Polymeric bitumen, taken singly or in combination. 22. The device for waterproofing and draining off seeped water according to claim 21, characterised in that the thickness of the sheet material is ranging from 0.2 to 20 mm.
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이 특허에 인용된 특허 (6)
Borca Bruno (Milan ITX) Ruscelli Emilio (Milan ITX), Fluid impermeable liner for a cavity in the earth.
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