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Flexible rope net gabion

a flexible rope and gabion technology, applied in the field of scour protection, can solve the problems of affecting the use of the water body bed, the polyester bags used in ep2341592, ep2341592 are not very durable, and the water body bed wear gradually poses a significant economic problem

Pending Publication Date: 2022-09-08
GARWARE WALL ROPES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides durable and eco-friendly rope net gabions that are flexible and easy to transport. These gabions can be made from polymers like polyolefins and polyesters, which are resistant to degradation in corrosive environments.

Problems solved by technology

Accordingly, when an underwater structure is embedded in the water body, the structure acts as a resistor of the tidal current, a vortex flow occurs, the surrounding ground is scooped around the structure, so-called washing in which the structures foundation weakens and may lead to collapse.
The gradual wearing of the water body bed poses a significant economic problem.
As, once a significant amount of soil is eroded from water body bed, an embedded structure may lose its stability and the loose footing may lead to tumbling of the structure or cause a significant damage to the structure, in case the structure is supported by plurality embedded structures.
However, in view of an article titled “Effect of Seawater on Ageing of Polyester Composites and Study of Aged Composite Polymer” by KUUK, Kerem and another article titled “Degradation Effects in Polyester and Vinyl Ester Resins Induced by Accelerated Aging in Seawater” by VISCO, A M et al., it is clear that the polyester bags as used in EP2341592 are not very durable and might lose their usefulness over a period of time.
Further, the polyester sack gabions as described in EP2341592 pose another environmental problem relating to micro plastic generation.
The rope gabions of IN195352 are relatively inflexible and cannot be transported easily.
These gabions have limitations in flexibility, durability, transportability and also not useful in multiple applications and utilities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

e of HDPE Net Products to Oxidation

[0077]Test specimens of HDPE net were stored in water at 80° C. for a period of 28 days, with the water changed at least every seven days and moved at least once per day. Test specimens were exposed, freely hanging, in a regulated laboratory oven at an elevated temperature of 100° C. for a period of 112 days. After completion of this oxidation process the test specimens were subjected to a tensile strength test. For the machine direction test, the test specimens incorporated 12 yarn connection points, i.e., 22 complete yarns, and for the cross direction test, the test specimens incorporated 4 yarn connection points, i.e., 18 complete yarns

[0078]Control specimens of HDPE were nominally identical to the test specimens. The control specimens were stored in water at 80° C. for a period of 28 days, with the water changed at least every seven days and moved at least once per day. The control specimens were not subjected to oxidation in a laboratory oven....

example 4

of Polyester Net Products in Water

[0082]Test specimens of 18 ply virgin polyethylene terephthalate net were immersed in water for a period of six hours, at a temperature of 10° C. or 20° C. Turbidity of the water was measured hourly in NTU (Nephelometric Turbidity Units; 3 NTU=1 mg / l). The test was repeated with recycled polyethylene terephthalate nets. As seen in Table 4 at both 10° C. and 20° C., turbidity of water exposed to recycled polyethylene terephthalate was higher than the turbidity of water exposed to virgin polyethylene terephthalate. Higher turbidity from polyester correlates with increased release of particles of microplastics. As shown in Table 4, and also in FIGS. 5A and 5B, turbidity from recycled polyester after 6 h exceeds turbidity from virgin polyester by a factor of about 2 to about 3, depending on temperature.

TABLE 4Turbidity of polyester in water.Turbidity (NTU)Virgin PET,Virgin PET,Recycled PET,Recycled PET,Time (hr)10° C.20° C.10° C.20° C.010.210.512.212.71...

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PUM

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Abstract

A transportable, flexible rope net gabion useful for scour protection includes a lifting ring, a plurality of polymer ropes connected to the lifting ring, a polymer net connected to the polymer ropes, and a plurality of stones or boulders. Up to 45% of the volume of the polymer net is packed with the stones or boulders, so that the rope net gabion can be evenly positioned around a structure to be supported. The polymer ropes, the polymer net, or both the polymer ropes and the polymer net are made using virgin high density polyethylene (HDPE).

Description

FIELD OF INVENTION[0001]The invention is in the field of providing scour protection. More particularly, the current invention relates to flexible rope net gabion for scour protection.BACKGROUND OF THE INVENTION[0002]Scouring is a phenomenon whereby the top loose material of the upper soil in body of water viz., river bed, river banks, stream bed, stream bunds, sea bed or coastal area is eroded as a result of tidal activity or bed-bank movement. This phenomenon occurs due to disturbance created in the tidal flow pattern due to an embedded structure or overall seabed movement or “sand waves”.[0003]The phenomenon is more proclaimed in case of scouring action on natural river or stream beds and also on the side slopes of the river banks, bridge piles, offshore structures, wind turbines etc. whereby a structure is embedded in the water body. Accordingly, when an underwater structure is embedded in the water body, the structure acts as a resistor of the tidal current, a vortex flow occurs...

Claims

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Application Information

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IPC IPC(8): E02B3/12E02B17/00E02D29/02
CPCE02B3/123E02B17/0017E02D29/0208E02B3/00
Inventor RAUT, SANJAY VASUDEOKULKARNI, THIRUMALAI PURUSHOTTAMRAMAKRISHNAN, VIJAYGARWARE, VAYUPATHARE, GAURAV
Owner GARWARE WALL ROPES