Overlapping device of upper geotechnical cloth of composite geo-membrane

A technology of composite geomembrane and lapping device, which is applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of narrow suture belt, material waste, unbearable, etc., to reduce tensile stress, make full use of materials, and withstand Effect of Seam Area Improvement

Inactive Publication Date: 2015-02-11
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The suture zone between the upper geotextiles sewn in this way is very narrow, so it is difficult to bear large tensile stress; there are a lot of surplus upper geotextiles at the lap joints that have not been utilized, resulting in waste of materials

Method used

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  • Overlapping device of upper geotechnical cloth of composite geo-membrane
  • Overlapping device of upper geotechnical cloth of composite geo-membrane

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0014] Such as figure 1 As shown, the present invention includes a base plate 1 and a top plate 6. The top plate 6 is located above the base plate 1. One end of the upper steel strip 3 is connected to the top plate 6, and the other end is connected to one end of the middle steel strip 4. The other end of the middle steel strip 4 is connected to the bottom. One end of the steel belt 5 is connected, and the other end of the lower steel belt 5 is connected to the bottom plate 1 . The upper steel strip 3, the middle steel strip 4 and the lower steel strip 5 form a Z-shape, and the joints make the Z-shaped steel strips elastic. . A needle-exiting device 7 is installed on the bottom of the top plate 6 , and a needle-bearing plate 2 adapted to the position of the needle-exiting device 7 is provided on the bottom plate 1 . The needle-exiting device 7 can adopt a structure ...

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Abstract

The invention discloses an overlapping device of upper geotechnical cloth of a composite geo-membrane. The device is characterized by comprising a bottom plate (1) and a top plate (6) located above the bottom plate (1), wherein one end of an upper steel strip (3) is connected with the top plate (6), while the other end is connected with one end of a middle steel strip (4). The other end of the middle steel strip (4) is connected with one end of a lower steel strip (5), while the other end of the lower steel strip (5) is connected to the bottom plate (1). A needle out device (7) is installed at the bottom of the top plate (6) which is provided with a needle bearing plate (2) adaptive to the needle out device (7) in position. When the device provided by the invention is operated, two pieces of geotechnical cloth are clamped in appointed positions, and the device is moved while the cloth is pressed and sewed, so that the composite geo-membrane is conveniently overlapped.

Description

technical field [0001] The invention relates to a lapping device for an upper layer geotextile of a composite geomembrane, in particular to a lap joint mode and a construction method of an upper layer geotextile in a composite geomembrane. Background technique [0002] Composite geomembranes are mainly used for anti-seepage of geotechnical engineering such as earth-rock dams, isolation of railway subgrades, and diffusion of external loads. Its forms are divided into one cloth and one film and two cloths and one film. Lap joints between geotextiles. Under normal circumstances, the lower layer of geotextile does not need to be stitched (stretch it, just fold it together), just weld the geomembrane, and the upper layer of geotextile can be sewn with a hand-held sewing machine. However, after the upper layer of geotextile is sewn by this hand-held sewing machine, only a small part of the seam can bear the tension because only the margin is sewn according to the length direction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/00
Inventor 张磊杨兰兰沈长松鲁洋
Owner HOHAI UNIV
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