CN2302289Y

CN2302289Y - Earth work fabric soft revetment

Info

Publication number: CN2302289Y
Application number: CN 97236349
Authority: CN
Inventors: 朱佳忠; 焦瑞芳; 芮品钢; 徐雅俊
Original assignee: CHANGZHOU INDUSTRY AND TRADE COMBINED PLASTIC KNITTING GENERAL WORKS
Current assignee: CHANGZHOU INDUSTRY AND TRADE COMBINED PLASTIC KNITTING GENERAL WORKS
Priority date: 1997-06-17
Filing date: 1997-06-17
Publication date: 1998-12-30
Anticipated expiration: 2007-06-17

Abstract

The utility model relates to an earth work fabric soft revetment which is composed of an earth work fabric pad and a ballast weight object. The utility model is characterized in that ribbing strips are needled on the earth work fabric pad at intervals, bag tying strips are needled on each ribbing strip at intervals, and the ballast weight object is tied on bag tying strips. The utility model has the advantages of simple structure, convenient split joint, easy laying, variation following underwater topography after sinking, no windfall loss, standardization production carried out in the factory, and reduction of water engineering total cost with greater amplitude.

Description

The geotextile soft raft

The utility model relates to hydraulic engineering, especially for waterway regulation, and the geotextiles of engineerings such as dam basis preventive works.

At present, building a dam, in the hydraulic engineerings such as waterway regulation or shore protection, often adopt the soft raft of in the riverbed, laying one geotextile composition,, only allow water to pass through because geotextile can play the loaded filter effect, do not allow great soil group move, therefore, have high-impact brush ability.But, its shortcoming be general geotextile when laying, when especially current being arranged, geotextile moves easily.Because when general laying geotextile, at first be that geotextile is spread out, because the geotextile of individual layer is very light, easily by the flowing water detrusion.So, in infall process, adopt jackstone or the way of banketing increases the weight of weight on the geotextile face, and do not make geotextile in the process of sedimentation by water wave or current detrusion.But jackstone can evenly not distribute, because after the jackstone, because the four sides of geotextile is spill in the middle of being held, in the process of jackstone, stone is with automatic stream central concave place, stone is many in the middle of producing, the stone on both sides is few, and skewness causes geotextile to be deposited on riverbed, bottom, the river face and can produce bigger displacement with original location, like this, same riverbed area will use more geotextile, and the cost of construction is increased.On the other hand, because stress concentrates on spill, easily make the geotextile damage of breaking.

The purpose of this utility model provides a kind of soft raft of geotextile, and it is simple in structure, and splicing is convenient, is easy to lay, and geotextile has the higher weight intensity of bearing, and construction and engineering material expense are cheap.

The technical solution of the utility model is: a kind of geotextile soft raft, it is made up of geotextile pad and ballast object, the length that the geotextile pad adopts is 20-60 rice, width is a 5-25 rice, designing requirement on engineering is decided, on the width of geotextile pad, make sinew adding strip at interval, article two, the spacing distance between the sinew adding strip is a 0.3-0.8 rice, the width of sinew adding strip is 4-8 centimetre, adopt after the sinew adding strip, making the geotextile pad bear weight intensity increases, on every sinew adding strip, stitch 2-4 centimetre wide be a bag bar, the length of system's bag bar is 0.9-1.3 rice, article two, the spacing that is bag bar is a 0.25-0.8 rice, with being that a bag bar is pinioned ballast, two of general employings are that a bag bar is pinioned ballast, ballast adopts at sack the inside dress stone, sand, the material of soil and so on, it is microscler that sack is, so ballast also is microscler, ballast geotextile level up on the face be arranged as vertical, horizontal being spaced, the arrangement of such vertical and one horizontal, make the pressure that on the geotextile pad, is subjected to very even, and in infall process uniform settlement.Because soft raft is to be formed by connecting by polylith geotextile pad, overlapping mode splicing is adopted in their connections between width, and the width of overlap joint is a 0.25-1 rice, and the width of overlap joint is during according to maximum differential settlement, distance decision that may the changing of the relative positions between block.Changing of the relative positions distance is big, the width of overlap joint is just big, adopt the reverse collar of making at the sinew adding strip two ends to pinion connection with rope or wire each other with regard to the connection between the length, oppositely the girth of the collar is 10-30 centimetre, oppositely the collar can utilize the prolongation part of sinew adding strip, also can make on sinew adding strip with other material.The geotextile pad adopts woven polyolefine section bar material, and it is good to have anti-aging, in light weight, whole continuity, and easy construction, corrosion resistance, good penetrability have advantages of higher tensile strength, with characteristics such as soil combine well.So, in all kinds of hydraulic engineerings, when adopting soft raft of the present utility model, be difficult for by the water detrusion, construction equipment when laying soft raft is simple and easy, easy to operate, the quality of lay soft raft is high again, and cost is cheap, and contact with the riverbed face, the loss that can not meet accident, geotextile pad soft raft can grown with the geotextile pad at the construction field (site), splice at the cross direction scene, and factory can carry out standardized production to the geotextile pad, reduced cost of production, product is easy to transportation again, and construction hoisting is convenient, thereby has reduced the total cost of hydraulic engineering by a relatively large margin.

Accompanying drawing 1 is a geotextile mat structure schematic diagram.

Accompanying drawing 2 is the distribution schematic diagram of ballast on the geotextile pad.

Accompanying drawing 3 is the schematic diagram of the reverse collar.

Embodiment:

Get woven polyolefine type geotextile pad (5), its length is 50 meters, width is 10 meters, to make a length be that 50.56 meters width are 5 centimetres totally 19 of sinew adding strips (1) 50 centimetres at every interval on width, the also available woven polyolefine thing of the material of sinew adding strip (1), end at every reinforcing rib (1) grows (1) 25 centimetre on geotextile pad, and fold back is sewn into the reverse collar (3) to it, and its girth is 20 centimetres.The geotextile pad was 10 centimetres after the other end contracted, and fold back is sewn into the reverse collar.Go up the interval at every reinforcing rib (1) and make system's bag bar (2), its distance at interval is respectively 0.37 meter and 0.5 meter, and the length that is a bag bar (2) is 1 meter, and width is 3 centimetres, bind ballast (4) then, each ballast adopts microscler sack the inside to load onto rubble, sand.Each ballast (4) is that a bag bar (2) is pinioned with two, and the planar alignment of ballast (4) on geotextile pad (5) is the longitudinal and transverse (see figure 3) that is staggered.When constructing at the construction field (site), if water is drained in the riverbed, as long as one by one geotextile pad (5) is overlapped on wide direction, the width of overlap joint is 25 centimetres, on long direction, the reverse collar (3) of two geotextile pads (5) is through together and pinions with rope, like this, can connect into big geotextile soft raft arbitrarily, yet bind ballast (4).If construct having under the streamflow regime, that does not adopt workboat location, tension lay soft raft, ways of connecting is same as described above, and just on wide direction, it is wideer that the width of overlap joint is wanted, flow rate of water flow is little, about 30 centimetres stably, if flow velocity is big, very much not steadily then the width of overlap joint is big for wave, decides on the scene, but, the wideest can be above 1 meter.

Claims

1, a kind of geotextile soft raft, it is made up of geotextile pad and ballast object, it is characterized in that geotextile pad (5) is gone up makes sinew adding strip (1) at interval, goes up at every sinew adding strip (1) that to make at interval be a bag bar (2), pinions ballast (4) with system's bag bar (2).

2, soft raft according to claim 1, it is characterized in that the spacing distance between two sinew adding strips (1) is a 0.3-0.8 rice, the width of sinew adding strip (1) is 4-8 centimetre, and two is that spacing between bag bar (2) is a 0.25-0.8 rice, and the length that is a bag bar (2) is 0.9-1.3 rice.

3, soft raft according to claim 1 is characterized in that there is the reverse collar (3) at the two ends of every sinew adding strip (1), and oppositely the girth of cover (3) is 10-30 centimetre.

4, soft raft according to claim 1 is characterized in that being that its planar alignment at geotextile pad (5) of ballast (4) that a bag bar (2) is pinioned is longitudinal and transverse being spaced.

5, soft raft according to claim 1, it is characterized in that two connections between the geotextile pad width are to adopt the overlapping mode splicing, lap width is a 0.25-1 rice, and the connection between the length is to adopt rope or wire that the reverse collar (3) of two mats is pinioned.