CN101041953A

CN101041953A - Multilayer net for draining fluids, particularly for geotechnical use

Info

Publication number: CN101041953A
Application number: CNA2006101495685A
Authority: CN
Inventors: P·马吉奥尼
Original assignee: Ternaix S P A
Current assignee: Ternaix S P A; Tenax SpA
Priority date: 2006-03-20
Filing date: 2006-11-20
Publication date: 2007-09-26
Anticipated expiration: 2026-11-20
Also published as: US20070218789A1; CN101041953B; ITMI20060498A1

Abstract

The present invention provides a multilayer net for draining fluids, particularly for geotechnical use, comprising an intermediate layer, constituted by a plurality of intermediate and substantially mutually parallel filaments, and first and second outer layers, which are constituted by first and second outer filaments which are inclined with respect to the intermediate filaments, the intermediate filaments forming an angle other than zero with respect to the main direction of extrusion of the net from an extruder.

Description

Be used for discharge liquid, be particularly useful for geotechnical multilayer net

Technical field

The present invention relates to a kind of multilayer net that is used for discharge liquid, relate in particular to and be used for geotechnical multilayer net.

Background technology

As everyone knows, United States Patent (USP) 5255998A number (this patent is included in this as reference) discloses a kind of multilayer net that is used for discharge liquid, this Chang Youyi of multilayer Netcom first floor filament parallel to each other constitutes, this first floor filament is associated with a second layer or intermediate layer filament, this second layer or intermediate layer filament also are parallel to each other, and be connected to one the 3rd layer of filament again, the 3rd layer of filament is parallel to each other, and tilts with respect to first floor filament and second layer filament.

In such embodiments, all layers are rigid connection each other, thereby provides rhone in the intermediate layer, and this rhone extends along the direction of extrusion of coming out from extruder.

Therefore, in case produce net and it assembled rolling, if it is used for for example providing dewatering installation on road, must partly use it, so that be positioned to the longitudinal extension that crosses road, because in fact the intermediate layer forms cannelure,, just can't eliminate discharge water if therefore use net with the axis of road with paralleling.

This method of operating need consume the quite long laying time, and very possible because each several part is incorrect settles side by side and because the incorrect setting of the joint between side by side all layer produces defective mounting.

And, the risk of the disabled material of waste is arranged, and laying time and cost can influence complete cost significantly.

Summary of the invention

Target of the present invention is, is used for discharge liquid by providing a kind of, is particularly useful for geotechnical multilayer net, and to eliminate above-mentioned shortcoming, this multilayer net can directly be laid along the longitudinal direction of road, and realizes the appropriate elimination of discharge water.

Because this target, an object of the present invention is, provide a kind of can be easily and the multilayer net of promptly installing, allow easily net volume rolling or circle, and be beneficial to transportation.

Another object of the present invention is the multilayer net that provides a kind of maximum that can in use provide reliability and safety owing to its specific architectural feature to guarantee.

Another object of the present invention is, provides a kind of and is used for discharge liquid, is particularly useful for geotechnical multilayer net, and it can easily be made by element that can buy usually on the market and material, and is very competitive from an economics viewpoint only.

This target and the purpose of these and other by a kind of according to the discharge liquid that is used for of the present invention, being particularly useful for geotechnical multilayer net reaches, they will become more apparent hereinafter, this multilayer net comprises an intermediate layer and first and second skins, this intermediate layer is made of the also filament parallel to each other substantially of a plurality of centres, this first and second skin is made of the first and second outside filaments that tilt with respect to described intermediate filament, it is characterized in that the main direction of extrusion that described intermediate filament comes out from extruder with respect to described net forms the angle of a non-zero.

Description of drawings

According to a kind ofly being used for discharge liquid, being particularly useful for the description of a preferable but non-exclusive embodiment of geotechnical multilayer net, further feature and advantage of the present invention will become more apparent, this description is that the non-limitative example by in the accompanying drawings illustrates, in these accompanying drawings:

Fig. 1 is the schematic plan view of net;

Fig. 2 is a sectional view of net;

Fig. 3 is a view that has laying tectal net thereon;

Fig. 4 is a schematic diagram of the laying step of the net under a road surface.

The specific embodiment

Referring to accompanying drawing, according to of the present invention, be used for discharge liquid, be particularly useful for geotechnical multilayer Netcom and often indicate with reference number 1, it comprises an intermediate layer 2, this intermediate layer 2 is provided by a plurality of intermediate filament 2a that are substantially parallel to each other that are positioned to.

Lay to the intermediate layer 2 with one first outer 3 and 1 second outer 4, they connect on face relative to each other, and provide by the first outside filament 3a and the second outside filament 4a, these filaments are advantageously parallel to each other on every layer, but with respect to the extension of intermediate filament and tilt.

Intermediate filament is attached to outside filament rigidly, thereby an integral product is provided, and this integral product directly obtains during the extruder extruding.

Feature of the present invention comprises, the extruding principal direction that intermediate filament 2a comes out from extruder with respect to net forms one non-0 angle, thereby what show as schematically shown in Figure 4 is such, when net 1 is placed to the longitudinal extension that is parallel to a road for example, the intermediate filament 2a of An Zhiing forms a plurality of sulculuses side by side, these sulculuses tilt with respect to the longitudinal extension of road, thereby realize easily water is got rid of to the outside.

Intermediate filament 2a is with respect to advantageously 20-90 ° at the inclination angle of the direction of extrusion, thereby obtains to form with respect to the direction of extrusion of net the groove of an angle, and this inclination angle can change with production requirement at that time.

If a dewatering installation will be provided under a road surface, and it is favourable settling a plurality of nets side by side, they is arranged to intermediate filament tilts relative to each other, thereby on the width of road, obtain a best drainage path.

Preferably, outside filament is with an angle respect to one another and with respect to an angle of intermediate filament and provide, thereby provides bigger mechanical strength to net, so that bear pressure better.

Advantageously, provide the first and second

outside coatings

7 and 8, they are designed to prevent that material from flowing into net, remain in inner free slot maintenance optimum state thereby make.

Must calculate the phase mutual edge distance of all outside filaments, thereby prevent coming in contact between the outer cover under the load, because this can cause the obstruction of rhone, thus the efficient of reduction multilayer net.

Should to above additional be that intermediate filament forms in fact together with outside filament has the different roughly diamondoid meshes at inclination angles mutually, has found that this shape is optimum.

Find with experimental technique that if provide intermediate filament with the appropriate angle with respect to the direction of extrusion, it also can advantageously make the first and second outside filaments be parallel to each other substantially each other, and perpendicular to the direction of intermediate filament; Therefore, outside filament has a direction substantially parallel with the direction of extrusion substantially.

Therefore, from the above description of having done, obviously the present invention has realized the target and the purpose that propose, especially the fact that will emphasize is, a kind of multilayer net is provided, and it can optimize dewatering installation, especially is applied to provide roadbed and similar item, because can lay this net continuously, and need not to use the technology traditional, that horizontal placing portion is provided with respect to the extension of road.

Thereby, the present invention be can imagine and many modification and variation allowed, all these is in the scope of appending claims.

All details all available other technical being equal to, will usually further replace.

Claims

1. one kind is used for discharge liquid, is particularly useful for geotechnical multilayer net (1), comprise: an intermediate layer (2) and first skin (3) and second skin (4), this intermediate layer (2) is made of filament (2a) a plurality of centres and parallel to each other substantially, this first skin (3) and second skin (4) are made of the first outside filament (3a) that tilts with respect to described intermediate filament (2a) and the second outside filament (4a), it is characterized in that the main direction of extrusion that described intermediate filament (2a) comes out from an extruder with respect to described net (1) forms the angle of a non-zero.

2. multilayer net as claimed in claim 1 is characterized in that, described intermediate filament (2a) forms an angle of 20-90 ° with respect to the main direction of extrusion.

3. multilayer net as claimed in claim 1 is characterized in that, the described first outside filament (3a) and the second outside filament (4a) are to tilt mutually.

4. multilayer net as claimed in claim 1 is characterized in that, the described first outside filament (3a) and the second outside filament (4a) are parallel to each other, and described intermediate filament (2a) roughly is 90 ° of layings with respect to the direction of extrusion of coming out from described extruder.

5. multilayer net as claimed in claim 1 is characterized in that, it comprises one first outer cover (7) and one second outer cover (8), and they are relevant with the second outside filament (4a) with the described first outside filament (3a) respectively.

6. use according to the one or more described multilayer net in the aforesaid claim, it is characterized in that, described net can vertically be settled with respect to the extension of a road, and horizontal dewatering installation is provided on this road.