CN2795297Y

CN2795297Y - Three rib earthwork water drain net

Info

Publication number: CN2795297Y
Application number: CN 200520058625
Authority: CN
Inventors: 高康
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-17
Filing date: 2005-05-17
Publication date: 2006-07-12
Anticipated expiration: 2015-05-17

Abstract

The utility model relates to a three-rib earthwork water drain net, which is characterized in that the utility model is formed by the spaced arrangement, the alternative stacking and the conglutination of rib strips of the upper, the middle and the lower layers, wherein water drain guide grooves are formed among the upper, the middle and the lower rib strips which are arranged in a spaced way, and the thickness H of the water drain net is bigger than or equal to 5 mm. Through the mode of the increase of the rib strip layers, the structure of the earthwork water drain net is changed, the water drain guide grooves which are two times as many as that of the existing double-layer earthwork water drain net are formed among the upper, the middle and the lower layers, and the water guide rate is enhanced. Because the size of the cross section of the three layers of rib strips which form the water drain net is identical or the middle rib strip is thicker, the utility model has high pulling resistance and pressure resistance strength in the longitudinal and transverse directions. The water drain guide grooves formed among the upper, the middle and the lower layers are not easily deformed under the situation of higher load, and geotextiles can be prevented \from being embedded in an earthwork net core. The expeditedrainage can be assured. If the geotextiles are compounded on double surfaces or a single surface in the three-rib earthwork water drain net, the three-rib compound earthwork water drain net can be formed. The three-rib earthwork compound water drain net has good efficiency of isolation, inverse filtering and water drainage.

Description

Three ribs geotechnique drainage network

[technical field]

The utility model relates to constructional materials, especially a kind of three rib draining geonets that are applicable to refuse landfill, tunnel, railway and highway drainage.

[technical background]

Water is the key factor that influences civil engineering safety, and earthwork engineerings such as refuse landfill usually, tunnel, highway and railway all need draining to handle, and this class engineering drainage requires: structure can keep very high plane handling capacity; Discharge structure has good resistance to compression; Can bear long-term heavy load; Discharge structure has enough shearing resistances, resistance to compression and tension stability.The choice relation of the material of drainage system is to the stable and success of project.At present, alternative adrainage material has two kinds: a kind of is natural sand or gravel adrainage material; Another kind is two rib geotechniques drainage networks.Natural sand or gravel adrainage material may can cause some engineering problems owing to the instability of construction and material, and the laying that side slope surpasses the certain angle material becomes very big problem, and the exploitation of sand and gravel also can cause very big environmental disruption.Two ribs geotechnique drainage network is formed by stacking by the two-layer polymer rib of arranging in length and breadth, because geotextile can embed drainage channel under certain pressure intensity, and the passing that drainage performance can be in time and reducing.Another has three layers of geonet of rib because transverse ribs is too thin along the volume length direction, hot strength is too low, destroy easily, be not suitable in the civil engineering that the strength of materials is had relatively high expectations, the draining that adds it is along its length, horizontal drainage performance is very low, is very restricted in the use.

[summary of the invention]

The purpose of this utility model is the deficiency that exists at above-mentioned geotechnological drainage network, and a kind of three rib draining geonets that can guarantee that all directions can unimpeded draining are provided.

Three ribs of the present utility model geotechnique drainage network is characterized in that: be spaced by the upper, middle and lower-ranking rib and alternately stack adhesion and forms formation draining guide groove between the rib of spaced upper, middle and lower; Thickness H 〉=the 5mm of drainage network.

Described upper strata rib is consistent with lower floor rib row column direction, and intermediate rib orientation and levels rib intersect.

Described rib cross section can be in circular, square, the ellipse one or both.

The sectional dimension of described rib is identical or intermediate rib is slightly thick.

Described three ribs geotechnique passes through the thermoplastic extrusion molding by high molecular polymer in the drainage network.

The utility model three ribs geotechnique drainage network design science, rational in infrastructure, simple.It changes the structure of geotechnological drainage network by the mode that increases the rib layer, forms the draining guide groove of many one times of existing double-deck geotechnological drainage network between the layer rib of upper, middle and lower, has improved hydraulic conductivity.Three layers of rib forming the drainage network have higher in length and breadth to tension and compressive strength, and the draining guide groove that forms between three layers of rib is not yielding under high loads, and can prevent that geotextile from embedding geotechnological web-roll core, can guarantee that draining is unimpeded.

If the utility model three ribs geotechnique drainage network can form three rib composite earthwork drainage networks at two-sided or single face composite geotextile.This three rib composite earthwork drainage networks have splendid isolation, instead filter and the draining effect.

Concrete structure of the present utility model is provided in detail by the following drawings and embodiment.

[description of drawings]

Fig. 1 is three a ribs geotechnique drainage network structural representation;

Fig. 2 is two-sided or the geocomposite structural representation of single face composite geotextile;

[specific embodiment]

Embodiment 1: can be clear that from Fig. 1 that three ribs geotechniques drainage network is spaced by upper, middle and lower-ranking rib 1,2,3 and alternately stack adhesion and form, that is: with the layer rib between for being spaced, upper strata rib 1 is consistent with lower floor rib 3 orientations, intermediate rib 2 orientations and levels rib 1,3 intersect, form the three-layer stereo web frame, 1,2,3 on spaced upper, middle and lower rib forms draining guide groove 4.Three layers of rib stack the thickness H=5mm of the three ribs geotechnique drainage network A of back formation.

Described upper, middle and lower-ranking rib 1,2,3 cross sections are ellipse, and the sectional dimension of intermediate rib 2 more upper and lower layer rib 1,3 is bigger.

Described three ribs geotechnique drainage network A passes through the thermoplastic extrusion molding by high density polymerising ethylene (HDPE).Promptly adopt three rotating die head thermoplastic expressing technique moulding, the structure of extrusion die is: the direction of rotation of intermediate die and interior external mold is opposite, by extruded velocity with extrude the crossing angle of the rotary speed control rib of inside and outside, middle mould.

Embodiment 2: can be clear that from Fig. 2 this is a kind of three rib composite earthwork drainage networks, it is by three ribs geotechniques drainage network A and be compounded in its double-edged geotextile B1, B2 and form, and the structure of the geotechnological drainage network A of described three ribs is identical with embodiment 1; Described geotextile B1, B2 are geotextiles; Geotextile B1, B2 are all with the molten sticking tow sides that are compounded in three ribs geotechnique drainage network A of thermoplastic.

These three rib composite earthwork drainage networks have very high tensile strength and anti-compression properties, the three ribs geotechnique drainage network A of three-D space structure can prevent that geotextile B1, B2 from embedding the draining guide groove 4 that rib forms, the current of guaranteeing draining guide groove 4 are unimpeded, and its drainability is fabulous.

Claims

1, a kind of three ribs geotechnique drainage network is characterized in that: be spaced by the upper, middle and lower-ranking rib and alternately stack adhesion and forms formation draining guide groove between the rib of spaced upper, middle and lower; Thickness H 〉=the 5mm of drainage network.

2, according to the described three ribs geotechnique of claim 1 drainage network, it is characterized in that: upper strata rib (1) is consistent with lower floor's rib (3) orientation, and intermediate rib (2) orientation and levels rib (1,3) intersect.

3, according to claim 1 or 2 described three ribs geotechnique drainage networks, it is characterized in that: upper, middle and lower layer rib (1,2,3) cross section can be in circular, square, the ellipse one or both.

4, according to claim 1 or 2 described three ribs geotechnique drainage networks, it is characterized in that: the sectional dimension of upper, middle and lower layer rib (1,2,3) is identical or intermediate rib (2) is thicker.

5, according to the described three ribs geotechnique of claim 3 drainage network, it is characterized in that: the sectional dimension of upper, middle and lower layer rib (1,2,3) is identical or intermediate rib (2) is slightly thick.