CN201305845Y

CN201305845Y - Wind-proof sand stablization barrier

Info

Publication number: CN201305845Y
Application number: CNU2008201797162U
Authority: CN
Inventors: 倪成君; 方华东; 屈建军; 贾挺平; 李贺青
Original assignee: MILITARY HARBOUR AIRPORT BARRA; Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Current assignee: MILITARY HARBOUR AIRPORT BARRA; Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Priority date: 2008-11-29
Filing date: 2008-11-29
Publication date: 2009-09-09
Anticipated expiration: 2018-11-29

Abstract

The utility model discloses a wind-proof sand stablization barrier which mainly comprises a tight sand-fixation net, a sparse sand resistance segment and a energy dissipating ventilated segment, wherein upper end of the sparse sand resistance segment connects with the energy dissipating ventilated segment, lower end connects with the tight sand stablization plate, and two sides fixed onto a upright post through locks, the slanting stitch are connected by nylon rope, forms fixation sand resistance fence frame, and are reinforced by nylon rope on two sides in forty five degree. The utility model solves weak points like single function, short work life and easy aeolian erosion and falling down in sand preventing and treating process, following principal of treatment in accordance with local conditions and fortification due to damage, and utilization of the tight sand stablization plate, sparse sand resistance segment and the energy dissipating ventilated segment prevents sand flow move path, stabilizes sand area, decreases sand flow harm, and improves coastal sand zone environment.

Description

The barrier of checking winds and fixing drifting sand

Technical field

The utility model relates to the comprehensive regulation of seashore, landlocked husky district's hazards of sand storms, specifically a kind of fence of checking winds and fixing drifting sand.

Background technology

The wind prevention and sand resistance fence is the generally crucial measures for sand prevention of measure in advance and extreme drought sand district of the dune-fixating forestation of employing of partly moistening at present husky district.In the control of sand damages such as desert highway, railway, cultural relics and historic sites, brought into play certain effect, hinder husky fence, the blue railway wicker of bag branch fence, Mo kao grotto at Dunhuang " A " font as Tarim Desert Highway nylon wire and reed and hinder husky fence and the Qinghai-Tibet Railway husky fence of the double resistance of gravel that adopts along the line, become the model that sand damage is successfully administered.

At present, very general to the application of wind prevention and sand resistance fence.But also not fully aware of to its protective mechanism, still rest on the exploratory stage qualitatively.For example, under the prerequisite of protection cost minimization, how can the appropriate design engineering parameter just make the best protection benefit of fence performance? therefore, more extensive, research in depth hinders the protection benefit of husky fence, inquire into the influence mechanism of different parameters combination to its protection benefit, not only abundant, the blown sand physics research contents, and help further perfect to the further investigation of the mutual infeed mechanism of dust storm and sand-prevention engineering theory, finally the research and development for open-air sand-prevention engineering scheme optimization design and sand prevention new material provide theoretical foundation.

Summary of the invention

In order to solve the harm of stream activity, the purpose of this utility model provides a kind of barrier of checking winds and fixing drifting sand.Utilize this safeguard procedures, the comprehensive regulation has been carried out in the activity of alongshore wind sand drift coastal suiting measures to local conditions.Confirm through practice: the harm of administering the activity of alongshore wind sand drift that is implemented in of present technique measure wins initial success.

The purpose of this utility model is achieved in that

A kind of barrier of checking winds and fixing drifting sand mainly is made up of tight Sand-fixation net, the husky section of thin saturating resistance and energy dissipating ventilation section, it is characterized in that:

(a) closely Sand-fixation net is to be made by the PE material, bottom width 2.0m, and height be 10cm, and degree of porosity is 10%, and there is snap close on the limit, upper end, section is linked mixedly with dredging saturating resistance sand, and both sides, the end are fixed on the timber, and Shamian Island is close on the base;

(b) dredging the husky section of saturating resistance is the sand-proof net of being made by HDPE, and the sand-proof net degree of porosity is 40%, the about 2.0mm in aperture.Limit, sand-proof net lower end links with limit, tight Sand-fixation net upper end snap close, and to be fixed in spacing be on the 3.0m column, column buried depth 50-100cm, and its upper and lower side all adopts nylon rope to be connected with diagonal, constitute the husky fence framework of fixing resistance, and reinforce with nylon rope at the both sides miter angle;

(c) the energy dissipating ventilation section is netted, is positioned to dredge resistance sand section top thoroughly, and resistance sand section is connected with dredging thoroughly in its lower edge, and degree of porosity 55% highly is 20cm.

The beneficial effect of advantage of the present utility model and generation is:

1, according to the architectural feature of stream, promptly under various air velocities, has good linear relationship between elevation and sand content (%) logarithmic scale.The utility model be provided with closely fix the sand plate, dredge husky section of saturating resistance and energy dissipating ventilation section.Utilize the plate degree of porosity characteristics of closely fixing the sand, stop that elevation is at 2-4 centimetre, the drift sand of 20-30%; Dredge the above sand content of 70-80% in husky section elevation that blocks below 10 centimetres of saturating resistance; The energy dissipating ventilation section blocks the interior above sand content of 2-6% of elevation more than 10 centimetres.Have the good effect of checking winds and fixing drifting sand, the drift sand more than 90% is blocked by sand-protecting barrier, has solved fence in the control hazards of sand storms, shortcomings such as function singleness, life-span weak point and the lodging that subjects to erode;

2, sand-proof net is fixed on the column, column buried depth 50-100cm, and the column upper and lower side all adopts nylon rope to be connected with diagonal, constitutes the husky fence framework of fixing resistance, and reinforces with nylon rope at the both sides miter angle; Structure is firm, and is indeformable, and cracky can not combine with plant measures, plants psammophytes between barrier, makes sand dune fixation.

3, the utility model is applied in southeastern coast national defense facility hazards of sand storms control, and practice shows: the present technique measure has not only produced higher defense economy and has been worth, and plays facilitation to improving local ecological environment and socioeconomic status.In addition, this method of checking winds and fixing drifting sand is applied in historical relic's protection, the railway in landlocked dust storm area dust storm along the line is prevented and treated.

Description of drawings

Fig. 1 is the utility model safeguard procedures configuration schematic diagram.

The specific embodiment

Specifically technical measures are as shown in Figure 1:

The check winds and fix drifting sand long 200m of functional form fence, high 70cm, windward side and both sides in need protection zone 5, control is main buries to the husky source of side direction protection zone 5 being constituted the wind erosion sand.

Retain the buffer strip of about 50-80m behind zone of protection, lay 1mxlm, highly be 20cm that with the Shanghai shifting sand area degree of porosity is 10% tight Sand-fixation net 1 at buffer strip, there is snap close on the limit, upper end, is linked mixed with mediation resistance sand sections 2.During construction, according to the protection zone 5 of laying, drive piles at interval by 3m earlier, buried depth 50cm is fixed on tight Sand-fixation net 1 on the timber again, and the bottom is close to Shamian Island and is got final product.

2, dredging the husky section 2 of saturating resistance is sand-proof nets of being made by HDPE, that is, about height 1.0m, degree of porosity is 40%, the about 2.0mm in aperture.Be to guarantee the protection life-span, the position that hinders husky fence is about 50m place outside the distance guard plot generally.According to the dust storm erosion condition, hinder husky fence multiple tracks can be set, generally can satisfy requirement of shelter by the 2-3 road.Hinder husky fence spacing 25m, it is on the 3.0m column 4 that each road sand-proof net is fixed in longitudinal pitch.It is the garden wood of 8cm that column 4 adopts diameter, buried depth 50cm.Column 4 upper and lower sides and diagonal all adopt the nylon rope link, constitute the husky fence framework of fixing resistance, and reinforce with nylon rope at the both sides miter angle.

3, energy dissipating ventilation section 3 is positioned at the functional form fence top of checking winds and fixing drifting sand, and degree of porosity is 55%, highly is 20cm.During construction, earlier its lower edge and the husky section of mediation resistance 2 usefulness snap closes links, then Web materials is tiled in dredge husky section 2 of saturating resistance above, use on the T sprig vertical columns 4.

Claims

1, a kind of barrier of checking winds and fixing drifting sand is mainly by tight Sand-fixation net (1); Dredge saturating husky section of resistance (2) and energy dissipating ventilation section (3) and form, it is characterized in that:

(a) closely Sand-fixation net (1) is to be made by the PE material, bottom width 2.0m, and height be 10cm, and degree of porosity is 10%, and there is snap close on the limit, upper end, is linked mixedly with dredging saturating resistance sand section (2), and both sides, the end are fixed on the timber, and Shamian Island is close on the base;

(b) dredging the saturating husky section of resistance (2) is the sand-proof net of being made by HDPE, and the sand-proof net degree of porosity is 40%, the about 2.0mm in aperture; Limit, sand-proof net lower end links with limit, tight Sand-fixation net (1) upper end snap close, and to be fixed in spacing be on the 3.0m column (4), column (4) buried depth 50-100cm, and its upper and lower side all adopts nylon rope to be connected with diagonal, constitute the husky fence framework of fixing resistance, and reinforce with nylon rope at the both sides miter angle;

(c) energy dissipating ventilation section (3) is netted, is positioned to dredge the husky section of resistance top thoroughly, and the husky section of resistance (2) is connected with dredging thoroughly in its lower edge, and degree of porosity 55% highly is 20cm.