CN103541340A

CN103541340A - Construction method of Z-shaped sand net ridge

Info

Publication number: CN103541340A
Application number: CN201310486197.XA
Authority: CN
Inventors: 娄志平
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-06
Filing date: 2012-10-06
Publication date: 2014-01-29

Abstract

The invention aims to provide a construction method of a Z-shaped sand net ridge and belongs to the technical field of desertification control engineering. A neatly arranged Z-shaped sand ridge 1m spaced and 10cm-25cm high is constructed on a desert in a direction perpendicular to the prevailing wind direction; the bottom edge of sand net 15cm-25cm in width on the top of the Z-shaped sand ridge is oriented down according to the height of the Z-shaped sand ridge; a mechanical tool is vertically inserted into the Z-shaped sand ridge; the top of the sand net is 1cm-5cm higher than the top of the Z-shaped sand ridge; the Z-shaped sand net ridge 1m spaced is formed; the sand ridge is bent in the Z shape. Multiple Z-shaped sand ridges 1m spaced and neatly arranged can block windy sand around, so that the mobile desert is fixed.

Description

The job practices on the husky ridge of Z-shaped sediment trapping net

Technical field

The present invention relates to sand control engineering technical field, be specially the job practices on the husky ridge of Z-shaped sediment trapping net.

Background technology

At present, in desert treatment, plastic wire construction net grid and high vertical sediment trapping net have been widely used, implement the interception in flow desert and fix, above-mentioned job practices must be prepared the support matching and support sediment trapping net, and therefore not only material cost is high, transportation and construction cost are also high, therefore, invent a kind of cost of manufacture cheap, without the job practices on the husky ridge of the significant Z-shaped sediment trapping net of support, easy construction, sand-fixing effect, be the needs of desert treatment.

The technical assignment of the technical problem to be solved in the present invention and proposition is the defect that overcomes prior art, the existing stent support sediment trapping net of using, change over without stent support, but with desert sand drift on the spot, build up the husky ridge, the job practices sediment trapping net potting on the fixing husky ridge of Z-shaped sediment trapping net of husky ridge intermediate supports.

Applicant has delivered the fixing of < < moving dunes and has utilized > > in 2009, in article, illustrated the principle on splayed net cage sand barrier fixed flow sand dune, illustrated at moving dunes top simultaneously and arranged after splayed net cage sand barrier, due to the husky characteristic toward eminence stream, tall and big moving dunes have just become tall and big mechanical sand barrier, therefore the mechanical sand barrier on textbook are hindered to husky effect formula V=4.5H ²sin a (formula I), is modified as V=4.5H ²+ [H1+H2] ²sin a (formula 2); In (formula 1), V is the husky amount of resistance, the height that H is mechanical sand barrier, and a is the angle of cut.In (formula 2), V is the husky amount of resistance, and the height .H1 that H is mechanical sand barrier is the height of moving dunes windward slope, and H2 is the height of moving dunes leeward slope, and a is the angle of cut.The top of exposing moving dunes due to splayed net cage sand barrier is less than 15cm, if apply mechanically the formula on textbook, be placed in the splayed net cage sand barrier at moving dunes top, it is very little hindering husky effect, but in fact expose the splayed net cage sand barrier that top of sand dune is less than 15cm, owing to there being the moving dunes under cylinder mould sand barrier to make liner, it hinders husky effect far away higher than being arranged on high vertical sediment trapping net on smooth desert, that be highly greater than 150cm.Therefore (formula 1) is inapplicable in the husky effect of resistance of the splayed net cage sand barrier at moving dunes top to constructing, and must just can describe the problem with (formula 2).At moving dunes top, arrange after splayed net cage sand barrier, by splayed net cage sand barrier, tackled the drift sand getting off and be deposited in top of sand dune, by promoting splayed net cage sand barrier, make the lifting that makes progress of moving dunes top, moving dunes just no longer move forward, harmful moving dunes just become useful mechanical sand barrier, and so the mechanical sand barrier of height, is cannot accomplish with the high vertical sediment trapping net that any method builds.Thereby the function that has shown the efficient intercepting of moving dunes desert.But the mechanical sand barrier being so efficiently easy to get on desert, is not also familiar with by people at present, fails so far to find correlation theory and experimental data in textbook.What on textbook, introduce is high vertical sand barrier to be arranged on to the waist of moving dunes, reaches the object of scabbling moving dunes, and people still process moving dunes as disaster so far.So applicant is managing by engineering practice, prove that moving dunes are to be transformed into tall and big mechanical sand barrier.

The job practices on the husky ridge of Z-shaped sediment trapping net is applicant from the fixing exploration job practices out the engineering practice of moving dunes of construction splayed net cage sand barrier.

Summary of the invention:

Potting formula sediment trapping net of the present invention be wide cut between 15cm to 25cm, the plastic wire of degree of porosity between 35% to 55%.

The job practices on the husky ridge of Z-shaped sediment trapping net, it is characterized in that: vertical with prevailing wind direction on desert, construction a lot of proper alignment, interval 1m, the husky ridge of the z shape of height between 10cm to 25cm, top from the husky ridge of z shape, according to the height on the husky ridge of z shape, wide cut on the sediment trapping net bottom limit between 15cm to 25cm down, with mechanical implement, vertically insert and embed in the Z-shaped husky ridge, the top margin of sediment trapping net exceeds Z-shaped Sha Geng top 1cm to 5cm, forms the husky ridge of z shape sediment trapping net of a lot of interval 1m; Because the husky ridge is the bending of z shape, the husky ridge of the z shape of many interval 1m, proper alignment, can block the dust storm at four sides, and its sand-fixing effect is close with net grid.Low ebb between the husky ridge of a lot of z shape sediment trapping net just can be planted psammophytes, makes the plant seedling of plantation exempt from dust storm infringement.

Accompanying drawing explanation

Fig. 1 is that schematic diagram is looked on a potting formula sediment trapping net of the present invention left side;

Fig. 2 is that potting formula sediment trapping host of the present invention looks schematic diagram;

Fig. 3 is the z shape of the present invention main schematic cross-section of looking in the husky ridge of blocking;

Fig. 4 is the husky ridge of z shape sediment trapping net of the present invention schematic top plan view;

In accompanying drawing: 1, potting formula sediment trapping net, 2, Desert Sand, 3, the husky ridge of z shape sediment trapping net.

Embodiments of the present invention

Now in conjunction with Figure of description, the invention will be further described: as shown in Figure 1 and Figure 2, potting formula sediment trapping net 1 of the present invention be wide cut between 15cm to 25cm, the plastic wire of degree of porosity between 35% to 55%.

As shown in Figure 3, Figure 4, the job practices on the husky ridge of z shape sediment trapping net is: vertical with prevailing wind direction on desert, construction a lot of proper alignment, interval 1m, the husky ridge of the z shape of height between 10cm to 25cm, top from the husky ridge of z shape, according to the height on the husky ridge of z shape, wide cut on sediment trapping net 1 base between 15cm to 25cm down, with mechanical implement, vertically insert and embed in the Z-shaped husky ridge, the top margin of sediment trapping net exceeds Z-shaped Sha Geng top 1cm to 5cm, forms the husky ridge 3 of z shape sediment trapping net of a lot of interval 1m; Because the husky ridge of z shape sediment trapping net is the bending of z shape, the husky ridge of z shape of many interval 1m, proper alignment, can block the dust storm at four sides, and it is close with net grid that it hinders husky effect.Low ebb between the husky ridge of a lot of z shape just can be planted psammophytes, makes the plant seedling of plantation exempt from dust storm infringement.

Claims

1. the job practices on the husky ridge of Z-shaped sediment trapping net, it is characterized in that: vertical with prevailing wind direction on desert, construction a lot of proper alignment, interval 1m, the husky ridge of the z shape of height between 10cm to 25cm, top from the husky ridge of z shape, according to the height on the husky ridge of z shape, wide cut on the sediment trapping net bottom limit between 15cm to 25cm down, with mechanical implement, vertically insert and embed in the Z-shaped husky ridge, the top margin of sediment trapping net exceeds Z-shaped Sha Geng top 1cm to 5cm, forms the husky ridge of z shape sediment trapping net of a lot of interval 1m.