CN2856174Y

CN2856174Y - Hollow blocks laying on slope of roadbed

Info

Publication number: CN2856174Y
Application number: CN 200520004190
Authority: CN
Inventors: 俞祁浩; 程国栋; 何乃武
Original assignee: Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Current assignee: Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Priority date: 2005-04-04
Filing date: 2005-04-04
Publication date: 2007-01-10
Anticipated expiration: 2015-04-04

Abstract

The utility model discloses a kind of hollow bulk for paving on slope of road foundation. The bulk is made of plant straw and cement and is in the shape of hollow cube with outer length of 30-200 mm and wall thickness of 10-50 mm or in the shape of hollow cuboid, sphere or cylinder. The utility model has the advantages of simple application, low production cost and convenient maintenance. The utility model overcomes shortcomings of the sun-shielding plate and crashed stone slope and has their advantages. By combining the hollow bulks in different shapes to a certain thickness, good sun-shielding effect and ventilation/cooling effect can be obtained; thus the utility model can be used for maintaining long-term frozen earth and building stability.

Description

Be laid on the domatic hollow pot of roadbed

Technical field

The utility model relates to a kind of hollow pot that is laid on the roadbed ramped surfaces.

Background technology

Around Qinghai-Tibet Railway country Important Project project; China cold district scientific worker is based on national conditions; under guidance with " cooling roadbed " scientific thought; be the active protection ever-frozen ground; reach the long-term stability of frozen soil engineering; closely carried out positive exploration and system research, taken the lead in proposing the engineering measure of sunbreaker and two kinds of domatic coolings of jackstone rubble bank protection embankment around various engineering measures.

Sunbreaker is that parallel embankment or cutting slope are domatic, lays layer of plate in the position of certain altitude, reaches the purpose of the domatic temperature of reduction by the direct radiation of the reflection sun.The field condition observed result shows that the domatic temperature of laying the sunbreaker measuring frequency section is more common domatic, will hang down twenties degree by day under the sufficiency at sunshine to thirties degree, by changing low approximately nearly ten degree of average temperature round the clock.It should be a kind of engineering measure that can effectively reduce bottom ever-frozen ground temperature.But in engineering practice, be difficult to apply.Its reason is, if this kind measure cost is higher, damage easily under adverse circumstances such as Qinghai-Tibet strong wind, the big large tracts of land of maintenance cost use embankment domatic by the destruction of rain drop erosion part can't repair, can't carry out domatic vegetation recovery, because white reflection works the mischief to traffic safety easily and problems such as environmental protection.

The measure of rubble slope protection works is the rubble at the certain particle diameter of the domatic laying one deck of embankment, and flowing slowly therein by air-flow accumulates in the cold energy in the external world bottom of macadam gradually, finally reaches the purpose of protection frozen soil.But it is not satisfactory from result's effect of engineering practice, mainly be reflected in accumulate that cold energy is limited, construction technology is comparatively complicated, cost space very high, in the higher regional rubble of wind sand amount will be crammed by wind sand gradually, do not have the effect of circulation of air, come to an end with inefficacy at last.

Summary of the invention

The purpose of this utility model is according to China's Permafrost Area natural climate condition and environmental characteristic, fully in conjunction with existing scientific achievement and existing problems, in line with making full use of natural cold-energy, in conjunction with engineering practice, advantage with above-mentioned two kinds of measures is a starting point, has proposed the domatic hollow pot of a kind of roadbed.By being laid on a kind of special-type hollow piece of embankment or cutting ramped surfaces, can block and eliminate irradiation and the heat effect of the sun to ramped surfaces, overcome the solar radiation harmful effect that levee slope face frozen soil engineering caused of satisfying the need; Utilize effective natural convection of air further to reduce domatic temperature simultaneously, finally safeguard the long-term stability of ever-frozen ground and engineering construction.

The purpose of this utility model is achieved in that

A kind of domatic hollow pot of roadbed that is laid on is made of plant stalk, sand and cement.The hollow pot of making is a cube, and the outer length of side of cube is 30～200mm, and wall thickness is 10～50mm.

Above-mentioned hollow pot is a cylinder, and the cylinder outer radius is 30～200mm, and height is 30～500mm, and wall thickness is 10～50mm.

Above-mentioned hollow pot is a cuboid, and the outer length of side is 30～200mm at the bottom of the cuboid, and wide is 20～150mm, and height is 30～500mm, and wall thickness is 10～50mm.

Above-mentioned hollow pot is a spheroid with holes, and the outer radius of spheroid is 10～100mm, and wall thickness is 10～50mm.

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

1, the utility model is easy to implement, cost is relatively low, easy maintenance.Because the material that uses is mainly soil property, engineering cost greatly reduces than sunbreaker and rubble bank protection.Main embodiment is field machining, laying, because the hollow pot bodily form is simple, and can be a large amount of fast at the scene, processing, stack.In the big area of wind sand amount, treat that wind sand runs up to when influencing its usefulness can pulverize again fast, process, lay, therefore safeguard simple, cost is very low;

2, hollow pot usefulness is obvious, has very strong practicality.The utility model not only has sunbreaker measure sunshade, aeration-cooling usefulness, and have the rock revetment measure cold-storage, prevent the domatic effect of rain drop erosion roadbed, finally can reach the temperature of effective reduction embankment and strengthen resistance to overturning, keep the purpose of the long-term stability of frozen soil engineering;

3, preserve the ecological environment, promote the same development of coordination of natural environment and human engineering.Enforcement by this kind measure, the destruction that not only can avoid a large amount of quarrying stones that fragile ecological environment is produced, the white visual pollution of avoiding sunbreaker to give out light strongly causing, potential danger to highway driving safety is brought can also help the recovery of vegetation more by the material that adds heterogeneity;

4, meet the natural law more.This kind measure can also make full use of the latent heat that precipitation absorbs and further reduce surface temperature in evaporation process;

5, the utility model can also be used for other cold district engineering, effectively protects ever-frozen ground and the long-term stability of keeping engineering construction.As needing the position of enhanced stability at petroleum pipeline, optical cable project etc., can reach the purpose of enhanced stability by stacking the special section bar material of this kind.

Description of drawings

Fig. 1 is the schematic diagram of the utility model hollow cubic body

Fig. 2 is the schematic diagram of the utility model hollow cylinder

Fig. 3 is that the utility model is at the domatic enforcement hollow pot of roadbed schematic diagram

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described again:

Embodiment 1

A kind of domatic hollow pot of roadbed that is laid on, hollow pot are to be that 20% cement and 45% sand constitute by weight 35% plant stalk and weight by hollow pot.The hollow pot of making is a cube 1, and the inside and outside length of side of cube is respectively 60mm, and wall thickness is the 25mm (see figure 1).By field condition processing or indoor plant produced the tangerine bar is pulverized and cement mixing, the water mixing form slurry that stirs charges into mould and solidifies, and one-shot forming is hollow cubic body i.

The hollow cubic representative is deposited in the roadbed ramped surfaces according to certain mode, or stacks the position (see figure 3) that one deck necessarily is thicker than needs cooling.In stacking process, can form a lot of spaces between each hollow cubic body 1, hollow cell cube itself just has very large space simultaneously, therefore this being combined in not only has good shaded effects after reaching certain thickness, and has good aeration-cooling usefulness.

Embodiment 2

The sand of getting weight and be 40% cement and 60% adds water and stirs, and processing is as embodiment 1.Making outer radius is 40mm, and height is 50mm, and wall thickness is hollow cylinder 2 (see figure 2)s of 25mm.Hollow cylinder 2 is deposited in the domatic of cutting, can reaches the effect of embodiment 1 equally.

Claims

1, a kind of domatic hollow pot of roadbed that is laid on is made of plant stalk, cement and sand or sand and cement, it is characterized in that hollow pot is a cube, and the outer length of side of cube is 30～200mm, and wall thickness is 10～50mm.