CN105544331A - Desert roadbed woven bag bagged sand seal coat and construction method thereof - Google Patents

Abstract

The invention relates to a desert roadbed woven bag bagged sand seal coat and a construction method thereof. The seal coat comprises sand bags which are arranged at two sides of a sand foundation and used for basing soil and sand bags which are stacked above the sand foundation, wherein an opening of each sand bag is folded downwards and arranged with the adjacent sand bags in an embedding manner; and the cross section of a seal coat formed by the sand bags is in a rectangular shape or a trapezoidal shape. By paving the sand foundation, the sand foundation is compacted and leveled, bags are filled with sand and paved, multiple persons in one group fetch the sand locally, the sand fills the bags to be paved into sand bag seal coat, after the sand bags are completely paved, a steel-wheel road roller is used for statically pressing the sand bags, and the paving of the whole roadbed is completed. The desert roadbed woven bag bagged sand seal coat and the construction method thereof aim at solving the problems of the existing loess seal coat that the environment is likely to damage, the price is high, the pavement frost boiling is likely to happen when the existing loess seal coat encounters water, resulting in early damage of the pavement; the loess seal coat is replaced by the sand bag seal coat, so that not only is the road investment reduced, the earth volume reduced and the pavement harm reduced, but also the environment is protected to a certain extent, the energy is saved, and the environment is protected.

Description

A kind of desert roadbed knitting bagged sand seal layer and construction method thereof

Technical field

The present invention relates to a kind of desert roadbed knitting bagged sand seal layer and construction method thereof, be a kind of road foundation sealing design being applied to desert area, be applicable to the desert area that the road materialss such as clay are limited, be conducive to protecting farmland, environment and reduction investment.

Background technology

Soviet Union's Sulige gas field main exploration area distribution is in the Mu us dese middle and south, and being positioned at Wushen Banner, Ordos City, Etuoke Banner and Etuoke Front Banner domestic, is one of gas field of current Largest In China.Sulige gas field of reviving for the end of the year 2014 has road 8307km, and wherein asphalt roads 883.718km accounts for whole road network 10.64%; Gravel road 633.1km, accounts for whole road network 7.62%; Before boring, dirt road and rural sidewalk 6790km, account for 81.74% of whole road network.Owing to being subject to Investment Influence, gas field road construction standard is low, and region local economy is less-developed residing for gas field, highway construction relatively lags behind, the local road network that can rely in the block of gas field is less, so road is not enough to the support force of Gas field construction, but the quick growth of production capacity puts forward higher requirement to local transit transportation environment.

According to Soviet Union's Sulige gas field road integrated planning, the road that Soviet Union's Sulige gas field will be implemented is more than 1000 kilometer, invests about 1,200,000,000 yuan.Roadbed, road structure, as the important component part of road, have significant impact to the service life, investment etc. of road.After current Soviet Union Sulige gas field occupation road subgrade construction completes, (object of sealing improves the total bearing capacity of husky base to do the loess sealing of one deck 30cm at Sha Jishang, if do not do sealing ground surface material can be absorbed in Sha Jizhong, thus reduce pavement strength), then on sealing, do road surface, the intensity reduction that affects being subject to underground water and rainwater intrusion because of loess sealing causes pavement destruction, simultaneously because desert area loess is less, and all at land burial, exploitation loess cost is expensive, welding.

For above-mentioned situation, be necessary to explore the roadbed sealing material be suitable under this particular surroundings of desert, make the roadbed sealing of the Sulige gas field road in desert area that is more suitable for reviving, reducing the construction costs, reduce Desert Highway disease, reduce late maintaining and take.Finally reach protection of the environment, optimal design, Accelerating The Construction progress, promoting enterprise continue, comprehensive, scientifical development, better for gas field development service.

Summary of the invention

The object of the invention is to overcome existing desert roadbed and do sealing, destructible environment owing to using loess, cost is high, meets the water capacity and easily causes boiling in road surface, cause the problem of road surface early damage.

For this reason, the invention provides a kind of desert roadbed knitting bagged sand seal layer, comprise be positioned at Sha Ji both sides for building the sandbag of soil and being positioned at the sandbag stacked above husky base, described sandbag sack is folding down, and shelves with adjacent sandbag embedded squeezing; The sealing tangent plane that described sandbag is formed is rectangular-shaped or trapezoidal shape.

Pitch is cast with in gap between described sandbag and sandbag.

The woven bag that described sandbag selects anti-aging braided geotextile material to weave, the existing sandy soil in roadbed both sides, splendid attire desert form.

Described sandbag is when splendid attire sandy soil, and the height of sandy soil is apart from sack 40cm.

Described sandbag length is 2190 ~ 2115mm, and the folding footpath width of sandbag is 5.7 ~ 38.7cm, and the density of sandbag is 10 orders, and its mesh porosity is 30% ~ 45%.

Make after three egress edges of described sandbag all reserve 8cm and make suture, wherein bottom interface edge is to make suture for benchmark, and every 1cm that outwards increases increases by one suture, increases by three road sutures altogether.

A construction method for desert roadbed knitting bagged sand seal layer, comprises the steps:

Step one: lay husky base, and husky base is carried out compacting leveling;

Step 2: dress husky paving bag, many people one group, get sand on the spot, are laid to sandbag sealing after being packed by sand;

Step 3: after sandbag is laid, adopts steel roller to carry out static pressure to it, completes the laying of whole roadbed.

Described step 3 before proceeding, first carries out pitch paying process to the gap between the sandbag in sandbag sealing.

Beneficial effect of the present invention: the present invention makes full use of the abundant drift-sand resource of desert area and woven bag carries out husky base sealing as raw material, under the husky rheobasic prerequisite of guarantee, has and has following advantage:

(1) reduce Highway investment, every kilometer of sandbag sealing is than loess sealing small investment 2.1 ten thousand yuan, and simultaneously because sandbag is not water funk, roadbed height also can be lower, reduces earth volume;

(2) pavement disease is decreased;

(3) protection of the environment, every kilometer of about 0.6 mu, vegetation that can reduce because exploitation loess destroys.

Accompanying drawing explanation

Below with reference to accompanying drawing, the present invention is described in further details.

Fig. 1 is tangent plane structural representation of the present invention.

Description of reference numerals: 1, Sha Ji; 2, sandbag.

Detailed description of the invention

Embodiment 1:

The present embodiment provides a kind of desert roadbed knitting bagged sand seal layer, as shown in Figure 1, comprise be positioned at Sha Ji 1 both sides for building the sandbag 2 of soil and being positioned at the sandbag 2 stacked above husky base, described sandbag 2 sack is folding down, and shelves with adjacent sandbag 2 embedded squeezing; The sealing tangent plane that described sandbag 2 is formed is rectangular-shaped or trapezoidal shape.

After current Soviet Union Sulige gas field occupation road subgrade construction completes, then at the loess sealing that Sha Jishang is one deck 30cm, then on sealing, do road surface.Owing to doing sealing with loess, local section underground water and rainwater invade loess sealing and cause boiling in road surface to destroy, and in addition because desert area loess is less, Mining Transport loess cost is expensive, causes environmental disruption simultaneously.This seal coat structure of the present embodiment, make use of Sandy Soil Resources abundant on desert and cost woven bag inexpensively carries out construction operation, and loess sealing of comparing, this material is more firm and with low cost.

The sandbag arrangement that embedded squeezing is shelved, make can also restrict mutually between every one deck sandbag to pin down, the structure of formula is more firm; The tangent plane structure of rectangle, relatively material saving and labour, trapezoidal tangent plane structure then can make sealing more firm, these two kinds of structures can be with the use of, employing tangent plane for section bad environments is trapezoidal sealing framework, common section adopts the seal coat structure of rectangle, like this, not only laborsaving but also firm.

Embodiment 2:

In the present embodiment, the main component sandbag 2 of sealing is described further, in the present embodiment, the woven bag that sandbag 2 selects anti-aging braided geotextile material to weave, the existing sandy soil in roadbed both sides, splendid attire desert form, anti-aging braided geotextile material have anti-aging, density is little, acid and alkali-resistance, corrosion-resistant, intensity advantages of higher.

Sandbag 2, when splendid attire sandy soil, husky be about 40cm be advisable to be filled to sack, by folding for sack down and shelve with adjacent sandbag embedded squeezing.

When making geotechnological woven bag, sandbag 2 length is 2190 ~ 2115mm, and the folding footpath width of sandbag 2 is 5.7 ~ 38.7cm, and the density of sandbag 2 is 10 orders, and its mesh porosity is 30% ~ 45%, and geotechnological woven bag Essential Performance Requirements is in table 1.

Table 1 woven bag Essential Performance Requirements

Make after three egress edges of sandbag 2 all reserve 8cm and make suture, wherein bottom interface edge is to make suture for benchmark, and every 1cm that outwards increases increases by one suture, increases by three road sutures altogether, to strengthen the rigidity bottom fin.

Embodiment 3:

The present embodiment provides the construction method of a kind of desert roadbed knitting bagged sand seal layer, comprises the steps:

Step one: lay husky base 1, and husky base 1 is carried out compacting leveling;

Step 2: dress husky paving bag, many people one group, are such as one group with two people, get sand on the spot, with dress with paving, be laid to sandbag 2 sealing after being packed by sand.

Step 3: after sandbag 2 is laid, adopts steel roller to carry out static pressure to it, completes the laying of whole roadbed.For protection sandbag, before subbase construction, construction section traffic is closed.

The concrete cost of loess sealing and sandbag sealing is shown in Table 2,

The different sealing expense contrast of table 2

Sealing type	Unit price	Every kilometer needs quantity	Every kilometer of expense
				Loess sealing	33 yuan/side	2000 sides	6.6 ten thousand yuan
Sandbag sealing	0.6(material)+1.2(is artificial) unit/bag	25000 bags	4.5 ten thousand yuan

Known by table 2, sandbag sealing, compared to loess sealing, reduces Highway investment, and every kilometer of sandbag sealing is than loess sealing small investment 2.1 ten thousand yuan, and simultaneously because sandbag is not water funk, roadbed height also can be lower, reduces earth volume.

In sum; this desert roadbed knitting bagged sand seal layer of the present invention and construction method thereof; for existing loess sealing destructible environment; cost is high; meet the water capacity and easily cause boiling in road surface, cause the problem of road surface early damage, loess sealing is changed to sandbag sealing; reducing Highway investment, reduce earth volume, decrease pavement disease, protect environment to a certain extent, is the measure of energy-conserving and environment-protective.

More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.

Claims (6)

1. a desert roadbed knitting bagged sand seal layer, it is characterized in that: comprise be positioned at Sha Ji (1) both sides for build soil sandbag (2) and be positioned at the sandbag (2) stacked above husky base, described sandbag (2) sack is folding down, and shelves with adjacent sandbag (2) embedded squeezing; The sealing tangent plane that described sandbag (2) is formed is rectangular-shaped or trapezoidal shape.

2. desert as claimed in claim 1 roadbed knitting bagged sand seal layer, it is characterized in that: the woven bag that described sandbag (2) selects anti-aging braided geotextile material to weave, the existing sandy soil in roadbed both sides, splendid attire desert form.

3. desert as claimed in claim 2 roadbed knitting bagged sand seal layer, is characterized in that: described sandbag (2) is when splendid attire sandy soil, and the height of sandy soil is apart from sack 40cm.

4. desert as claimed in claim 2 or claim 3 roadbed knitting bagged sand seal layer, it is characterized in that: described sandbag (2) length is 2190 ~ 2115mm, the folding footpath width of sandbag (2) is 5.7 ~ 38.7cm, and the density of sandbag (2) is 10 orders, and its mesh porosity is 30% ~ 45%.

5. desert as claimed in claim 4 roadbed knitting bagged sand seal layer, it is characterized in that: make after three egress edges of described sandbag (2) all reserve 8cm and make suture, wherein bottom interface edge is to make suture for benchmark, every 1cm that outwards increases increases by one suture, increases by three road sutures altogether.

6., as a construction method for the desert roadbed knitting bagged sand seal layer in claim 1 to 5 as described in any one, it is characterized in that, comprise the steps:

Step one: lay husky base (1), and husky base (1) is carried out compacting leveling;

Step 2: dress husky paving bag, many people one group, get sand on the spot, are laid to sandbag (2) sealing after being packed by sand;

Step 3: after sandbag (2) is laid, adopts steel roller to carry out static pressure to it, completes the laying of whole roadbed.