阅读说明：本技术 一种适用于污染场地水平阻隔系统的废弃网球复合保温层 (Abandonment tennis composite heat preservation suitable for pollute place horizontal separation system ) 是由 毕钰璋 杜延军 于 2019-10-25 设计创作，主要内容包括：本发明公开一种适用于污染场地水平阻隔系统的复合保温层,包括由废气网球与填充材料组成的保温层,所述保温层下部设置有压实黏土层,上部设置有保护层,所述填充材料采用导热系数＜0.1的黏土材料与固化剂按照重量比为1:20混合而成,所述固化剂采用质量比为0.8:1:2:1.5的硅酸钠、电石渣粉、粉煤灰和贝壳粉的干法混合制备得到。本发明解决了部分保温材料的保温效果不足以及废弃网球的污染问题。(The invention discloses a composite heat-insulating layer suitable for a horizontal blocking system of a polluted site, which comprises a heat-insulating layer consisting of waste gas tennis balls and a filling material, wherein a compacted clay layer is arranged at the lower part of the heat-insulating layer, a protective layer is arranged at the upper part of the heat-insulating layer, the filling material is prepared by mixing a clay material with a heat conductivity coefficient of less than 0.1 and a curing agent according to a weight ratio of 1:20, and the curing agent is prepared by dry mixing of sodium silicate, carbide slag powder, fly ash and shell powder according to a mass ratio of 0.8:1:2: 1.5. The invention solves the problems of insufficient heat insulation effect of partial heat insulation materials and pollution of waste tennis balls.)

1. The composite heat-insulating layer is characterized by comprising a heat-insulating layer consisting of waste gas tennis balls and a filling material, wherein a compacted clay layer is arranged at the lower part of the heat-insulating layer, a protective layer is arranged at the upper part of the heat-insulating layer, the filling material is prepared by mixing a clay material with a heat conductivity coefficient of less than 0.1 and a curing agent according to a weight ratio of 1:20, and the curing agent is prepared by dry mixing of sodium silicate, carbide slag powder, fly ash and shell powder according to a mass ratio of 0.8:1:2: 1.5.

2. The composite insulation layer suitable for the horizontal barrier system of the polluted site as claimed in claim 1, wherein the exhaust tennis balls in the insulation layer are arranged in a close, neat and single layer, compacted by a filling material and then maintained by grouting, the grout used is clay grout, and the thickness of the insulation layer is 18 cm.

3. The composite insulation layer suitable for the horizontal barrier system of the polluted site as claimed in claim 1, wherein the compacted clay layer is made of clay, the process is layered compaction, the quality control indexes are satisfied that the thickness is not less than 45cm, and the gas diffusion coefficient is not less than 10^-6m²And/s, removing harmful stones, soil blocks and scraps in the soil layer.

4. The composite insulation layer suitable for use in a horizontal barrier system of a contaminated site according to claim 1, wherein the protective layer has a thickness greater than 40 cm.

5. The composite heat-insulating layer suitable for the horizontal barrier system of the polluted site as claimed in claim 1, wherein the protective layer is sequentially divided into a root system puncture preventing layer, a drainage layer and an impermeable layer from top to bottom; wherein, the root system penetration preventing layer is composed of local available soil; the drainage layer is made of gravel soil materials or geotechnical drainage materials; the barrier layer is made of geomembrane.

The technical field is as follows:

the invention relates to the technical field of heat preservation, in particular to a composite heat preservation layer structure suitable for a horizontal blocking system of a polluted site.

Background art:

the heat preservation technology is currently well applied in many fields, such as: in the frozen soil engineering and the cold region engineering of geotechnical engineering, the problem of treating frozen soil layer foundation is often encountered, and polystyrene foam plastic is commonly used as an insulating layer. The heat insulation treatment is carried out on the frozen soil area, the frost heaving or thawing sinking of the frozen soil area can be effectively restrained, and the freezing depth can be reduced by 50% due to the thick heat insulation layer.

According to analysis results, the heat insulation material reduces the heat entering the roadbed active layer by 3/4 every year, which indicates that the existence of the heat insulation layer well protects the upper limit of the frozen soil.

The condition that the compacted clay layer in the polluted site can generate water loss cracking under the high-temperature condition in summer influences the service life of the compacted clay layer, the heat preservation layer laid above the compacted clay layer can effectively prevent an upper heat source from transmitting downwards, and the problem of water loss cracking under the high-temperature condition can be effectively solved.

Tennis ball contamination is a very important problem. Tennis balls are produced in tremendous quantities each year, but their use does not last for a long time, and players often discard new balls, so the number of discarded tennis balls is also enormous. Although a portion of the tennis balls are recycled for use in manufacturing toys, tens of millions of tennis balls end up in landfills each year.

The sealed air is a good heat insulation material, the waste tennis balls contain air layers, and the heat conductivity coefficient is 0.025[ W/(m ∙ k) ], so that the waste tennis balls as the heat insulation material have great advantages in price and heat insulation effect.

Tennis balls contain certain heavy metals, the specific content of which is shown in the table below, and in order to prevent secondary pollution, the problem of heavy metal content needs to be solved.

The invention content is as follows:

the invention aims to provide a composite insulating layer suitable for a horizontal blocking system of a polluted site aiming at the existing problems, and solves the problems of insufficient insulating effect of partial insulating materials and pollution of waste tennis balls.

The above purpose is realized by the following technical scheme:

the composite heat-insulating layer comprises a heat-insulating layer consisting of waste gas tennis balls and a filling material, wherein a compacted clay layer is arranged at the lower part of the heat-insulating layer, a protective layer is arranged at the upper part of the heat-insulating layer, the filling material is prepared by mixing a clay material with a heat conductivity coefficient smaller than 0.1 and a curing agent according to a weight ratio of 1:20, and the curing agent is prepared by dry mixing of sodium silicate, carbide slag powder, fly ash and shell powder according to a mass ratio of 0.8:1:2: 1.5.

The composite heat-insulating layer is suitable for a horizontal blocking system of a polluted site, waste gas tennis balls in the heat-insulating layer are closely, tidily and singly arranged and compacted by adopting a filling material, and then the heat-insulating layer is manufactured by grouting maintenance, wherein the used grout is clay grout, and the thickness of the heat-insulating layer is 18 cm.

The composite heat-insulating layer is suitable for the horizontal barrier system of the polluted site, the compacted clay layer adopts local clay, the process is layered compaction, the quality control indexes of the composite heat-insulating layer meet the requirements that the thickness of the composite heat-insulating layer is not less than 45cm, and the gas diffusion coefficient is not less than 10^{- 6}m²And/s, removing harmful stones, soil blocks and scraps in the soil layer.

The composite heat-insulating layer is suitable for a horizontal barrier system of a polluted site, and the thickness of the protective layer is more than 40 cm.

The composite heat-insulating layer is suitable for the horizontal barrier system of the polluted site, and the protective layer is sequentially divided into a root system puncture preventing layer, a drainage layer and an impermeable layer from top to bottom; wherein, the root system penetration preventing layer is composed of local available soil; the drainage layer is made of gravel soil materials or geotechnical drainage materials; the barrier layer is made of geomembrane.

Has the advantages that:

1. compared with the existing heat insulation material, the waste tennis composite heat insulation cushion layer has extremely low heat conductivity coefficient because tennis balls contain air, and has great advantage in the aspect of heat insulation effect.

2. The waste tennis balls are easy to obtain and low in price, so that the construction cost of the project is greatly reduced, the economic benefit is improved, and the advantage condition is created for popularization and application of the invention.

3. The waste tennis balls can be recycled, so that the resource waste can be reduced, the ecological environment can be protected, the sustainable development can be realized, and the method is a good method for killing a plurality of birds with one stone.

Description of the drawings:

fig. 1 is a schematic view of a vertical cross-sectional structure of the present invention.

FIG. 2 is a top view of an insulation layer.

Fig. 3 is a schematic view of the process steps of laying a tennis ball insulating layer in a certain field.

Notation in the figure: 1-discarding tennis balls; 2-a filling material; 3-vegetable layer; 4-planting soil layer; 5-a protective layer; 6-compacting clay layers

The specific implementation mode is as follows:

the invention is described in further detail below with reference to the figures and the specific embodiments.

The composite heat-insulating layer comprises a heat-insulating layer consisting of waste gas tennis balls and a filling material, wherein a compacted clay layer is arranged at the lower part of the heat-insulating layer, a protective layer is arranged at the upper part of the heat-insulating layer, the filling material is prepared by mixing a clay material with a heat conductivity coefficient smaller than 0.1 and a curing agent according to a weight ratio of 1:20, and the curing agent is prepared by dry mixing of sodium silicate, carbide slag powder, fly ash and shell powder according to a mass ratio of 0.8:1:2: 1.5.

The composite heat-insulating layer is suitable for a horizontal blocking system of a polluted site, waste gas tennis balls in the heat-insulating layer are closely, tidily and singly arranged and compacted by adopting a filling material, and then the heat-insulating layer is manufactured by grouting maintenance, wherein the used grout is clay grout, and the thickness of the heat-insulating layer is 18 cm.

The composite heat-insulating layer is suitable for a horizontal barrier system of a polluted site, and the thickness of the protective layer is more than 40 cm.

The composite heat-insulating layer is suitable for the horizontal separation system of the polluted site, and the protective layer is sequentially divided into a root system puncture preventing layer, a drainage layer and an impermeable layer from top to bottom. Wherein, the root system puncture-preventing layer is composed of local available soil, and can prevent the harmful effects of root system puncture, animal excavation and the like; the drainage layer is mainly made of gravel soil materials or geotechnical drainage materials and mainly has the functions of reducing the water head at the upper part of the impermeable layer and reducing the osmotic pressure; the impermeable layer is mainly composed of a geomembrane and is mainly used for preventing rainwater on the upper part from invading the heat preservation layer, so that the heat preservation efficiency is reduced. The composite heat-insulating layer is suitable for the horizontal barrier system of the polluted site, the compacted clay layer adopts local clay, the process is layered compaction, the quality control indexes of the composite heat-insulating layer meet the requirements that the thickness of the composite heat-insulating layer is not less than 45cm, and the gas diffusion coefficient is not less than 10^-6m²And/s, harmful stones, soil blocks and other debris should be removed from the soil layer. Fig. 3 shows the process steps of laying a tennis ball insulating layer in a certain field:

a, clearing and digging a soil layer; b, paving a compacted clay layer; c: laying an insulating layer; d: laying a protective layer and compacting; e, paving planting soil; f: and (5) planting vegetation. Grouting maintenance can be carried out in the later stage of the site, and the used slurry is clay slurry.

It should be understood that the above examples are only for illustrating the specific embodiments of the technical solutions of the present invention, and are not intended to limit the scope of the present invention. Various equivalent modifications and alterations of this invention will occur to those skilled in the art after reading this disclosure, and it is intended to cover such alternatives and modifications as fall within the scope of the invention as defined by the appended claims.