Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A slope protection embankment with block stone layer with the functions of sunshade and ventilation and cooling

A technology for ventilation, cooling, and slope protection of roadbeds, which is applied to roads, roads, infrastructure projects, etc., can solve the problems of high production cost of concrete hollow bricks, unavoidable long-term aeolian sand blockage, cumbersome laying and construction, etc., and achieves easy construction and maintenance. The effect of weakening the direct heating effect and the simple paving process

Active Publication Date: 2018-07-31
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yu Qihao and others proposed a "concrete hollow block for protecting the slope of permafrost subgrade" (patent number: ZL200510065341.8). Although this measure has a certain effect of sunshade and ventilation and cooling, due to the fact that the concrete hollow block The cost is relatively high, and it is cumbersome to lay the roadbed slope, and it is easy to roll down along the roadbed slope; secondly, after repeated freezing and thawing, the material is vulnerable; at the same time, because the pores of the hollow block are in an open state, it cannot Avoid long-term blown sand to block it

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A slope protection embankment with block stone layer with the functions of sunshade and ventilation and cooling
  • A slope protection embankment with block stone layer with the functions of sunshade and ventilation and cooling
  • A slope protection embankment with block stone layer with the functions of sunshade and ventilation and cooling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-2 As shown, a block stone layer slope protection subgrade with sunshade and ventilation and cooling functions is composed of embankment 1, block stone layer 2, geotextile 3, clay 4, and natural foundation 5. Fill the embankment 1 on the compacted natural foundation 5, the height of the embankment is 2.0-4.0m, the top width of the embankment 1 is 12.0m, the side slope of the embankment is 1:1.5, and the block stone layer 2 and the geotextile 3 are laid in turn on the side slope of the embankment and rammed clay 4; the particle size of the block stone layer 2 is controlled between 12-30cm, the horizontal thickness is 120cm, and the vertical thickness is 80cm, randomly thrown and squeezed to keep the slope smooth. In order to make full use of the different cooling effects of the open and clay-closed structures of the block ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heightaaaaaaaaaa
widthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a block stone layer slope protection roadbed with sun shading and ventilation cooling efficacy. The structure of the block stone layer slope protection roadbed is characterized in that block stone layers, earthwork clothes and rammed clays are sequentially laid on embankment slopes respectively; the particle size of the block stone layers is controlled to be 12-30cm, the thickness of each of the block stone layers is 80-120cm, and the void ratio of block stones is 25-30%; and random throwing and extrusion are carried out, and the block stone layers horizontally extend 2.0m width in the slope bottom position to form open boundaries. One earthwork cloth is laid on the slop of each of the block stone layers, clays are laid on the earthwork clothes, and ramming is carried out to realize compactness. The sunshade effect of clay layers is used to weaken the heating effect of sunshine radiation on the slopes of the roadbed; and the slope block stone layers are used to reinforce natural convection and forced convection in cold season block stone layers, so the cold energy suction capacity of the roadbed is improved, and heat in the roadbed is carried away. The heat shielding effect of the block stone layers is used in warm seasons to obstruct invasion of extraneous heat, so the heat suction capacity in the warm seasons is effectively controlled. The block stone layer slope protection roadbed realizes reduction of the temperature of overlaid soil below the slope protection roadbed, and plays a positive and great role in maintenance of long-term stability of several-years frozen soil zone roadbeds.

Description

technical field [0001] The invention relates to a block stone layer slope protection subgrade structure with functions of sunshade, ventilation and temperature reduction, which can effectively reduce the permafrost temperature at the lower part of the subgrade and improve the stability of the permafrost subgrade. Background technique [0002] Frozen soil is a geological body with a temperature below 0°C and contains ice. Frozen soil that has been frozen for two or more years is called permafrost. Because permafrost is very sensitive to changes in the external environment, especially permafrost with high ice content, environmental temperature changes or external disturbances will cause the temperature of permafrost to rise and the ice to melt, resulting in a decrease in its strength and strong compression features. If the railway or highway embankment is located in the permafrost region, in addition to the permafrost disturbance caused by changes in construction and environm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/00E01C3/06E02D17/20
CPCY02A30/60
Inventor 刘明浩牛富俊林战举罗京尹国安李安原
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products