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Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe

A water-containing roadbed and low-temperature technology, which is applied in the field of clustered low-temperature heat pipes to prevent frost heave disasters of water-containing roadbeds in cold areas, can solve the problems of affecting driving safety and lack of anti-freeze heave measures, and achieves increased absorption area, convenient on-site construction, and uninterrupted heating effect

Inactive Publication Date: 2015-05-06
江苏中圣压力容器装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the lack of effective anti-frost heave measures for high-cold water-containing roadbeds affects driving safety, to invent a method for preventing frost-heave disasters of water-containing roadbeds in cold regions, and to provide a corresponding clustered low-temperature heat pipe

Method used

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  • Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe
  • Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe
  • Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe

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Experimental program
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Effect test

Embodiment 1

[0025] Such as Figure 1-3 shown.

[0026] A method for preventing frost heaving disasters of water-containing roadbeds in cold regions, which installs T-shaped cluster solar low-temperature heat pipes that can transmit solar energy or electric energy heat into the foundations in the roadbeds. When the working medium in the evaporating section of the low-temperature heat pipe absorbs heat, it rises and conducts to the condensing section of the low-temperature heat pipe. into the water-containing roadbed so that the temperature of the water-containing roadbed is higher than the freezing temperature, and the working medium after releasing heat returns to the evaporation section to absorb heat under the action of gravity, and this cycle works to keep the temperature of the water-containing roadbed above the freezing temperature. Prevent the occurrence of subgrade frost heaving disasters.

[0027] The low-temperature heat pipe of the present invention is mainly composed of an ev...

Embodiment 2

[0032] Such as Figure 1-3 shown.

[0033] A cluster-type low-temperature heat pipe for preventing frost heave disasters of water-containing roadbeds in cold regions, which has a T-shaped structure and includes an upper header 3, a lower header 1, and a condensation heat release pipe 4. The upper header 3 and the lower header 1 pass through A plurality of cluster tubes 2 are communicated, and the condensation heat release pipe 4 is communicated with the middle part of the upper header 3 (as figure 1 ); the upper header 3, the lower header 1 and the bundle tube 2 form a T-shaped horizontal line, the condensation heat release pipe 4 forms a T-shaped vertical line, and the upper header 3, the lower header 1 and the bundled tube 2 Installed in at least one side of the incubator 7 made of a glass box 9 with good translucency, insulation materials are installed around and at the bottom of the incubator 7; auxiliary electric heating pipes 6 are installed in the lower header 1, The ...

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Abstract

The invention discloses a method for preventing and controlling freeze-expanded damage to water-containing subgrade in a cold region and a bunched low-temperature heat pipe. The method is characterized in that a T-shaped bunched solar low-temperature heat pipe capable of transmitting solar energy or electric energy heat into the subgrade is arranged in the subgrade; when the environmental temperature is lower than 0 DEG C, a working medium on the evaporation segment of the low-temperature heat pipe absorbs solar energy heat and rises to be conducted into the condensation segment of the low-temperature heat pipe; on cloudy days, the working medium on the evaporation segment is heated through electric heating, and is conducted into the condensation segment of the low-temperature heat pipe; heat is transmitted into the water-containing subgrade through the condensation segment in order that the temperature of the water-containing subgrade is greater than the icing temperature; the working medium which releases heat returns back into the evaporation segment under the action of gravity to absorb heat, and the abovementioned work is performed circularly in order that the temperature of the water-containing subgrade is kept higher than the icing temperature, so that the occurrence of freeze-expanded damage to the subgrade is prevented. The method is simple and reliable, the phenomenon of frost heaving of the subgrade can be effectively avoided, and the transportation safety is ensured.

Description

technical field [0001] The invention relates to a technology for preventing frost heaving of roads, in particular to a maintenance technology for water-containing roadbeds in high-cold regions, in particular to a method for preventing frost-heaving disasters of water-containing roadbeds in cold regions and the clustered low-temperature heat pipes used therein. Background technique [0002] At present, the winter protection of seasonal frozen soil roadbeds in cold regions (including: railways, highway roadbeds, power transmission and transformation tower foundations, etc.) is mostly to export and dissipate the underground heat in time to prevent the subgrade from subsiding due to the melting of frozen soil. Ensure the stability of the roadbed. At this time, the low-temperature heat pipe used includes an evaporation heat absorption section, a heat insulation section and a condensation heat release section. Generally, the evaporation heat absorption section and the heat insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00F24J2/24F24J2/32E01C3/06F24S10/70F24S10/95
CPCY02E10/44
Inventor 郭宏新杨峻刘丰李奇陈兴元詹岳赵中岩汪夏
Owner 江苏中圣压力容器装备制造有限公司
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