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Computing method for water content and temperature of frozen earth

A calculation method and technology of water content, which can be used in calculations, special data processing applications, instruments, etc., and can solve problems such as difficulty in solving equations

Inactive Publication Date: 2014-09-10
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

And due to the complexity of the soil itself, it is very difficult to use theoretical methods to solve the equations for studying the law of soil water and heat transfer.

Method used

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  • Computing method for water content and temperature of frozen earth
  • Computing method for water content and temperature of frozen earth
  • Computing method for water content and temperature of frozen earth

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the specific implementation of the method for calculating the water content and temperature of frozen soil of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] The calculation method of the frozen soil water content and temperature of the embodiment of the present invention, such as figure 1 shown, including the following steps:

[0037] S100, constructing a one-dimensional moisture transport equation as:

[0038] ∂ θ l ∂ t = ∂ ∂ z [ D ( ...

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Abstract

The invention discloses a computing method for the water content and the temperature of frozen earth. The method comprises the following steps: constructing a one-dimensional moisture movement equation as shown in the specification; constructing a one-dimensional hydro-thermal coupling equation as shown in the specification; dividing studied earth into N earth layers in the vertical direction and dividing the study time into M time periods to form a difference grid; solving the moisture movement equation and the hydro-thermal coupling equation by a differential method according to the difference grid to obtain the water contents and temperatures at nodal points of the earth layers. According to the method, the water content and temperature of earth is solved by the differential method, and solution formulas are utilized indeed and applied to solution judgment of practical earth parameters. The method plays an important role in studying performance parameters at any time and any depth of seasonally frozen earth, and is beneficial to master the state of frozen earth in real time to make a more reasonable plan of use.

Description

technical field [0001] The invention relates to the field of numerical simulation, in particular to a method for calculating the water content and temperature of frozen soil. Background technique [0002] Under the condition of soil freezing, the research methods of water and heat transport in unsaturated soil can be roughly divided into two types: experimental analysis method and theoretical analysis method. The experimental analysis method is to observe and record the data of the change process of moisture and temperature in the seasonal freeze-thaw soil through the actual measurement of the test, and use the actually obtained observation data to analyze the water and heat migration in the soil and its changing law. However, since the experimental data are generally observed under fixed environmental conditions, the results have great differences and non-uniqueness. Relatively speaking, the theoretical analysis method has a certain degree of universality and flexibility, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 张超一赵燕东聂铭君颜小飞刘卫平高志涛张新李宁
Owner BEIJING FORESTRY UNIVERSITY
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