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A vertical hydrothermal coupling model test device and test method

A model test device and water-heat coupling technology, which is applied in the direction of material thermal development, can solve the problems of inability to accurately quantify the influence of seepage, and the difficulty of uniform water flow through the test box.

Active Publication Date: 2021-08-20
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

[0003] At present, the existing test devices for studying the development of frozen walls under the action of seepage field usually lay out freezing pipes in the test box, and provide head pressure on one side of the box to simulate groundwater. The main problems of this type of test device It is difficult to ensure that the water flows uniformly through the cross-section of the test box, so it is impossible to accurately quantify the influence of seepage on the freezing temperature field

Method used

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  • A vertical hydrothermal coupling model test device and test method
  • A vertical hydrothermal coupling model test device and test method
  • A vertical hydrothermal coupling model test device and test method

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Embodiment

[0099] Such as Figure 1 to Figure 18 As shown, the number of frozen tubes is 3, and the test is carried out according to the geometric similarity criterion, and the selection of C l for 5.

[0100] In the coal mine vertical shaft freezing method construction process, the diameter of the actual freezing pipe is generally 100 mm, and the actual spacing of the freezing pipes is generally 1200 mm. Taking this as the design parameter, the diameter of the freezing inner pipe 39 is 20 mm, and the diameter of the freezing outer pipe 40 is 30 mm. , the spacing of the freezing tubes is 250mm, and the side length of the square mesh of the measuring point layout net 34 is 50mm. 20 thermocouple strings 35 are arranged on the measuring point layout network 34, and each thermocouple string 35 is all vertically arranged, and the 20 thermocouple strings 35 are parallel to each other, and each thermocouple string 35 includes 16 thermocouple strings in the vertical direction. I. The distribu...

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Abstract

The invention belongs to the technical field of artificial ground freezing method construction, in particular, the invention relates to a vertical hydrothermal coupling model test device and a test method. The test device includes seepage system, freezing system and measuring system. The test method includes: Step 1, constructing a uniform water seepage environment through the seepage system; Step 2, constructing a frozen wall through the freezing system, and recording the process data of the formation of the frozen wall through the measurement system; The freezing system and the seepage system thaw the frozen wall to the same temperature as the water temperature of the constant temperature water tank. The vertical hydrothermal coupling model constructed by the present invention is constructed in a uniform water seepage environment, and is equipped with a measurement system, which can directly observe the development process and shape of the frozen wall, is easy to operate, and can achieve the effect of seepage on the freezing temperature field The impact is accurately quantified for research purposes.

Description

technical field [0001] The invention belongs to the technical field of artificial ground freezing method construction, in particular, the invention relates to a vertical hydrothermal coupling model test device and a test method. Background technique [0002] In the construction process of coal mine shaft and tunnel freezing method, groundwater seepage will cause the freezing temperature field to develop unbalanced in all directions, resulting in differences in the thickness of the frozen wall in all directions. Therefore, the influence of seepage on the freezing temperature field is accurately quantified. Research is very necessary. [0003] At present, the existing test devices for studying the development of frozen walls under the action of seepage field usually lay out freezing pipes in the test box, and provide head pressure on one side of the box to simulate groundwater. The main problems of this type of test device It is very difficult to ensure that the water flows u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 荣传新董艳宾杨凡王彬李承涛孙世成
Owner ANHUI UNIV OF SCI & TECH
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