Data measuring device and method in crack sample seepage-heat transferring process

Abstract

The invention discloses a data measuring device and method in the crack sample seepage-heat transferring process. In the single crack sample seepage-heat transferring experiment process, a temperaturemeasuring line in a detecting passage of false rock cores at an inlet can measure the temperature Tin2 of water at an inlet of a crack, a temperature measuring line in a detecting passage of the false rock cores at an outlet can measure the temperature Tout of water at an outlet of the crack in real time, a temperature measuring line in a through hole can measure the temperature Tf of water alongthe way in the crack in real time, and a temperature measuring line in a counter bore can measure the temperature Ti of rock of the inner surface along the way of the crack in real time; the designedcrack width measuring device can accurately measure the variable quantity of the width b of the crack, a probe perpendicular to the surface of the crack closely fits the outer surface of a sample, the influence generated by deformation of a glue sheath is eliminated, and the measuring error is greatly eliminated. The inlet end of a clamper is specially designed, temperature calibration is conducted on the inlet end in advance, the relationship of the temperature of water at the inlet of a clamper and the temperature of water at the inlet of the crack under different environment conditions isfirstly studied, and therefore the temperature of water at the inlet of the crack can be accurately controlled to reach the standard design value.

Description

technical field [0001] The invention relates to a measuring device, in particular to a data measuring device and a measuring method in a fissure sample seepage-heat transfer process, belonging to the field of mine geothermal and thermal damage prevention and control. Background technique [0002] With the deep mining in eastern my country and some central regions, high-temperature mines are becoming more and more common. For mines with high heat abnormalities caused by deep circulation rising groundwater, the active use or passive prevention and control of geothermal resources has become a new direction for green mines. The key scientific problems to be solved in this project include the study of water-heat migration characteristics in the fracture network of rock mass, among which the heat transfer test research in the seepage process of single-fracture rock samples is the basic work. During the research, the rock samples can be loaded into the clamping parts, the relevant ...

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Problems solved by technology

[0003] In actual work, it is found that the water flow entering the clamping part will be obviously affected by heat transfer, resulting in a great difference between the water temperature at the inlet of the clamping part and the water temperature at the crack inlet of the rock sample. In this case, if simply The water temperature at the inlet of the clamping part to represent the water temperature at the inlet of the crack will have a large error

In addition, in the current research on the heat transfer problem in the seepage process of single-crack rock samples, the internal temperature of the rock sample is basically regarded as a black box, that is, the water temperature along the crack and the surface rock temperature inside the crack are not studied. , and the measurement of the gap width b of the crack also has a large error

In summary, due to the inconsistency of the test variables and the lack of understanding of the internal temperature of the rock, etc., the research on the heat transfer problem in the single-fracture seepage process is insufficient, and it cannot provide sufficient reference value for the actual production.

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