Method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions

A freeze-thaw cycle and acquisition method technology, applied in the field of freeze-thaw rock measurement, can solve the problems of poor accuracy, complex operation and poor reliability in determining unfrozen water content, and achieve the effects of simplifying the test process, cumbersome solution steps, and small errors

Active Publication Date: 2020-02-18
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The invention provides a method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions, which solves the tec

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  • Method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions
  • Method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions
  • Method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions

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Embodiment Construction

[0021] The embodiments of the present application provide a method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions, so as to solve the technical problems of poor accuracy, complicated operation, and poor reliability in determining the unfrozen water content in the prior art.

[0022] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0023] This embodiment provides a method for obtaining unfrozen water ...

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Abstract

The invention belongs to the technical field of thawing rocks, and discloses a method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions, and the method comprises the following steps of preparing rock column samples, and saturating the rock column samples with formation water; performing a nuclear magnetic resonance test on the rock column samples of saturated formation water to obtain a T2 spectrum curve; converting the T2 spectrum curve into a nuclear magnetic pore throat distribution curve f(r); bringing the nuclear magnetic pore throat distribution curve f(r)into an integral formula to respectively obtain the relationship curve between unfrozen water content and temperature during melting and freezing. The method for obtaining the unfrozen water content in rocks under the freeze-thaw cycle conditions provided by the invention can achieve high accuracy and high reliability, and is easy to obtain the unfrozen water content.

Description

technical field [0001] The invention relates to the technical field of freeze-thaw rock measurement, in particular to a method for obtaining unfrozen water content in rock under freeze-thaw cycle conditions. Background technique [0002] The measurement of unfrozen water in rocks is of great significance for engineering construction in freeze-thaw areas. In the prior art, there are many measurement schemes for unfrozen water, but the accuracy is more or less low, the experimental conditions are high, and the test operation is complicated. , poor reliability and other defects. Contents of the invention [0003] The invention provides a method for obtaining unfrozen water content in rocks under freeze-thaw cycle conditions, which solves the technical problems of poor precision, complicated operation and poor reliability in measuring the unfrozen water content in the prior art. [0004] In order to solve the above technical problems, the present invention provides a method f...

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Application Information

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IPC IPC(8): G01N24/08G01N25/56
CPCG01N24/081G01N24/082G01N25/56Y02A90/30
Inventor 谭贤君苏舟舟陈卫忠马伟
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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