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Surrounding rock loosening circle measuring method based on radon gas precipitation concentration

A technology of surrounding rock loosening rings and measurement methods, which is applied in the direction of measurement devices, drilling equipment and methods, and analysis materials, etc., can solve the problems of complex data processing, high use cost, cumbersome operation, etc., and achieve simple measurement methods and low cost , a wide range of effects

Active Publication Date: 2021-04-27
CHINA UNIV OF MINING & TECH
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  • Application Information

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Problems solved by technology

[0004] Existing measurement methods for surrounding rock looseness in roadway mainly include drilling peeping method, ultrasonic imaging method, electromagnetic radiation method, geological radar detection method, etc. Dealing with complex and other shortcomings

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  • Surrounding rock loosening circle measuring method based on radon gas precipitation concentration
  • Surrounding rock loosening circle measuring method based on radon gas precipitation concentration
  • Surrounding rock loosening circle measuring method based on radon gas precipitation concentration

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Embodiment Construction

[0032] The specific embodiments of the present invention will be briefly described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those skilled in the art without creative work Examples, all belong to the protection scope of the present invention.

[0033] Figure 1-Figure 5 The preferred embodiment of the present invention is shown, and it is analyzed in detail from different angles.

[0034] The method for measuring the loose circle of surrounding rock based on the concentration of radon gas precipitation disclosed by the invention uses equipment including a test piece radon gas precipitation measurement device and a roadway surrounding rock radon gas precipitation measurement device.

[0035]The test piece radon release measuring device comprises a test piece 9, a ri...

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Abstract

The invention discloses a surrounding rock loosening circle measuring method based on radon gas precipitation concentration, and relates to the technical field of surrounding rock loosening circle monitoring. The surrounding rock loosening circle measuring method comprises the following steps that firstly, the radon gas precipitation concentration when a test piece is damaged by loading is measured in a laboratory, and a radon gas concentration threshold value is calculated; then, radon gas precipitation concentration values of a plurality of measuring points in the roadway are measured on site; and finally, the radon gas precipitation concentration values of the measuring points are compared with the radon gas concentration threshold value to determine a surrounding rock loosening circle. According to the surrounding rock loosening circle measuring method based on the radon gas precipitation concentration, the radon gas precipitation concentration value of the test piece in the damaged process is obtained through an experiment, the radon gas concentration threshold value when the test piece is damaged is determined, the radon gas precipitation concentration value actually measured on site is compared with the threshold value, the development depth of the surrounding rock loosening circle of roadway is determined, the measuring method is simple, practicality is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of monitoring loose circles of surrounding rocks, in particular to a method for measuring loose circles of surrounding rocks based on the concentration of radon gas precipitation. Background technique [0002] Radon is a chemical element, and its common elemental form is radon gas, which is the most radioactive inert gas that humans come into contact with. Radon is colorless, tasteless, and odorless under normal conditions. It is easily soluble in water and organic matter, and its chemical properties are relatively stable. Radon is very active and has good migration ability. In addition to gaseous migration in geological environment, radon can also migrate with groundwater in a dissolved state. Radon gas has the geophysical and chemical properties of an inert gas, can be transported and accumulated in micropores or microcracks, and can generally migrate in overlying strata through diffusion, convection or a...

Claims

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Application Information

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IPC IPC(8): E21F17/00E21B7/04E21B49/08E21B33/126G01N19/00G01N33/24
CPCE21B7/046E21B33/1208E21B33/126E21B49/087E21F17/00G01N19/00G01N33/24
Inventor 张炜王天一郭佳炜张琰岽宋坤朱济博王锦明
Owner CHINA UNIV OF MINING & TECH
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