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Method for quantitatively analyzing influence of environmental factors on mechanical properties of coal-series mudstone

A technology of quantitative analysis of environmental factors, applied in the direction of analyzing materials, applying stable tension/pressure to test the strength of materials, measuring devices, etc., can solve the problems that the mechanical properties of mudstone cannot be highly restored, and experimental rock samples cannot be prepared in batches, etc.

Pending Publication Date: 2021-01-19
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD +1
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Problems solved by technology

[0007] In view of this, in order to solve the above-mentioned mudstone rock sample remodeling process, the present invention cannot prepare experimental rock samples in batches, and the mudstone rock samples after batch remodeling cannot highly restore the mechanical properties of on-site carbonaceous mudstone and cannot use homogeneous, highly Restore the mechanical properties of coal-measure mudstone rock samples by artificially reshaping mudstone rock samples to conduct quantitative analysis on the influence of single factors on the deformation and mechanical properties of coal-measure mudstone, and provide a method for quantitative analysis of the influence of environmental factors on the mechanical properties of coal-measure mudstone

Method used

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  • Method for quantitatively analyzing influence of environmental factors on mechanical properties of coal-series mudstone
  • Method for quantitatively analyzing influence of environmental factors on mechanical properties of coal-series mudstone
  • Method for quantitatively analyzing influence of environmental factors on mechanical properties of coal-series mudstone

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Embodiment Construction

[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] Such as figure 1 A method for quantitatively analyzing the influence of environmental factors on the mechanical properties of coal-measure mudstone is shown, including the following steps:

[0039] S1. According to the coal-measure carbonaceous mudstone object that needs to be studied, a group of rock samples are collected at the coal mine site and ground to powder. Measuring method of mechanical properties (GB / T23561.1-2009) ...

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Abstract

The invention belongs to the field of rock mechanics experiments, and relates to a method for quantitatively analyzing the influence of environmental factors on the mechanical properties of coal-series mudstone, coal, calcium bentonite, quartz sand, cement and water are selected as raw materials to prepare a coal-series mudstone sample; remodeled rock samples highly consistent with natural coal series mudstone in expansibility, water absorbability and basic mechanical properties are prepared in batches at low cost, and rock mechanics experiments are convenient to carry out. By controlling single environmental variables (including environmental temperature, environmental water pressure and soaking time), a large batch of homogeneous test pieces with similar field mechanical properties are used for carrying out grouped cross tests, the influence degree of a single factor on the deformation and mechanical properties of the coal-series mudstone is quantitatively analyzed, and a curve and aparameter equation with clear reference values are obtained.

Description

technical field [0001] The invention belongs to the field of rock mechanics experiments, and relates to a method for quantitatively analyzing the influence of environmental factors on the mechanical properties of coal measure mudstone. Background technique [0002] Coal-measure carbonaceous mudstone is a kind of sedimentary rock series associated with coal seams. The lithology changes greatly, and it has the characteristics of softening and swelling when it encounters water. The research shows that: the water content of the rock mass seriously affects the various mechanical parameters of the rock, and the effect of water on the rock mass has a time effect. When the water content of the rock continues to increase, the decline in the compressive strength of the rock increases significantly, the rock begins to crack and expand, and the strain softening phenomenon decreases sharply. The higher the temperature, the weaker the maximum stress and strain of the mudstone; the elasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/44G01N1/30G01N3/02G01N3/08
CPCG01N1/28G01N1/286G01N1/30G01N1/44G01N3/02G01N3/08G01N2001/2866G01N2203/0003G01N2203/0019G01N2203/0075
Inventor 孙中光王璇孙维赵庆川戴书球谭一川彭迈张建鑫韩麟之梁帅周琪森
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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