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A kind of rock mass quality evaluation method

A technology for rock mass quality evaluation and rock mass quality, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as fuzzy evaluation, poor handling of expert experience judgment, etc.

Active Publication Date: 2018-02-09
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods also have this defect, such as pure quantitative and qualitative evaluation, unable to solve fuzzy evaluation, poor handling of expert experience evaluation, etc.

Method used

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  • A kind of rock mass quality evaluation method
  • A kind of rock mass quality evaluation method
  • A kind of rock mass quality evaluation method

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Experimental program
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Embodiment Construction

[0021] 1 Open-pit mine rock mass quality evaluation system

[0022] According to the engineering geological prospecting specification and related data, the rock compressive strength Rc, cohesion C, and internal friction angle are selected. And the rock mass deformation modulus E constitutes an index system to evaluate the quality of rock samples. The quality classification of open-pit rock mass is divided into five types of quantitative standards, such as figure 1 As shown, the grading standards after normalization are shown in Table 1. Such as figure 2 As shown, it is a calculation principle diagram of Embodiment 1 of the present invention, including steps:

[0023] Table 1 Rock mass quality classification standard in open pit mine

[0024]

[0025] Note: The higher the series, the better the quality of the rock mass.

[0026] 2. Grading method of TFN-subordination degree softening

[0027] The method of combining triangular fuzzy number and membership degree softe...

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Abstract

The invention discloses a rock mass quality evaluation method. In order to understand the rock mass quality of an open-pit mine, a certain range is determined by sampling from four characteristic positions of surrounding rock, ore body roof, ore body and ore body floor in a certain vertical range of the open-pit mine. The quality of the open-pit mine, rock compressive strength, cohesion, internal friction angle and rock mass deformation modulus are used as the evaluation index system, and five levels of single-factor index rock mass classification are formed to determine the open-pit within a certain vertical range. The rock mass samples at the four characteristic positions of the mine are subject to the five levels of rock mass classification, and softened to determine the rock mass quality of the sample, thereby determining the rock mass quality of the entire slope. The invention can be used to determine the quality of rock samples at four characteristic positions of an open-pit mine within a certain range, thereby determining the quality of the entire slope rock mass.

Description

technical field [0001] The invention relates to mining engineering, in particular to determining the quality of rock samples at four characteristic positions of an open-pit mine within a certain range, thereby determining the quality of the entire slope rock mass. Background technique [0002] Open-pit mining is one of the important methods of coal mine production. The largest Haizhou open-pit mine in Asia is as deep as 320m. The strata before mining are in a state of stress balance, and during the long process of geological structural evolution, deterioration processes such as fractures, joints, and fissures will be formed, which will break the originally completed rock mass. During the mining process, a rock mass with five sides restricted and one side free is generally formed. The rock body is destroyed due to the loss of restraint and the release of elastic potential energy, even rockburst. Therefore, it is necessary to keep abreast of the changes in slope lithology an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 邵军张志杰吴作启刘文生杨逾张媛杜东宁崔铁军
Owner LIAONING TECHNICAL UNIVERSITY
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