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An Evaluation Method for Stability Prediction of Surrounding Rock in Mining Roadway

A technology for stability prediction and mining roadway, which is applied in the fields of stability prediction and evaluation of surrounding rock of mining roadway, and safety prediction and evaluation of surrounding rock of mining roadway, which can solve the problems of difficulty in clustering conclusions and achieve the effect of accurate evaluation results.

Active Publication Date: 2020-07-03
SHANDONG UNIV OF SCI & TECH +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned methods all have different degrees of limitations or inherent deficiencies:
[0012] However, this method has strong subjectivity in determining the index weight and membership degree, and it is difficult to obtain clustering conclusions when the sample size is large

Method used

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  • An Evaluation Method for Stability Prediction of Surrounding Rock in Mining Roadway
  • An Evaluation Method for Stability Prediction of Surrounding Rock in Mining Roadway
  • An Evaluation Method for Stability Prediction of Surrounding Rock in Mining Roadway

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Experimental program
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Embodiment

[0135] The surrounding rock stability grades and influencing factors of 88 groups of mining roadways collected from mining area 042 of Bolin Mine, mining area 032 of Bailaping Mine, mining area 112 of Tieshan South Mine, mining area 411 of Diamond Mine and mining area 421 of Binlang Mine As an example, give an example.

[0136] Such as Figure 1 to Figure 5 As shown, the stability grade of the surrounding rock of the mining roadway includes three grades of stable, moderately stable and unstable, which are represented by 1, 2 and 3 respectively. The corresponding influencing factors include the weighted strength of the surrounding rock of the mining roadway σ, the buried depth of the roadway H, The ratio N of the thickness of the immediate roof to the mining height, the width X of the coal pillar of the roadway protection, the ratio K of the coal seam to the height of the roadway, and the initial caving step of the immediate roof L, see Table 1:

[0137] Table 1: The measured ...

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Abstract

The invention discloses an evaluation method for predicting the stability of the surrounding rock of a mining roadway, which mainly includes inputting the measured data of factors affecting the stability of the surrounding rock of the mining roadway into a computer; model; the selected global kernel function and local kernel function are combined into a mixed kernel function, and a mixed kernel function support vector machine prediction model is established; Optimization and establishment of particle swarm algorithm-mixed kernel function support vector machine prediction model for the stability of surrounding rock in mining roadway; calculation of prediction accuracy and reliability of samples to be predicted and evaluation of model maturity. The invention has the characteristics of simple operation, scientific method, accurate and reliable prediction results of the surrounding rock stability level of the mining roadway and evaluation results of the model maturity, and a high degree of coincidence with the actual situation.

Description

technical field [0001] The invention relates to a method for predicting and evaluating the safety of the surrounding rock of a mining roadway, in particular to a method for predicting and evaluating the stability of the surrounding rock of a mining roadway, which belongs to the technical field of mine safety. Background technique [0002] Underground coal mining roadway is an important channel for coal transportation, mine ventilation, and pedestrian material transportation. Accurate prediction or evaluation of the stability of the surrounding rock of the mining roadway is the premise and basis for the design of the support scheme. It is related to safe production and is of great significance. In recent years, the research on the prediction method of the surrounding rock stability of the mining roadway has become an important scientific research topic in the field of coal mining safety production technology. [0003] In the prior art, there are many methods for predicting th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 刘阳石永奎李文莹石佳慧于宁张良良武继胜徐明伟齐敏华王体衡郝建韩超余海鸥丁永禄高姣娇徐旖旎王晓孟
Owner SHANDONG UNIV OF SCI & TECH
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