Stability Evaluation of the Goaf Based on Combination Weighting and Cloud Model

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-29 DOI:10.1155/2024/3884586

Linning Guo, Kepeng Hou, Huafen Sun, Yong Yang

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引用次数: 0

Abstract

Goaf has become one of the most significant sources of hazard affecting the safety of metal and nonmetal mines. Evaluation of goaf stability is of paramount importance for mine safety production. First, 13 indices such as rock mass structure, geological structure, and goaf volume are selected based on engineering experience and literature review to assess the stability of goaf. These indices are classified according to the characteristics of each factor, and a stability evaluation system for underground mine goaf is constructed. Second, the analytic hierarchy process method based on group decision theory is utilized to calculate the subjective weight of each index. Additionally, the CRITIC method is used to calculate the objective weight of each index. Finally, game theory is used to combine the subjective and objective weights, thereby improving the accuracy of the index weight. The stability grade of the goaf is calculated using the normal cloud model. The FLAC3D numerical simulation is used to analyze the stability of the goaf and verify the accuracy of the model. The abovementioned model is utilized for assessing the stability of the goaf in the Duimenshan mine section. The results indicate that 90% of the goaf area is in a stable or relatively stable condition, while the remaining 10% is unstable. The evaluation outcomes were compared with FLAC3D numerical simulations, highlighting a scientific and reliable method with an accuracy rate of 90%.

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基于组合加权和云模型的 Goaf 稳定性评估

煤层已成为影响金属和非金属矿山安全的最重要危险源之一。羊群稳定性评价对矿山安全生产至关重要。首先，根据工程经验和文献综述，选取了岩体结构、地质结构、煤层体积等 13 个指标来评估煤层的稳定性。根据各因素的特点对这些指标进行分类，构建了地下矿山巷道稳定性评价体系。其次，利用基于群体决策理论的层次分析法计算各指标的主观权重。此外，利用 CRITIC 方法计算各指标的客观权重。最后，利用博弈论将主观权重和客观权重结合起来，从而提高指标权重的准确性。采用正态云模型计算鹅卵石的稳定性等级。利用 FLAC3D 数值模拟分析羊群的稳定性，验证模型的准确性。利用上述模型对端门山矿段的羊群稳定性进行了评估。结果表明，90% 的煤层面积处于稳定或相对稳定状态，其余 10%的煤层面积处于不稳定状态。评估结果与 FLAC3D 数值模拟结果进行了比较，结果表明该方法科学可靠，准确率达 90%。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.