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为研究煤巷围岩的稳定性,选取顶板围岩完整性、顶板围岩强度、煤体强度、弱岩层厚度和埋藏深度5个影响因素,采用正态云理论和德尔菲法建立了围岩稳定性评价的正态云模型,并应用于工程实际。结果表明,基于正态云模型的煤巷围岩稳定性分类判别结果符合实际,并优于BP神经网络法的判别结果。
In order to study the stability of the surrounding rock in coal roadway, five influencing factors of the integrity of the surrounding rock of the roof, the surrounding rock strength of the roof, the strength of the coal seam, the thickness of the weak rock and the burial depth are selected. The normal rock theory and the Delphi method are used to establish the surrounding rock Stability assessment of the normal cloud model, and applied to engineering practice. The results show that the classification results of surrounding rock stability based on the normal cloud model are in accordance with the actual results and are superior to the discriminant results of BP neural network.