基于熵权物元可拓模型的隧道瓦斯等级评价

为准确预测穿越煤层的隧道瓦斯等级,以有助于降低隧道施工过程中瓦斯事故的风险。通过分析国内外大量瓦斯隧道工程案例,选取地层岩性、地质构造、煤层厚度、隧道埋深、水文地质条件等5个分级指标作为隧道瓦斯等级评价指标,将熵权法引入可拓学理论中,建立熵权物元可拓模型,并应用该模型对10条穿越煤层的隧道进行瓦斯等级评价。结果表明:应用该模型得到的隧道瓦斯等级与其实际等级完全吻合,准确率达到100%。

Evaluation of Tunnel Gas Level Based on Entropy-weight and Matter-element Model

This work was done in order that the gas level of tunnel passing through coal seam can be predicted accurately and the risk of gas accident in the tunnel construction process can be reduced.The rock characters,geological structure,thickness of coal seam,tunnel buried depth,hydrogeology conditions were selected as the evaluation indexes of tunnel gas level after analyzing a lot of gas tunnel projects at home and abroad.An entropy-weight and matter-element model was established by introducing the entropy weight method into theory of extenics.Ten tunnels passing through coal seam were evaluated using the entropy-weight and matter-element model.The results show that the evaluations were completely consistent with actual levels and its misjudgment rate was zero.