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优性组合预测模型在北天山隧道涌突水量计算中的应用
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作者 甘靖轩 许模 +3 位作者 李兆龙 凌成鹏 夏强 程帅涛 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第5期592-600,共9页
基于新疆北天山地区精伊霍铁路隧道的平导洞实测涌水量,引入有效度概念和优性组合判定定理计算最优权重系数近似解,构建一种涌突水量的优性组合预测模型.模型优化了现有解析法公式的精度,同时保留了解析法计算的简洁性.对比隧道施工实... 基于新疆北天山地区精伊霍铁路隧道的平导洞实测涌水量,引入有效度概念和优性组合判定定理计算最优权重系数近似解,构建一种涌突水量的优性组合预测模型.模型优化了现有解析法公式的精度,同时保留了解析法计算的简洁性.对比隧道施工实测涌水量数据,结果表明,相较于单一解析法和漂移度组合预测模型,优性组合预测模型提升精度均值4.2%~16.2%,提升有效度6.2%~19.2%,降低了预测的不稳定性,其可靠性得到验证.将模型应用于拟建的G577北天山隧道,结果显示,F_(14)断裂带为全线最高涌突水量段,最大涌突水量为31148 m^(3)/d.优性组合预测模型应用简便且精度较高. 展开更多
关键词 隧道工程 涌突水量 有效度 最优权重系数 组合预测
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Application of SVM in Analyzing the Headstream of Gushing Water in Coal Mine 被引量:5
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作者 YAN Zhi-gang ZHANG Hai-rong DU Pei-jun 《Journal of China University of Mining and Technology》 EI 2006年第4期433-438,共6页
To recognize the presence of the headstream of gushing water in coal mines, the SVM (Support Vector Ma- chine) was proposed to analyze the gushing water based on hydrogeochemical methods. First, the SVM model for head... To recognize the presence of the headstream of gushing water in coal mines, the SVM (Support Vector Ma- chine) was proposed to analyze the gushing water based on hydrogeochemical methods. First, the SVM model for head- stream analysis was trained on the water sample of available headstreams, and then we used this to predict the unknown samples, which were validated in practice by comparing the predicted results with the actual results. The experimental results show that the SVM is a feasible method to differentiate between two headstreams and the H-SVMs (Hierachical SVMs) is a preferable way to deal with the problem of multi-headstreams. Compared with other methods, the SVM is based on a strict mathematical theory with a simple structure and good generalization properties. As well, the support vector W in the decision function can describe the weights of the recognition factors of water samples, which is very important for the analysis of headstreams of gushing water in coal mines. 展开更多
关键词 support vector machine gushing water headstream recogmtlon H-SVMs
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