研究生: |
楊立廷 Mlamuli Bafanatoti Manyatsi |
---|---|
論文名稱: |
Investigating the Applicability of Underground Excavation Indices to the Prediction of Tunneling-Induced Surface Settlement Using Artificial Intelligence Investigating the Applicability of Underground Excavation Indices to the Prediction of Tunneling-Induced Surface Settlement Using Artificial Intelligence |
指導教授: |
陳堯中
Yao-Chung Chen |
口試委員: |
陳立憲
Li-Hsien Chen 呂守陞 Sou-Sen Leu 徐國偉 Guo-Wei Xu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 英文 |
論文頁數: | 168 |
中文關鍵詞: | Tunneling 、Indices 、Artificial Intelligence 、Settlement |
外文關鍵詞: | Tunneling, Indices, Artificial Intelligence, Settlement |
相關次數: | 點閱:167 下載:0 |
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The issue of settlement poses a big threat to underground excavation, especially in urban areas where the smallest of ground movements has the potential to lead to a catastrophic disaster. It is therefore crucial to understand the factors that play a role in causing surface settlement during the excavation process. Numerous approaches including empirical, numerical and analytical have already been established to map the relationships that exist between tunneling and ground deformation. It has also been established in previous studies that surface settlement is not caused by one factor or the other but is more of a combination of factors. Artificial Intelligence methods (AI) have the ability to relate several parameters to surface settlement quickly and efficiently given the proper skills and understanding. In this study, dimensional analysis is used to normalize the factors that affect surface settlement and then the influence of these normalized excavation factors on the prediction of surface settlement is investigated using AI. Three sets of analyses are run on RapidMiner Studio v9.2 using four different algorithms, decision trees, artificial neural networks, random forests and support vector machines. The first set of analyses were done with no indices, the second included the thrust index (Th/(D^2 q_u )) and the last set included the depth index (H/D). The results of the predictions are then compared to the field measurements to see if including these indices in the analysis benefits the prediction or not. The study shows that the thrust index does in fact improve the prediction accuracy while the influence of the depth index in inconclusive.
The issue of settlement poses a big threat to underground excavation, especially in urban areas where the smallest of ground movements has the potential to lead to a catastrophic disaster. It is therefore crucial to understand the factors that play a role in causing surface settlement during the excavation process. Numerous approaches including empirical, numerical and analytical have already been established to map the relationships that exist between tunneling and ground deformation. It has also been established in previous studies that surface settlement is not caused by one factor or the other but is more of a combination of factors. Artificial Intelligence methods (AI) have the ability to relate several parameters to surface settlement quickly and efficiently given the proper skills and understanding. In this study, dimensional analysis is used to normalize the factors that affect surface settlement and then the influence of these normalized excavation factors on the prediction of surface settlement is investigated using AI. Three sets of analyses are run on RapidMiner Studio v9.2 using four different algorithms, decision trees, artificial neural networks, random forests and support vector machines. The first set of analyses were done with no indices, the second included the thrust index (Th/(D^2 q_u )) and the last set included the depth index (H/D). The results of the predictions are then compared to the field measurements to see if including these indices in the analysis benefits the prediction or not. The study shows that the thrust index does in fact improve the prediction accuracy while the influence of the depth index in inconclusive.
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