Bibliometric analysis of research challenges and trends in urban underground space
张友，郑亮，何灵玲，焦玉勇， 张友，郑亮，何灵玲，焦玉勇，彭汉发，Ranjith P. Gamage
发布时间：2024-04-16
Prediction of rock mass classification in tunnel boring machine tunneling using the principal component analysis (PCA)–gated recurrent unit (GRU) neural network
Ke Man, Liwen Wu, Xiaoli Liu, Zhifei Song, Kena Li, Nawnit Kumar
发布时间：2024-04-12
关键词：Prediction of rock mass classification in tunnel boring machine tunneling using the principal component analysis PCAgated recurrent unit GRU neural network
摘要：AbstractDue to the complexity of underground engineering geology, the tunnel boring machine (TBM) usually shows poor adaptability to the surrounding rock mass, leading to machine jamming and geological hazards. For the TBM project of Lanzhou Water Source Construction, this study proposed a neural network called PCA–GRU, which combines principal component analysis (PCA) with gated recurrent uni...
阅读全文 PDF 引用Evolution law of pulsating seepage and thermal deformation by injecting high-temperature steam into coal for thermal coalbed methane recovery
Zhiqiang Li, Junliang Li, Jinsheng Chen, Ali Karrech, Ningchao Zhang, Ju Chang, Kaiqi Jin, Yangyang
发布时间：2024-04-12
关键词：Evolution law of pulsating seepage and thermal deformation by injecting hightemperature steam into coal for coalbed methane recovery
摘要：AbstractChinese coal reservoirs are characterized by low pressure and low permeability, which need to be enhanced so as to increase production. However, conventional methods for permeability enhancement can only increase the permeability in fractures, but not the ultra-low permeability in coal matrices. Attempts to enhance such impermeable structures lead to rapid attenuation of gas production,...
阅读全文 PDF 引用ALSTNet: Autoencoder fused long- and short-term time-series network for the prediction of tunnel structure
Bowen Du, Haohan Liang, Yuhang Wang, Junchen Ye, Xuyan Tan, Weizhong Chen
发布时间：2024-04-12
关键词：ALSTNet Autoencoder fused long and shortterm timeseries network for the prediction of tunnel structure
摘要：AbstractIt is crucial to predict future mechanical behaviors for the prevention of structural disasters. Especially for underground construction, the structural mechanical behaviors are affected by multiple internal and external factors due to the complex conditions. Given that the existing models fail to take into account all the factors and accurate prediction of the multiple time series simu...
阅读全文 PDF 引用Development status and research recommendations for thermal extraction technology in deep hot dry rock reservoirs
Diquan Li, Ning Li, Jing Jia, Hongguang Yu, Qinghu Fan, Lichang Wang, Ahmed Mohsen
发布时间：2024-03-19
关键词：enhanced geothermal system, hot dry rock reservoir, thermoelastic stress, thermo‐hydro‐mechanicalcoupling
摘要：this article delves into a detailed discussion on the influence of fracture spacing, fracture permeability, fracture length, fluid injection rate, and injected fluid temperature on the performance of the EGS. In light of the thermo-hydro-mechanical coupling challenges associated with high-temperature reservoirs, it is suggested that future research efforts should focus on investigating the impact of thermo-induced stresses on the stability of the artificial fracture network within the EGS during long-term (>30 years) circulation of hot and cold fluids.
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