3D-dimensional Effective Stress Analysis of Wetting and Wetting Trapping Process in Wet-submerged Loess Tunnel Surrounding Rock Based on BP Neural Network

Authors

  • Wen Wang College of Geological Engineering and Geomatics Chang'an University, Xi'an 710061, Shaanxi, China

DOI:

https://doi.org/10.4108/ew.3988

Keywords:

wet-submerged loess, humidification-wet-submergence process, BP neural network, three-dimensional effective stress analysis

Abstract

INTRODUCTION: China's loess is vast. Loess has apparent high strength and resistance to deformation once encountered with water immersion and humidification, fusible salts precipitated on the surface of soil particles, the soil's carry alkalization strength is relatively reduced, while the vertical tubular pores in the soil accelerate the infiltration of water, the earth will be in the self-weight or the overlying loads of the additional action of the soil body will produce a significant settlement deformation, which results in the structural damage of the upper building, which is the loss of the wetting of subsidence.

OBJECTIVES: From China's practical point of view, the humidification and wetting process of wetted loess tunnel peripheral rock is deeply discussed and analyzed, and the water content distribution characteristics of wetted loess tunnel peripheral rock are sought.

METHODS: Using the particle swarm algorithm, four neural optimization network models, namely, radial basis neural network (RBFNN), generalized regression neural network (GRNN), wavelet neural network (WNN), and fuzzy neural network (FNN), are simulated and created for the analysis of three-dimensional effective stresses in the process of humidity and wetness subsidence in the surrounding rock of loess tunnels of a northwestern city in China and a central city in China.

RESULTS: By analyzing the comparison graphs between the predicted and actual values of these four models on the test data of two sets of experimental data, the distribution of the proportion of the expected difference to the true value, and the results of the calculation of the three error indexes, it can be found that when using the four neural networks, namely, RBFNN, GRNN, WNN, and FNN, for the analysis of the three-dimensional effective stresses during the process of increasing wetting and wetting of the surrounding rock of the tunnel in the soil-wetted loess, the prediction performance of the WNN is the best.

CONCLUSION: The soil's unsaturated settlement characteristics differ for different water contents and humidification times. The shorter the period, the more the soil column water content difference. With the continuous increase of water content change in the soil layer, the distribution of water content change in the loess soil column tends to be relatively uniform, and the difference in damage rate between the upper and lower layers tends to be reduced—the amount, time, and pressure of humidification controls wet subsidence.

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References

Liu He Yi, Cong Yu, Zhang Li Ming, Zheng Ying Ren, Wang Zai Quan, Abi Erdi, Liu Li Peng Macro and micro failure mechanism of surrounding rock of small span tunnel under different stress paths[J] Journal of Central South University,2022,29(5). DOI: https://doi.org/10.1007/s11771-022-5041-6

Yang Zedong,Xu Jiansheng,Feng Qiang,Liu Weiwei,He Peng,Fu Shenggang. Elastoplastic Analytical Solution for the Stress and Deformation of the Surrounding Rock in Cold Region Tunnels Considering the Influence of the Temperature Field[J] International Journal of Geomechanics,2022,22(8). DOI: https://doi.org/10.1061/(ASCE)GM.1943-5622.0002466

Huang Cunhan, Dong Wenhao, Cao Zhengzheng, Wang Yue, An Gangjian, Chen Huanqi, Jia Yunlong, Pan Qiuyu, Shan-Jie Su Water Inrush Mechanism of Fault Zone in Karst Tunnel under Fluid-Solid Coupling Field considering Effective Stress[J] Geofluids,2022,2022. DOI: https://doi.org/10.1155/2022/4205174

Si Xuefeng, Li Xibing, Gong Fengqiang, Huang Linqi, Liu Xiling Experimental investigation of failure process and characteristics in circular tunnels under different stress states and internal unloading conditions[J] International Journal of Rock Mechanics and Mining Sciences,2022,154. DOI: https://doi.org/10.1016/j.ijrmms.2022.105116

Cheng Xuansheng, Xia Lingyu, Hu Lankai, He Peicun, Yang Xinping Mechanical characteristics of diversion and spillway tunnel under high in-situ stress[J] Arabian Journal of Geosciences,2022,15(9). DOI: https://doi.org/10.1007/s12517-022-10131-4

Yuan Dong,Zhang Lanbin,Liu Xiaoling,Feng Tao,Zhang Guangze,Xu Zhengxuan,Wang Zhewei,Yi Xiaojuan,Lin Zhiheng,Ren Yang,Zhang Ru,Ren Li. Influence of the Xianshuihe Fault Zone on In-Situ Stress Field of a Deep Tunnel and its Engineering Effect[J] Frontiers in Earth Science,2022. DOI: https://doi.org/10.3389/feart.2022.886876

Wang Huaning, Song Fei, Zhao Tao, Jiang Mingjing. Solutions for lined circular tunnels sequentially constructed in rheological rock subjected to non-hydrostatic initial stresses[J] European Journal of Environmental and Civil Engineering,2022,26(5). DOI: https://doi.org/10.1080/19648189.2020.1737576

Zhong Daning, Chen Jianlin, Zhou Hui, Chen Xiangrong, Jiang Yali, Jia Pengjiao. Study on Progressive Failure of Hard Rock Tunnel After Excavation Under High Stress[J] Advances in Civil Engineering,2022,2022. DOI: https://doi.org/10.1155/2022/4755417

Zhou Zihan, Chen Ziquan, He Chuan, Meng Wei, Wu Fangyin, Kou Hao, Yan Jian In Situ Stress Field along the Axis of Deeply Buried Tunnel in Southwest China Employing the Segmented Single-Borehole Inversion Method[J] International Journal of Geomechanics,2022,22(6). DOI: https://doi.org/10.1061/(ASCE)GM.1943-5622.0002377

Bockmann Benjamin, Dankl L, Kucinskaite G, Kumar A, Timothy J J, Meschke G, Venjakob A J, Schulte T L. Bone tunnel placement influences shear stresses at the coracoid process after coracoclavicular ligament reconstruction: a finite element study and radiological analysis.[J] Archives of orthopedic and trauma surgery,2022. DOI: https://doi.org/10.1007/s00402-022-04382-9

Li Hanyuan,Li Xinggao,Yang Yi,Liu Yang,Ma Mingzhe. Structural Stress Characteristics and Joint Deformation of Shield Tunnels Crossing Active Faults[J] Applied Sciences,2022,12(7). DOI: https://doi.org/10.3390/app12073229

Cheng Rongshan,Wang Huizhi,Dimitriou Dimitris,Jiang Ziang,Cheng ChengKung,Tsai TsungYuan. Central Femoral Tunnel Placement Can Reduce Stress and Strain Around Bone Tunnels and Graft More than Anteromedial Femoral Tunnel in Anterior Cruciate Ligament Reconstruction.[J] International journal for numerical methods in biomedical engineering,2022,38(5). DOI: https://doi.org/10.1002/cnm.3590

Rotta Loria Alessandro F., Di Donna Alice, Zhang Manlu. Stresses and deformations induced by geothermal operations of energy tunnels[J] Tunnelling and Underground Space Technology incorporating Trenchless Technology Research,2022,124. DOI: https://doi.org/10.1016/j.tust.2022.104438

Chen Honghao, Ramandi Hamed Lamei, Craig Peter, Crosky Alan, Saydam Serkan Stress corrosion cracking of cable bolts in tunnels: An in-situ testing approach[J] Tunnelling and Underground Space Technology incorporating Trenchless Technology Research,2022,123. DOI: https://doi.org/10.1016/j.tust.2022.104421

Gong Bin, Liang Zhengzhao, Liu Xiangxin Nonlinear deformation and failure characteristics of a horseshoe-shaped tunnel under varying principal stress direction[J] Arabian Journal of Geosciences,2022,15(6). DOI: https://doi.org/10.1007/s12517-022-09678-z

Huang Bo, Du Yihan, Zeng Yu, Cao Bing, Zou Yu, Yu Qian Study on Stress Field Distribution during the Construction of a Group of Tunnels Using the Pile–Beam–Arch Method[J] Buildings,2022,12(3). DOI: https://doi.org/10.3390/buildings12030300

Tang Hao, Ji Xiang, Zhang Hongyi, Li Tianbin, Chen Qian Numerical Simulation of Large Compression Deformation Disaster and Supporting Behavior of Deep Buried Soft Rock Tunnel with High In Situ Stress Based on CDEM[J] Advances in Civil Engineering,2022,2022. DOI: https://doi.org/10.1155/2022/5985165

Ma Ke, Chen LiPing, Fang Qian, Hong XueFei. Machine Learning in Conventional Tunnel Deformation in High In Situ Stress Regions[J] Symmetry,2022,14(3). DOI: https://doi.org/10.3390/sym14030513

Bouaré Hamed,Mesgouez Arnaud,Lefeuve-Mesgouez Gaëlle. Stress and displacement fields around an arbitrary shape tunnel surrounded by a multilayered elastic medium subjected to harmonic waves under plane strain conditions[J] Soil Dynamics and Earthquake Engineering,2022,154. DOI: https://doi.org/10.1016/j.soildyn.2022.107158

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Published

26-09-2023

How to Cite

1.
Wang W. 3D-dimensional Effective Stress Analysis of Wetting and Wetting Trapping Process in Wet-submerged Loess Tunnel Surrounding Rock Based on BP Neural Network. EAI Endorsed Trans Energy Web [Internet]. 2023 Sep. 26 [cited 2024 Jun. 18];10. Available from: https://publications.eai.eu/index.php/ew/article/view/3988