Zobrazeno 1 - 10
of 1 179
pro vyhledávání: '"EPB"'
Publikováno v:
Underground Space, Vol 18, Iss , Pp 239-255 (2024)
Clogging frequently occurs in the cutter head, excavation chamber or screw conveyor when an earth pressure balance (EPB) shield machine is tunneling in soft or silty clay ground with high clay mineral content. In this paper, montmorillonite, kaolinit
Externí odkaz:
https://doaj.org/article/c73e906ff8ea4f8588ba8693e13276cc
Publikováno v:
International Journal of Geo-Engineering, Vol 15, Iss 1, Pp 1-18 (2024)
Abstract The necessity of predicting geotechnical parameters in soft ground tunnelling is crucial for selecting the appropriate tunnel boring machine (TBM), evaluating the operating limit of earth pressure balance (EPB) machines’ parameters, and en
Externí odkaz:
https://doaj.org/article/f031def8b701414eb349470f5c65e7f1
Publikováno v:
Underground Space, Vol 17, Iss , Pp 170-187 (2024)
Parameters of foam penetration in earth pressure balance (EPB) shield tunnelling, such as permeability coefficients and penetration distances, significantly impact tunnel face stability. However, existing studies have faced inaccuracies in analysing
Externí odkaz:
https://doaj.org/article/8a1ca2b3905e4358b261086fa7f094b5
Publikováno v:
Alexandria Engineering Journal, Vol 96, Iss , Pp 295-302 (2024)
Ground volume loss is an important parameter for settlement control and prediction in shield tunneling. This parameter is usually determined empirically, while its variation along the tunnel is not predictable. In this study, an analytical formula fo
Externí odkaz:
https://doaj.org/article/eb2fb58bab1240d4bee66152c37ad406
Publikováno v:
Underground Space, Vol 15, Iss , Pp 188-202 (2024)
Clogging is a major geohazards risk in mechanized tunnelling through cohesive soils. Clay clogging results from the high adhesion between the clay and metal. Based on the water film theory and Reynolds fluid equation, the interfacial adhesion between
Externí odkaz:
https://doaj.org/article/1216336c59f24717ab64c1708ee88b94
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 2, Pp 532-544 (2024)
Water spewing and muck plugging often occur during earth pressure balance (EPB) shield machines tunnelling in water-rich sandy strata, even though the conventional foam has been employed to condition sandy soils. In this study, a novel thickened foam
Externí odkaz:
https://doaj.org/article/9eb62de824d5468382e73a468b7da8a6
Publikováno v:
Symmetry, Vol 16, Iss 10, p 1339 (2024)
Controlling the ground settlement and building deformation triggered by shield tunnelling, particularly within water-rich strata, poses a significant engineering challenge. This study conducts a finite element (FE) analysis focusing on the ground set
Externí odkaz:
https://doaj.org/article/b344938ec9324d66a88901849e4a2546
Autor:
Hanan Samadi, Jafar Hassanpour
Publikováno v:
Heliyon, Vol 10, Iss 11, Pp e31773- (2024)
The analysis of cutterhead torque and thrust force is of utmost importance in the selection of a proper tunnel boring machine (TBM) and in achieving optimal operation of the earth pressure balance (EPB) machine for a specific project. This study focu
Externí odkaz:
https://doaj.org/article/7d7023f96c5f41faa1a22442ebee9706
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 15, Iss 11, Pp 2857-2867 (2023)
During tunnel boring machine (TBM) excavation, lithology identification is an important issue to understand tunnelling performance and avoid time-consuming excavation. However, site investigation generally lacks ground samples and the information is
Externí odkaz:
https://doaj.org/article/9d314ba82fb4424c9c26ea6cac3a9502
Autor:
Guanyi Ma, Jinghua Li, Jiangtao Fan, Qingtao Wan, Takashi Maruyama, Liang Dong, Yang Gao, Le Zhang, Dong Wang
Publikováno v:
Remote Sensing, Vol 16, Iss 18, p 3521 (2024)
An equatorial plasma bubble (EPB) is characterized by ionospheric irregularities which disturb radio waves by causing phase and amplitude scintillations or even signal loss. It is becoming increasingly important in space weather to assure the reliabi
Externí odkaz:
https://doaj.org/article/c4a36ca5109c4fc0a63465a46d2b1c60