Results 21 to 30 of about 18,259 (229)

Quantum model for supercontinuum generation process

open access: yesScientific Reports, 2022
A quantum theory is established for the propagation of electromagnetic waves in highly nonlinear dispersive optical fibers. By applying the method recently presented dispersion terms and retarded response of the medium are included for the propagation of
A. Safaei Bezgabadi, M. A. Bolorizadeh
doaj   +1 more source

Prediction of surface displacement caused by shield construction in soil-rock composite strata

open access: yesYantu gongcheng xuebao, 2023
When the shield tunnel passes through the soil-rock composite strata, it is easy to cause surface subsidence. In order to explore its law, the convergence mode of shield excavation face in a composite stratum is analyzed. The influences of layered strata
QI Yongjie 1, 3, ZHU Jiancai 2, 4, ZHOU Jian 1, 3, ZHOU Sijian 1, 3, LI Dongtai 5, WEI Gang 6, 7, 8
doaj   +1 more source

Measurement and Analysis of Settlement Induced by Rectangular Pipe Jacking in Silt Stratum

open access: yesAdvances in Materials Science and Engineering, 2021
The large-scale rectangular pipe jacking technology has attracted more and more attention in the construction of urban underground pipe galleries, especially the problem of prediction and control of the surface settlement. Taking the pipe gallery project
Jun Tang, Shengcai Li, Yongfu Zhu
doaj   +1 more source

Prediction model and application of three-dimensional ground surface settlement induced by tunnel excavation considering time effect

open access: yes矿业科学学报, 2019
It is difficult to consider the change of settlement along with time by using stochastic medium theory in the settlement prediction process in subway construction. A new settlement-time model is proposed.
Liu Bo, Yang Weihong
doaj   +1 more source

The encoding of stochastic regularities is facilitated by action-effect predictions

open access: yesScientific Reports, 2021
Our brains continuously build and update predictive models of the world, sources of prediction being drawn for example from sensory regularities and/or our own actions.
Betina Korka   +2 more
doaj   +1 more source

Stochastic Strike-Slip Fault as Earthquake Source Model

open access: yesMathematics, 2023
It is known that the source of a tectonic earthquake in the framework of the theory of elasticity and viscoelasticity is considered to be displacement along a certain fault surface.
Maksim Gapeev   +2 more
doaj   +1 more source

2-D And 3-D Analysis of Stochastic, Elastic Soil Medium

open access: yesEngineering Transactions, 2015
The paper presents a stochastic description of a three-dimensional soil medium and its modelling under plane strain conditions. The main aim of the paper is to work out a computational model enabling incorporation of three-dimensional variability of soil
J. Przewłócki, J. Górski
doaj   +1 more source

Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction

open access: yesApplied Sciences
The prediction of ground deformation during ultra-shallow-buried pilot tunnel construction is critical for urban rail transit projects in complex geological settings, yet existing cross-section models often lack accuracy.
Caijun Liu   +5 more
doaj   +1 more source

Ground movements modeling applying adjusted influence function

open access: yesInternational Journal of Mining Science and Technology, 2020
Mathematical modeling of surface deformations caused by underground mining operation is commonly carried out with use of empirical, numerical or stochastic models.
Agnieszka Malinowska   +2 more
doaj   +1 more source

Prediction method for ground surface settlement induced by bias tunnel based on stochastic medium theory

open access: yesYantu gongcheng xuebao
The disturbance of the surrounding soil by tunnel excavation will inevitably lead to surface settlement. When calculating the surface settlement caused by tunnel excavation, various prediction methods have assumed that the tunnel convergence mode is ...
ZHOU Pengyuan 1, 2, SONG Zhanping 1, 2, 3, WANG Junbao 1, 2, ZHANG Yuwei 1, 2, 3, TIAN Xiaoxu 1, 2
doaj   +1 more source

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