Results 91 to 100 of about 2,068 (300)

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

Microstructure induced nonlinearity of unconsolidated rocks as related to seismic diagnostic problems [PDF]

Nonlinear Processes in Geophysics, 1997
Manifestations of the so-called structure induced nonlinearity are considered for the case of a granular medium, the latter being a generally accepted model of nonconsolidated rocks in seismics.
I. Yu. Belyaeva, L. A. Ostrovsky, V. Yu. Zaitsev   +2 more
doaj  

Kinematic 3D Retro-Deformation of Fault Blocks Picked from 3D Seismics [PDF]

, 2006
Movement on fault planes causes a large amount of smaller-scale deformation, ductile or brittle, in the area surrounding the fault. Much of this deformation is below the resolution of reflection seismics (i.e. sub-seismic,
Trappe, Henning, Tanner, David, Endres, Heike, Vollbrecht, Axel, Philipp, Sonja, Gudmundsson, Agust, Krawczyk, Charlotte M., Lohr, Tina, Kukla, Peter A., Tanner, David C., Samiee, Ramin, Leiss, Bernd, Oncken, Onno   +12 more
core   +1 more source

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

The refined Moho depth map in the Carpathian-Pannonian region

Contributions to Geophysics and Geodesy, 2018
We present a new digital Moho depth map of the Carpathian-Pannonian region. The map was produced by compiling Moho discontinuity depth data, which were obtained by interpretation of seismic measurements taking into account the results of 2-D and 3-D ...
Miroslav BIELIK, Irina MAKARENKO, Kristián CSICSAY, Olga LEGOSTAEVA, Vitaly STAROSTENKO, Aleksandra SAVCHENKO, Barbora ŠIMONOVÁ, Jana DÉREROVÁ, Lucia FOJTÍKOVÁ, Roman PAŠTEKA, Jozef VOZÁR   +10 more
doaj   +1 more source

Multi-Disciplinary Monitoring Networks for Mesoscale Underground Experiments: Advances in the Bedretto Reservoir Project. [PDF]

Sensors (Basel), 2023
Plenkers K, Reinicke A, Obermann A, Gholizadeh Doonechaly N, Krietsch H, Fechner T, Hertrich M, Kontar K, Maurer H, Philipp J, Rinderknecht B, Volksdorf M, Giardini D, Wiemer S.   +13 more
europepmc   +1 more source

Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]

, 2005
Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Andrew Curtis, Curtis, A.; id_orcid, Trampert, J., van Vossen, R., Robbert van Vossen, Jeannot Trampert   +5 more
core   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Structure and nature of the Palaeozoic basement based on magnetic, gravimetric and seismic investigations in the central Upper Rhinegraben

Geothermal Energy, 2018
New and old magnetic and gravimetric data acquired in the frame of a geothermal project have been processed in N. Vosges and the adjacent Rhinegraben in order to identify the nature and tectonic framework of the graben basement and to select areas with a
J. B. Edel, V. Maurer, E. Dalmais, A. Genter, A. Richard, O. Letourneau, R. Hehn   +6 more
doaj   +1 more source

Dynamic prediction of coal and gas outburst risk based on quantitative analysis of stress–energy evolution and adaptive correction

Deep Underground Science and Engineering, EarlyView.
This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao, Xueqiu He, Dazhao Song, Liming Qiu, Minggong Guo, Jie Liu, Qiang Liu, Yi Zhu   +7 more
wiley   +1 more source