Results 111 to 120 of about 42,703 (308)

A revaluation of the seismicity in the Antarctic [PDF]

, 2000
P(論文)The Antarctic Peninsula region and some volcanic regions in the Antarctic plate are regions of which the tectonic evolution has been well studied Occurences of tectonic and volcanic earthquakes in the region have been discussed from the point of ...
Kaminuma, Katsutada
core   +1 more source

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

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

Numerical and theoretical study of load transfer behavior during cascading pillar failure

Journal of Rock Mechanics and Geotechnical Engineering
To further study the load transfer mechanism of roof–multi-pillar–floor system during cascading pillar failure (CPF), numerical simulation and theoretical analysis were carried out to study the three CPF modes according to the previous experimental study
Hangyu Dong, Wancheng Zhu, Leilei Niu, Chen Hou, Xige Liu   +4 more
doaj   +1 more source

Self-induced seismicity due to fluid circulation along faults

, 2014
International audienceIn this article, we develop a system of equations describing fluid migration, fault rheology, fault thickness evolution and shear rupture during a seismic cycle, triggered either by tectonic loading or by fluid injection.
Schmittbuhl, Jean, Rachez, Xavier, Poisson, Blanche, Aochi, Hideo, Toussaint, Renaud   +4 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

Analysis of the dynamic behaviour of the hangingwall beam during a seismic event [PDF]

, 1992
Bibliography: leaves 68-72.In a deep-level gold mine planes of weakness oriented parallel to the reef allow the hangingwall to separate from adjacent rock strata. The hangingwall then acts as a separate beam supporting only its selfweight. Mining-induced
Daehnke, A
core   +1 more source

Risk assessment of open pit slope in cold regions based on Bayesian network

Geomatics, Natural Hazards & Risk
Many large open pits are operated in cold regions, where the effect of freeze-thaw action may increase landslide risk. To improve the accuracy of risk assessment for the open pit slope in cold regions, this paper proposes a risk assessment method of rock
Hui Li, Xiaofei Han, Wancheng Zhu, Xige Liu, Leilei Niu   +4 more
doaj   +1 more source

Theme IV – Understanding Seismicity Catalogs and Their Problems Catalog artifacts and quality control

, 2010
Man-made contaminations and heterogeneity of reporting are present in all earthquake catalogs. Often they are quite strong and introduce errors in statistical analyses of the seismicity.
S. Wiemer, L. Gulia, M. Wyss
core   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source