Results 61 to 70 of about 22,306,013 (246)

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Fragility curves for hardfill dams under seismic loading / Curvas de fragilidad para presas de hardfill bajo carga sísmica

Tecnología y ciencias del agua, 2020
Hardfill dams are comprised of cemented granular materials gathered directly from the river bed or its surroundings, or which are by-product of the dam excavation.
Grissel Hurtado-López, Juan Manuel Mayoral-Villa   +1 more
doaj   +1 more source

Seismic fragility analysis of reinforced masonry buildings

, 2013
Reinforced masonry walls are a widely used lateral force resisting system for buildings around the world. These structures, if not correctly detailed to resist earthquake loads, are a main cause of casualties and economic losses, particularly in developing countries.
Zamora, José Efraín Mazariegos, author, van de Lindt, John W., advisor, Atadero, Rebecca, committee member, Strong, Kelly, committee member   +3 more
openaire   +1 more source

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method

Shock and Vibration, 2021
Uncertainties of the ground motions and structural parameters are the main factors that limit the accuracy of embankment seismic fragility assessment.
Fa Che, Chao Yin, Jilei Zhou, Zhinan Hu, Xingkui Zhao, Lu Sheng, Qian Zhang, Xiaoyu Cheng, Gangting Tang, Han Zhang, Dong Liu   +10 more
doaj   +1 more source

Development of an open-source platform for calculating losses from earthquakes [PDF]

, 2012
Risk analysis has a critical role in the reduction of casualties and damages due to earthquakes. Recognition of this relation has led to a rapid rise in demand for accurate, reliable and flexible risk assessment numerical tools and software.
Pinho, R., Varum, H., Crowley, H., Silva, V.   +3 more
core  

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

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

Seismic Fragility Analysis of Institutional Building of Pokhara University

Himalayan Journal of Applied Science and Engineering, 2020
Fragility curves are derived from fragility function that indicates the probability of damage of structure due to earthquake as a function of ground motion parameter. It helps to predict the level of structural damage and consequently reduce the seismic risk in specific ground motion.
Hemchandra Chaulagain, Narayan Ghimire
openaire   +2 more sources

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