Results 81 to 90 of about 2,666,045 (295)

Study on the Girder Falling Mechanism of Gao-yuan Bridge Based on the Geomechanical Model Testing

工程科学与技术, 2015
:Abstract: Transport system has been severely destroyed during the 2008 Wenchuan Earthquake, and a great lot of bridges, especially those near the faultage, suffered severe damage and even collapsed, which led to inefficient rescue or reconstruction ...
Wangyanpeng, Li Bixiong
doaj  

Representative value of cross-fault in the northeastern margin of the Qinghai-Tibet block and case analysis of the 2016 Menyuan Ms6.4 earthquake

Geodesy and Geodynamics, 2016
The equation for determining cross-fault representative value is calculated based on hanging wall and foot wall reference level surfaces. The cross-fault data reliability are analyzed base on the stability of reference datum and observation points ...
Ruisha Li, Xi Zhang, Shouwen Gong, Hongtao Tang, Peng Jia   +4 more
doaj   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Numerical analysis of site deformation and formation stress characteristics of Jingyang–Weinan active fault zone

Shuiwen dizhi gongcheng dizhi
The Jingyang–Weinan Fault that Xi’an Metro Line 10 crosses is a Holocene active fault, and its future stick-slip earthquakes and coseismic dislocations pose a potential threat to the metro line.
Chuoyu CHEN, Qiangbing HUANG, Qingyu XIE, Lun LI   +3 more
doaj   +1 more source

Co- and post-seismic vertical displacements of Wenchuan Ms8.0 earthquake near Beichuan

Geodesy and Geodynamics, 2011
Co- and post-seismic vertical displacements of the Wenchuan earthquake derived from two measurements in 2008 and 2010 along two partly-damaged leveling lines near the epicenter show the following features: Co-seismic displacement at Beichuan-Yingxiu ...
Dong Yunhong, Luo Sanming, Han Yueping, Chen Changyun   +3 more
doaj   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Rupture Dynamics and Near-Fault Ground Motion of the Mw7.8 Kahramanmaraş, Turkey earthquake of February 6, 2023

Seismica
We studied the dynamic rupture propagation of the February 6th, 2023 (Mw7.8, 01:17 UTC) Pazarcık (Kahramanmaraş), Turkey, earthquake by incorporating the non-planar fault structure, the regional stress field, and a data-driven friction parameterization ...
Hideo Aochi, Victor Manuel Cruz-Atienza
doaj   +1 more source

Response analysis of hollow core slab bridge with different column heights to near-fault seismic motions. [PDF]

JES: Journal of Engineering Sciences
The near-fault earthquake motions are characterized by influential velocity impulses, and remarkable permanent displacement. Such unique characteristics can substantially change the induced seismic responses of structures.
Sayed Mahmoud, Ahmed Soliman, ‪magdy GENIDI, Waleed Abdallah   +3 more
doaj   +1 more source

Effects of healing on the seismogenic potential of carbonate fault rocks: Experiments on samples from the Longmenshan Fault, Sichuan, China [PDF]

, 2015
Fault slip and healing history may crucially affect the fault seismogenic potential in the earthquake nucleation regime. Here we report direct shear friction tests on simulated gouges derived from a carbonate fault breccia, and from a clay/carbonate ...
Christopher J. Spiers, Chen, Jianye, ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, Spiers, Christopher J., Verberne, Berend A., Berend A. Verberne, CSC: Wenchuan Earthquake: "high angle, thrust earthquake"- requiring high pore pressure, Experimental rock deformation, Jianye Chen   +8 more
core   +2 more sources