Results 71 to 80 of about 36,404 (317)

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

SEISMIC RISK ASSESSMENT IN THE ATTICA BASIN

Bulletin of the Geological Society of Greece, 2017
This paper aims to determine the exposure-based earthquake risk posed in the Attica Basin, Greece using a GIS based methodology. The hazard level is based on grouped geological formations according to the New Ground Anti-Earthquake Regulation of Greece and the structural setting of the area. Vulnerability is calculated using two different methodologies.
Farangitakis, G.P., Brentas, O.G., Andreadakis, E., Lekkas, E.   +3 more
openaire   +5 more sources

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Fragility curves production for steel structures by seismic improvement of the high-dimensional model representation method [PDF]

مهندسی عمران شریف
Fragility curves are utilized to evaluate the probability of exceeding the damage index for structures exposed to seismic hazards. The Monte Carlo simulation method, which involves generating random numbers, is computationally expensive for calculating ...
P. Asadi, H. Abbasi
doaj   +1 more source

Assessing infrequent large earthquakes using geomorphology and geodesy in the Malawi Rift [PDF]

, 2015
In regions with large, mature fault systems, a characteristic earthquake model may be more appropriate for modelling earthquake occurrence than extrapolating from a short history of small, instrumentally observed earthquakes using the Gutenberg–Richter ...
Biggs, Juliet, Katsuichiro Goda, Hodge, Michael, Goda, Katsuichiro, Aspinall, Willy, Willy Aspinall, Juliet Biggs, Goda, Katsu, Michael Hodge, Aspinall, Willy P   +9 more
core   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

STRUCTURAL PERFORMANCE ASSESSMENT OF EXISTING BRIDGES IN SEISMIC PRONE AREAS

, 2011
For the issue of planning construction areas in order of the prevention and mitigation of seismic risk, in addition to emergency management, the scientific community has for decades studies the identification of tools and methodologies for seismic ...
Mancini, Mariella
core  

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Damage Inspection and Seismic Assessment of Lingzhao Xuan in the Palace Museum: A Case Study

Buildings
Lingzhao Xuan, located in the Palace Museum, has significant historical, artistic and scientific values. To investigate the safety status and seismic performance of the Lingzhao Xuan structure, the material composition and performance of the main load ...
Xuanming Huang, Ruwei Wang, Xiaogu Zhang, Guanghua Huang, Dongyu Teng, Xinjiang Zhang   +5 more
doaj   +1 more source

CNCRP Manual Based Seismic Evaluation and Retrofitting of Existing RC Buildings: A Case Study [PDF]

Journal of Rehabilitation in Civil Engineering
Recent seismic incidents in Turkey have raised concerns among engineers about the potential performance of existing buildings in earthquakes. Due to its location in a somewhat active seismic region, Bangladesh is susceptible to experiencing catastrophic ...
Debasish Sen, Md. Kamruddoja Shihab, Md. Farhad Momin   +2 more
doaj   +1 more source