Results 31 to 40 of about 711,778 (240)

Research on Cumulative Damage Characteristics of Rock Anchor Beam Concrete Supporting Structure by Blasting Vibration of Underground Powerhouse

Shock and Vibration, 2021
Aiming at the dynamic disturbance problem of the upper rock anchor beam concrete support structure caused by the blasting excavation of the lower rock mass of the underground powerhouse of the hydropower station, the dynamic finite element software was ...
Sheng Wan, Junhong Huang, Yi Luo, Xinping Li, Qingsong Pu   +4 more
doaj   +1 more source

Influence mechanism of rock joints on blasting fragmentation

Yantu gongcheng xuebao
The influences of rock joints on the formation of blasting fragmentation have always been a hot issue in blasting engineering, which is one of the most important factors affecting the construction efficiency and long-term operation safety.
HU Yingguo 1, 2, RAO Yu 1, 2, CHAI Chaozheng 3, WU Xinxia 1, 2, YANG Zhaowei 1, 2, ZHOU Xianping 1, 2
doaj   +1 more source

Space-time effect of blasting stress wave and blasting gas on rock fracture based on a cavity charge structure

, 2022
There are still varying opinions on the relative spatio-temporal contributions of blasting stress wave and blasting gas in the theoretical study of rock blasting due to the transient nature of the blasting process and the complexity of the blasting ...
Zhu, Xinguang, 朱心广, Xie, Quanmin, Yang, Renshu, Chen, Cheng, Feng, Chun, Ding, Chenxi, 冯春   +7 more
core   +1 more source

Integrating Remote Sensing, Archaeological Survey and Geophysical Prospections for the Enhancement of Roman Doclea, Montenegro

Archaeological Prospection, EarlyView.
ABSTRACT The Roman city of Doclea is a key archaeological site of Montenegro, valued for its impressive remains and its role in the nation's cultural identity within European and the Mediterranean history. Doclea was the second‐largest city in the province of Roman Dalmatia, a municipium created in the first century ad and named after the Illyrian ...
Tatjana Koprivica, Lucia Alberti, Marilena Cozzolino, Bruna Di Palma, Vincenzo Gentile, Pasquale Merola   +5 more
wiley   +1 more source

Estimation of Specific Charge in Open-Pit Mines Based on Geomechanical Conditions, with Special Emphasis on the Angouran Mine [PDF]

Muhandisī-i manābi̒-i ma̒danī
A persistent challenge in initiating blasting operations is estimating the appropriate specific charge. The specific charge represents the quantity of explosive material required to fragment a specific volume of rock under given blasting conditions.
S.M. Hoseini, F. Sereshki, M. Ataei, E. Kalantari Soltanieh   +3 more
doaj   +1 more source

Study on Blasting Characteristics of Soft-Hard Rock Strata Based on Energy Fields and Particle Expansion Loading Algorithm

Geofluids, 2022
Complex geological conditions often make the blasting effect difficult to control. In order to explore the influence of soft-hard rock strata on rock blasting characteristics, based on PFC2D software, combined with particle expansion loading algorithm ...
Jianbin Cui, Liangfu Xie, Yongjun Qin, Xuejun Liu, Wei Qiao, Zeyu Hu, Liming Wu, Liewang Qiu, Ke Huang   +8 more
doaj   +1 more source

Ant Diversity of the Xisha Islands: Community Structure, Exotic Species Colonization, and Ecological Functions in a Tropical Coral Archipelago

Biological Diversity, EarlyView.
The first inventory of ants from the Xisha Islands of the South China Sea was compiled, revealing 21 species: 70% native and 30% exotic. Anthropogenic disturbance primarily drove exotic colonization, whereas island area showed weak positive effects on species richness. Most ants were omnivorous, with key mutualistic and seed‐dispersal roles.
Hua‐Yan Chen, Zhi‐Xuan Liu, Zheng‐Hui Xu, Rui‐Chong Wang, Shi‐Xiao Luo   +4 more
wiley   +1 more source

The Damage Induced by Blasting Excavation and Seepage Characteristics of Deep Rock under High Seepage Pressure

Geofluids, 2023
By taking the blasting excavation of a deeply buried karst tunnel in the North Tianshan Mountains in China as research objects, the damage induced by blasting excavation and seepage characteristics of deep rock under high seepage pressure was ...
Qian Dong, Xin Liu, Hangli Gong, Yi Luo, Xinping Li, Liangjun Wang   +5 more
doaj   +1 more source

Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope

Frontiers in Earth Science, 2021
In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the research background, combined with field survey, field ...
Menglai Wang, Xiaoshaung Li, Xiaoshaung Li, Xiaoshaung Li, Qihang Li, Yunjin Hu, Qiusong Chen, Song Jiang   +7 more
doaj   +1 more source

Self‐Transcendence and Self‐Enhancement Values as Drivers of Eco‐Travel Behavior. Implications for Business Strategies for Eco‐Tourism Sector

Business Strategy and the Environment, EarlyView.
ABSTRACT Ecotourism encourages environmentally friendly travel; however, little is known about the underlying value systems influencing travelers' choices and actions. This study uses a mixed‐method methodology that combines post hoc qualitative analysis with a large‐scale quantitative survey to examine the influence of multiple value dimensions on ...
Yuemeng Ge, Zhi Li, Naman Sreen, Rsha Alghafes, Mai Nguyen   +4 more
wiley   +1 more source