Results 21 to 30 of about 1,591 (253)

Controlled shaped-charge blasting technology for deep underground tunnel engineering

Građevinar, 2023
With the rapid development of the economy and society, the demand for mineral resources and energy has increased rapidly. However, it is difficult to improve the efficiency of blasting construction and control the stability of the surrounding rock in ...
Junlin Lv, Binbin Zheng, Zhen Liu, Junhong Huang   +3 more
doaj   +1 more source

Numerical Simulation of Dynamic Damage and Stability of a Bedding Rock Slope under Blasting Load

Shock and Vibration, 2019
Blasting excavation of a bedding rock slope is a common problem in highway construction in mountainous areas. Accurate simulation of damage area caused by blasting excavation is of great significance for the subsequent maintenance of slopes.
Yekai Chen, Junhao Xu, Xiaohui Huo, Jinchang Wang   +3 more
doaj   +1 more source

Study of Two-Step Parallel Cutting Technology for Deep-Hole Blasting in Shaft Excavation

Shock and Vibration, 2021
In hard rock deep-hole blasting excavation, blastholes are rarely utilized due to the clamping effect of the lower rock, which affects excavation progress and restricts the development and application of deep-hole blasting technology.
Renshu Yang, Changda Zheng, Liyun Yang, Jinjing Zuo, Tonglei Cheng, Chenxi Ding, Qing Li   +6 more
doaj   +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

Dynamic Response Characteristic of Building Structure under Blasting Vibration of underneath Tunnel

Shock and Vibration, 2022
The vibration induced by blasting excavation of the subway tunnel in complex urban environments may cause harmful effects on adjacent buildings. Investigating the dynamic response of adjacent buildings is a key issue to predict and control blasting ...
Ru He, Nan Jiang, Dong-Wei Li, Jian-Feng Qi   +3 more
doaj   +1 more source

EXCAVATION OF THE FOUNDATION OF PIERS S1L AND S1R OF THE VRANDUK I BRIDGE BY CONTROLLED BLASTING ON THE MOTORWAY ROUTE: ZENICA MUNICIPALITY NORTHERN ADMINISTRATIVE BOUNDARY - ZENICA NORTH

e-Zbornik. Elektronički Zbornik Radova Građevinskog Fakulteta, 2023
The Vranduk I bridge is located on the motorway route, on the part of the subsection: Zenica Municipality Northern Administrative Boundary - Zenica North.
Ekrem Bektašević, Reuf Kadrić, Marin Nikolić, Kemal Gutić, Sead Kadrić   +4 more
doaj   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

CONCEPTUAL DEVELOPMENT OF THE TRANSITION FROM DRILL AND BLAST EXCAVATION TO NON-BLASTING METHODS FOR THE PREPARATION OF MINED ROCK IN SURFACE MINING

Rudarsko-geološko-naftni Zbornik, 2019
This article is devoted to the conceptual development of the transition from drill and blast excavation to a non-blasting method for the preparation of hard rock before excavation at construction material deposits.
Boris Sobko, Oleksii Lozhnikov, Volodymyr Levytskyi, Galyna Skyba   +3 more
doaj   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source