Results 181 to 190 of about 16,917 (307)

Extreme wave events in the central Mediterranean:geomorphic evidence of tsunami on the Maltese Islands [PDF]

, 2014
Bray, Malcolm, Farres, Paul J., Mottershead, Derek, Soar, Philip   +3 more
core   +2 more sources

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Experimental study on the coupling control of rock blasting vibration and rock fragmentation size. [PDF]

PLoS One
He L, Zhang W, Zhao Y, Peng S, Yao Y, Chen S, Wang M.   +6 more
europepmc   +1 more source

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Small-scale experimental and numerical simulation of blasting in jointed rock-like materials under varied joint and explosive conditions. [PDF]

PLoS One
Cui X, Zhao M, Yu H, Zhou J.
europepmc   +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

Modeling progressive failure in steep rock slopes using the combined finite-discrete element method. [PDF]

Sci Rep
Xu J, Deng Z, Feng Y, Tan L, Chi F, Chen G.   +5 more
europepmc   +1 more source

Soil and Rock Classification from High Pressure Borehole Expansion Tests [PDF]

, 2013

core   +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

Composite filter-based detection of rock joints from drilling parameters. [PDF]

Sci Rep
Tong J, Zhang Y, Huang H, Xiong J, Luo Y.   +4 more
europepmc   +1 more source