Mechanical and acoustic emission characteristics of coal at temperature impact

S Liu, X Li, D Wang, M Wu, G Yin, M Li - Natural resources research, 2020 - Springer
Coal and rock mass constitute a type of porous medium. This study investigated the
influence of temperature impact on the mechanical properties and acoustic emission (AE) …

The fragmentation mechanism of heterogeneous granite by high-voltage electrical pulses

X Zhu, M Chen, W Liu, Y Luo, H Hu - Rock Mechanics and Rock …, 2022 - Springer
The high-voltage electrical pulses (HVEP) technology is the most potential method to
improve the rate of penetration (ROP) in deep hard formations. A detailed understanding of …

Numerical electric breakdown model of heterogeneous granite for electro-pulse-boring

X Zhu, Y Luo, W Liu, H Hu, M Chen - International Journal of Rock …, 2022 - Elsevier
The problems of cost, environmental protection and efficiency of hard rock fragmentation in
petroleum exploration, drilling and other projects need to be solved urgently. Electro-pulse …

On the mechanism of high-voltage pulsed fragmentation from electrical breakdown process

X Zhu, Y Luo, W Liu, L He, R Gao, Y Jia - Rock Mechanics and Rock …, 2021 - Springer
With the deepening of the development of natural resources, the difficulty of rock breaking is
increasing. Novel efficient rock-breaking technology and matching rock-breaking tools are …

Breakdown process and fragmentation characteristics of anthracite subjected to high-voltage electrical pulses treatment

F Yan, J Xu, S Peng, Q Zou, B Zhou, K Long, Z Zhao - Fuel, 2020 - Elsevier
Enhanced coalbed methane recovery using high-voltage electrical pulses (HVEP) has been
a popular research topic in recent years. However, the breakdown process and …

On the rock-breaking mechanism of plasma channel drilling technology

X Zhu, Y Luo, W Liu - Journal of Petroleum Science and Engineering, 2020 - Elsevier
Plasma channel drilling (PCD), which is also known as high-voltage electric pulse drilling, is
a highly efficient rock-breaking drilling technology with great development potential. This …

The dynamic fracture process in rocks under high-voltage pulse fragmentation

SH Cho, SS Cheong, M Yokota, K Kaneko - Rock Mechanics and Rock …, 2016 - Springer
High-voltage pulse technology has been applied to rock excavation, liberation of
microfossils, drilling of rocks, oil and water stimulation, cleaning castings, and recycling …

Growth mechanism of three-dimensional plasma channels in high-voltage electric pulse rock breaking

X Zhu, S Liu, W Liu, X Zhou - Rock Mechanics and Rock Engineering, 2024 - Springer
High-voltage electric pulse rock-breaking technology has the potential to improve drilling
speed significantly. Numerous mechanism studies and laboratory experiments have laid the …

Structural evolution characteristics of middle–high rank coal samples subjected to high-voltage electrical pulse

F Yan, B Lin, J Xu, Y Wang, X Zhang, S Peng - Energy & Fuels, 2018 - ACS Publications
High-voltage electrical pulse (HVEP) technology has been proposed to increase the gas
production of low-permeability coal reservoirs in recent years. In this study, we investigated …

Experimental and numerical analyses of electro-pulse rock-breaking drilling

C Li, L Duan, L Wu, S Tan, J Zheng… - Journal of Natural Gas …, 2020 - Elsevier
The electro-pulse boring (EPB) of deep and ultra-deep wells has great market prospects. It
uses controllable energy and is pollution-free. In this paper, research into high-voltage short …