Results 241 to 250 of about 143,227 (288)

Stress wave propagation and crushing mechanism of soft-hard composite coal under water-jet impact load. [PDF]

Sci Rep
Li X, Wu R, Cheng L, Qi Y, Wang H, Shen P.   +5 more
europepmc   +1 more source

Research on an intelligent drilling parameter optimization method using sliding window segmentation based on the hydraulic-mechanical specific energy model. [PDF]

PLoS One
Li W, Liu Y, Li X, Deng B, Zhao H, Zhu L, Zain U.   +6 more
europepmc   +1 more source

Probing rock rupture with naturally occurring nuclide signals. [PDF]

Proc Natl Acad Sci U S A
Zhou JQ, Mao R, Luo X, Cardenas MB, Chen YF, Gan FS, Zhou CB, Li C, Tang H, Hu R, Yang Z, Manga M.   +11 more
europepmc   +1 more source

Evolution of Overburden Fractures and the Water-Conducting Fracture Zone in Closely Spaced Coal Mine Seams under Highly Water-Rich Aquifers. [PDF]

ACS Omega
Liu X, Zheng L, Liu H, Zuo Y, Ren W, Zhu X, Zhou X.   +6 more
europepmc   +1 more source

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On the rock-breaking mechanism of plasma channel drilling technology

Journal of Petroleum Science and Engineering, 2020
Abstract 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 paper presents a method to study the rock-breaking mechanism of PCD technology.
Xiaohua Zhu, Yunxu Luo, Weiji Liu
openaire   +3 more sources

Research on rock-breaking mechanism of cross-cutting PDC bit

Journal of Petroleum Science and Engineering, 2018
Abstract Cross-cutting PDC (Polycrystalline Diamond Compact) bit is an efficient drilling technology that increases the rock-breaking efficiency and prolongs the service life of the bit through forming mesh-like pattern in the bottom-hole. This paper studies the rock-breaking mechanism of the cross-cutting PDC bit with the combination of both ...
Yingxin Yang, Chunliang Zhang, Min Lin, Lian Chen   +3 more
openaire   +3 more sources

Mechanism and effect of jet parameters on particle waterjet rock breaking

Powder Technology, 2017
Abstract The particle (spherical steel particles) waterjet is a new type of waterjet that can effectively break rocks and other materials. In this study, the simulation combined with the experimental procedure was conducted for optimization of the jet parameters (such as velocity, water pressure, dwell time, concentration, diameter, and standoff ...
Jian Zhao, Guicai Zhang, Yiji Xu, Ruihe Wang, Weidong Zhou, Liexiang Han, Yi Zhou   +6 more
openaire   +3 more sources

TBM-cutter rock-breaking effect and mechanism considering different cutting sequences

Bulletin of Engineering Geology and the Environment, 2022
Mengmeng Hu, Bo Zhang, Biao Li, Bin Liu, Wenzheng Cao, Bin Xu   +5 more
openaire   +3 more sources

Laser rock-breaking mechanism considering rock inhomogeneity and the temperature effect

Computers and Geotechnics
Zhengkuo Ma, Chunshun Zhang, Congying Li, Wei Wei, Jie Dong   +4 more
openaire   +3 more sources