Results 161 to 170 of about 279,283 (349)

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

Deep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

Origin of continental crust on early Earth. [PDF]

Natl Sci Rev
Zheng YF.
europepmc   +1 more source

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

Deep Underground Science and Engineering, EarlyView.
The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma   +7 more
wiley   +1 more source

Transition towards plate tectonics tracked in the metamorphic signature of Neoarchean synmagmatic transpression. [PDF]

Nat Commun
Zibra I, Morrissey LJ, De Paoli M, Kelsey D, Korhonen FJ.   +4 more
europepmc   +1 more source

Exploration of the Mata Submarine Volcano Group Reveals Volcano-Tectonic-Hydrothermal Links

, 2018
K. H. Rubin, William W. Chadwick, R. W. Embley, S. G. Merle, Timothy M. Shank, W. Cho, D. A. Butterfield, Christian Timm, Joseph A. Resing, Tamara Baumberger, S. L. Walker, Cornel E.J. de Ronde, Edward T. Baker, J. E. Lupton   +13 more
openalex   +1 more source

Paleocene–early Eocene post-subduction magmatism in Sikhote-Alin (Far East Russia): New constraints for the tectonic history of the Izanagi-Pacific ridge and the East Asian continental margin

, 2021
A. V. Grebennikov, И. В. Кемкин, А. И. Ханчук   +2 more
openalex   +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

Bridging the gap between subduction dynamics and the long-term strength of the Sunda megathrust. [PDF]

Nat Commun
Capitanio FA, Gollapalli T, M R, Graciosa JC, Mohd Z, Beall A, Dal Zilio L.   +6 more
europepmc   +1 more source

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

Deep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang, Tianjiao Li, Yingchun Li, Jinlong Men, Chun'an Tang   +4 more
wiley   +1 more source

Mantle recipes for seafloor tectonics. [PDF]

Natl Sci Rev
Brunelli D.
europepmc   +1 more source