Results 161 to 170 of about 86,930 (291)

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Acid Leaching for Carbon Sequestration with Prospects for Critical Metal Recovery. [PDF]

Environ Sci Technol
Turvey CC, Hussain A, Majusiak A, Su D, Mann M, Wang Z, Moyo A, Kronholm B, Yaddala J, Rausis K, Power IM, Spence J, McBride A, Hamilton J, Lammers L, Renforth P, Frierdich A, Wilson S.   +17 more
europepmc   +1 more source

Modeling proppant transport and settling in a 3D propagating fracture

Deep Underground Science and Engineering, EarlyView.
A versatile multiphysics tool is presented for simulating the complex processes involved in hydraulic fracturing treatments. The model couples fracture opening and propagation, variable‐density slurry flow, and proppant particle transport within the multiphysics object‐oriented simulation environment framework, based on two‐phase mixture equations and ...
Robert Egert, Aimé Fournier, Wencheng Jin   +2 more
wiley   +1 more source

Depletion of davemaoite in Earth's ambient lower mantle. [PDF]

Nat Commun
Hao M, Murakami M, Saha P, Guignot N.
europepmc   +1 more source

Hopmannite, Ba2(Ti5Fe)O13, a new hexatitanate from the Bellerberg volcano, Germany

Institute of Geological Sciences (GEO) - Mineralogy ...
Marciniak-Maliszewska, Beata, Cametti, Georgia, Schäfer, Christof, Juroszek, Rafał, Krüger, Biljana   +4 more
core   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Petrographic data from a stratigraphic interval containing a gamma-ray anomaly near the Theresa-Keeseville formational boundary in eastern Ontario, Canada. [PDF]

Data Brief
Al-Mufti ON, Crow HL, Knight RD, Russell HAJ.   +3 more
europepmc   +1 more source

Major engineering breakthrough of Well XA‐1, the deepest ten‐thousand‐meter well in a global sedimentary basin

Deep Underground Science and Engineering, EarlyView.
Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu, Qingwen Tan, Sen Zhu, Guangyou Zhu   +3 more
wiley   +1 more source

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

Prediction of Nuclear Magnetic Resonance Surface Relaxivity for Shales. [PDF]

ACS Omega
Cheng J, Zhang S, Song X.
europepmc   +1 more source