Results 41 to 50 of about 162,633 (257)

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Sulfur partitioning between aqueous fluids and felsic melts at high pressures: Implications for sulfur migration in subduction zones

Scientific Reports
Sulfur (S), an essential volatile in subduction zone magmatism, exhibits higher solubility in aqueous fluids compared to silicate melts. Despite its importance, the partitioning of S between aqueous fluids and silicate melts under the conditions of ...
Lanqin Li, Xingcheng Liu, Ting Xu, Xiaolin Xiong, Jintuan Wang, Li Li   +5 more
doaj   +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

Temporal niche partitioning of bacterial communities shaped by hydrologic fluctuations and drought regimes in karst caves

Ecological Processes
Background In monsoon regions, wet-dry cycles may establish environmental gradients that influence both the richness and composition of cave bacterial communities.
Sitong Gong, Weijun Luo, Yina Lyu, Jia Chen, Anyun Cheng, Shijie Wang   +5 more
doaj   +1 more source

Characteristics of stable carbon isotopic composition of shale gas

Journal of Natural Gas Geoscience, 2016
A type Ⅱ kerogen with low thermal maturity was adopted to perform hydrocarbon generation pyrolysis experiments in a vacuum (Micro-Scale Sealed Vessel) system at the heating rates of 2 °C/h and 20 °C/h.
Zhenya Qu, Jianan Sun, Jianting Shi, Zhaowen Zhan, Yanrong Zou, Ping'an Peng   +5 more
doaj   +1 more source

Geochemistry of sediment core PS81/659-1

, 2017
Geochemistry of sediment core PS81/659-
Boetius, Antje, Molari, Massimiliano, Massimiliano Molari (6960149), Antje Boetius (6962468)   +3 more
core   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

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

Geochemistry of sediment core PS81/649-1

, 2017
Geochemistry of sediment core PS81/649-
Boetius, Antje, Molari, Massimiliano, Massimiliano Molari (6960149), Antje Boetius (6962468)   +3 more
core   +1 more source

Sulfur dynamics in a riparian peatland subject to seasonal water table fluctuations: implication on soil organic matter mineralization.

, 2023
Goldschmidt is an international conference on geochemistry and related subjects, organized by the European Association of Geochemistry and the Geochemical SocietyInternational ...
Mügler, Claude, Durand, Véronique, Renaud, Adrien   +2 more
core   +1 more source