Results 211 to 220 of about 790,307 (296)

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

Periodic Noise Characteristics and Acoustic Control in Long Highway Tunnels: An FEM Study with In Situ Validation. [PDF]

Materials (Basel)
Ding R, Gu X, Liao C, Wang H, Xu Z, Lei K, Jiang J.   +6 more
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

Study on the Strength Parameters and Permeability Evolution Law during Loading Process of Coal Measure Sandstone after Thermal Treatments: Implications for Syngas Leakage during Underground Coal Gasification. [PDF]

ACS Omega
Xiao W, Liu K, Zhang D, Wan H, Jia M, Zhang X.   +5 more
europepmc   +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

The Effect of Sowing Date on the Biomass Production of Non-Traditional and Commonly Used Intercrops from the <i>Brassicaceae</i> Family. [PDF]

Plants (Basel)
Brant V, Rychlá A, Hamouzová K, Vrbovský V, Procházka P, Chára J, Holejšovský J, Piskáčková T, Bhattacharya S, Dreksler J.   +9 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

Research on the disaster bearing characteristics system and capacity depth disaster response curves in urban underground three dimensional spaces. [PDF]

Sci Rep
Wang Y, Liu P, Chu S, Lin J, Liu H, Ma T.   +5 more
europepmc   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Development of an Advanced Multi-Layer Digital Twin Conceptual Framework for Underground Mining. [PDF]

Sensors (Basel)
Cacciuttolo C, Atencio E, Komarizadehasl S, Lozano-Galant JA.   +3 more
europepmc   +1 more source