Results 81 to 90 of about 1,050 (161)

The correlations between the visual assessment method “3D emotion composition”, basic emotion regulation skills and optimism indicators in breast cancer patients with depressive symptoms

, 2021
Mākslas terapijaVeselības aprūpeArt TherapyHealth CareMaģistra darba pētījuma mērķis ir izveidot vizuālu emociju izvērtēšanas metodi “3D emociju kompozīcija” (3DEK) un pārbaudīt tās ticamību un pamatotību krūts vēža pacientēm ar depresijas simptomiem ...
Astra Lejstrauta
core  

Mechanical response of large-span variable-cross-section tunnels: insights from numerical simulation and field monitoring

Frontiers in Earth Science
Surrounding rock deformation and loosening zone thickness are critical parameters for tunnel support design and stability evaluation. This study examined the variable-cross-section Qingshan Tunnel on the Ren-Zun Expressway.
Naitao Zheng, Naitao Zheng, Youyun Li, Zhifeng Wang, Pengcheng Sun   +4 more
doaj   +1 more source

Research on the Twin-Link Stepping Temporary Support Mechanism and the Repeatable Supportability of the Roof in the Underground Excavation Roadway of Coal Mine

Applied Sciences
The coal mine’s underground heading roadway suffers from a lack of effective temporary support, which contributes to low efficiency and inadequate safety in excavation operations.
Dongjie Wang, Jiameng Cheng, Rui Li, Yuanyuan Qu, Hai Jiang, Yang Shen, Sihai Zhao, Miao Wu   +7 more
doaj   +1 more source

A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in the China Baihetan hydropower plant

Deep Underground Science and Engineering
The big underground powerhouse cavern of the China Baihetan hydropower plant is 438 m long, 34 m wide, and 88.7 m high. It is cut by a weak interlayer shear zone and its high sidewall poses a huge stability problem.
Lifang Zou, Guotao Meng, Jiayao Wu, Wei Fu, Weijiang Chu, Weiya Xu   +5 more
doaj   +1 more source

Effective Elastic Moduli at Reservoir Scale: A Case Study of the Soultz-sous-Forêts Fractured Reservoir

Geosciences
The presence of discontinuities in fractured reservoirs, their mechanical and physical characteristics, and fluid flow through them are important factors influencing their effective large-scale properties.
Dariush Javani, Jean Schmittbuhl, François H. Cornet   +2 more
doaj   +1 more source

Parametric Analysis and Control of Bedding-Inclined Asymmetric Stress in Double-Arch Tunnels: A 3DEC-Based Study on Jointed Rock Masses

Double-arch tunnels in inclined layered jointed rock masses face risks of lining cracking and collapse under bedding-inclined asymmetric stress (BIAS); however, related studies remain limited.
Zaihong Li, Leilei Liu, Fengwei Wu, Pei Tai, Pai Zhang, Liqiang Xu, Wangrong Li   +6 more
core   +1 more source

Interlocking Joints with Multiple Locks: Torsion-Shear Failure Analysis Using Discrete Element and Equilibrium-Based SiDMACIB Models

Applied Sciences
SiDMACIB (Structurally informed Design of Masonry Assemblages Composed of Interlocking Blocks) is the first numerical model capable of extending the equilibrium problem of limit analysis to interlocking assemblies.
Elham Mousavian, Claudia Casapulla
doaj   +1 more source

Experimental study on failure characteristics and rheological properties of pillar-like rock samples with different shapes. [PDF]

Sci Rep, 2023
Guo WB, Wang BB, Tan Y, Zhao GB, Bai EH, Guo MJ, Wen P, Ma ZB, Yang WQ, Wu DT.   +9 more
europepmc   +1 more source

2D/3D numerical modelling of an underground longwall installation road

This paper presents a comprehensive numerical case study on the ground response and support performance for an underground coal mine longwall installation road.
Libin Gong (4921303), Andrew Seccombe (20179941), Richard Campbell (2956233), Mattin Khishvand (21429096)   +3 more
core   +1 more source

A 3DEC numerical analysis of the interaction between uneven rock surface and shotcrete lining : Validation of physical model and evaluation of influence of unevenness on the support effect of shotcrete

, 2013
Although shotcrete (sprayed concrete) has been widely used as rock support in mines and in civil engineering projects, the complex interaction between shotcrete and rock has not been studied well.
Zhang, Ping
core   +2 more sources