Results 51 to 60 of about 3,306,443 (202)

Deformation and Failure Mechanism of Surrounding Rock in Mining-Influenced Roadway and the Control Technology

Shock and Vibration, 2021
Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the plastic zone boundary is derived.
Jicheng Feng, Shuaifeng Yin, Zhiheng Cheng, Jianjun Shi, Haoyu Shi, Haitao Xu, Shuying Guo   +6 more
doaj   +1 more source

Correlation between fracture surface morphology and toughness in Zr-based bulk metallic glasses [PDF]

, 2010
Fracture surfaces of Zr-based bulk metallic glasses of various compositions tested in the as-cast and annealed conditions were analyzed using scanning electron microscopy.
Conner, R. Dale, Demetriou, Marios D., Johnson, William L., Kim, C. Paul, Suh, Jin-Yoo   +4 more
core   +1 more source

The Coal Pillar Width Effect of Principal Stress Deflection and Plastic Zone Form of Surrounding Rock Roadway in Deep Excavation

Geofluids, 2022
In order to explore the influence of coal pillar width on the principal stress deflection and plastic zone form of surrounding rock in deep roadway excavation, taking 11030 working face transportation roadway of Zhaogu No.
Ji Li, Rongguang Zhang, Xubo Qiang
doaj   +1 more source

Anelastic to Plastic Transition in Metallic Glass-Forming Liquids [PDF]

, 2007
The configurational properties associated with the transition from anelasticity to plasticity in a transiently deforming metallic glass-forming liquid are studied.
Demetriou, Marios D., Harmon, John S., Johnson, William L., Samwer, Konrad   +3 more
core   +1 more source

Approximate solution of plastic zone in surrounding rock under three-dimensional stress field based on Drucker-Prager strength criterion

矿业科学学报
This study proposes to address the stability of roadway surrounding rock under three-dimensional stress field based on the Drucker-Prager criterion and the theory of elastic-plastic mechanics.
LIU Hongtao, LIANG Jialu, HAN Zijun, LIU Qinyu, QIAO Zhongjin   +4 more
doaj   +1 more source

Research on large deformation mechanism of deep roadway with dynamic pressure

Energy Science & Engineering, 2020
In this paper, the large deformation mechanism of deep dynamic pressure roadway is studied from the perspective of the formation and development of plastic zone, and creep and damage of rock mass.
Lei Fan, Weijun Wang, Chao Yuan, Wenqing Peng   +3 more
doaj   +1 more source

Analysis of Surrounding Rock Pressure of Deep Buried Tunnel considering the Influence of Seepage

Geofluids, 2022
This paper takes the surrounding rock of deep tunnel as the research object and considers the action mechanism under the influence of seepage. Based on the Mohr-Coulomb criterion, the stress mechanism of surrounding rock of deep buried tunnel is analyzed
Qingchen Yao, Yukun Ma, Zongyang Xiao, Zudi Zhang, Yaxin Lu, Chenyang Liu   +5 more
doaj   +1 more source

Theoretical Study of the Evolution Characteristics of the Plastic Deformation Zone of Type I–II Composite Fractured Rock under Osmotic Pressure

Applied Sciences
The coupled seepage–stress action has a significant deterioration effect on the structural face of the hydraulic tunnel enclosure, which intensifies the shear rupture tendency of the deteriorated structural face of the rock mass.
Zelin Niu, Yun Cheng, Jiafeng Pei, Tian Xu   +3 more
doaj   +1 more source

Construction Method of Honeycomb Gas Flow Network Channel: Structure-Based and Engineering Response on Plastic Zone Distribution Form

Applied Sciences, 2023
The plastic zone of the surrounding rock of the borehole is a high-quality channel for gas flow. Studying the distribution form of the plastic zone in the surrounding rock of the boreholes and the characteristics of the extended connection network is ...
Chao Yuan, Lian-Xin Li, Lei Fan, Yue-Yang Xu, Jun-Jie Wu   +4 more
doaj   +1 more source

Analysis of API 5C3 failure prediction formulae for casing and tubing [PDF]

, 2012
Due to the increasing demand for oil and gas, coupled with the fact that oil reserves are becoming rather scarce, the petroleum industry is pushed to drill and complete deeper wells. Threaded connections are often the weakest link in this process and are
De Baets, Patrick, De Waele, Wim, Galle, Timothy, Staelens, Seppe   +3 more
core   +1 more source