Results 181 to 190 of about 2,521,798 (304)

Unloading Mechanical Behaviors of Clay Considering Initial Principal Stress Direction Effect: Experimental Study and Modified Constitutive Model. [PDF]

Materials (Basel)
Hu P, Zhang WX, Han Y, Song XH, Zhang L, Ruan JY, Liu JC.   +6 more
europepmc   +1 more source

A contribution to modeling of mechanized tunnel excavation

, 2018
The goal of this research is to investigate the effects of sub-systems during mechanized tunnel excavation via numerical simulation, and to develop the advanced process simulation techniques for the purpose of optimization of the computational costs.
openaire   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Thermal-Environmental Coupling Wear Mechanism of H13 Steel Disk Cutters in Tunnel Boring Machine Excavation of Composite Strata. [PDF]

Materials (Basel)
Pan Y, Chen Y, Xie J, Du X, Fernandez-Steeger TM.   +4 more
europepmc   +1 more source

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

Deep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

Mechanistic study and control of coal pillar deformation and failure in gob-side roadways with extra-thick seams and hard roof. [PDF]

Sci Rep
Zhou J, Shen Q, Li C, Jin H, Liu Y, Jiang H, Zhou T, Li C, Wang B.   +8 more
europepmc   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Application analysis of soil nail and cable support in deep excavations of loess regions under complex environmental conditions. [PDF]

Sci Rep
Zhang X, Zheng S, Liu L, Liu X.
europepmc   +1 more source

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source

Study on the Compressive Mechanical Behavior of Multi-Segment Spliced Beams for Hybrid Prefabricated Reinforced Concrete-Steel Structure Foundation Pit Bracing System. [PDF]

Materials (Basel)
Xu K, Chen J, Li H, Ye J.
europepmc   +1 more source