Results 61 to 70 of about 14,344 (210)
True triaxial test and failure criterion of coal gangue concrete
Meitan xuebaoIn view of the pollution caused by the large storage of coal gangue and the shortage of natural aggregate in concrete, using coal gangue as coarse aggregate is a reasonable way to solve the above problems.
Weiping ZHAO +5 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
critical stress intensity factor, hole, crack propagation, blasting load
Yantu gongcheng xuebao, 2018 In order to reflect the influences of bonding in structured soils on the ultimate shear stress ratio and dilatancy law, a dynamic moving critical state line (MCSL), which parallels to the traditional static critical state line (CSL) and moves to the CSL ...
ZHU En-yang 1,2, LI Xiao-qiang 2, ZHU Jian-ming 3
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Shock and Vibration, 2021 To research the percolation rate of gas-filled coal based on true triaxial condition, this paper uses the three-phase coupling true triaxial servo test device to carry out the seepage test of coal, and the percolation rate of coal under different ...
Xiao Fukun +3 more
doaj +1 more source
Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway
Energy Science &Engineering, EarlyView.Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu +9 more
wiley +1 more source
Advances in Materials Science and Engineering, 2015 Joints and cracks are frequently encountered in underground rock mass. During the process of tunnel excavations or other underground construction, the rock will be exposed suddenly, and such sudden unloading process will cause crack expansion and ...
Meng Wang, Zheming Zhu, Jun Xie
doaj +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Saturated high plasticity clays show complex nonlinear, rate‐dependent, and hysteresis behaviors under non‐monotonic stress paths, requiring advanced mathematical constitutive equations for accurate description. Taking into account the inherent advantages of kinematic hardening mechanisms in simulating complex stress histories, this paper ...
Wei Cheng, Zhen‐Yu Yin
wiley +1 more source
Ellipsoidal halo finders and implications for models of triaxial halo formation
, 2013 We describe an algorithm for identifying ellipsoidal haloes in numerical simulations, and quantify how the resulting estimates of halo mass and shape differ with respect to spherical halo finders.
Despali, Giulia +2 more
core +1 more source
Fractal and FractionalTo study the fractal characteristics and energy evolution of sandstones under true three-dimensional stress states, a true triaxial compression test and a cyclic loading and unloading test of sandstone specimens under different loads were carried out ...
Qihang Zhang +2 more
doaj +1 more source
Temperature induced pore fluid pressurization in geomaterials [PDF]
, 2010 The theoretical basis of the thermal response of the fluid-saturated porous materials in undrained condition is presented. It has been demonstrated that the thermal pressurization phenomenon is controlled by the discrepancy between the thermal expansion ...
Ghabezloo, Siavash, Sulem, Jean
core +3 more sources