34 Result(s)
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Article
Mingzhong Gao
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Article
Micro-mechanical Properties of Main Rock-Forming Minerals in Granite Under Microwave Irradiation
Currently, the large-scale crushing technology for high-strength hard rock is struggling to meet the increasing construction demand for deep underground engineering. Although microwave-coupled mechanical rock ...
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Open AccessStudy on the dynamic constitutive model of coal at different depths in **dingshan mining area
The environment of deep in-situ occurrence is complex, and secondary dynamic disasters occur frequently. Exploring the dynamic constitutive models of coal at different depths is the foundation for deep resourc...
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Nonlinear Mechanical and 3D Rupture Morphology of Saturated Porous Sandstone Under True Triaxial Stress
In deep underground geotechnical engineering, water–rock interaction emerges as a critical factor influencing the stability of engineering rock masses. This study delves into the macroscopic nonlinear mechanic...
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Open AccessAbnormal variation of P-wave velocity of red sandstone after cyclical thermal shock in water
Hot dry rock (HDR) has great development potential because of its advantages of clean, environmental protection and renewable. The study of physical and mechanical properties of HDR is one of the important lin...
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Mechanical Behaviors of Segments in Small Curvature Radius Intervals of Shield Tunnels: From Field Monitoring to Laboratory Testing
Shield tunnels, especially those with small curvature radii, are currently used in the construction of underground rail transit, and they provide important support for the future development and utilization of...
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Open AccessA modified particle contact model for matching the ratios of uniaxial compressive to tensile strength of brittle rocks
The Hertz-Mindlin with bonding (HMB) contact model in the commercial discrete element method (DEM) software EDEM is widely used to simulate and analyze the mechanical behavior of rocks. However, it cannot matc...
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Assessing the Size Effect on Microwave Fracturing of Diorite Using a Dielectric-Loaded Converging Waveguide Antenna
Microwave fracturing and assisted mechanical breakage of rocks has been demonstrated to be efficient and cost-effective, holding great potential in rock excavation. However, the size effect on the fracturing p...
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Analytical Solutions for the Characteristic Size Distribution of the Elliptical Model in Fractured Rock Mass
Fracture characteristics have a significant effect on the mechanical and hydraulic properties of rock mass. In this paper, before modeling a discrete fracture network, the fracture is simplified as a non-simil...
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Open AccessDynamic compressive failure of coal at different burial depths
Dynamic disasters frequently occur in deep coal mines, where coals and rocks are under high in situ stresses. To reveal the failure mechanism of deep burying coals, the specimens were made of buried coals at a...
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Open AccessMechanical behavior of coal under true triaxial loading test connecting the effect of excavation- and mining-induced disturbances
In order to understand the mechanical behavior of a stope and analyse the stress conditions of surrounding rocks after ventilation shaft excavation and the abutment stresses of the top coal mining layout. In s...
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Fracture Mechanisms of Competent Overburden Under High Stress Conditions: A Case Study
High-intensity longwall top coal caving (LTCC) mining of super-thick coal seam in high stress conditions often leads to significant movement and failure of overburden. The competent roof above the super-thick ...
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New permeability model of deep coal rock considering the structure and 3D stress compression-induced anisotropy
Understanding the gas flow behavior in coal mining is conducive to the efficient production of coalbed methane. In coal mining, in-situ stress usually manifests as three-dimensional anisotropy in deep formatio...
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The strata movement and ground pressure under disturbances from extra thick coal seam mining: a case study of a Coal Mine in China
The exploitation of extra thick coal seams (ETCSs) has been emphasized in the Chinese coal industry. However, the strata movement and ground pressure under the mining conditions of an ETCS constitute a complex...
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A Review of Sampling Exploration and Devices for Extraterrestrial Celestial Bodies
Sampling soil or rocks from extraterrestrial celestial bodies is the essential step to detecting the existence of water and life in celestial bodies, it is also an important channel to obtain scientific inform...
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Open AccessThe novel idea and technical progress of lunar in-situ condition preserved coring
The moon is rich in material resources, lunar-based sampling is the foundation for an in-depth understanding of lunar material resources endowment characteristics, exploring the evolution of lunar geological s...
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Contributory Factors and Distribution Characteristics of Asymmetric Deformation in Deep Tunnel
Aiming at the asymmetric deformation of the surrounding rock in deep tunnels, from the perspective of the mechanical environment of the rock layer, the physical characteristics of the surrounding rock and the ...
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Fractal evolution and connectivity characteristics of mining-induced crack networks in coal masses at different depths
In situ capture of crack network evolution is extremely difficult but necessary in fundamental research on mining mechanics and coalbed methane extraction. Systematic field monitoring of the mining-induced cra...
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The fracturing models of hard roofs and spatiotemporal law of mining-induced stress in a top coal caving face with an extra-thick coal seam
Hard roof fracturing characteristics and mining-induced stress behaviors can be studied to ensure production safety in top coal caving face. Field tests were conducted at top coal caving face No. 8309 in the T...
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Experimental and Numerical Study of the Influence of Prefabricated Crack Width on the Fracture Toughness of NSCB Specimens
The accuracy measurement of rock fracture toughness is one of the basic tasks of rock fracture mechanics. In order to study the influence of the width of the prefabricated crack on the fracture toughness of ro...
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Open AccessProteomics provides insights into the inhibition of Chinese hamster V79 cell proliferation in the deep underground environment
As resources in the shallow depths of the earth exhausted, people will spend extended periods of time in the deep underground space. However, little is known about the deep underground environment affecting th...
