12 Result(s)
within
English
Engineering
Geotechnical Engineering & Applied Earth Sciences
Mingzhong Gao
Article
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
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...
-
Article
Variations in the physical and mechanical properties of rocks from different depths in the Songliao Basin under uniaxial compression conditions
With the development of deep energy resources, understanding variations in the physical and mechanical properties of rocks at different depths is significant. In this paper, core samples from ten different bur...
-
Article
Coal permeability model on the effect of gas extraction within effective influence zone
In situ gas extraction is the main measure adopted by mines to achieve mining safety standards. Coal permeability is significantly influenced by coal shrinkage during gas release. Based on effective stress and...
