27 Result(s)
within
English
Earth Sciences
Mechanical Engineering
Jia **g
Article
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Article
Numerical test and evaluating method of impact trend of rock-coal system
The impact trend of rock-coal system was studied by the method of accumulating and releasing of deformation energy and interaction of rock-coal system. The system model of roof-coal-floor was established. Base...
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Overview of the South African mine health and safety standardization and regulation systems
Outlined the South African mine health and safety regulatory framework, including the roles of government, tripartite council, service agencies, mine enterprises, rescue stations and workers unions, analyzed t...
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Bifurcation characteristics of coal spontaneous combustion and analysis of critical state of gaseous reaction in a packed bed
The numerical model was presented for the coal combustion in the packed bed. The bifurcation characteristic of the ignition-extinction of solid-phase smoldering and transition to flaming was studied for the pa...
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A new matrix-based mathematical model for determining unidirectional circuits in a ventilation network
The occurrence of local circulating ventilation can be caused by many factors, such as the airflow reversion during mine fire, the improper arrangement of local fan or underground fan station and the man-made ...
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The propagation law and analysis of gas explosion in U type duct
In order to explore the propagation law of gas explosion in U type laneways, the propagation law of flame and shock wave in U type duct were experimentally and theoretically investigated. It is shown that the ...
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Analysis and control of hydraulic support stability in fully-mechanized longwall face to the dip with great mining height
The working condition of the hydraulic support in working face can be divided into three kinds of situations in the following: roof fall and collapse with cavity, advancing support and supporting. Took single ...
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Reliability analysis of tunnel surrounding rock stability by Monte-Carlo method
Discussed advantages of improved Monte-Carlo method and feasibility about proposed approach applying in reliability analysis for tunnel surrounding rock stability. On the basis of deterministic parsing for tun...
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Practical application of pressure regulating technology for fire district in Meiyukou Coal Mine
Based on the simulated laboratory experiment of pressure balance for fire extinguishing, the pressure regulating technology was summarized for the fire district in Meiyukou Coal Mine. The technology includes t...
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Airtight negative pressure dust-control technology and application of transpersite in the coal conveyer belt system
Presented a new coal dust control program that was airtight negative pressure dust-control technology at the transpersite, combining with analysis with the movement of air currents and numerical simulation of ...
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Research on design system of band conveyer driven by linear friction
The band conveyer driven by linear friction is a new device. It can reduce drive size and conveyor belt tensity, and increase delivery capacity. It has feasibility and usability particularly in altering the or...
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Nonlinear elastic-perfect plastic constitutive model of soil-structure interface under high stress
Briefly introduced the simple shear apparatus under high stress that was developed from RMT. A series simple shear tests under high stress show that the relation curve between shear stress and tangential displ...
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Fire risk evaluation research on fully mechanized coalface based on the uncertainty measure theory
A relatively perfect coalmine fire risk-evaluating and order-arranging model that includes sixteen influential factors was established according to the statistical information of the fully mechanized coalface ...
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Spatial data modeling for coalfield geological environment
Presented a study on the design and implementation of spatial data modeling and application in the spatial data organization and management of a coalfield geological environment database. Based on analysis of ...
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Experimental study and theoretical analysis on the effect of electric field on gas explosion and its propagation
The effect of the electric field with different intensity on explosion wave pressure and flame propagation velocity of gas explosion was experimentally studied, and the effect of electric field on gas explosio...
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Application research on three-dimensional virtual mine in the framework of internet of things
Based on the information system characteristics of mine, proposed network architecture design of the mine property. And in this framework based on the design of three-dimensional virtual mine described the app...
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Rockburst hazard assessment based on electromagnetic emission in **ngfu Mine
In order to research the danger caused by the rockburst, the electromagnetic emission (EME) in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and t...
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Application of dual structure theory on motivating safe behavior of coal mine staff
Based on behavior science and direct causes analysis of serious accidents in Chinese coal mines in recent 5 years, a conclusion that unsafe behaviors of coal mine staff were the direct causes of these serious ...
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Analytic computation on the forcible thawing temperature field formed by a single heat transfer pipe with unsteady outer surface temperature
A comprehensive and systematic research on the forcible thawing temperature field formed by a single heat transfer pipe with unsteady outer surface temperature was carried out by analytic computation according...
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Water quality variation of mining-subsidence lake during the initial stage: cases study of Zhangji and Guqiao Mines
Four quarters’ water collecting and monitoring samples were done in the mining subsidence lakes of different water storing periods (2 to 7 years), considering the water storing time and pollution sources state...
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Features of gas geology and its main controlling factors in **xiang mining area, Jiangxi Province
**xiang Mining Area in Jiangxi Province is one of the major coal-producing areas and is prone to serious coal and gas outburst, therefore, it is of significance to research on gas geological features and its...
