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Analysis on rock burst danger when fully-mechanized caving coal face passed fault with deep mining
Rock burst Microseism monitoring system Fault Numerical simulation
2012/3/27
When fully-mechanized caving face passed fault, rock burst accidence easily occurred. The SOS microseism monitoring system was applied to monitor the microseismic activities all time occurred in the c...
A CART technique to adjust production from longwall coal operations under ventilation constraints
Mining safety Coal mine methane Methane emissions Longwall mines CART analyses
2012/4/14
Methane emissions in longwall coal mines can arise from a variety of geologic and production factors, where ventilation and degasification are primary control measures to prevent excessive methane lev...
Dynamic numerical simulation of coal mine fire for escape capsule installation
Coal mine fire Dynamic numerical simulation Escape capsule Personnel evacuation
2012/3/27
Fire in mine laneway leads to disordered ventilation system airflow, and smoke will result in staff poisoning.In such situation, it necessitates to install a rescue capsule in the common staff area. I...
Relationship between EMR and dissipated energy of coal rock mass during cyclic loading process
Coal rock mass EMR energy Dissipated energy Hysteresis loop area Amplitude
2012/3/28
Dynamic collapses of deeply mined coal rocks are severe threats to miners. In order to predict the collapses more accurately using electromagnetic radiation (EMR), this paper researched the energy con...
Theoretical equation of gas desorption of particle coal under the non-uniform pressure condition and its analytical solution
Particle coal The theoretical equation of gas desorption The non-uniform pressure condition Analytical solution
2012/3/31
Based on the second Fick’s law, the theoretical equation of gas desorption of particle coal under the nonuniform pressure condition was developed in this paper. The analytical solution of the theoreti...
Experimental research on the variational characteristics of vertical stress of soft coal seam in front of mining face
Soft coal seam Mining face Vertical stress distribution Layered characteristics Experimental research
2012/3/28
Permeability of coal seam is extremely sensitive to the in situ stress loaded. The techniques of ‘‘Pressure relief’’ have been proved significantly effective in practice to improve the gas permeabilit...
Analysis on relationship between stress and drill cutting weight using numerical modeling–A case study in Jinjiazhuang coal mine
Stress Drill cutting weight Numerical modeling
2012/4/12
The relationship between stress and drill cutting weight (DCW) is studied with numerical modeling and field testing. Jinjiazhuang coal mine 110403 workface is used as a case study. Stress analysis of ...
Simulation analysis on structure safety of coal mine mobile refuge chamber under explosion load
Coal mine Refuge chamber Structure safety Shock wave FEA
2012/3/28
In order to check structural strength of coal mine mobiles refuge chamber, and do security evaluation of the mobile refuge chamber, a refuge chamber model was established, then a finite element method...