论文部分内容阅读
Practice and adaptable conditions classification of aquifer-protective mining in longwall coalface f
【机 构】
：
School of Mines,China University of Mining & Technology,Xuzhou 221116,China;State Key Laboratory of
【出 处】
：
煤炭学报（英文版）
【发表日期】
：
2010年1期
其他文献
Thecriticalpathmethodisagoodwaytoestimatetheminimumprojectdurationsinceitisthelongestpathduringtheproject.Itisasimpleandpopulartoolusedforplanning,controlandreporting.However,thereareseverallimitationsforthisschedulenetworkanalysistechnique.Forinstance,it
Spatial variability of soil resistivity and rational sampling for corrosion assessment of carbon ste
A two-dimensional numerical model of a large (1000 m×200 m) section of mine strata in the vicinity of seam 349 in Iongwall panel 802 in part B of the Murcki Colliery in the Upper Silesian Coal Basin, Poland, was built using the Universal Distinct Element
Based on the number of fatalities per year,a persistent area of concern in mine safety continues to be equipment related.Data from the period 1995 through 2007 were studied in order to identify major hazards for underground mining equipment-related fatal
To make a better understanding of the mechanical characteristics of the sur-rounding rocks in the tailentry and headentry with different coal seam thickness at fully mechanized top-coal caving face (FMTC face), the stress transition and displacement aroun