论文部分内容阅读
[!--newstext--]
[!--title--]
【摘 要】
：
It is difficult to accurately calculate the lump coal rate in a fully mechanized mining face.Therefore,a numerical simulation of the coal wall cutting process,which revealed the crack expansion,development,evolution in the coal body and the corresponding
【机 构】
：
Key Laboratory of Deep Coal Resource Mining (CUMT),Ministry of Education,China University of Mining
【出 处】
：
国际煤炭科学技术学报（英文版）
【发表日期】
：
2021年6期
其他文献
Based on multiphase flow theory and capillary mechanics,the dimensionless bond number expression of the influence of string grille wire spacing on droplet spreading is derived.Taking a liquid film formed by spreading droplets based on Kelvin correlation,t
When mining extra-thick coal seams,the main cause of strong ground pressure are the high-level thick and hard strata,but as yet there is no active and effective control technology.This paper proposes the method of subjecting hard roofs to ground fracturin
Characteristic strength and acoustic emission properties of weakly cemented sandstone at different d
As coal mining is extended from shallow to deep areas along the western coalfield,it is of great significance to study weakly cemented sandstone at different depths for underground mining engineering.Sandstones from depths of 101.5,203.2,317.3,406.9,509.9
Influence of anchorage length and pretension on the working resistance of rock bolt based on its ten
In coal mining roadway support design,the working resistance of the rock bolt is the key factor affecting its maximum support load.Effective improvement of the working resistance is of great significance to roadway support.Based on the rock bolt\\\'s tens
Detailed projections of the Former Soviet Union (FSU) fossil fuel production has been created.Russian pro-duction has been modelled at the region (oblast) level where possible.The projections were made using the Geologic Resource Supply-Demand Model (GeRS
In situ stress measurement and analysis of the stress accumulation levels in coal mines in the north
For non-directional drilling cores,selection of samples and the test methods for in situ stress measurements to evaluate the Kaiser effect (KE) were proposed,and the magnitude and direction of the principal stresses were derived from first principles.Base
Onsite mine fire generates large volumes of heat-affected coal in Jharia coalfields,India.Direct utilization of such heat-affected coal in thermal utilities is not feasible as such coal does not have the desirable volatile matter required for combustion.I
To assess the deformation of a coal bunker and propose effective preventative measures for such,a real-time monitoring system was designed.Moreover,methods were proposed for monitoring the coal-bunker inclination,settle-ment,groundwater level,temperature,
The thermal effect caused by deep magma intrusion can not only accelerate the metamorphism of coal body,but also bring additional thermal field that changes the mechanical environment of coal seams,thereby affecting the per-meability of coal seams.Differe
Experimental and numerical study of coal-rock bimaterial composite bodies under triaxial compression
To accurately predict coal burst hazards and estimate the failure of coal pillars in underground coal mining systems,it is of great significance to understand the mechanical behavior of coal-rock bimaterial composite structures.This paper presents experim