【摘 要】
：
The aim of the experiment is to analyze and view the distribution of gangue with different particle sizes in mine spoil pile cross section. According to the Dimensional method, \'Pi\' theorem was employed first to abbreviate ten physical and mechanica
【机 构】
：
Department of Mechanics Engineering and Science, Liaoning Technical University, Fuxin 123000, China
论文部分内容阅读
The aim of the experiment is to analyze and view the distribution of gangue with different particle sizes in mine spoil pile cross section. According to the Dimensional method, \'Pi\' theorem was employed first to abbreviate ten physical and mechanical parameters to three dimensionless groups, and then the similarity criterion and coefficient of the experiment were determined and calculated based on particle size distribution curve.The similarity model was designed and constructed to represent the process of the mine spoil pile. The profile of the final model shows that the small sized particles mainly compose the upper zone of the mine spoil pile, while the bottom of the pile is dominated by bigger sized particles, and the intermediate section presents a zigzag stripe cross-bedding structure which is composed by small-medium scale particles and medium-large scale particles. Each stripe has two critical angles: one is the angle in which gangue particles can maintain their stability condition, with approximate range from 24° to 26°; and the other is the angle in which particles can stop gliding downwards, approximately varying from 34° to 36°.
其他文献
At present the bored construction method is one of the main construction methods of metro and tunnel construction in China. The empirical estimated formulas of tunnel ground surface settlement using the bored construction method were obtained,combining th
The coal hydrogenation reaction process is simply considered as three steps. In the first step, the smaller molecules associated with coal structure units are released as some gases and water in the condition of solvent and heating. In this step, some wea
Scale effect is one of the important aspects in the macro mechanical parameters\' research of rock mass, from a new point of view, by means of lab and field rock mechanics test, establishment of E～Vp relation, classification of engineering rock mass, nu
On the basis of ANSYS finite element model(FEM) software, the deep-leve lrockburst in Fuxin coalfield was simulated numerically. Based on Haizhou Mine and Wulong Mine as two typical deep-level rockburst examples in Fuxin coalfield, the rules and character
Adopted the fractal tree-like failure model, and established the renormalization group transform function of fractured fault, and investigated the mechanism of water-inrush from fault, and found out the critical probability of water-inrush from fault caus
A test system was designed by using a set of self-made experimental devices of coupled coal-gas in simulating mining stress effect,combining the equipment with RMT-150B rock mechanical experimental system,monitoring the rupture process of coal-rock with a
Based on characteristic of the associated mining of multi-coal seam and the engineering geological characteristics of overburden, the mining impact pattern of multiseam mining and the dynamic fracture mechanism of overburden were characterized by applying
In order to study the effect of longwalI mining on suface stream water,monitoring stations of water flow rate was established.A lot of water flowing data were collected before,during and after longwall mining.Based on monitoring data,the effects of longwa
The odd axes resist pressure intensity with large quantity coal gangue was dis-cussed and experimented on fly ash and coal gangue gel filling body between different concentration, proportion and additive dosage. The results show that forepart intensity of