Numerical analysis of the effects induced by normal faults and dip angles on rock bursts

The study of mining effects under the influences of a normal fault and its dip angle is significant for the prediction and prevention of rock bursts. Based on the geological conditions of panel 2301N in a coalmine, the evolution laws of the strata behaviors of the working face affected by a fault and the instability of the fault induced by mining operations with the working face of the footwall and hanging wall advancing towards a normal fault are studied using UDEC numerical simulation. The mechanism that induces rock burst is revealed, and the influence characteristics of the fault dip angle are analyzed. The results of the numerical simulation are verified by conducting a case study regarding the microseismic events. The results of this study serve as a reference for the prediction of rock bursts and their classification into hazardous areas under similar conditions.     

巷道围岩动态工程分类技术研究

基于围岩质量计算、柱状图数字化和重组、结构面诊断、围岩结构装配、采动应力作用后围岩结构演化等研究成果,采用“工程要求、基本结构、演化结构”为一级指标,提出了围岩的动态工程分类技术、分类结果的表式表达技术,并指出了分类结果的应用方法。     

多媒体系统的动态QoS管理

研究了当前多媒体应用的特点与要求,并在多媒体系统的层次结构上引入QoS管理机制,实现了Qo5承诺,QoS协商,进入控制等功能,对实时多媒体应用进行动态的QoS控制．