老顶断裂位置及断裂后回转角的数值分析  

The Numerical Analysis of the Cracked Position and Inclination of the Main Roof

作　　者：刘双跃 钱鸣高 

出　　处：《中国矿业大学学报》1989年第1期31-36,共6页Journal of China University of Mining & Technology

摘　　要：本文利用数值分析的方法,模拟了煤的采出、直接顶的垮落和采空区矸石充填的全部过程。从中分析和确定了老顶在回采过程中的断裂位置和可能形成的回转角,以及相关的影响因素。由此得到的结论与现场实测和理论上的推理相一致,从而解决了直接顶稳定性研究中的上部边界条件问题。The paper presents the simulation of the whole process of coal extraction, immediate roof collapse and the goave packing. On this basis the cracked position and inclination of the main roof are determined. The results obtained have been found to be close to that of in situ experiments and theoretical reasoning, and the upper-boundary condition in studying the stability of immediate roof can thus be resolved.

关 键 词：老顶 断裂位置 回转角 数值分析 

分 类 号：TD322.1[矿业工程—矿井建设]