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论文通过采用FLAC3D数值分析软件和现场工业性试验,研究了复杂地质构造条件下工作面超前支承应力分布特征,得到了数值模拟和现场分析下工作面超前支承应力分布规律,取得了如下结论:(1)复杂地质构造条件下工作面回采后超前支承力分布划分为降低区、急剧增高区、急剧降低区、应力缓慢降低区和原岩应力区五个区域;(2)超前支承应力分布基本稳定后,应力峰值位置距工作面前方约10m,应力影响范围约50m,其中剧烈影响区域约23m。
By using FLAC3D numerical analysis software and on-site industrial tests, the stress distribution characteristics of working face advanced support under complex geological conditions are studied. The stress distribution law of working face forward support under numerical simulation and on-site analysis is obtained. The following conclusions are obtained: 1) Under the conditions of complex geological structures, the distribution of leading support force after mining is divided into five areas, ie, the reduced area, sharply increased area, sharply reduced area, slowly reduced stress area and original rock stress area; (2) The stress distribution in advance support is basically stable After the stress peak position from the front of about 10m, the impact of stress range of about 50m, of which severely affected area of about 23m.