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盘古山钨矿于一九六六年和一九六七年先后两次爆发破坏性地压活动。第一次波及范围较小;第二次发生在696米中段至海拔1029米地表,696、761、831、899、970各中段均遭受严重破坏,其规模之大范围之广为国内金属矿山所罕见。本文试图根据当时现场的记录对第二次活动进行综合性力学分析,着眼于破坏性地压活动发生的力源、力性、突破口及全过程的力学推断,为地压预防工作提供参考。 一、矿山概况
In 1966 and 1967, the Pangushan tungsten mine broke ground twice in a destructive manner. The first time the scope of coverage was small. The second occurred in the middle section of 696 meters to an elevation of 1029 meters, and the middle sections of 696,761,831,899,970 suffered serious damage. The scope of the large-scale domestic metal mines rare. This article attempts to conduct a comprehensive mechanistic analysis of the second activity based on the records of the scene at that time, focusing on the source of force, force, breakthrough and the mechanical inference of the whole process of destructive ground pressure activities, and provide reference for the prevention and control of ground pressure. First, the mine profile