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以ZFYD2500型反井钻机为原型,针对该钻机在施工煤仓开始扩孔阶段出现的钻杆断裂事故,结合现场数据对钻杆进行力学分析和计算,总结出大直径反井钻机在扩孔施工中应如何避免钻杆断裂事故的发生。
ZFYD2500 anti-shaft drilling rig is taken as the prototype. According to the drill rod fracture accident occurred during the reaming process of the construction coal bunker, the drill rod is analyzed and calculated with the field data, and the conclusion is drawn that the large diameter anti- How to avoid the occurrence of drill pipe rupture.