镜铁山矿井下切采一体化技术

镜铁山桦树沟铁矿目前采用无底柱分段崩落法开采，该方法采用人工掘凿切割天井，掘进成本高，劳动强度高，作业环境差，不安全。为了解决人工掘凿切割天井存在的问题，以无底柱分段崩落法切割工序为研究对象，以爆破参数理论分析、根据经验公式或工程类比、及工程试验研究手段，研究出切采一体化工艺技术。研究了降低Simba 1354台车中深孔凿岩偏斜率措施、Simba 1354凿岩台车施工127 mm空孔的技术措施、微差爆破技术措施。利用导向钻管施工高精度炮孔和利用扩孔钻头扩孔形成大直径空孔的功能，实现了无底柱分段崩落法切割工序的机械化作业，取代了人工掘凿天井切割工序。切采一体化技术的实施降低了工人的劳动强度、改善了生产作业环境，避免了切割工序产生职业病的危害，促进社会和谐与稳定。

Underground Cutting and Mining Integrated Technology in Jingtieshan Mine

The pillarless sublevel caving method is currently used in Huashugou Iron Mine of Jingtieshan.The adoption of the artificial digging and cutting raise in this method causes high tunneling cost，high labor intensity，poor and dangerous working environment.In order to solve the problems of artificial digging and cutting raise，taking the cutting process of the pillarless sublevel caving as the research object，a cutting and mining integrated technique was developed through the theoretical analysis on the blasting parameters，the empirical formula or engineering analogy，and the engineering tests.The measures of reducing the deviation of medium depth drilling with Simba 1354 trolley，technical measures for construction of 127 mm empty holes by Simba 1354 drilling rig，technical measures of millisecond blasting control were studied.The high precision borehole by guide tube and the reaming hole by the reaming bit realized the function of large diameter empty hole.The mechanized operation of cutting process in pillarless sublevel caving method was realized to instead of manual digging and cutting process.The implementation of the cutting and mining integrated technology reduces the labor intensity of workers，improves the working environment，avoids from the harm of occupational diseases caused by cutting process，and promotes social harmony and stability.