Heilongshan Iron Mine designed to constructed 3 nearly 300m deep shafts ,the raise boring method was used for safe and efficient construction .It’ s the first time that raise boring machine constructs nearly 300m deep shaft underground in China , although it has been mature in constrcting within 100m shallow shaft . The use of the BMC300 raise boring machine is based on the analysis of rock compressive strength and loose coefficient , base on the pilot thrus , reaming thrust , pilot torque and reaming torque . The successful completion of this construction is depedent on the optimization of the construction program and the strict control of the parameters , the key techniques such as reasonable arrangement of stabilizers and control of deflection has also been carefully studied , the deflection rate is about 0.5% . The practice shows that the use of raise boring method in deep shaft underground is worth learning from and promoting .%黑龙山铁矿井下设计施工3条近300m深立井井筒，为实现施工的安全高效，采用反井施工技术。铁矿井下施工100m以内浅立井反井施工技术已较为成熟，但施工近300m深立井在国内尚属首次。通过岩石柱状图分析岩石条件，获取岩石抗压强度、松散系数等数据，计算钻机导孔推力、导孔扭矩、扩孔拉力、扩孔扭矩，结合参数决定采用BM C300型反井钻机。施工中严格执行设计施工参数，合理控制转速保证导孔偏斜率，在合理位置布置三合金翅稳定钻杆，在缺少相关施工经验以及岩层裂隙发育等条件下顺利的完成了施工任务，井筒偏斜率均控制在0.5％左右。实践表明，采用反井施工技术施工井下深立井的成功经验值得推广和借鉴。
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