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湘东铁矿矿务局和北京冶金建筑研究院,自1980年开展开缝式摩擦锚杆研究以来,先后完成了实验室及现场工业试验,取得了较为成功的经验,于1982年12月进行了技术鉴定。从试验开始到现在,我局已在8个采场使用了这类锚杆支护,其中留矿法采场有6个,支护空场面积达4000余米~2,支护锚杆3000余套。实践证明,该类锚杆作为新型支护材料,特别是在急
Xiangdong Iron Ore Bureau and Beijing Metallurgical Construction Institute, since 1980 to carry out the research of slotted friction anchor, has completed laboratory and field industrial tests, and achieved more successful experience, carried out in December 1982 Technical appraisal From the beginning of the experiment to the present, our bureau has used such bolt support in 8 stopes, of which 6 are stopes for ore retention, and have an area of over 4000 meters ~ 2 for supporting airspace, supporting bolts 3000 More sets. Practice has proved that this type of bolt as a new type of support material, especially in urgent