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一、钻眼方面近几十年来,苏联在钻眼方面有极大的发展,许多先进技术与设备都较其他国家采用得早;例如,1931～1932年苏联采用了深孔钻眼的方法来落矿,这是世界的创举,1935～1936年苏联又第一次使用了接桿钻眼的方法。目前在深孔落矿方面,苏联广泛采用了深度小于35～40公尺的炮眼,直径是75～85～100公厘。根据在实际工作中的经验证明,35公尺以内深的炮眼是比较好穿凿的,如果超过35公尺,炮眼的弯曲率就会急剧增大,再深不仅曲率增大,装药也很困难。
First, the drilling aspects In recent decades, the Soviet Union has made great progress in drilling, many advanced technologies and equipment are adopted earlier than other countries; For example, the Soviet Union from 1931 to 1932 adopted the method of deep hole drilling Mining, which is the world’s pioneering work, 1935 ~ 1936 the Soviet Union for the first time used the method of post drilling. At present, in deep-hole mining, the Soviet Union widely uses blastholes of less than 35 to 40 meters in depth and has a diameter of 75 to 85 to 100 millimeters. According to the actual work experience has proved that within 35 meters deep blasthole is better to wear chisel, if more than 35 meters, the blasting of the blast hole will be increased sharply, and then not only the depth of curvature increases, loading is also very difficult .