论文部分内容阅读
几年来,我矿在党的正确领导下,在全体职工的努力下,不断地学习和推广了苏联和其他兄弟矿山的先进经验,在掘进工效方面取得了巨大的成绩。矿山的岩石特性:以硅化灰岩为主,含SiO_257—80%,并含有一部分石灰岩。硬度 f=10—18,其摩擦性很高,其内摩擦角,最大为7度。其凿岩性不好(极破碎,卡钎),风压6.3公斤/平方公分,使用01—38型自动平钻,BK-15合金钎头,刃角110度,直径42公厘,其穿
In the past few years, under the correct leadership of the party and with the efforts of all staff and workers, I have continuously learned and promoted the advanced experiences of the Soviet Union and other brother mines and achieved tremendous achievements in driving efficiency. Rock characteristics of mines: mainly silicified limestone, containing SiO_257-80%, and contains a part of limestone. Hardness f = 10-18, its high friction, the internal friction angle, the maximum of 7 degrees. The rock drilling is not good (very broken, brazing), wind pressure 6.3 kg / cm, the use of 01-38 automatic flat drilling, BK-15 alloy drill bit, angle of 110 degrees, 42 mm in diameter,