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凿岩是立井井筒掘进主要工序之一,以往的凿岩作业采用手持式凿岩机,凿岩工作占每一掘进循环时间的15～25％,且劳动强度大,工作环境差(噪声大、油雾大),常常发生人身事故。为改善作业条件,加快立井井筒的掘进速度,世界各国普遍重视立井凿岩钻架的研制与生产。苏联1980年使用凿岩钻架的机械化水平已达68.2％;西德胡哥煤矿九号井和恩多夫煤矿在1975年和1982年使用图尔马克四臂伞形钻架,井筒平均月进
Drilling is one of the main processes for vertical wellbore excavation. In the past, the rock drilling operation was carried out by hand-held rock drill. The drilling work accounted for 15-25% of the time of each excavation cycle, and the labor intensity was large and the working environment was poor (noise and oil fog Large), frequent personal accidents. In order to improve working conditions and speed up shaft boring speed, all countries in the world generally attach importance to the research and production of shaft drills. The mechanization level of the Soviet Union using rock drilling rigs in 1980 reached 68.2%; the West Germany Huge Coal Mine No. 9 and the Ndov Coal Mine used the four-arm Turterk quadruped arms in 1975 and 1982,