The sequence of excavation for the shaft of diversion system at Pushihe storage power station is to excavate the pioneer well used by back well boring machine, then by hand air drill to expand it.
蒲石河抽水蓄能电站引水系统中的竖井开挖，拟采用反井钻机进行导井开挖，人工手风钻钻孔扩挖的方式施工。
2
In the past all this sorting and checking was done by hand. It was boring and repetitive involving a lot of people in long hours of work.
过去，全部清分和核对工作都是手工操作的。这是一项重复而又烦人的工作，牵涉很多人，工作时间又长。
3
The method avoids the boring adjustment by hand and increases the work efficiency greatly.