一、一般情况 天井掘进历来是地下矿山基建和采准切割工程中一项体力劳动繁重的作业,迄今许多矿山都是采用凿岩爆破即所谓普通作业法,由下部向上部开掘。每一循环需架设一次凿岩工作台,敷设一系列梯、棚装置、工人长期在潮湿、粉尘、不安全、低工效的条件中工作。我国矿山现在一般仍沿用此法。这种方法,在六十年代得到了重大突破。 First, the general situation Tunneling has always been underground mining infrastructure and quasi-cutting project in a heavy manual work, so far many mines are using rock drilling blasting is the so-called ordinary operation, from the lower part of the digging. Each cycle need to set up a drilling table, laying a series of ladder, shed devices, workers in the wet, dust, unsafe, low work efficiency conditions. Our mines are still generally used this method. This approach led to a major breakthrough in the 1960s.