竖井是地下矿山建设的咽喉。随着采矿工业的发展,竖井工程量不断增加,生产矿山由于采矿强度的提高,生产井筒的延伸工程量亦不断增多。因此,不断改进施工工艺,革新掘进设备,提高施工 The shaft is the throat of underground mines. With the development of the mining industry, the amount of shaft works has been increasing. As the strength of mining has been increased, the amount of extension work on production shafts has also been on the rise. Therefore, continuous improvement of construction technology, renovation of tunneling equipment, improve construction