一、工程概况 潘三矿井为设计年产原煤300万吨的大型矿井。设计采用竖井和分区石门开拓。在井田中部、接近储量中心的古隆起顶部开凿主井、副井和中央风井(井筒特征见表1),在东西两翼分别开凿东风井和西风井。 First, the project profile Pan three mines for the design of an annual output of 3 million tons of raw coal mine. Design using the shaft and partition Shimen opened up. In the center of Ida, near the center of the paleo-uplift, the main shaft, auxiliary shaft and central shaft were excavated (see Table 1 for wellbore characteristics), and the east and west wings were used to excise the east and west shafts, respectively.