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范各庄矿是设计年产180万吨的大型矿井,井田走向长13.5公里,倾斜长3.8公里,面积38.3公里~2。矿井采用竖井阶段石门开拓方式(图1),目前开采的一水平标高-310米,阶段垂高180米,阶段斜长800～900米。采区巷道为分组联合或大联合布置。矿井为一级瓦斯矿井,有煤尘爆炸危险,采用中央式通风系统。矿井涌水量较大1600～1700吨/时。全矿有八个可采煤层,其中一水平有六个可采煤层,总厚度为13米。详见表1。范各庄矿1964年投产,1970年用两个采
Fan Gezhuang mine is designed to produce 1.8 million tons of large-scale mine, mine field to 13.5 km long, 3.8 km long slope, an area of 38.3 km ~ 2. The mine shaft adopts the shaft opening method (Figure 1). At present, a horizontal elevation of -310 m is mined. The stage is 180 m high and the inclined stage is 800-900 m long. Mining area roadway grouping or large joint arrangement. Mine is a gas mine, there is the danger of coal dust explosion, the use of central ventilation system. Large mine water inflow 1600 ~ 1700 tons / hour. The mine has eight recoverable seams, of which one has six coal seams, with a total thickness of 13 meters. See Table 1 for details. Fangezhuang mine put into operation in 1964, 1970 with two mining