一、改造的原因及改造前的状况 我矿业公司的主井提升担负着全矿井原煤提升的任务,设计年产量为400万吨,提升设备全部是从西德德马克公司和西门子公司引进的,1978年定的货,1979年到货。由于现场的原因,直到1986年才开始安装并投入使用。在矿井的投产初期,由于原煤提升任务量小,每天的提升量大约在5000吨左右,随着矿井的达产及超产,由原设计能力每年的400万吨到 First, the transformation of the reasons for the transformation and the situation before the transformation of the main shaft of mine mining company responsible for the upgrading of coal mine tasks, the design annual output of 4 million tons, lifting equipment are all imported from West Germany Mark and Siemens, 1978 set of goods, arrived in 1979. Due to field reasons, it was not until 1986 that it was installed and put into use. In the initial operation of the mine, due to the small amount of upgrading of raw coal, the daily lifting capacity is about 5,000 tons. With the mine’s production and over-production, from the original design capacity of 4 million tons per year