井工煤矿开拓掘进费用约占矿井总成本的1/5。降低开拓掘进费用,是提高煤矿经济效益的重要手段。一、合理集中作业,实现快速高效煤矿开拓掘进的方向是集中作业,快速高效。但由于习惯势力的影响,小队组多头作业的保守思想尚没有完全根除。结果造成管理松散,设备占用多,人力、材料浪费,成本高单进低。我矿每减少一个掘进工作面年获直接效益为28.8l万元。其中:减少电费7.23万元,设备租金2.5万元,材料费4.8万元,工资14.28万元。正阳煤矿掘进工作面个数由1980～1989年的18.5个减少 Weigong coal mine excavation costs account for about 1/5 of the total cost of the mine. Reduce the cost of exploiting tunneling is an important means to improve the economic efficiency of coal mines. First, a reasonable focus on operations, to achieve fast and efficient Coal mining and excavation direction is concentrated operation, fast and efficient. However, due to the influence of habitual forces, the conservative thinking of long-term homework has not yet been completely eradicated. As a result, the management is loose, equipment occupies more, manpower and materials are wasted, and the cost is higher and lower. I mine each reduced by a heading face directly received annual benefit of 28.81 million. Of which: 72,300 yuan to reduce electricity, equipment rental 25,000 yuan, material costs 48,000 yuan, wages 142,800 yuan. The number of face excavation of Zhengyang Coal Mine decreased from 18.5 in 1980 ~ 1989