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一、刨煤方法今后10—15年,西德煤矿拟将工作面平均日产量提高到2500—3000吨(商品煤)并以此作为长期的奋斗目标。1977年所有采用刨煤机的工作面日产商品煤已达1200吨,除发展刨煤机技术外,还决定通过改善刨削工艺来提高刨煤机的日产量。关于回采设备能力的确切概念是每分钟开采每米~2所完成的工作量,它与工作面长度和厚度无关,而是刨削速度与截深的乘积,同时也是刨煤机利用系数的函数。该系数是指煤刨纯运行时间与每班平均作业时间之比。刨削方法的最终目标是获得最佳回采面积。假设刨煤机的利用系数相同,则只有加大截深和提高刨速才能提高回采面积。
First, the method of planing coal In the next 10-15 years, West Germany coal mines intends to face the average daily output increased to 2500-3000 tons (commercial coal) and as a long-term goal. In 1977, all plowed coalface had a daily output of 1,200 tons of coal per day. In addition to the plow technology, it was also decided to improve the plow’s daily output by improving the gouging process. The exact concept of the capability of a mining equipment is the amount of work done per m ~ 2 per minute, irrespective of the length and thickness of the face, but the product of paring speed and cut-off and also a function of the plow utilization factor . This factor is the ratio of the pure planing run time to the average work time per shift. The ultimate goal of the shaving method is to obtain the best recovery area. Assuming the same coefficient of utilization for the plow, the cut-off area can only be increased by increasing cut-off depth and increasing gouging speed.