一、问题的提出我国的一些中小型矿井随着开采工作的进展,井筒延深转而开采下水平煤层。对于提升工作来说提升高度增加,当原有提升机卷筒容纳不下增长的钢丝绳时,按《煤矿安全规程》第368条第一款的规定,必须更换更大型的提升设备。这样将需要大量的投资,而且停产时间长。如果能在原有提升设备 First, the issue put forward Some of our small and medium-sized mines with the progress of mining work, the wellbore deeper mining instead of horizontal coal seam. For lifting work to enhance a high degree of increase, when the original hoist reel accommodate no increase in wire rope, according to “Coal Mine Safety Regulations” Article 368 of the first paragraph, you must replace the larger lifting equipment. This will require substantial investment and long production downtime. If you can upgrade the original equipment