综采工作面采煤机故障及预防措施

Coal Mining Machine Failure and Preventive Measures at the Header Working Face

店坪煤矿9-206工作面前期回采期间MG400/930-WD型双滚筒采煤机频繁出现故障,影响工作面回采时间为39 h,设备维修费用高达69.5万元,严重制约着工作面安全高效回采。因此重点对采煤机常见故障进行剖析,并根据生产实际情况提出了若干项预防措施。通过实际应用效果来看,采取预防措施后,206工作面在后期回采中采煤机故障率由原来的27.5%降低至4.2%,工作面影响时间缩短至7.2 h,减少采煤机维修费用近60万元,取得了显著应用成效。

Based on the frequent failures of MG400/930-WD double-drum coal mining machine during the pre-mining period of 9-206 working face in Dianping coal mine,which affects the working face recovery time of 39 h and the equipment maintenance cost of 695,000 yuan,and seriously restricts the safe and efficient recovery of the working face,the common failures of coal mining machine are analyzed and several preventive measures are proposed according to the actual production situation.Through the actual application effect,after taking the preventive measures,the coal mining machine failure rate of 205 working face in the late recovery was reduced from 27.5% to 4.2%,the working face impact time was shortened to 7.2 h,and the coal mining machine maintenance cost was reduced to more than 600,000 yuan,which achieved significant application effect.