华蓥山绿水洞煤矿开采的中厚煤层的倾角普遍在 35～ 5 5° ,过去开采十分困难 ,月产仅 80 0 0t,煤炭回收率仅 5 0 % ,安全条件差 ,效益差。在多年努力的基础上 ,成功地用综采技术解决了开采难题 ,从 1998年 5月设备下井至今 ,工作面平均月产为过去的 4倍 ,煤炭回收率由 5 0 %增至95 % ,安全条件改善 ,劳动强度降低 ,经济效益逾千万元。 The thick coal seam of the Lvshuidong coal mine in Huayingshan generally has a dip angle of 35-55 °. It has been very difficult to mine in the past. Its monthly output is only 80 0 tons and the coal recovery rate is only 50%. The safety conditions are poor and the benefits are poor. Based on years of hard work, the company successfully solved the mining problem with fully mechanized mining technology. Since the equipment went down well in May 1998, the average monthly working face has been 4 times of the previous month, the coal recovery rate has increased from 50% to 95% Improve safety conditions, reduce labor intensity, economic benefits over ten million yuan.