开滦集团吕家坨矿业分公司,多年来长期处于水采工艺阶段,自从2004年以后才逐渐转型为旱采,水旱转型初期,煤层倾角超过40°的工作面基本不进行回采。随着吕家坨矿业分公司水旱成功转型,加上地质条件日益复杂等因素的影响,迫切需要改进采煤工艺,以达到资源挖潜。2011年2月份, Kailuan Lvjituo Mining Branch, over the years has long been in the stage of water mining technology, since 2004, gradually transformed into dry mining, flood and drought transition, the coal seam inclination of more than 40 ° of the face basically not mining. With the successful transformation of flood and drought of Lujiatuo Mining Branch, coupled with the increasingly complicated geological conditions and other factors, there is an urgent need to improve the coal mining process in order to tap the potential of resources. In February 2011,