综采工作面缩面回采的技术研究与应用

 综采工作面在回采过程中，煤层常受到断层等地质构造的影响，给回采工作带来极大的困难。因此，工作面在推进过程中需要采取一定措施通过断层等地质构造。本文针对永煤集团陈四楼煤矿21002工作面在回采过程中遇到落差为19m断层这一实际情况，为顺利通过该断层，研究采用缩面回采的方式即采取缩短工作面长度，拆除部分液压支架，以保证回采工作面的正常推进。21002工作面采用缩面回采过断层技术保证了工作面的正常割煤，提高了煤炭回采率，为煤矿工作面缩面回采技术进行了一次有益的探索，为类似条件下的煤层开采提供了宝贵的经验。

Study and Application on Contracted Face Back Mining Technology in Fully-mechanized Face

As faults and other geological containment impacts the coal seam, it is very difficult doing recovery process at fully mechanized mining working face. Therefore, we shorten the length of the mining working face and demolish part of the mining powered support in order to guarantee the normal stoping. To reduce the impacts of 19m faults to the mining process, Chensilou Mine of Yongcheng Coal &; Electric Group shortened the length of the 21002 working face, successfully raised the recovery rate and did beneficial exploration of shortening the length of the mining working face technology, provided valuable experience for seam mining under similar conditions.