改造型放顶煤支架工作面设备配套技术研究

将两柱掩护式铺网支架改造成双输送机低位插板式放顶煤支架，与配套综采设备进行综采放顶煤开采工业性试验，研究试验时设备设备配套中存在的主要问题，工作面后部刮板输送机前部堆积大量浮煤的原因，是支架前梁间，尾梁间漏煤，以及后部刮板输送机运煤时溢煤共同作用的结果，其中后二者是堆煤的主要原因，最后提出了相应的改进措施，推动了综放开采在义马矿区易自燃煤层条件下的推广应用。

Technology study of coal face equipment forming a complete set of transformed type supports with sublevel caving

Two props shielding type supports of paving mesh have been changed into supports with the two scraper conveyors which rear one can draw top-coal in low position .Using transformed type supports and other equipment forming a complete set ,industrial test is carried out with fully mechanized sublevel caving .The main problems existed in equipment forming a complete set are studied . The reason for piling up a heap of crushed coal before rear scraper conveyor is the result of acting on each other of the three path, including coal leakage of top-coal over adjacent former beams and tail beams of supports the results of acting on each other of the three parts. Making top-coal overflowed while rear conveyor is working . Among them the latter two parts is main reason . Then their corresponding improved measures are put forward .Finally fully mechanized sublevel caving technology is widely applied in Yima mining area of coal seams prone to spontaneous combustion .