中厚煤层沿空留巷技术研究及应用

Technology research and application of gob-side entry retaining in medium and thick coal seam

柴里煤矿239采区主采二叠系山西组第3层煤,经过20余年的开采,可采储量锐减,接续紧张的局面近两年尤为突出。为优化3上906东综放工作面生产系统,使其科学合理,实现3下906 5综采工作面和3上906东综放工作面正常接续,对3下906 5运输巷实施沿空留巷,留巷长度350m,作为3上906东综放面轨道巷使用。

main mine coal of Chaili 239 mining area is the three layers of Shanxi formation of Permian system, after more than 20 years of mining, recoverable reserves dropped, continue tense situation in recent years is particularly prominent, the optimization of 3 906 East mechanized caving working face production system, achieve the normal continuation between 3 906 in fully mechanized mining face and 3 906 East mechanized caving face, retained the transportation lane of 3 906 working face along gob as 3 906 East mechanized rail entry, its length is 350 meters,.