摘要
分析了华苑煤业有限公司9、10号近距离煤层同采时下煤层回采巷道的围岩变形量,通过数值模拟、现场实测等方法,确定了其回采巷道外错上煤层回采巷道12m布置,超前下煤层工作面煤壁30m对巷道加强支护,可以保证回采过程中巷道的稳定性。
The paper analyzed the surrounding rock deformation under the simultaneous mining of close-distance No. 9 and No. 10 seams. Through numerical simulation and field test, the 12m layout of caving roadways of the upper seam and 30m advanced support for the lower seam were determined, which could guarantee the roadway stability in the mining.
出处
《山西煤炭》
2014年第4期27-29,共3页
Shanxi Coal
关键词
近距离煤层
下煤层
回采巷道
稳定性
close-distance seams
lower seam
driving roadway
stability
