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| Study on location selection and support parameter optimization of short distance multi-seam mining roadway |
| Zhang Jianhong |
| Shanxi Huairen Zhongneng Luzigou Coal Industry Co., Ltd., Shuozhou 038300, China |
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Abstract Aiming at the serious deformation of the roadway in the lower layer coal seam when the top coal face was caved under the overlying goaf and the remaining protective coal pillar, and the problem such as roof falling and buckling occured in the working face of the lower coal seam during the mining process, Taking Luzigou coal Industry as example the stability of the roadway under the remaining coal pillar was studied by FLAC3D numerical simulation. The results showed that the stress environment was greatly improved when the coal roadway and coal pillar were separated by 35m.With reasonable roadway layout scheme and high prestressed strong support scheme, the mine pressure monitoring results showed that during mining, the roadway roof and floor displacement was 90mm, the two-side displacement was 179mm, and the roadway section shrinkage was only 3.9%, which ensured the safe and efficient recovery of coal resources in the lower 5# coal seam.
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| [ 1 ] 王志强，武 超，罗健侨，等. 特厚煤层巨厚顶板分层综采工作面区段煤柱失稳机理及控制[ J ]. 煤炭学报，2021，46（ 12 ）：3 756 - 3 770.
[ 2 ] 郭 萌，弓培林，李 鹏. 极近距离煤层采空区下巷道补强
支护参数研究[ J ]. 煤炭工程，2020，52（ 1 ）：54 - 58.
[ 3 ] 杨勇勇. 近距离煤层遗留煤柱扰动下巷道合理布置方法研
究[ J ]. 煤，2022，31（ 7 ）：10 - 13.
[ 4 ] 郭兵兵，孙文标. 近距离煤层群下层煤回采巷道合理布置研
究[ J ]. 煤炭技术，2017，36（ 6 ）：58 - 60.
[ 5 ] 王启宇，刘小新. 东川煤矿回采工作面下分层开采防火技
术[ J ]. 陕西煤炭，2022，41（ 2 ）：142 - 145. |
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