景福矿厚煤层大断面开切眼支护优化研究与应用

doi:10.19286/j.cnki.cci.2023.11.012

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Abstract The roof of No.15 coal seam in Jingfu Coal Mine is hard limestone, and the floor is soft mudstone. The deformation control effect of conventional anchor cable support in open-off cut is not ideal, which affects the normal installation. In view of this situation, the deformation characteristics were investigated on site. Through analysis and research, it is considered that the large span, the roof and floor structure and the large change of coal seam thickness are the main reasons for the serious deformation of roadway. On this basis, a support method based on truss anchor cable is proposed, the advantages of this support method are analyzed, and the support parameters are optimized. The observation of mine pressure shows that the optimized support scheme has better control of roadway deformation, obvious effect of roof subsidence reduction, and remarkable economic and social benefits, which can provide reference for the support of large section open-off cut under similar conditions.

Key words： large span open the eye truss anchor cable support parameters

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Linghu Jiyao. Research and application of large section open-off cut support optimization in thick coal seam of Jingfu Mine[J]. CCI, 2023, 46(11): 47-50.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2023.11.012 OR http://www.mtyhg.com.cn/EN/Y2023/V46/I11/47

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