错层位巷道布置采煤法接续工作面顶板来压步距研究

通过总结分析错层位巷道布置下工作面上覆岩层结构和运动特点,得出错层位巷道布置采煤法接续工作面来压时,其顶板的支撑条件与传统留煤柱采煤方法不同。文章在分析错层位巷道布置采煤法接续工作面来压时顶板支撑条件的基础上,建立力学模型,利用经典弹性力学理论计算顶板断裂步距的方法,分析了其与传统采煤法来压步距的差异。最后,用FLAC3D数值模拟进一步模拟验证了分析结果。

Study on Roof Weighting Step of Connected Working Face of Stagger Arrangement Mine

Abstract: Through the theory analysis on the overburden strata of working face and its movement characteristics of stagger arrangement. Found in stagger arrangement mine the supporting condition of connected working face is quite different from convention coal mine at the period of initial and periodic weighting. The article is based on the analyses of roof supporting condition of connected working face of stagger arrangement mine, established mechanical model, and then using the method of calculating roof weighting step in classical theory of mine pressure control, analysis the different between stagger mine and traditional mine. Finally further with FLAC3D numerical simulation verifies the analysis results.