中硬覆岩综放开采裂缝带发育高度研究

Development Height Study of Fully Mechanized Caving Mining Fractured Zone With Medium-hard Overburden

摘要: 根据潞安矿区王庄煤矿6206综放工作面开采条件，在分析煤层顶板覆岩组合及力学结构特性基础上，采用现场实测、数值模拟、物理模拟等手段综合研究了中硬覆岩综放一次采全厚裂缝带发育特征。结合已有的裂缝带实测资料，通过回归分析，得出中硬覆岩综放裂缝带发育高度与一次采放总厚度成正比，与已有经验公式相比，更能揭示综放覆岩破坏剧烈的特点。
- 中硬覆岩 /
- 裂缝带 /
- 综放开采 /
- 水体下采煤
Abstract: According to 6206^#fully mechanized caving face mining conditions in Lu'an Mining Area，on the basis of analyzing roof overburden combination and the mechanical structural characteristics, the development characteristics of the fractured zone in the medium hard overlying strata under full-seam mining conditions are studied by field observation and numerical and physical simulation. Through combining with the exsiting field observation data and regression analysis, it can be seen that the development height of the fractured zone in the medium hard overlying strata is directly proportional to the total mining thickness. In comparison with the empirical formula, the method can better reveal dramatic failure of overlying strata under such a mining condition.
- medium-hard overburden /
- fractured zone /
- fully mechanized caving mining /
- mining under ground water

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