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针对3312工作面工程概况,采用数值模拟方法对沿空巷道底板受底煤高度及沿空小煤柱宽度的影响进行研究。分析沿空巷道底板的应力变化规律,确定合理的布置方式。研究结果表明:实体煤一侧巷道底板中的主应力比沿空小煤柱一侧大,实体煤一侧巷道底鼓或产生底板冲击的可能性将比沿空小煤柱一侧大,底煤厚度越大,这种差异越明显。
According to the general situation of the work face of 3312 working face, the influence of bottom coal height and width of small coal pillar along gob-side entry is studied by numerical simulation method. Analysis of stress changes along the roadway floor to determine a reasonable arrangement. The results show that the main stress of roadway floor in one side of solid coal is larger than that of small coal pillar in the side of solid coal, The greater the thickness of coal, the more obvious the difference.