大跨度巷道厚煤层顶板失稳分析与优化方案研究

Study on Roof Instability Analysis and Optimum Scheme of Thick Coal Seam in Long-span Roadway

以回坡底煤矿20322综放工作面区段运输平巷顶板掘进期间大面积垮冒为研究对象,分析得出了顶板结构失稳的主要原因,并提出了通过优化锚索支护参数及预紧力锚杆索支护结构增强顶支护结构的完整性和抵抗强度来控制松软厚煤顶的支护理念,在工业性实践中取得了良好的效果。

Taking the roof collapse of transport roadway in 20322 fully mechanized caving face section of Huipodi Coal Mine as the research object,this paper analyzed and concluded the main causes of roof structural instability.It also proposed the idea of supporting the soft and thick coal roof with structural integrity and resistance strength by adjusting parameters of anchor cables,which had achieved good results in industrial practice.