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我国西南地区,山体赋存煤层埋藏深度和基岩厚度变化大、冲积层薄。煤层巷道稳定性受山体赋存特征影响大,是目前亟需研究解决的重大课题。在分析总结前人研究成果的基础上,运用理论分析、数值模拟和现场实测等方法,对山体赋存煤层回采巷道进行了分析研究,提出了山体赋存煤层回采巷道承载层的概念,分析研究了承载层存在的条件、稳定性影响因素以及承载层在工程实践中的效果验证。
In the southwest of our country, the burial depth of the coal seam buried in the mountain and the change of bedrock thickness are large, and the alluvial layer is thin. The stability of coal seam roadway is affected greatly by the characteristics of mountain deposit, which is an important issue urgently needed to be solved. On the basis of analyzing and summarizing the research results of predecessors, this paper analyzes and studies the mining roadway in mountainous coal seam with the methods of theoretical analysis, numerical simulation and field measurement, and puts forward the concept, analysis and research The condition of bearing layer, the influence factor of stability and the effect of bearing layer in engineering practice were verified.