According to the failure law of the 1070 main roadway, this paper proposes a reasonable position for large section roadways under small coal mines and a design for seven roadway positions. RS2 software was used to establish a numerical model to select a reasonable position for the roadway. The influences of roadway positions on roof separation amount, roof subsidence, lateral displacement on the ribs, vertical stress on ribs and roadway failure areas were revealed. On the basis of influence laws, reasonable positions for the roadway could be determined. In this study, a center distance of 5 m was deemed a reasonable position. Finally, an industrial test was conducted at the original roadway. The experimental results indicate that the deformation of the roadway could be well controlled and the roadway position is reasonable.

中文翻译：

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同煤层小煤矿下巷道位置优化研究

根据1070主巷道的破坏规律，提出了小煤矿下大断面巷道的合理位置和七个巷道位置的设计方法。使用RS2软件建立数值模型，为道路选择合适的位置。揭示了巷道位置对顶板间距，顶板沉降，肋骨侧向位移，肋骨垂直应力和巷道破坏区域的影响。根据影响规律，可以确定巷道的合理位置。在这项研究中，5 m的中心距离被认为是合理的位置。最后，在原始巷道进行了工业测试。实验结果表明，可以很好地控制巷道变形，巷道位置合理。