Optimization Design and Application of Trapezoidal Roadway Support for Inclined Coal Seam in Yinxing No.1 Well
order to optimize the design of roadway support in the process of excavation of the return air roadway at the 110301 working face of Yinxing No.1 Well,based on the characteristics and geological condi-tions of the return air roadway,theoretical calculation and numerical simulation methods are used to analyze the bolt row spacing and support prestressing field,demonstrate the rationality of existing support parame-ters,and optimize the roof bolt row spacing to 800 mm×800 mm.The field application shows that the maxi-mum displacement of the top and bottom plate and the maximum displacement of the two sides are reduced by 39.8%and 53.8%respectively after optimization,which proves the rationality of the optimization scheme.
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