煤矿安全2024，Vol.55Issue(9)：139-148,10.DOI:10.13347/j.cnki.mkaq.20230824
深部厚煤层回采巷道支护设计及围岩控制研究
Research on support design and surrounding rocks control in deep thick coal seam mining roadway
摘要
Abstract
To study the support design of deep thick coal seam roadway,we propose three support design schemes from the perspect-ive of safety and support cost based on the 432 belt transportation roadway in Tangyang Coal Mine.Theoretical analysis,numerical simulation and engineering practice were used to study the values of the support parameters,displacement and deformation,plastic zone and the actual support effect of each scheme.The theoretical analysis results show that the anchor parameters and row spacing of the three support schemes are in line with the theoretical calculation values.Numerical simulation results show that:the relative displacement and deformation of the top and bottom plates and the two sides of support scheme Ⅰ are 77.6 mm and 103.4 mm,re-spectively;the relative displacement and deformation of support scheme Ⅱ are 79.7 mm and 105.5 mm,which are similar to those of support scheme Ⅰ and have the least plastic failure elements;the maximum displacement and deformation of support scheme Ⅲ are 83.8 mm and 111.1 mm,respectively.The support cost of support scheme Ⅱ is only 64.7％of that of scheme Ⅰ when the support ef-fect is similar.The engineering practice results show that the actual support effect of support scheme Ⅱ can realize the safety support of roadway.关键词
巷道支护/围岩控制/数值模拟/塑性区/位移变形/支护方案Key words
roadway support/surrounding rock control/numerical simulation/plastic zone/displacement deformation/support scheme分类
矿业与冶金引用本文复制引用
尚文政,刘志刚,游武超,袁健博..深部厚煤层回采巷道支护设计及围岩控制研究[J].煤矿安全,2024,55(9):139-148,10.基金项目
国家自然科学基金资助项目(51674159,51804186) （51674159,51804186）
