深部巷道组合钢架合理支护间距数值模拟研究  

Numerical simulation study on the resonable yielding space of composite steel frame support in deep roadways

作　　者：刘希亮[1] 孙飞跃 郭佳奇[1] 武文龙[1] 代彦兵 LIU Xiliang;SUN Feiyue;GUO Jiaqi;WU Wenlong;DAI Yanbing(College of Civil Engineering,Henan Polytechnic University,Jiaozuo454000,Henan,China;China construction Seventh Engineering Division Co.,Ltd.,Zhengzhou450000,Henan,China)

机构地区：[1]河南理工大学土木工程学院,河南焦作454000 [2]中国建筑第七工程局有限公司,河南郑州450000

出　　处：《河南理工大学学报（自然科学版）》2021年第6期34-42,共9页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(51474097)。

摘　　要：为确定深部巷道组合钢架合理支护间距,有效控制深部巷道围岩变形,提高巷道施工机械化水平,以焦作煤业集团赵固(新乡)能源有限责任公司赵固二矿11071工作面回风巷为研究背景,采用三维有限差分软件对深部巷道6种支护方案的围岩变形、应力和塑性区分布进行对比分析。结果表明:深部巷道围岩变形和塑性区分布受围岩局部让压效应影响显著;在巷道拱顶、拱底以及两帮与底板交接部位均易出现应力集中现象;巷道开挖引起的岩体破坏以剪切破坏为主。根据数值模拟试验得出了深部巷道组合钢架合理支护间距,优选出的最佳支护方案可以减缓围岩变形,改善围岩应力状态,减少围岩塑性破坏范围,从而提高深部巷道围岩的稳定性。In order to determine the reasonable yielding space of composite steel frame to control the deformation of deep surrounding rock and improve the mechanization construction of roadway, on basis of the construction of 11071 working face in Zhaogu second coal mine, six support plans were simulated and calculated by using three-dimension finite difference software.The results showed that: More obviously the surrounding rock stability of deep roadway were influenced by local yield effect.The phenomenon of stress concentration occured at the vault, surface and the junction of two sides and floor in roadway.The rock mass failure is dominated by shear failure.According to the numerical simulation, the optimum yielding space of composite steel frame maintained by improving the state of stress, restricting its displacement and reducing the plastic failure area of surrounding rock made for stability of rock mass.

关 键 词：深部巷道 组合钢架支护 支护间距 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]