摘要
为确保掘进巷道施工的合理性,对恒阻大变形锚索和单体液压支架的力学特性进行了现场测试,并对综合支护效果进行了数值模拟。研究结果表明:恒阻大变形锚索与单体液压支架的支护效果良好,在施工成本允许的前提下,增大切顶高度和切顶角度、加固锚索,可有效降低巷道的应力峰值,改善应力集中现象。
In order to ensure the rationality of the tunnel construction,the mechanical properties of constant resistance and large deformation anchor cable and single hydraulic support were tested on site,and the comprehensive support effect was simulated.The research results show that the supporting effect of the support body is good,on the premise of the construction cost,increasing the cutting height and angle,strengthening the anchor cable can effectively reduce the stress peak value of the roadway and improve the stress concentration.
作者
吕婧
王磊
刘丽丽
孙维丽
Lyu Jing;Wan Lei;Liu Lili;Sun Weili(Qingdao Huanghai University,Qingdao 266427,China;The 41st Research Institute,China Electronic Technology Group,Qingdao 266000,China)
出处
《煤矿机械》
北大核心
2020年第9期45-48,共4页
Coal Mine Machinery
基金
青岛黄海学院校级科研项目(2018KJ18)
山东省自然科学基金(ZR2016EEB36)。
关键词
围岩
支护
恒阻大变形锚索
单体液压支架
力学特性
有限差分
surrounding rock
support
constant resistance and large deformation anchor cable
single hydraulic support
mechanical property
finite difference
