摘要
根据超前液压支架的支护特点,将超前液压支架中的立柱简化为弹性支座,建立超前支架组弹性支座岩梁模型。将超静定岩梁离散为静定单跨梁,利用MATLAB程序计算分析不同支架刚度、巷道高度、顶板弹性模量、支护密度等参数对巷道顶板下沉量的影响。通过计算验证了非等强支护能够使得支护系统与巷道矿压规律相适应,增强超前支护系统适应性。
According supporting characters of advanced hydraulic support, and then the column of advanced hydraulic support wassimplified as elastic support, and detailed elastic support rock beam model of advanced support set. And statically indeterminate rockbeam was dissociated as statically single span beam, the influence that some arguments to roadway roof subsidence were analyzed byMATLAB program, which is about different support stiffness, roadway height, roof elastic modulus, supporting density and soon. The conclusion that supporting system could adapted roadway pressure by non strength supporting was verified by calculated, the a-daption of advanced supporting system was enhanced.
出处
《煤矿开采》
北大核心
2018年第1期5-7,50,共4页
Coal Mining Technology
基金
国家重点研发计划资助(2017YFC0804305):工作面智能化超前支护装备及辅助作业平台
自然科学基金重点支持项目(U1610251)
国家重点基础研究发展计划(973)资助项目(2014CB046302):深部围岩自适应支护原理及系统创新理论
关键词
液压支架
承载特性
弹性支座
超前支护
hydraulic support
bearing character
elastic support
advanced support
