摘要
为推广铁路桥下安全开采经验,根据地表及桥梁移动变形观测资料,总结了地表和铁路桥移动变形规律,获得了地表移动参数和概率积分法预计参数,并首次研究了铁路桥变形与地表变形之间的对应关系,得出了地表下沉、倾斜、水平变形与桥梁对应变形之间的系列经验公式,给出了桥梁缝隙变化量与桥梁水平变形之间的关系式.石台煤矿在龙河铁路桥下采取井下开采措施和地面保护措施相结合的方法,安全开采了铁路桥正下方的煤炭.
In order to popularize the safety mining experience under railway bridges, the movement and deformation rule of ground and bridge is analyzed based on observation data, obtaining some ground movement parameters and some predicting parameters for probability integral. The corresponding relation of railway deformation to ground deformation is researched for the first time, getting a series of empirical formulas reflecting the relation of ground subsidence, ground inclination, and horizontal deformation with the bridge deformation. In addition, the formula reflecting the relation of variation in bridge fracture to horizontal deformation is also obtained. In Shitai coal mine, the coal seam beneath the railway bridge has been safely exploited according to the research achievements.
出处
《采矿与安全工程学报》
EI
北大核心
2007年第2期243-247,共5页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(50474064)
关键词
铁路桥下采煤
移动变形
移动参数
预计参数
桥梁缝隙
mining under railway bridge
ground movement and deformation
movement parameter
prediction parameter
bridge beam gap
