基于弹性薄板模型的开放式充填顶板稳定性研究  

Study on roof stability of open backfilling based on elastic plate model

作　　者：顾伟[1] 张立亚[1] 谭志祥[1] 邓喀中[1] 

机构地区：[1]中国矿业大学江苏省资源环境信息工程重点实验室,环境与测绘学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2013年第6期886-891,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(41071273)

摘　　要：采用超高水材料开放式充填技术的关键是保持顶板的完整性,将充填工作面分别简化为四边固支板、三边固支一边简支板、两边固支两边简支板、一边固支三边简支板和四边简支板5种边界支撑的弹性板,并基于虚功原理推导了弹性地基板以及四边受水平压力作用时弹性板挠度和弯矩的表达式,分析研究了板最大弯矩与推进距离的关系,为超高水材料开放式充填开采工作面开采宽度及工作面的布设方式设计提供依据。根据现场实测数据分析,对理论模型进行了验证。The key of using super high water material open backfilling technology is to maintain the integrity of the roof. The filling face can be simplified into five kinds of boundary support elastic plate. They are： four edges clamped board, three edges clamped side of the simply supported plate, two sides clamped on both sides of the simply supported plate, one side clamped and trilateral simply-supported plate and plate with four simply supported edges. Furthermore, based on the principle of virtual work, the elastic foundation plate and the expression of elastic plate deflection and bending moment when four edges are affected by the horizontal pressure effect are deduced, and the relationship between plate maximum bending moment and forward distance are analyzed. Thus, the model provides the theoretical evidences for the mining width of super high water material open backfilling mining working face and the layout mode of working face. According to the analysis of field measured data, the correctness and reliability of the model can be verified.

关 键 词：超高水材料 虚功原理 弹性薄板 开放式充填 

分 类 号：TD325[矿业工程—矿井建设]