采空区缓冲垫层厚度分析与模拟  

Analysis and Simulation on the Thickness of Cushion in Mined-out Area

作　　者：张飞[1] 任春雨[1] 菅玉荣 董川龙 

机构地区：[1]内蒙古科技大学矿业研究院,内蒙古包头市014010 [2]内蒙古东升庙矿业有限责任公司,内蒙古巴彦淖尔市015543 [3]山西大同大学,山西大同市037009

出　　处：《矿业研究与开发》2016年第2期39-42,共4页Mining Research and Development

摘　　要：针对东升庙铅锌矿11号矿体800中段顶柱缓冲垫层设计,运用弹塑性碰撞理论对采空区冒落体与顶柱碰撞产生的冲击力进行计算,得到顶柱承受荷载,运用数值模拟方法对不同垫层厚度时的冒落荷载作用进行模拟分析,得到冒落荷载作用下的顶柱冲切失稳破坏机理,并得出合理垫层厚度为20m。研究结果为11号矿体进行冒落灾害防治提供了依据。Based on the cushion design for top pillar in 800 middle layer of the No. ll orebody in Dongshengmiao Leadzinc Mine, the impact force caused by the collision of falling blocks and top pillar in mined-out area was calculated by the theory of elastic-plastic collision. As a result, the load of top pillar was obtained. Then, numerical simulation was carried out on different thicknesses of cushion under various caving loads. Thus, the failure mechanism of top pillar under caving load was achieved, and the reasonable thickness of cushion was calculated as 20 m. The results provided reference to the prevention and control of caving disaster for the No. ll orebody.

关 键 词：顶柱 缓冲垫层 弹塑性碰撞 数值模拟 

分 类 号：TD853.391[矿业工程—金属矿开采]