地下采空区充填密闭墙受力计算与优化分析  

Calculation and Optimizing Analysis of the Force of Filling Airtight-wall for Underground Mined-out Area

作　　者：黄建君[1] 乔登攀[1] 孙宏生[2] 杨兴宏 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650000 [2]玉溪矿业有限公司大红山铜矿,云南玉溪653100

出　　处：《金属矿山》2014年第10期32-36,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:51164016);甘肃省科技重大专项计划项目(编号:1203GKDC003)

摘　　要：通过对充填料浆特殊的力学性能和密闭墙的特殊功能的分析,发现密闭墙不仅要在强度上承受来自料浆的作用力,还要在结构上满足充填料浆的滤水;其结构与矿山充填工艺密切相关,并影响充填生产能力和成本效益。充填料浆的力学特性和密闭墙的破坏机理为矿山密闭墙设计的关键。推导出了密闭墙受力计算模型,并以单相液体和松散介质体为载体,结合郎肯理论建立极限平衡条件,对料浆的成份在属性上和物理状态在时间上的变化相结合分析,优化墙体受力计算和结构,为矿山密闭墙设计提供了更为经济合理的理论依据。By analyzing the mechanical properties of backfilling slurry and the special features of airtight wall,it is found that the airtight wall not only supports the pressure from the filling slurry,but also filters the water in the structure.What＇s more,its structure is closely related to the mine filling technology,which impacts the production capacity and cost-benefit.The mechanical properties of backfilling slurry and the failure mechanism of airtight wall have become the key of airtight wall design.Then,the calculation model of airtight walls is induced.Lastly,the limit equilibrium conditions are built by combining Ken Lang theory with single-phase liquid and loose medium as cartier mediums.The changes about properties and physical state of slurry are analyzed to optimize the structure and force calculation of the wall.The study above provides a more economical and reasonable theory for design of airtight wall.

关 键 词：充填密闭墙 松散介质体 计算模型 极限平衡 受力分析 

分 类 号：TD853.34[矿业工程—金属矿开采]