超高水材料跳采充填采煤法地表沉陷规律  

Surface subsidence law of filling with super-high-water material and skip mining

作　　者：刘辉[1,2] 邓喀中[2] 何春桂[1] 孙春东[3] 董增林[1] 张安兵[1] 

机构地区：[1]河北工程大学资源学院,河北邯郸056038 [2]中国矿业大学江苏省资源环境信息工程重点实验室,江苏徐州221008 [3]冀中能源邯郸矿业集团有限公司,河北邯郸056002

出　　处：《煤炭学报》2013年第A02期272-276,共5页Journal of China Coal Society

基　　金：“十二五”国家科技支撑计划资助项目(2012BAC10B03);国家自然科学基金资助项目(41272389,41104005)

摘　　要：为了研究超高水材料跳采充填采煤法地表变形规律及地表沉陷控制效果,以某矿区地表沉降观测数据为基础,研究了充填开采各阶段的地表变形规律;采用关键层理论,并结合FLAC3D数值模拟实验,研究了跳采过程中的关键层破断及地表沉降之间的时空关系,分析了影响地表沉陷的主要因素,评价了地表沉陷控制效果。研究表明,采用该方法在平均埋深340 m,采厚为4 m的近水平煤层开采时,地表最大下沉值为1 174 mm,下沉系数为0.29,减沉率约为62.8%,采出率为89.2%,且下沉盆地范围明显减小。分析可知,充填可大大减小地表下沉量,跳采可控制下沉盆地的形态,有效的保护了地表重要的建(构)筑物。Abstract：In order to research the surface deformation law and the subsidence controlling effect of filling with super- high-water material and skip mining, based on the observation data of a coal mine, the surface deformation law of every filling and skip mining step was studied. Used the key strata theory and numerical simulation with FLAC3D software, the relationship between key strata breaking and surface sinking in time and space was studied, the main factors of surface subsidence were analyzed, and the effect of surface subsidence controlling was evaluated. The results show that in the mining condition of 340 m depth and 4 m thickness, the maximum subsidence is 1 174 mm ,the subsidence coefficient is 0.29,the subsidence reducing ratio is 62.8% ,the extraction ratio is 89.2% ,and the scope of subsidence basin is reduced obviously. The analysis results show that surface subsidence could be reduced by filling, and the shape of subsidence basin could be controlled by skip mining, in order to protect important buildings on the earth. Key words ： skip mining ; filling; surface subsidence ; super-high-water materal ; key strata; FLAC3D

关 键 词：跳采 充填 地表沉陷 超高水材料 关键层 FLAC3D 

分 类 号：TD853.34[矿业工程—金属矿开采] TD823.83[矿业工程—矿山开采]