覆岩隔离注浆充填不迁村采煤技术  

Coal mining technology without village relocation by isolated grout injection into overburden

作　　者：许家林[1,2] 倪建明[3] 轩大洋[1] 王晓振[2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]淮北矿业(集团)有限责任公司,安徽淮北235000

出　　处：《煤炭科学技术》2015年第12期8-11,共4页Coal Science and Technology

基　　金："十二五"国家科技支撑计划资助项目(2012BAK04B06)

摘　　要：为提高充填采煤效率、降低充填成本,结合煤系层状覆岩移动特点和控制要求研发了覆岩隔离注浆充填不迁村采煤技术。基于覆岩关键层结构设计合理的工作面采宽并在相邻工作面间留设一定宽度的隔离煤柱,通过地面钻孔对采动覆岩高压注浆充填,在工作面中部形成一定宽度的压实支撑区,与隔离煤柱联合控制覆岩关键层结构的稳定性,从而减小地表下沉,实现不迁村采煤。该技术已在淮北矿区8个煤矿的12个压煤采区得到成功应用,累计采出建筑物下压煤780余万t。In order to improve the coal mining efficiency with backfilling and reduce the backfilling cost, the technology of isolated grout injection into overburden was proposed based on the characteristics of layered strata movement and its control demands. Based on the struc- ture of overburden key stratum, the rational width of work face was designed, and isolated coal pillars with some width were left between ad- jacent work faces.The grout was injected into the mining-induced overburden with high pressure through surface boreholes,which could form a compact area at the center of work face, conjunction with the isolated coal pillars to maintain the stabilization of the key strata,thus surface subsidence value was reduced and the coal resources under villages were extracted without village relocation. The technology of iso- lated grout injection into overburden had been applied in 12 mining blocks of the eight coal mines at Huaibei Mining Area, China, where more than 7.8 million tons of coal was extracted.

关 键 词：建筑物下采煤 覆岩隔离注浆充填 关键层 部分充填 绿色开采 

分 类 号：TD823.7[矿业工程—煤矿开采]