粉煤灰-煤矸石膏体材料特性及采空区充填技术分析  

Characteristics of fly ash gangue based paste material and analysis on the goaf filling technology

作　　者：董海清 李亚斌 郭冬梅 黄显武[3] 王博[3] DONG Haiqing;LI Yabin;GUO Dongmei;HUANG Xianwu;WANG Bo(Inner MongoliaLimin Coal Coke Co.,Ltd.,Ordos 017000,China;CHN Energy Wuhai Energy Co.,Ltd.,Wuhai 016000,China;Inner Mongolia University of Science and Technology,Baotou 014000,China)

机构地区：[1]内蒙古利民煤焦有限责任公司,内蒙古鄂尔多斯017000 [2]国家能源集团乌海能源有限责任公司,内蒙古乌海016000 [3]内蒙古科技大学,内蒙古包头014000

出　　处：《煤炭工程》2025年第1期77-82,共6页Coal Engineering

基　　金：煤基固废充填综放工作面采空区集成技术研究(2023QNJS093);粉煤灰基固废制备抑制矸石山自燃表面喷浆封堵材料耐久性能机理研究(JZY21383 N);煤基固废协同制备研石山注浆灭火材料研究(2022LHMS05007)。

摘　　要：为有效减少煤矿采空区地面塌陷以及地表裂缝,同时大面积综合利用煤矸石和燃煤电厂的粉煤灰,以棋盘井矿区的煤矿和燃煤电厂为试验对象,通过不同材料制备试块进行研究,开发了基于棋盘井矿区粉煤灰与煤矸石为基料的煤矿采空区充填材料,提出了煤矿综采面采空区与留巷巷旁充填技术与实施工艺。结果表明:棋盘井及周边地区拥有大量煤矸石和粉煤灰,其成分利于制备充填材料,制备了利用棋盘井的煤矸石和粉煤灰为基础原料的充填材料,其强度在8~15 MPa之间,能够满足不同充填要求,且煤基固废综合利用量达到80%以上。采空区利用低强度充填体、沿空留巷巷旁采用高强度充填体,有利于节约成本,实现快速充填,实现了棋盘井矿区粉煤灰与煤矸石等煤基固废全部消纳。In order to effectively reduce ground subsidence and surface cracks above gob areas of coal mines,and comprehensively utilize coal gangue and fly ash of coal-fired power plants,the coal mines and coal-fired power plants in the Qipanjing mining area were taken as the research objects,and test blocks were prepared with different materials.The filling material of coal mine goaf based on fly ash and coal gangue in Qipanjing mining area was developed,and the filling technology and implementation process of goaf and roadway side in fully mechanized mining face of coal mine were put forward.The results showed that,there are a large amount of coal gangue and fly ash in Qipanjing Mine and its surrounding areas,and their composition is conducive to the preparation of filling materials.The filling materials made from the coal gangue and fly ash is 8~15 MPa,which meets different filling requirements,and the comprehensive utilization of coal-based solid wastes is more than 80%.The low-strength filling material used in the goaf and the high-strength filling used in the roadside along the gob can save the control cost,be conducive to the rapid filling,and realize the full consumption of coal-based solid waste such as fly ash and coal gangue in Qipanjing mining area.

关 键 词：采空区 粉煤灰 煤矸石 膏体材料 分区充填 

分 类 号：TD823.7[矿业工程—煤矿开采]