摘要
为实现煤矸石原位、绿色和规模化处置,煤矸石浆体充填技术作为新兴充填技术近年来得到了快速发展与应用。论文系统回顾和总结了煤矸石浆体充填技术框架提出、浆体充填理论体系形成、工程示范应用及技术迭代创新等不同阶段下浆体充填标志性成果与关键工艺技术,形成了高位注浆、低位灌浆和邻位注浆3种充填方式,建立了煤矸石浆体采空区垮落带流动的“介入理论”和浆体管道输送的“三度一场”理论,成功开展了国内外首套煤矸石井下浆体充填和地面制浆+井下邻位注浆充填示范工程;阐述了煤矸石浆体充填技术体系,围绕煤矸石浆体充填过程中的煤矸石破碎、成品矸石粉料加水制浆、制备浆体泵送和井下目标区域充填等工艺流程,探讨了煤矸石高效分级破碎、浆体精准制备、浆体管道输送和末端充填等关键技术核心问题,分析了破碎设备、筛分设备、计量设备、搅拌设备和泵送设备等关键设备技术原理与应用场景;以张家峁煤矿小空间、多设备、高能力的煤矸石浆体充填需求为工程背景,创新研发设计了煤矸石浆体充填地面制浆、管道输送、井下充填和智能控制等不同系统的布置,年充填矸石量可达55.4万t,形成了煤矸石浆体充填工程示范,实现了矿井矸石零排放和绿色处置,树立了良好的地区示范效应;未来煤矸石浆体充填技术将围绕设备小型轻量化、系统高度集成化、技术迭代创新化等方向进一步研究发展,为构建煤矿绿色开采技术体系、实现国家“双碳”目标提供技术支撑。
In order to realize in-situ,green and large-scale disposal of coal gangue,coal gangue slurry filling technology,as a new filling technology,has been rapidly developed and applied in recent years.This paper systematically reviews and summarizes the landmark achievements and key technologies of coal gangue slurry filling at different stages,such as the proposal of the technical framework,the formation of the theoretical system of slurry filling,the application of engineering demonstration and the innovation of technology iteration,and forms three filling methods,namely,high-level grouting,low-level grouting and adjacent grouting.The“intervention theory”of coal gangue slurry flow in goaf caving zone and the“three degrees and one field”theory of slurry pipeline transportation have been established,and the first demonstration project of coal gangue underground slurry filling and surface slurry preparation+underground adjacent grouting filling has been successfully carried out at home and abroad;This paper expounds the technical system of coal gangue slurry filling,and discusses the key technical core issues of coal gangue high-efficiency grading crushing,slurry precise preparation,slurry pipeline transportation and end filling,focusing on the process flow of coal gangue crushing,water slurrying of finished gangue powder,slurry pumping preparation and underground target area filling.The technical principles and application scenarios of key equipment such as crushing equipment,screening equipment,metering equipment,mixing equipment and pumping equipment are analyzed;Based on the engineering background of small space,multi-equipment and high capacity of coal gangue slurry filling in Zhangjiamao Coal Mine,the layout of different systems such as surface slurry making,pipeline transportation,underground filling and intelligent control of coal gangue slurry filling was innovatively developed and designed,and the annual filling amount of coal gangue could reach 554000 tons,forming a demonstration of coal gangue slurry filling engineering.In the future,the coal gangue slurry filling technology will be further studied and developed in the direction of small and lightweight equipment,highly integrated system,iterative and innovative technology,which will provide technical support for the construction of green coal mining technology system and the realization of the national carbon peaking and carbon neutrality goal.
作者
朱磊
古文哲
袁超峰
刘成勇
潘浩
宋天奇
盛奉天
ZHU Lei;GU Wenzhe;YUAN Chaofeng;LIU Chengyong;PAN Hao;SONG Tianqi;SHENG Fengtian(China Coal Energy Research Institute Co.,Ltd.,Xi’an 710054,China;China Coal Xi’an Design Engineering Co.,Ltd.,Xi’an 710054,China;School of Energy and Mining,China University of Mining and Technology-Beijing,Beijing 100083,China;China Coal(Ordos City)Energy Technology Co.,Ltd.,Ordos 017000,China)
出处
《煤炭科学技术》
EI
CAS
CSCD
北大核心
2024年第4期93-104,共12页
Coal Science and Technology
基金
中煤集团重大科技专项资助项目(ZMYXM·JT-22-02)。
关键词
煤矸石
浆体充填
煤矸石高级分级破碎
绿色开采
“双碳”目标
coal gangue
slurry filling
coal gangue high-efficiency grading crushing
green coal mining
carbon peaking and carbon neutrality goals
