矿业科学学报2025，Vol.10Issue(2)：248-258,11.DOI:10.19606/j.cnki.jmst.2024914
钻采法中煤矸石气力充填系统的模拟实验研究
Simulation experiment on the pneumatic filling of gangue in coal auger mining
摘要
Abstract
This study proposes to address large coal pillars reserved in coal auger mining and coal seam collapse during extraction.We adopted the gangue gas filling process of coal auger mining and set up the experimental platform of pneumatic conveying with different pipeline lengths and arrangement forms based on the actual working conditions underground to simulate the pneumatic conveying conditions of feeding,gangue conveying,filling and receiving in the roadway.This experiment recorded the state of movement,crushing situation and static pressure changes of flow field of gangue particles to investigate the relationship between particle movement state and static pressure of flow field.We found that 1)the maximum static pressure in the pipe reflects the number of particles in the first pile;2)the distribution of particles crushing increases with increasing particle size;3)the fluctuation of static pressure in the flow field is more violent with increasing particle size after crushing;4)the effect of different pipeline configurations in long-distance conveying on conveying time and the use of cyclone intensifier to im-prove the conveying capacity of the long-distance pipeline.This study provides an methodological refer-ence to the industrial promotion of underground gangue pneumatic filling systems.关键词
气力输送/安全输送/钻采法/气力充填/颗粒运动Key words
pneumatic conveying/safe conveying/coal auger mining/pneumatic filling/particle movement分类
矿山工程引用本文复制引用
夏友涛,杨道龙,金凡博,崔玉明,李烈,邢邦圣..钻采法中煤矸石气力充填系统的模拟实验研究[J].矿业科学学报,2025,10(2):248-258,11.基金项目
国家自然科学基金(52075230) （52075230）
江苏省自然科学基金(BK20221394) （BK20221394）
江苏省研究生科研与实践创新计划(KYCX23_2911) （KYCX23_2911）
