煤矿安全2024，Vol.55Issue(2)：125-132,8.DOI:10.13347/j.cnki.mkaq.20222060
矸石充填体机械压缩过程及宽条带岩层沉降分析
Mechanical compression process of gangue filling and settlement analysis of wide strip rock stratum
摘要
Abstract
Taking 1102 gangue filling face of Tingnan Coal Mine as the research object,theoretical analysis,numerical simulation,laboratory test and field measurement were used to study the process of gangue compression and the law of strata subsidence.The results show that:after 2 MPa compaction,the bulk gangue is compressed by 27.05%to become gangue filling body,the mechan-ical compression process of gangue filling body in fillable space and the compression rate(the ratio of compression amount in each stage to fillable space height)are:skeleton adjustment(7.42%),slow compression(accounting for 5.39%);the equivalent mining height of mechanical compression is the product of the fillable space height and the second-stage fillable compression rate of gangue filling body.The equivalent mining height of gangue filling body in 1102 working face in skeleton adjustment and slow compres-sion is 0.94 m and 1.10 m respectively;the surface subsidence curves of the main section of 1102 working face in strike and inclina-tion are all in the shape of"bowl".During the process from skeleton adjustment to slow compression,the surface deformation curve changed little,and the final maximum subsidence was 39 mm and 41 mm,respectively.关键词
矸石充填/充填开采/等价采高/矸石夯实/宽条带/岩层沉降Key words
gangue filling/filling mining/equivalent mining height/gangue compression/wide strip/strata subsidence分类
矿山工程引用本文复制引用
轩召军,许磊,相峥,蔡玲祥,郭帅,DAVIDE Elmo..矸石充填体机械压缩过程及宽条带岩层沉降分析[J].煤矿安全,2024,55(2):125-132,8.基金项目
国家自然科学基金资助项目(51964043,52074101) （51964043,52074101）
河南省地下空间开发及诱发灾变防治国际联合实验室(河南理工大学)自主课题资助项目 （河南理工大学）
