河南理工大学学报（自然科学版）2024，Vol.43Issue(6)：27-37,11.DOI:10.16186/j.cnki.1673-9787.2023060045
夯实矸石压缩-固结蠕变成岩过程及等价采高模型分析
Compression-consolidation-creep-diagenesis process of compacted gangue and its equivalent mining height model analysis
摘要
Abstract
Objectives To investigate the compression-consolidation-creep-diagenesis process of compacted gangue and its equivalent mining height model,using the 1102 gangue filling face of Tingnan Coal Mine as the engineering background,Methods the study employed theoretical analysis,numerical simulation,labo-ratory tests,and field measurements.Results The study found that the maximum roof control gap for the gangue filling face was calculated as the cutting depth plus the end face distance,top beam length,and contact distance of the rear support to the gangue.The rotation and subsidence amount of the roof equalled the maximum roof control gap multiplied by the sine of the support's tilt angle(ht=Lmax×sinθ).The back-fill space height behind the frame equalled the mining height minus the roof's rotation and subsidence amount,underconnecting amount,and bottom heave behind the frame.The compression-consolidation-creep-diagenesis process of compacted gangue in the fill space and their corresponding compression rates were:skeleton adjustment segment(7.42%),slow compression segment(5.39%),consolidation settle-ment segment(0.34%),and creep-diagenesis segment(12.38%).The total rechargeable compression rate was 25.53%.Based on the equivalent mining height,the four-stage equivalent mining height of the 1102 face was:skeleton adjustment segment(0.94 m),slow compression segment(1.10 m),consolidation settlement segment(1.11 m),and creep-diagenesis segment(1.48 m).Conclusions Through the compari-son of probability integration method prediction,numerical simulation,and subsidence observation,it was observed that the surface subsidence curves of the main section of the 1102 working face in strike and incli-nation were bowl-shaped.The surface subsidence curve was gentle in the first two stages and steep in the last two stages.关键词
矸石充填/等价采高/矸石压实/固结成岩Key words
gangue filling/equivalent mining height/gangue compression/consolidated diagenesis分类
矿业与冶金引用本文复制引用
许磊,王思雨,ELMO Davide,丁书学,刘洪林,李文峰,洪紫杰..夯实矸石压缩-固结蠕变成岩过程及等价采高模型分析[J].河南理工大学学报（自然科学版）,2024,43(6):27-37,11.基金项目
国家自然科学基金资助项目(51964043,52074101) （51964043,52074101）
新疆维吾尔自治区"天山英才"培养计划项目(2022TSYCCX0037) （2022TSYCCX0037）
河南省高校基本科研业务费专项基金资助项目(NSFRF240313) （NSFRF240313）
焦作市科技攻关项目(2023210035) （2023210035）
