南华大学学报（自然科学版）2025，Vol.39Issue(2)：34-41,8.DOI:10.19431/j.cnki.1673-0062.2025.02.005
煤基固废绿色胶结材料充填实验研究
Influence of Buried Depth Ratio on Peak Acceleration Response of Subway Station and Adjacent Multistory Buildings
摘要
Abstract
Coal mining subsidence and bulk solid waste accumulation are bottlenecks in re-alizing green and low-carbon development in mining areas.Taking a coal mine in northern Shaanxi as an example of filling mining,a coal-based solid waste cementitious material was developed,and the new cementitious material was utilized to carry out a proportioning test with the filling gangue sand to test the uniaxial compressive strength and fluidity of the ce-mentitious filler with different gray-to-sand ratios(1∶3,1∶4,1∶5,and 1∶6),metakaolin fly ash ratios(1∶3,1∶4,1∶5,and 1∶6),and modulus of fineness(2.32,2.64,2.91,and 3.19)conditions.The uniaxial compressive strength and mobil-ity of the cemented filler.The study showed that the compressive strength of the filler was directly proportional to the ratio of fly ash and ash to sand ratio of metakaolin and inversely proportional to the fineness modulus,while the flowability of the filling slurry was inversely proportional to the ratio of fly ash and ash to sand ratio of metakaolin and directly propor-tional to the fineness modulus.Compared with the traditional cement-based filling material,the cost of the new filling material prepared from this coal-based solid waste ce-mentitious material was reduced by 48.69％,the carbon dioxide emission was reduced by 64.71％,and the overall solid waste utilization rate reached 96.1％.关键词
煤矸石/颗粒级配/胶结充填/绿色充填材料Key words
coal gangue/particle grading/cemented filling/green filling material分类
建筑与水利引用本文复制引用
辜振道,龙慧,程睿栋,邢澳祥,彭帅..煤基固废绿色胶结材料充填实验研究[J].南华大学学报（自然科学版）,2025,39(2):34-41,8.基金项目
湖南省自然科学基金项目(2024JJ7441) （2024JJ7441）
