摘要
煤矸石和粉煤灰具有良好的抗压、抗剪切、抗冻融性能,作为路基填料具有变废为宝、节能降碳等优势。本项目基于煤基固废在路基工程中的体积稳定性、力学特性及热稳定性,提出了五大关键控制指标,建立煤基固废填筑路基应用分级评价标准,揭示了煤基固废颗粒破碎后级配动态演变过程与细观力学特性,并基于水分及污染物迁移规律提出了煤基固废路基防污设计结构。通过实体工程实践,开展典型大宗工业固废路基填筑规模化应用关键技术研究和工程规模化应用实践,取得了显著的经济、社会及环境效益。
Coal gangue and fly ash have good compression resistance,shear resistance,freeze-thaw resistance,as subgrade fillers have the advantages of turning waste into treasure,energy saving and carbon reduction.Based on the volume stability,mechanical properties and thermal stability of coal-based solid waste in roadbed engineering,the project proposed five key control indicators,established the application grading evaluation criteria for coal-based solid waste filling roadbed,revealed the dynamic evolution process of gradation of coal-based solid waste particles after crushing and the micromechanical characteristics,and proposed the anti-pollution design structure of coal-based solid waste roadbed based on the law of moisture and pollutant migration.Through the solid engineering practice,the research on the key technology of large-scale application of typical industrial solid waste roadbed filling and the engineering large-scale application practice have achieved remarkable economic,social and environmental benefits.
出处
《交通节能与环保》
2024年第S1期4-7,共4页
Transport Energy Conservation & Environmental Protection
关键词
固废材料
煤矸石
粉煤灰
填筑路基
规模化应用
solid waste material
coal gangue
cly ash
cill the subgrade
scale application
