摘要
根据对昆明和下路采空区的现场勘察和探测,针对路基下埋设深度及分散密度具有差异性的非规则采空区巷道,提出了充填浆液、开挖回填与装铺钢筋混凝土板三种不同的综合治理措施,并结合FLAC3D数值模拟分析了低等级公路采空区,使用廉价的水泥黏土浆液取代水泥粉煤灰浆液的可行性,且对装铺在浅埋采空区的钢筋混凝土板的稳定性进行了评价,为处治该等级公路提供参考。
Based on the investigation and detection to the goaf under Hexia Road in Kunming,herein three different comprehensive measures,slurry packing,excavation-backfilling and pavement of reinforced concrete slab,were proposed to govern the irregular goaf roadways which relate to burying depth under subgrade and dispersion density difference.With FLAC3D numerical simulation,goaf under low-grade highway was analyzed,that is to say,the feasibility of replacing cement fly ash with cheaper cement clay slurry;and then the stability of reinforced concrete slab paved in shallow buried goaf was evaluated,offering references for the governance of low-grade highways.
作者
段自侠
屈俊童
字晓雷
卢飞
季东
秦贝
DUAN Zixia;QU Juntong;ZI Xiaolei;LU Fei;JI Dong;QIN Bei(School of Architecture and Planning,Yunnan University,Kunming 650500,China)
出处
《路基工程》
2018年第6期219-225,共7页
Subgrade Engineering
基金
国家自然科学基金项目(51308471)
云南省应用基础研究青年计划(2015FD005)
云南省教育厅科学研究基金项目(2015Y017)
昆明市科学基金项目(2015-1-G-01089)
关键词
低等级公路
下伏非规则采空区
稳定性
治理措施
数值模拟
low-grade highway
underlying irregular goaf
stability
governance measures
numerical stimulation