摘要
城市扩展过程中大量沟谷区域被侵占填埋,导致地表水的地表汇流路径丧失,地表水入渗填土内形成规模化的地下径流。填土内部的规模化同向渗流,会对大规模的填土土体结构和稳定性产生影响。限于不同城市地质条件和地形条件的差异性,此种潜在危害此前较少受到关注,已发生的填土沉陷和不均匀沉降多归因于压实度不达标和均匀性不好。本文结合具体工程项目提出了在填土回填时期埋设降水管或敷设排水层的工程措施,可有效降低地下水的积累,快速疏导地下水,减轻地下水渗流对土体填土土体结构和稳定性的影响。
During the process of urban expansion,a large number of valley areas are occupied and buried,resulting in the loss of surface water runoff paths and the infiltration of surface water into the fill soil,forming large-scale underground runoff.The same directional seepage inside the backfill soil will have an impact on the structure and stability of large-scale backfill soil.Due to the differences in geological and topographical conditions in differ-ent cities,this potential hazard has received less attention before.The occurrence of soil subsidence and uneven subsidence is mostly attributed to inadequate compaction and poor uniformity.This article proposes engineering measures for burying precipitation pipes or laying drainage layers during the backfilling period of soil filling,which can effectively reduce the accumulation of groundwater,quickly divert groundwater,and alleviate the impact of groundwater seepage on the structure and stability of soil filling.
作者
洪磊
江平
郑天涯
邓楷
HONG Lei;JIANG Ping;ZHENG Tianya;DENG Kai(No.125 Exploration Team,Hubei Bureau of Coal Geology,Yichang 443000,Hubei,China)
出处
《矿产勘查》
2024年第S2期296-301,共6页
Mineral Exploration
关键词
隆岗洼地
深厚填土
地下水疏排
埋管降水
地面沉降
hills and valleys
deep filled soil
groundwater drainage
buried pipe precipitation
surface subsidence
