院报 ›› 2024, Vol. 41 ›› Issue (7): 103-109.DOI: 10.11988/ckyyb.20230315

• 岩土工程 • 上一篇    下一篇

黄土高填方场地水分迁移规律

于永堂1,2, 孙茉3, 曹静远2, 朱建民2, 张龙4   

  1. 1.中联西北工程设计研究院有限公司,西安 710077;
    2.西安建筑科技大学 土木工程学院,西安 710055;
    3.中国电建集团西北勘测设计研究院有限公司,西安 710065;
    4.机械工业勘察设计研究院有限公司,西安 710021
  • 收稿日期:2023-03-30 修回日期:2023-08-01 出版日期:2024-07-01 发布日期:2024-07-08
  • 作者简介:于永堂(1983-),男,辽宁鞍山人,正高级工程师,博士,主要从事岩土工程监测与测试技术、湿陷性土地基处理技术的开发与应用方面的研究工作。E-mail:yuyongtang@126.com
  • 基金资助:
    陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-086);陕西省重点研发计划项目(2023-YBSF-499);国家自然科学基金项目(42072302)

Water Migration Law of Loess Deep Filled Ground

YU Yong-tang1,2, SUN Mo3, CAO Jing-yuan2, ZHU Jian-min2, ZHANG Long4   

  1. 1. China United Northwest Institute for Engineering Design & Research Co., Ltd., Xi’an 710077, China;
    2. College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
    3. Power China Northwest Engineering Corporation Limited, Xi’an 710065, China;
    4. China Jikan Research Institute of Engineering Investigation and Design Co., Ltd., Xi’an 710021, China
  • Received:2023-03-30 Revised:2023-08-01 Published:2024-07-01 Online:2024-07-08

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摘要： 为揭示黄土高填方场地的降雨入渗规律,在延安某黄土高填方场地建立监测站,对天然降雨入渗条件下28 m深度范围内的土体含水率进行为期31个月的连续监测,结合降雨量、蒸发量及气温数据分析压实黄土中的水分迁移规律。结果表明:地面下3.5 m是大气影响深度,随降雨量和蒸发量变化,土体含水率变化存在明显波峰与波谷,并呈周年性变化趋势;地面下1.0 m是大气急剧影响深度,当单日降雨量＜29 mm/d时,土体含水率在周年性变化趋势背景下波动较小,当单日降雨量＞29 mm/d后土体含水率出现跳跃式骤升;降雨量越大,土体含水率的增幅越大,降雨持续的时间越长,水分迁移入渗的深度越大,监测期内降雨最大入渗深度为6.0～7.0 m。

关键词: 黄土, 高填方场地, 含水率, 降雨, 水分迁移

Abstract: To unveil the rainfall infiltration patterns at a loess deep filled site, a monitoring station was established in Yan’an to continuously monitor the soil moisture content within a 28 m depth over 31 months under natural rainfall conditions. The water migration within compacted loess was scrutinized based on rainfall, evaporation, and temperature data. Results indicate that atmospheric influence extends to a depth of 3.5 m. With the change of rainfall and evaporation, soil water content exhibits obvious peaks and troughs and annual trend. At 1.0 m depth, atmospheric influence is more pronounced. Soil moisture content shows slight fluctuations below 29 mm/d daily rainfall, followed by sharp increases beyond this threshold. Greater rainfall intensity and duration lead to deeper water migration and infiltration, with a maximum depth observed between 6.0-7.0 m during the monitoring period.

Key words: loess, deep filled ground, moisture content, rainfall, water migration

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