›› 2018, Vol. 39 ›› Issue (11): 4210-4217.doi: 10.16285/j.rsm.2017.0599

• 岩土工程研究 • 上一篇    下一篇

古建筑基座渗漏监测及诱因分析

朱才辉,郭炳煊   

  1. 西安理工大学 岩土工程研究所,陕西 西安 710048
  • 收稿日期:2017-04-05 出版日期:2018-11-10 发布日期:2018-11-15
  • 作者简介:朱才辉,男,1983年生,博士,副教授,主要从事地下洞室、岩土工程数值模拟等方面的研究工作
  • 基金资助:
    国家自然科学基金资助项目(No. 51678484);陕西省黄土力学与工程重点实验室科研计划项目(No. 16JS073)

Monitoring and inducement analysis of seepage of an ancient building base

ZHU Cai-hui, GUO Bing-xuan   

  1. Institute of Geotechnical Engineering, Xi'an University of Technology, Xi’an, Shaanxi 710048, China
  • Received:2017-04-05 Online:2018-11-10 Published:2018-11-15
  • Supported by:
    This work was supported by the Natural Science Foundation of China (51678484) and Shaanxi Provincial Key Laboratory of Loess Mechanics and Engineering (16JS073)

摘要: 为研究某古建筑基座渗漏特征及其诱因,采用现场调研、水分场原位监测、室内试验和数值分析方法,针对基座水分场开展了系统研究,深入分析了基座渗漏病害根源、降雨期间基座内部水分场的时空分布特征和水分迁移规律。结果表明,古建筑基座渗漏的根源是降雨影响,与基座外侧的花坛浇灌用水无关,基座顶部以下2.0 m范围内易于受到降雨的影响,且水分有由基座顶部向基座底部迁移趋势,揭示出:基座顶部的海墁以下防渗层可能失效,基座内部夯土可能形成渗流通道;在2个水文年内,基座外墙以内的3.0 m范围内夯土基本达到饱和,易受到降雨影响而出现泛碱、掉皮、渗漏等现象,10个水文年后水分向基座劵门拱圈部位夯土迁移,并形成稳定水分场,在渗透压力下劵门拱圈部位形成流痕和墙皮脱落现象;通过多手段综合分析,能够深入了解基座病害的演化规律和形成机制,为类似古建筑基座的防渗漏修复措施的确定能够提供科学的参考。

关键词: 古建筑基座, 渗漏病害调研, 水分场, 降雨入渗

Abstract: To investigate the water seepage characteristics and formation mechanism in an ancient building base (ABB), site investigation, in situ monitoring, laboratory test and numerical methods are employed to study the water field in an ABB. The causes of water seepage, spatial-temporal distribution and migration of water during the rainfall are analyzed in detail. The research results show that the causes of water seepage of the ABB are rainfall infiltration rather than plants irrigation. The rainfall has a greater influence on 2.0 m depth rammed soil underneath the base top than the influence at the other positions, and the water has a tendency to migrate from the base top to base bottom. It is indicated that the impervious layer has been in disrepair for long years and the leakage pathway in the rammed soil has been generated. During 2 hydrological years, 3.0 m depth rammed soil adjacent to the side wall of ABB was saturated and was easily influenced by the rainfall infiltration, which caused bloom of the crystalline materials and occurrence of peeling and water seepage. After 10 hydrological years, the water migrated from the base top to the crown of city-gate, and water seepage and peeling happened. The evolution law and formation mechanism of water seepage hazards are analyzed in details through different approaches, and the results can provide scientific base for seepage prevention and restoration measures of the ABB.

Key words: ancient building base, seepage hazard investigation, water field, rainfall infiltration

中图分类号: 

  • K 928.71
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