降水与蒸发交替作用下西北土遗址盐分迁移与赋存规律OA北大核心CSTPCD
Migration patterns and occurrence laws of salinity in earthen sites in the northwest region under alternating precipitation and evaporation conditions
中国西北干旱地区土遗址,广泛受到地基土盐渍作用的影响.针对当前土遗址载体研究不足的现状,基于室内试验,以NaCl为迁移盐分,借助电导率、含水率等参数及表面劣化情况探究了长城遗址体在短时强降雨-自然干燥循环作用下,地基与墙体根部盐分迁移规律.研究发现,随着降雨-干燥循环次数的增加,土遗址立面逐渐出现了底部崩解(掏蚀)、表面析盐、表皮开裂、空鼓等现象,土遗址根部毛细水上升、盐分迁移和表面劣化,3种现象互有关联.在经历数次循环后,地基中盐分供给模式发生…查看全部>>
The earthen sites in the arid areas of northwest China are widely affected by the salinization of foundation soils.Due to the lack of research on earthen site foundations,this study investigates the salt migration patterns of the foundation and wall roots at the Great Wall site during short-term heavy rainfall and natural drying cycles.Conductivity,moisture content,and other parameters are utilized in laboratory experiments to analyze surface deterioration,w…查看全部>>
谌文武;王科玉;祁强;张少冉;王立
兰州大学土木工程与力学学院,甘肃兰州 730000||兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州 730000兰州大学土木工程与力学学院,甘肃兰州 730000兰州大学土木工程与力学学院,甘肃兰州 730000兰州大学土木工程与力学学院,甘肃兰州 730000兰州大学土木工程与力学学院,甘肃兰州 730000
土木建筑
土遗址盐胀降雨入渗毛细上升水盐运移
earthen sitessalt expansionrainfall infiltrationcapillary risewater and salt migration
《岩土力学》 2024 (8)
2209-2220,12
国家重点研发计划(No.2020YFC1522201).This work was supported by the National Key Research and Development Program of China(2020YFC1522201).
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