俄罗斯西伯利亚典型土坝溢洪道温湿度监测与分析
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摘要
为了提高寒区土坝的稳定性及寒区水利工程的安全性,俄罗斯西伯利亚索拉河流域开始对典型土坝溢洪道附近土体的温度与湿度进行监测。综合考虑积雪、湿度和容重等因素的影响,通过在围护结构下的多年冻土地基温度场对温度应力的动态研究表明:较小结构中的温度应力受积雪厚度、湿度、接触区域的热量交换率等因素影响;然后对溢洪道周边土体湿度、容重和温度应力进行长周期的动态监测研究发现,将防渗装置深入基础和堤防有助于开发新防渗模式并可以改善涵洞现有结构;最后对溢洪道侧墙周边土体变形的分阶段动态研究,首次监测到在湿热状态形成过程中溢洪道周围土体的变形值和压力值。
In order to improve the stability of the earth dam in the cold area and the safety of the water project in the cold area, the temperature and humidity of the soil near the typical earth dam spillway were monitored in the Sola River Basin in Siberia, Russia.Considering the influence of factors such as snow cover, humidity and bulk density, the dynamic study of temperature stress on the permafrost foundation temperature field under the envelope structure shows that:The temperature stress dynamics of the permafrost foundation temperature field under the envelope structure shows that the temperature stress in the smaller structure is also affected by the thickness of the snow, the humidity, and the heat exchange rate of the contact area. The dynamic monitoring of long-term temperature stress on the soil moisture and bulk density around the spillway found that the penetration of the anti-seepage device into the foundation and the dike helps to develop a new anti-seepage mode and improve the existing structure of the culvert. The staged dynamic study of soil deformation under the pressure of the side wall of the spillway, for the first time, the deformation value and pressure value of the soil around the spillway during the formation of the hot and humid state were monitored.
In order to improve the stability of the earth dam in the cold area and the safety of the water project in the cold area, the temperature and humidity of the soil near the typical earth dam spillway were monitored in the Sola River Basin in Siberia, Russia.Considering the influence of factors such as snow cover, humidity and bulk density, the dynamic study of temperature stress on the permafrost foundation temperature field under the envelope structure shows that:The temperature stress dynamics of the permafrost foundation temperature field under the envelope structure shows that the temperature stress in the smaller structure is also affected by the thickness of the snow, the humidity, and the heat exchange rate of the contact area. The dynamic monitoring of long-term temperature stress on the soil moisture and bulk density around the spillway found that the penetration of the anti-seepage device into the foundation and the dike helps to develop a new anti-seepage mode and improve the existing structure of the culvert. The staged dynamic study of soil deformation under the pressure of the side wall of the spillway, for the first time, the deformation value and pressure value of the soil around the spillway during the formation of the hot and humid state were monitored.
引文
[1] Чжан Р В.Исследование теплового режима низконапорных земляных плотин лиманного орошения в условиях Центральной Якутии[М].Автореферат дисс:канд техн наук,1977.
[2] Вотяков И Н.Физико-механические свойства мерзлых и оттаивающих грунтов Центральной Якутии[M].Новосибирск:Наука,Сибирское отделение,1975.
[3] Porkhaev C V.Some data concerning the seepage coefficient of thawed soils[M].Moscow:AS USSR Publishing House,1960.
[4] Курилко А С,Кравцова О Н.Значение коэффициента фильтрации песчано-глинистых смесей от плотности материала[C] // Бюллетень научно-технической информации.Якутск:Изд-во ЯФ СО АН СССР,1982:7-10.
[2] Вотяков И Н.Физико-механические свойства мерзлых и оттаивающих грунтов Центральной Якутии[M].Новосибирск:Наука,Сибирское отделение,1975.
[3] Porkhaev C V.Some data concerning the seepage coefficient of thawed soils[M].Moscow:AS USSR Publishing House,1960.
[4] Курилко А С,Кравцова О Н.Значение коэффициента фильтрации песчано-глинистых смесей от плотности материала[C] // Бюллетень научно-технической информации.Якутск:Изд-во ЯФ СО АН СССР,1982:7-10.
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