区域性温度因素对饱和粘土固结的影响  

The regional temperature effects on consolidation of saturated clays

作　　者：郭鹏辉[1] 林玉祥[1] 胡燕[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤田地质与勘探》2012年第2期62-66,共5页Coal Geology & Exploration

摘　　要：不同地区地基饱和粘土的固结过程受到当地区域性温度的影响而不同。通过探究区域性温度因素在饱和粘土固结过程中的主要影响因子,基于太沙基一维渗流固结理论,得出了区域性温度因素对饱和粘土的固结度及固结时间的影响规律。结果显示:对固结度的影响,同一时间因数时,温度较高的地区比温度较低的地区土层平均固结度大,且时间因数在(0.3,0.5)范围内达到最大固结度差值;对固结时间的影响,较高温度地区的土层固结速度比较低温度地区大。土层平均固结度较小时,不同地区的固结时间相差不大,平均固结度较大时,则固结时间差别较为显著。研究成果对工程实践具有指导意义。In different areas, the consolidation process of saturated clay is influenced by local regional temperature. This paper presented the effects of regional temperature on the consolidation of saturated clays based on Terzaghi＇s one-dimensional consolidation theory. The impact-factors induced by temperature during the process of consolida- tion were studied. The results show the differences of degree of consolidation and consolidation time. For the de- gree of consolidation, results show that the degree of consolidation in the area with higher regional temperature is larger than that in the area with lower regional temperature, and it would achieve the maximum difference when Tv is in the range of （0.3, 0.5）. For consolidation time, it needs less time to reach a certain settlement in higher re- gional temperature than in lower regional temperature. When the average degree of consolidation is lower, there is no obvious difference in the consolidation time in different regional temperature area, but when it becomes higher, the difference would become more obvious.

关 键 词：区域性温度 太沙基一维渗流固结理论 固结度 渗透系数 

分 类 号：TU4[建筑科学—土工工程]