期刊论文

A coupled thermo- pore water-mechanical model for a weak interlayer in water saturated slope and its application

中文

岩土力学

1000-7598

2019

40

5

1663-1672

10.16285/j.rsm.2018.0114

国家自然科学基金(No.51374129,No.51774187) 湖南省科技厅重点研发计划(No.2017SK2280) 湖南省教育厅重点科研基金(No.17A184) 湖南省自然科学基金(NO.2017JJ4009) 南华大学“铀矿山岩土工程灾害预测与控制”校级创新团队计划项目(No.NHCXTD04)。

本校为第一机构

为了研究温度对水饱和边坡夹层力学参数的影响,将水饱和边坡夹层视为固-液两相的线弹性体,建立了水饱和边坡夹层热-孔隙水-力耦合作用的力学模型,并推导了其耦合控制方程;采用物理相似模拟的方法,建立了与边坡原型相似的试验模型,研究温度引起的边坡夹层力学参数的变化特征;通过比较分析理论计算结果与模型试验结果,验证了所建立的耦合力学模型的适用性.研究结果表明:孔隙水压力系数和热压力系数是引起水饱和边坡夹层孔隙水压力增加的关键控制因素;孔隙水压力系数取决于孔隙排水压缩特性和固相介质压缩特性,这两者差值越大,孔隙水压力系数越大;孔隙水热膨胀系数和孔隙体积热膨胀系数是影响热压力...

To investigate the effect of temperature on mechanical parameters of a weak interlayer in water-saturated slope, the interlayer is regarded as a linear elastic body of coupled solid-liquid phase. A mechanical model for the thermal-pore water-mechanical interaction of the interlayer in water-saturated slope is established, and its coupling control equation is deduced. Using the physical similarity method, an experimental model similar to the slope prototype is established to study the variations of the inerlayer mechanical parameters caused by t...