基本解释：非饱和孔隙度
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Constitutive modelling of unsaturated porous media is of first importance for a wide range of the problems,for instance,safety analysis of toxic waste repositories and stability evaluation of buildings.对非饱和孔隙介质进行数值模拟是非常必要的,如:核废料贮存中的安全分析、房屋建筑的稳定性评价等。
By using the Galerkin method,all the governing equations are discretized in the space domain and time domain respectively;and a two-dimensional FEM code for coupled hydro-mechanical elastoplastic analysis of saturated-unsaturated porous medium is developed.从建立应力平衡方程、水连续性方程和弹塑性矩阵入手,使用Galerkin方法,将各控制方程分别在空间域和时间域进行离散,初步开发出了一个用于分析饱和–非饱和孔隙介质中水–应力耦合弹塑性问题的二维有限元程序。
Correlation between relative humidity and degree of capillary saturation derived in the laboratory is not suitable to the service life prediction.混凝土保护层孔隙水饱和度是混凝土结构钢筋腐蚀寿命预测模型的关键参数。
Of which,wet basis ash content is defined by gamma-ray log,and the precondition is the ash mainly argillaceous and contains no radioelement;carbon is defined by density log and artificial gamma log,and moisture calibration for density log;saturated porosity is defined by density log after ash calibration;gas content is defined by acoustic log and density log compou.其中以自然伽马测井确定湿灰分,该方法的前提条件是湿分主要是泥质且泥质不具放射性元素;以密度测井与人工伽马测井确定含碳量,并对密度测井作湿分校正;以灰分校正后的密度测井确定饱和水孔隙度;含气量的估算以声波测井和密度测井组成的复合参数ΔT/dDEN来确定,或以视电阻率曲线确定含气量。
