含气泡土的孔隙流体压缩系数计算分析
发布时间：2018-08-18 10:17
【摘要】：气相封闭的含气泡土是一种特殊的非饱和土类型,其孔隙流体压缩性不可忽略。以小气泡概念模型假设为基础,基于理想气体变形的Bolye定律及表面张力作用等基础理论,推导分析了含封闭气泡土体孔隙混合流体的压缩系数C_(gw)不同计算公式。针对水饱和度较高时已有研究公式的不完善性,采用将溶于水的气体和水作为整体确定其压缩系数的处理思路,在此基础上提出了一种C_(gw)的计算方法,并将不同水饱和度下的计算结果与其他计算方法进行对比研究,分析了其合理性和适用性,还分析了孔隙混合流体压缩系数公式中相关参数变化规律及其对计算结果的影响。
[Abstract]:Gas-phase sealed bubble soil is a special type of unsaturated soil, and its pore fluid compressibility can not be ignored. Based on the assumption of a small bubble conceptual model and based on the Bolye's law of ideal gas deformation and the basic theory of surface tension, different formulas for calculating the compressibility coefficient C _ (gw) of porous mixed fluid containing closed bubbles are derived and analyzed. In view of the imperfection of the existing formulas when the water saturation is high, a method of calculating C _ (gw) is put forward by using the gas and water dissolved in water as a whole to determine its compressibility coefficient. The results of calculation under different water saturation are compared with other calculation methods, and the rationality and applicability of the calculation are analyzed. The variation law of relevant parameters in the formula of compressibility coefficient of mixed pore fluid and its influence on the calculation results are also analyzed.
【作者单位】： 上海申元岩土工程有限公司;同济大学地下建筑与工程系;
【分类号】：TU44
本文编号：2189160
[Abstract]:Gas-phase sealed bubble soil is a special type of unsaturated soil, and its pore fluid compressibility can not be ignored. Based on the assumption of a small bubble conceptual model and based on the Bolye's law of ideal gas deformation and the basic theory of surface tension, different formulas for calculating the compressibility coefficient C _ (gw) of porous mixed fluid containing closed bubbles are derived and analyzed. In view of the imperfection of the existing formulas when the water saturation is high, a method of calculating C _ (gw) is put forward by using the gas and water dissolved in water as a whole to determine its compressibility coefficient. The results of calculation under different water saturation are compared with other calculation methods, and the rationality and applicability of the calculation are analyzed. The variation law of relevant parameters in the formula of compressibility coefficient of mixed pore fluid and its influence on the calculation results are also analyzed.
【作者单位】： 上海申元岩土工程有限公司;同济大学地下建筑与工程系;
【分类号】：TU44
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