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黏性土中的水土微观相互作用机制是区别无黏性土的一个重要特征。本文通过对试验数据的分析发现结合水也能传递静水压力,只是传递能力弱一些。相邻土颗粒通过结合水膜连接在一起,形成一个整体,通过面与面接触共同承担外力。提出了基于水道率的力学计算模型,得到扩展的有效应力方程,并在此基础上重新推导了莫尔-库伦强度准则,建立了水土分算和合算的统一算法。该算法能考虑不同土体的物理特性,从水土分算和水土合算的内在机理出发,实现水土分算和水土合算的连续统一,对全面系统地研究弱透水性黏性土的水土压力问题有重要意义。
The mechanism of water-soil micro-interaction in cohesive soil is an important feature that distinguishes non-cohesive soil. In this paper, the experimental data analysis found that water can also be combined with hydrostatic pressure transmission, but the transmission capacity weaker. Adjacent soil particles are joined together by a water film to form a unitary body that takes on external forces through surface-to-surface contact. The mechanical calculation model based on water channel rate is proposed, and the extended effective stress equation is obtained. On the basis of this, the Mohr-Coulomb strength criterion is deduced again, and a unified algorithm of soil and water and cost-effective is established. The algorithm can take into account the physical characteristics of different soils. Based on the inherent mechanism of soil and water conservation and soil and water conservation, the algorithm can achieve the continuous unification of soil and water conservation and soil and water conservation. The comprehensive and systematic study on the water and soil pressure of weakly permeable clay soil Significance.