【摘要】 由于无时间差分法计算得出的非饱和渗透深度公式繁琐复杂,采用近似渗透解理论,通过最小二乘法理论及相应的计算机程序模拟计算湿度系数f1和f2与湿度θ的关系,得出了相关度较高的非饱和土渗透深度模拟公式,从而使计算工作更加快捷,方便工程技术人员运用.另外,自制了易操作的非饱和瞬态渗流试验装置.以粘土为例,测定了渗透深度随时间的变化值,绘制了渗透深度与湿度的关系曲线,同时,通过试验数据验证了非饱和土渗透深度模拟公式的合理可行性.更多还原

【Abstract】 Because the formula of unsaturated infiltration depth is complex by non-time difference method,an approximate infiltration theory was adopted.The relationship between the humidity coefficient f1 and f2 with humidity θ was calculated by the theory of least squares and the corresponding computer simulation.A high relevance to simulation formula was obtained on infiltration depth of unsaturated soils,which could make the calculations more quickly and facilitate the engineering and technical personnel to use.Easy-to-operate experimental device of unsaturated transient infiltration was made.Taking clay as an example,the change value was measured between the permeating depth with time,and the relationship curve between the penetration depth and humidity was drawn.The reasonable and feasibility of the simulation formula on penetration depth of unsaturated soil are verified by experimental data.更多还原