一种层状岩体压水试验成果计算分析渗透性的新方法

A new method of hydraulic conductivity calculating and analysis by water pressure test in layered rock

摘要: 通过对西南某坝区压水试验数据的计算分析,提出了基于中值理论和几何均值的埋深域渗透系数取值区间法。首先将压水试验资料采用巴布什金经验公式和达西公式把吕荣值转换成渗透系数,并分析各分类项的数据分布类型。在分析研究区层状裂隙岩体岩性特征及其组合关系的基础上,运用均值和中值理论从宏观上分析研究区垂向和平面渗透特征,得出均值和中值分析的侧重点;再用渗透系数与埋深散点图绘制小值和大值取值趋势线,继而进行曲线拟合,并完成数理可靠性和物理含义的检验;运用通过检验的方程计算每米埋深的渗透系数,而后在划分的各埋深域内,依据小值和大值取值数量的差别,分别求取其几何平均值,最终得到各埋深域渗透系数取值区间。

Abstract: Based on computational analysis on water pressure test data in a dam area located in the southwest of China,region taking value method of hydraulic conductivity at buried depth domain based on median theory and geometry mean is proposed.Firstly,Lugeon(Lu) is converted into hydraulic conductivity by В.Д.Бабщкин and Darcy formula,and the data distributional model of each classification is analyzed.Basing on the lithologic characteristic and composite relation of the layered fracture rock in the st...