结晶岩石分子扩散系数薄片渗透测试方法

THE DETERMINATION OF COEFICIENT OF MOLECULAR DIFEUSION IN CRYSTALLINE ROCKS WITH THIN ROCK PERMEATING METHOD

结晶岩石分子扩散系数是影响岩石内部物质运移的重要水文地质参数。由于结晶岩石结构致密,渗透性差,以通常的松散岩石分子扩散系数测试方法无法测得该参数。为此,本文提出薄片渗透测试方法,能够有效地观测出结晶岩石分子扩散现象,计算出分子扩散系数。实验证明,这是结晶岩石分子扩散系数测定的有效方法。

The coefficient of molecular diffusion in crystalline rocks is an important hydrogeologic parameter that affect the migration of substance in rocks. Because of the compact construction and the lower permibility, the parameters can be measured if using determining method of coefficulty of molecular diffusion which is often used in loosen sediment. In this paper, thin rock permeating method has been proposed, which can efficiently observe the molecular diffusing phenomenon in crystalline rocks, calculating the coefficient of molecular diffusion. It has been proved by the experiment that is an effective method in determing the coefficient of molecular diffusion in crystalline rocks.