摘要
弥散系数是多孔介质对某种污染物质弥散能力的参数,在宏观上反映多孔介质中地下水流动过程和空隙结构特征对溶质运移过程的影响。碳酸盐岩地区存在岩溶发育分布不均匀的特性,决定了岩溶场地的弥散系数在空间上具有不均匀性。笔者藉火电厂贮灰场工程实例的弥散试验,通过监测钻孔的示踪剂离子浓度数据,反算各方向上的有效孔隙,获得了强岩溶发育区不同岩溶发育方向的纵向横向弥散系数特征。
Dispersion coefficient is a parameter of the dispersion ability of porous media to a certain pollutant.It reflects the influence of groundwater flow process and pore structure characteristics on solute transport process in porous media macroscopically.The uneven distribution of karst development in carbonate rock area determines that the dispersion coefficient of karst site is uneven in space.Based on the dispersion test of ash storage site in thermal power plant,by monitoring the tracer ion concentration data of boreholes and calculating the effective pore in all directions,the characteristics of vertical and horizontal dispersion coefficients in different directions of karst development in strong karst development areas are obtained.
作者
李正顺
吴小杰
LI Zhengshun;WU Xiaojie(China Energy Engineering Group Guangxi Electric Power Design Institute Co.,Ltd.,Nanning,Guangxi,530007)
出处
《红水河》
2019年第1期63-65,共3页
Hongshui River
关键词
岩溶地形
弥散系数
孔隙度
示踪剂
karst topography
dispersion coefficient
porosity
tracer
