摘要
西霞院工程上第三系地层成岩时间短,岩、土性质并存,是介于岩石与土之间的过渡性地层。该地层工程地质、水文地质性质特殊,其透水性跨越中等透水、弱透水、微透水、极微透水等多个透水等级,且透水性渐变特征明显。加之各类地层的分布规律性差和构造复杂,工程区形成了较为复杂的水文地质条件,在进行防渗设计时应予以重视。
Diagenetic time of upper Tertiary strata in Xixiayuan engineering is short, and the rock and soil exist at the same time,which is transitional strata between rock and soil. Its engineering geological and hydrogeologieal properties are very special and its permeability spans more than one grade including middle, weak, tiny and ultra fine permeability ,with obvious gradual change. Together with bad layout and complex structure of all kinds of strata, relative complicated hydrogeological condition developed in the engineering area, which should be attached importance to at the seepage control design stage.
出处
《资源环境与工程》
2009年第5期554-557,共4页
Resources Environment & Engineering
关键词
上第三系地层
地下水
渗透系数
承压水
upper Tertiary strata
groundwater
permeability coefficient
confined water
