Double-Ring Infiltrometer for <i>In-Situ</i>Permeability Determination of Dam Material

• 作者: Hans R?nnqvist
• 来源期刊: 工程(英文)(1947-3931)
• 学科: 医学
• 关键词: Double-Ring Infiltrometer DRI Hydraulic Conductivity PERMEABILITY Infiltration Rate Postglacial SILT Sand GLACIAL TILL
• 年，卷（期）: 2018,（6）
• 页码范围: 320-328
• 页数: 9页
• 分类号: R73

摘要

Three types of natural soils are studied in this paper: 1) a postglacial silt, 2) a glacial till, and 3) a postglacial sand. The former two are soils from embankment dam sites in Sweden, and the latter is a soil from a natural deposit situated in the Swedish east coastal region. In situ Double-ring infiltrometer (DRI) tests are compared with laboratory constant-head permeability determinations. This study shows that the DRI tests conducted on sandy-silty soils are within sufficient range to the laboratory results, to suggest that in situ near-saturated infiltration capacity may be used as a field estimate of hydraulic conductivity (permeability) for this range of soils. In situ infiltrometer testing may be the better alternative when there is difficulty in achieving representative field conditions in a laboratory setting, e.g., for widely graded soils such as glacial tills.