Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydrologic Properties of Final Cover Soils
A database of hydrologic properties of cover soils is described that includes data from tests conducted on 325 intact block samples collected from 10 final cover test sections. For each test section, groups were created of soils having similar texture. The symbolic designations in the Unified Soil Classification System ranged from GC to CH, the saturated hydraulic conductivity (Ks) ranged between 5.1x10-9 and 2.2x10-2 cm/s, van Genuchten's α ranged between 0.00023 and 0.83k Pa-1, and van Genuchten's n ranged between 1.16 and 7.22. Goodness-of-fit tests showed that spatial variability of Ks and α can be described by the lognormal distribution, whereas n can be described by the normal distribution. The coefficient of variation varies between 0.02-0.30 for lnKs, 0.01-0.46 for α, and 0.01-0.41 for n. Saturated hydraulic conductivity is inversely related to fines content, 2-μm clay content, plasticity index (PI), compaction water content relative to optimum water content (w-wo), and initial saturation (Si). The α parameter is correlated directly to Ks, and is inversely related to 2-μm clay content, PI, and organic matter content (OM). The n parameter is inversely related to fines content and clay content and directly related to sand content, although each of these trends is captured in the trend defined by fines content. No effect of compaction condition was evident in the α and n data.
Hydrologic Properties of Final Cover Soils
A database of hydrologic properties of cover soils is described that includes data from tests conducted on 325 intact block samples collected from 10 final cover test sections. For each test section, groups were created of soils having similar texture. The symbolic designations in the Unified Soil Classification System ranged from GC to CH, the saturated hydraulic conductivity (Ks) ranged between 5.1x10-9 and 2.2x10-2 cm/s, van Genuchten's α ranged between 0.00023 and 0.83k Pa-1, and van Genuchten's n ranged between 1.16 and 7.22. Goodness-of-fit tests showed that spatial variability of Ks and α can be described by the lognormal distribution, whereas n can be described by the normal distribution. The coefficient of variation varies between 0.02-0.30 for lnKs, 0.01-0.46 for α, and 0.01-0.41 for n. Saturated hydraulic conductivity is inversely related to fines content, 2-μm clay content, plasticity index (PI), compaction water content relative to optimum water content (w-wo), and initial saturation (Si). The α parameter is correlated directly to Ks, and is inversely related to 2-μm clay content, PI, and organic matter content (OM). The n parameter is inversely related to fines content and clay content and directly related to sand content, although each of these trends is captured in the trend defined by fines content. No effect of compaction condition was evident in the α and n data.
Hydrologic Properties of Final Cover Soils
Benson, Craig H. (Autor:in) / Gurdal, Tayfun (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
04.03.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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