A critical review of laboratory and in-situ hydraulic conductivity measurements for the Boom Clay in Belgium

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A critical review of laboratory and in-situ hydraulic conductivity measurements for the Boom Clay in Belgium. / Yu, Li; Rogiers, Bart; Gedeon, Matej; Marivoet, Jan; De Craen, Mieke; Mallants, Dirk.

In: Applied Clay Science, Vol. 75-76, 05.2013, p. 1-12.

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@article{f0c60d51e53c40fd9931145a468dd5db,
title = "A critical review of laboratory and in-situ hydraulic conductivity measurements for the Boom Clay in Belgium",
abstract = "Hydraulic conductivities of Boom Clay measured through various testing techniques in the laboratory, exhibit similar K values in the order of 10− 12 m/s. Spatial analysis at the Mol site reveals a typical profile with a very homogenous 61-m thick central part, i.e. the so-called Putte and Terhagen Members, which is also the least permeable part of the Boom Clay. The geometric mean of the vertical (Kv) and horizontal (Kh) hydraulic conductivities for the Putte and Terhagen Members at the Mol site are 1.7 × 10− 12 and 4.4 × 10− 12 m/s, respectively, with a vertical anisotropy Kh/Kv of about 2.5. A regional analysis of vertical K variability of the Boom Clay in the northeast of Belgium based on test results from five boreholes shows an increase in hydraulic conductivity from the east towards the west. Statistical analyses indicate that the effect of the samples' stratigraphic position on hydraulic conductivity is strongly related to different grain-size characteristics. However, a general K–grain-size model does not explain the geographical differences in K values satisfactorily. The regional variation in K could be attributed in part to porosity, which in turn is related to the burial depth of the clay.",
keywords = "Geological disposal of radioactive waste, Low permeable clay, Hydraulic conductivity, Laboratory/in situ measurements, Grain-size",
author = "Li Yu and Bart Rogiers and Matej Gedeon and Jan Marivoet and {De Craen}, Mieke and Dirk Mallants",
note = "Score = 10",
year = "2013",
month = may,
doi = "10.1016/j.clay.2013.02.018",
language = "English",
volume = "75-76",
pages = "1--12",
journal = "Applied Clay Science",
issn = "0169-1317",
publisher = "Elsevier",

}

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TY - JOUR

T1 - A critical review of laboratory and in-situ hydraulic conductivity measurements for the Boom Clay in Belgium

AU - Yu, Li

AU - Rogiers, Bart

AU - Gedeon, Matej

AU - Marivoet, Jan

AU - De Craen, Mieke

AU - Mallants, Dirk

N1 - Score = 10

PY - 2013/5

Y1 - 2013/5

N2 - Hydraulic conductivities of Boom Clay measured through various testing techniques in the laboratory, exhibit similar K values in the order of 10− 12 m/s. Spatial analysis at the Mol site reveals a typical profile with a very homogenous 61-m thick central part, i.e. the so-called Putte and Terhagen Members, which is also the least permeable part of the Boom Clay. The geometric mean of the vertical (Kv) and horizontal (Kh) hydraulic conductivities for the Putte and Terhagen Members at the Mol site are 1.7 × 10− 12 and 4.4 × 10− 12 m/s, respectively, with a vertical anisotropy Kh/Kv of about 2.5. A regional analysis of vertical K variability of the Boom Clay in the northeast of Belgium based on test results from five boreholes shows an increase in hydraulic conductivity from the east towards the west. Statistical analyses indicate that the effect of the samples' stratigraphic position on hydraulic conductivity is strongly related to different grain-size characteristics. However, a general K–grain-size model does not explain the geographical differences in K values satisfactorily. The regional variation in K could be attributed in part to porosity, which in turn is related to the burial depth of the clay.

AB - Hydraulic conductivities of Boom Clay measured through various testing techniques in the laboratory, exhibit similar K values in the order of 10− 12 m/s. Spatial analysis at the Mol site reveals a typical profile with a very homogenous 61-m thick central part, i.e. the so-called Putte and Terhagen Members, which is also the least permeable part of the Boom Clay. The geometric mean of the vertical (Kv) and horizontal (Kh) hydraulic conductivities for the Putte and Terhagen Members at the Mol site are 1.7 × 10− 12 and 4.4 × 10− 12 m/s, respectively, with a vertical anisotropy Kh/Kv of about 2.5. A regional analysis of vertical K variability of the Boom Clay in the northeast of Belgium based on test results from five boreholes shows an increase in hydraulic conductivity from the east towards the west. Statistical analyses indicate that the effect of the samples' stratigraphic position on hydraulic conductivity is strongly related to different grain-size characteristics. However, a general K–grain-size model does not explain the geographical differences in K values satisfactorily. The regional variation in K could be attributed in part to porosity, which in turn is related to the burial depth of the clay.

KW - Geological disposal of radioactive waste

KW - Low permeable clay

KW - Hydraulic conductivity

KW - Laboratory/in situ measurements

KW - Grain-size

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_128948

UR - http://knowledgecentre.sckcen.be/so2/bibref/10243

U2 - 10.1016/j.clay.2013.02.018

DO - 10.1016/j.clay.2013.02.018

M3 - Article

VL - 75-76

SP - 1

EP - 12

JO - Applied Clay Science

JF - Applied Clay Science

SN - 0169-1317

ER -

ID: 198186