Moisture spreading in a multi-layer hydraulic sealing system (HTV-1)
- 作者：Franz Kö ; niger ; Katja Emmerich ; Gerhard Kemper ; Matthias Gruner ; Wolfgang Gaβ ; ner ; Rolf Nü ; esch ; Rainer Schuhmann
- 关键词：Brine ; Hydraulic ; Moisture ; Sealing ; Shaft ; Time domain reflectometry ; Waste
- 刊名：Engineering Geology
- 出版年：2008
- 期刊代码：22_00137952
- 类别：civ
- 出版时间：21 April 2008
- 卷：98
- 期：1-2
- 页码：41-49
- 文件大小：1095 K
摘要
An important function of the multi-barrier system in the concept of geologic disposal of hazardous or radioactive waste is to limit water flow through the repository. The sealing system of geotechnical barriers consists commonly of bentonite with a very low hydraulic conductivity and high swelling and sorption capacity. Uniform wetting of the bentonite is a prerequisite of a high performance, but preferential flow paths partially inhibit the swelling process and increase the hydraulic conductivity of the material.