Open AccessQuick-clay landslide mitigation using potassium-chloride wells: Installation procedures and effects
Author(s) -
Tonje Eide Helle,
Marianne Kvennås,
O. V. Kirkevollen,
Bob Hamel,
Bjørn Kristian Fiskvik Bache,
Stein-Are Strand,
G. Svanø,
Anders Samstad Gylland,
Eigil Haugen,
Toril Wiig,
Atle Horn
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/710/1/012047
Subject(s) - lime , environmental science , terrain , landslide , cement , environmental engineering , mining engineering , waste management , geology , geotechnical engineering , engineering , materials science , metallurgy , paleontology , ecology , biology
Mitigation actions related to quick-clay slopes often induce undesirable changes to the terrain that may have negative impact on developed areas and local biodiversity. Soil improvement may prevent this. Lime-cement piling causes temporarily reduced slope stability and substantial climate-gas emissions. Less climate-gas emissions are associated to the production of potassium chloride (KCl). KCl improves the post-failure properties of quick clay so it renders not quick and may serve as an alternative to current landslide-mitigation. The mechanisms in this chemical process is well documented, but there exist no installation procedures for KCl wells, nor knowledge on cost/benefit or climate-gas emissions. This paper presents two installation procedures of KCl wells, and studies showing that the climate-gas emissions are far less than installing lime-cement piles. Further development of cost-effective installation procedures is needed to justify application of KCl wells in quick-clay areas.