dc.contributor.advisor |
Kulathilaka SAS |
|
dc.contributor.author |
Thilakarathna PADT |
|
dc.date.accessioned |
2022 |
|
dc.date.available |
2022 |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Thilakarathna P.A.D.T. (2022). Effect of rectification measures in kahagolla landside - comparison of monitoring and analytical data [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.uom.lk/handle/123/20867 |
|
dc.identifier.uri |
http://dl.lib.uom.lk/handle/123/20867 |
|
dc.description.abstract |
This research paper focuses on creep movements of rainfall-induced landslides with
their groundwater level fluctuation, to understand the pore water pressure development in
saturated/ unsaturated soil layers in relation to the mechanism of failure. A case study was
selected at Kahagolla Sri Lanka, which is a massive creep landslide initiated around 1957 and
triggering by prolonged rainfall events. The stabilization of the Kahagolla landslide was
carried out under the “Landslide Disaster Protection Project” implemented by the Government
of Sri Lanka with the support of Japan.
Detailed geotechnical investigation along with real-time monitoring data showed
mainly four slip surfaces along the landslide axis. The main reason for movement is discovered
as the rising of groundwater table and subsequent loss in the slip surface strength.
Two-dimensional analyses were carried out with several back analyses and adjusted
parameters according to real-time monitoring data. Limit equilibrium analysis coupled with a
seepage model was performed to confirm the actual conditions of the landslide occurrence.
Thereafter, effects of rectifications were also modeled to access the stability status of the
rectified landslide. The performance of the rectification measures was further examined with
critical design rainfalls and a threshold for the rectified landslide. The results show an
acceptable stabilization of terrain after the construction of counter measures. It can be
concluded that the final combination of rectifications has been succeeded in the stabilization
of this landslide and the above-mentioned approach is appropriate for use in the simulation of
deep-seated landslides. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
KAHAGOLLA LANDSLIDE |
en_US |
dc.subject |
DEEP SEATED FAILURE |
en_US |
dc.subject |
DRAINAGE WELLS |
en_US |
dc.subject |
BACK ANALYSIS |
en_US |
dc.subject |
RECTIFICATION MEASURES |
en_US |
dc.subject |
CIVIL ENGINEERING - Dissertation |
en_US |
dc.subject |
FOUNDATION ENGINEERING & EARTH RETAINING SYSTEMS - Dissertation |
en_US |
dc.title |
Effect of rectification measures in Kahagolla landside - comparison of monitoring and analytical data |
en_US |
dc.type |
Thesis-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.degree |
M.Eng. in Foundation Engineering and Earth Retaining Systems |
en_US |
dc.identifier.department |
Department of Civil Engineering |
en_US |
dc.date.accept |
2022 |
|
dc.identifier.accno |
TH4710 |
en_US |