Horizontal sub drainage system in landslide risk mitigation. A case study of Shikuruwe Village, Bududa District.
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Date
2025-04-14
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Uganda Christian University
Abstract
Bududa District in the eastern part of Uganda faces serious risks from
landslides to infrastructure and human populations. This study looked into
how horizontal drainage systems can be applied to reduce the risk of
landslides in Shikuruwe Village, Naposhi parish. The objectives of this study
include; determining the characteristics of the site, conducting a hydrological
survey of the area and designing a horizontal sub drainage system.
The soil properties that were determined include the soil density, cohesion,
angle of friction, shear stress and effective stress, liquid limit, soil structure.
The methodology was applied according to British Standards, and the tests
done included the atterberg limit tests, particle size distribution test,
specific gravity and the falling head permeability test, triaxial test under
unconsolidated undrained conditions and the direct shear box test under
consolidated drained conditions. Spatial analysis, hydrological data,
geological mapping, and field observations will also be used. Monitoring
groundwater levels, conducting field surveys, and sampling soil were used to
gather geological and hydrological data. Hydrological modeling and
Geographical Information System were also used to develop a horizontal sub
drainage system.
The design of the horizontal system involved the use of software like
GEOSTUDIO for slope analysis and slip surfaces, MODEFLOW for designing
optimal drain configuration.. The design included considerations like drain
spacing, drain length and drain configurations. The aim of the study was
design optimal drainage configuration to reduce the risk of landslides
happening.
Description
Undergraduate