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I am Jean Claude Nizeyimana, Master 1
Student.
This is a report of research we conducted in
Burundi for the purpose of data collection of my research topic which is a case
study located in Burundi my home country, “Slopes of Ntahangwa River Banks”,
river that crosses the Bujumbura city. I show below a view of upstream slopes,
there is a threat of slopes failurfor close housings.
The
research consisted of collection data namely geotechnical, meteorological and
surveying. The period allocated to the research was 16 days including 4 days of
flight for round trip.
During my stay in Burundi, Akagi Sensei
collaborated with Professor Masekanya Jean Pierre from the Faculty of
Engineering Sciences of the University of Burundi, therefore, I was receiving
guidance for conducting the research.
In order to get the slopes profiles,
surveying was done, topographic map and cross sections of the river were
obtained.
For geotechnics, we firstly made a site visit for identifying and spotting the sampling locations.
Then later, investigations on both banks were
undertaken namely penetrations test and sampling. Laboratory experiments were
performed on direct shear, permeability, grain size distribution,
consolidation, Atterberg limits and physical soils properties determination.
Meteorological data were collected at the
Geographical Institute of Burundi (IGEBU): watershed map, daily precipitations
heights and rainfall intensities.
Other informations on existing data of Ntahangwa
River were provided by Professor Jean Pierre.
We hope to enhance our research with obtained
data in order to analyse the stability of Ntahangwa slope and I expect to understanding
the source of problems that Burundian society is dealing with in Bujumbura in
terms of slopes failure and propose solutions and techniques that other
counties like Japan are doing in similar incidents by using numerical
investigations and real measurements data from Bujumbura.
I would not finish without thank Akagi Sensei
for the supervision and our research team members Okazaki san, Nishiyama san
and Toni san for their contribution.
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