Journal of Earth Resources Engineering
http://dl.lib.uom.lk/handle/123/18475
2024-03-28T18:04:11ZDeveloping a foundation design software “GEOSOFT”
http://dl.lib.uom.lk/handle/123/18488
Developing a foundation design software “GEOSOFT”
Puswewala, UGA; Delakshan, I; Girishanth, S; Sasokcmthcm, K; Sureshkumar, S; Thavasuthan, T; Vaseeharem, MD
This report presents the development of a Foundation Design Software System. The
preliminary objective of this project is to develop the correlation between soil profile
and allowable bearing capacity for any type of foundation design. In order to achieve
this target, the author decided to develop a software which can fulfill the requirements
of a Geotechnical Engineer.
2005-01-01T00:00:00ZWetland plants for waste- and storm-water runoff treatment: management considerations
http://dl.lib.uom.lk/handle/123/18485
Wetland plants for waste- and storm-water runoff treatment: management considerations
Karunaratne, S
Prediction of growth and nutrient dynamics of P. australis is critical in sustainable management of aquatic habitats and management of wastewater treatment facilities using reeds. Therefore, a mathematical model (Reed model) was developed and validated recently to simulate the growth and internal nutrient dynamics of any well-established, mono-specific freshwater stand of P. australis. The field study undertaken to investigate the ecology and best timing strategies of shoot harvesting, identified the seasonal changes of the quality of the rhizome reserves as essential for proper vegetation management. The simulated results of the present study showed that at the time of peak standing stock of minerals, shoots contain 40% and 22.5% of whole plant N and P, respectively. Further this showed the use of Phragmites in waste-water treatment allows removal of N more easily than P, because higher percentage of N is bound with the easily
removable shoot parts. Since the model simulates the seasonal variation of nutrient
contents in different organs, it enables one to plan the harvesting season of P. australis
to maximize the mineral-nutrient removal and also to estimate the nutrient amount that
can be removed via harvesting at a specific time.
2005-01-01T00:00:00ZDesigning of a vibrating sieve
http://dl.lib.uom.lk/handle/123/18484
Designing of a vibrating sieve
Fernando, WLW; Basnayake, BMV; Fernando, HAS; Rajapaksha, HMPB; Rodrigo, SAIJ; Theres Lathanky, J
This report presents the development of proto type of a Vibrating Sieve. The preliminary objective of this project is to design a prototype of a vibrating sieve to be used for clay refinery process, which can be easily maintained with available materials in the market and cost effective. Secondary objective of the project is to gather knowledge, practice and
experience on technology, equipment and methods available in the mechanical
designing activities in the workshop and develop skills and experience in team work spirit.
2005-01-01T00:00:00ZGeo-environmental assessment along southern and western coastal belt of Sri Lanka after the Indian ocean mega Tsunami
http://dl.lib.uom.lk/handle/123/18483
Geo-environmental assessment along southern and western coastal belt of Sri Lanka after the Indian ocean mega Tsunami
Premasiri, HMR; Ratnayake, NP; Abesingha, AMKB
Geo-environmental assessment after the recent mega tsunami, along the southern and western coastal belt indicates varying effects to the beach profile, mineral deposits, surface and ground water, and soil. The most significant effect was due to the beach erosion which had changed the beach profile creating deep water near the shore
allowing waves to break much further inland than usual triggering further coastal
erosion with the south western mcnsoon. Destruction of live corals, salinization of
drinking water and agricultural soils, water logging in abandoned inland coral pits
severely causing epidemic threats, are some of the other major geo-environmental issues
along this coastal region. Considerable amount of heavy minerals (from Beruwela
to Hambanthota) which are potential placer deposits of ilmanite, rutile, monazite,
zircon, and garnet has been removed from the coast line and deposited further inland in
a wide scatted area, thus, degrading this potential placer deposit. Immediate actions
have to be undertaken to rectify most of these environmental issues.
2005-01-01T00:00:00Z