Browsing by Author "Jayawardena, CL"

Analysis of beachrock samples along Southern and Western coasts of Sri Lanka by spectroscopic methods

Edirisooriya, KVUI; Thilakarathna, MADP; Vijitha, T; Dassanayake, ABN; Jayawardena, CL [Conference-Full-text]

Beachrocks are sedimentary structures commonly observed where there is warm sea water in tropical and subtropical regions as a result of cementation by CaCCb of coastal sediments in the tidal zone. Comprehensive studies ...

Analysis of physical and mineralogical properties of aggregate on strength and durability of asphalt concrete

Lakshan, LPS; De Silva, SHSN; Kapilaratne, RDMCLB; Chaminda, SP; Jayawardena, CL [Conference-Full-text]

Asphalt is made by mixing aggregates, filler and binder materials together according to pre-determined ratios. Out of the total asphalt weight, 94% to 95% consists of aggregate. It is not surprising that the performance ...

Applicability of a neural network model for forecasting ground vibrations in opencast mining

Dassanayake, SM; Dushyantha, NP; Jayawardena, CL [Conference-Full-text]

Ground vibration and air-blast over pressure are two significant undesirables, among many environmental risks, in open-pit mining . Gaining control over the ground vibrations generated by rock blasts had been difficult ...

Applicability of tunnel muck as an alternative for fine aggregates in cement concrete

Ariyasena, HHS; Sampath, BA; Wickramasooriya, MDJP [Conference-Full-text]

One of the recent applications of Tunnel boring Machines (TBM) in Sri Lanka is Uma Oya Multipurpose Development Project (UOMDP). During rainy periods, the washed tunnel muck particles sediment in low agricultural lands ...

Application of GPR to identify carbonate rock cavities related to ground subsidence in Matale, Sri Lanka

De Silva, MSTL; Chiyamvarnan, K; Niroshini, R; Abeysinghe, AMKB; Jayawardena, CL [Conference-Full-text]

Cavity formation within the rocks result in ground subsidence in the regions where carbonate rocks are predominantly present. Identification of ground subsidence potential areas and the probability of such incidents is a ...

Appraisal of electrode configuration characteristics in resistivity surveying

Kankanamge, BU; Chathuranga, SMS; Ruwanika, ILD; Palamure, PK; Abeysinghe, AMKB; Samaradivakara, GVI; Jayawardena, CL [Conference-Full-text]

Non-destructive subsurface exploration methods could reveal subterranean characteristics with minimal consumption of time and resources. However, validity of such interpretations could vary depending on the appropriate ...

Assessment of rehabilitation options for environmental impacts of abandoned mines

Kavirathne, SR; Udayanga, RI; Keerthi, T; Gunawardana, ADTJ; Chaminda, SP; Jayawardena, CL [Conference-Full-text]

The quarries which are abandoned ceasing operations without a proper closure plan cause negative impacts on the environment and also risk for the health and safety of society and the economy. This research focused on the ...

Assessment of seasonal impacts on groundwater quantity and quality in upstream of Malwathu Oya Basin

Madhushankha, JML; Madhuwan, ARB; Menan, P; Chaminda, SP; Abeysinghe, AMKB; Jayawardena, CL [Conference Full-text]

Malwathu Oya Basin which covers 2350km2 located in Anuradhapura district is considerably populated and the safety and the available quantity of water is crucial for the people. Water samples were collected from selected ...

Assessment of the effect of Aruwakkalu waste dump on surrounding water resources

Chirantha, D; Herath, HMDK; Chandrapala, HMNI; Chaminda, SP; Dassanayake, ABN; Jayawardena, CL [Conference-Full-text]

In developing countries like Sri Lanka, waste management is a vital necessity. Solid waste dumps play a major role in handling waste in most countries. These solid waste dumps can cause severe environmental pollution via ...

Bibliometric analysis of grey literature on the Bolgoda ecosystem with special reference to theses and dissertations

Jayawardena, CL; Seneviratne, TM [Article-Abstract]

Conservation of ecosystems such as Bolgoda is crucial in achieving sustainable development goal 11 – Make cities inclusive, safe, resilient, and sustainable. To conserve such valuable ecosystems, the importance of ...

Characterisation of coal fly ash for potential wastewater treatment opportunities

Pannilarathne, IE; Sandaruwan, MGL; Mathissan, P; Jayawardena, CL; Fernando, WAM [Conference-Full-text]

Lakvijaya coal power plant, which is in Norochcholai, Puttalam District, Sri Lanka, is the largest coal power plant in Sri Lanka. It annually produces about 150,000 tonnes of fly ash (FA) as waste, and the management of ...

Characterisation of sediment deposition of Bolgoda lake using acoustic and sampling methods

Jayasooriya, SPND; Fernando, SFRS; Priyantha, HNL; Vijitha, AVP; Premasiri, HMR; Samaradivakara, GVI [Conference-Full-text]

Bolgoda Lake is one of the main water resources in the western province, which has two major basins explained as Bolgoda south and north lakes. Lake sedimentation is a serious dilemma for water scarcity, productivity, ...

Comparative analysis of water hyacinth dynamics in North Bolgoda Lake, Sri Lanka: a classification based on high-resolution aerial imagery and satellite-imagery

Dawalagala, HS; Radampola, A; Gowsigan, PT; Chaminda, SP; Dassanayake, SM; Jayawardena, CL [Conference-Abstract]

Water hyacinth (WH) is an invasive aquatic plant that has established its presence in tropical and subtropical regions around the globe. Its widespread existence has resulted in societal, economic, and ecological impacts ...

Correlations between durability, mineralogy and strength properties of limestone

Senarathna, TMB; Janith, SHMPK; Dassanayake, ABN; Chaminda, SP; Jayawardena, CL [Conference-Full-text]

Durability is used to depict the obstruction of rock to weathering and the pace of events of such changes. Wetting and drying cycles cause evaluation of physical changes and slaking behaviour of rocks, and that can be ...

Critical evaluation of industrial mineral mining methods in Sri Lanka

Jeewandara, JTP; Senarathna, MKT; Wickramarathna, CH; Sirisena, KMW; Hemalal, PVA; Lasantha, MML; Dharmaratne, PGR; Chaminda, SP; Jayawardena, CL [Conference-Full-text]

Sri Lanka is rich in industrial minerals, including graphite, apatite, ilmenite, rutile, quartz, feldspar, kaolin, apatite, garnet sand, mica, calcite, and dolomite. Even though lots of mining methods are used to extract ...

Decision tree regression approach for detecting spatiotemporal changes of vegetation cover in surface water bodies

Dassanayake, SM; Jayawardena, CL; Dissanayake, DMDOK [Conference-Abstract]

Surface water bodies in urban areas, such as Bolgoda lake, show complex vegetation dynamics, typically noticeable by the fluctuating vegetation cover throughout the year. Primary factors governing these fluctuations ...

Determination of depleted rock volume in open cast mines using photogrammetric techniques for the purpose of royalty calculation

Ariyarathne, RCDK; Samaraweera, SACV; Maduwantha, LSE; Insaf, MJM; Hemalal, PVA; Illankoon, IMTN; Dharmaratne, PGR; Chaminda, SP; Lasantha, MML [Conference-Full-text]

In Sri Lanka, Geological Survey and Mines Bureau (GSMB) imposed royalty levy for aggregate production volume using an equation (indirect method) which utilises the quantity of explosives for the calculation. Since the ...

Determining the characteristics of the calcite intrusions in the southern part of eppawala deposit and its applicability for the industries

Peter, GKMR; Sivaruban, S; Jayathilaka, GMANGNMB; Lasantha, MML; Rathnayake, NP; Hemalal, PVA; Batapola, BDNM [Conference-Full-text]

Eppawala is the only phosphate deposit that is currently being mined in Sri Lanka and is composed of mainly two parts northern and southern. The ongoing phosphate mining process in the southern part has resulted in the ...

Determining the Invasive Plant Dynamics in Bolgoda Lake Using Open-source Data

Kannangara, KATT; Shoukie, MB; Nayomi, MPA; Dassanayake, SM; Dassanyake, ABN; Jayawardena, CL [Conference-Abstract]

Identifying invasive plants (IP) and monitoring their dynamics is essential to minimize potential adverse effects on natural resources. Remote sensing (RS) could effectively cater to such requirements by acquiring data in ...

Developing a reliable monitoring framework to detect environmental changes near mining areas : a remote sensing approach

Thiruchittampalam, S; Jayawardena, CL [Article-Full-text]

Agriculture and mining are two key industries that govern the growth of the socio-economic systems of a country. Detrimental effects on the socio-environment during mining activities are unavoidable. Hence, a proper ...

Browsing by Author "Jayawardena, CL"

Browsing by Author "Jayawardena, CL"

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