Browsing by Author "Samaradivakara, GVI"

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 ground-borne vibrations due to piling operations and risk zonation

De Seram, PSPSW; Indika, LGV; Athapattu, AMHSM; Samaradivakara, GVI; Hemalal, PVA [Conference-Full-text]

Due to paucity of land for construction and the highest valuableness of lands in urban areas, construction activities are broadly carried out neighboring to existing buildings. Pile driving is the most common foundation ...

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 ...

Analysis of Sri Lankan petroleum fiscal system - petroleum resources agreement - 2007

Jayamal, KC; Fernando, CR; Niroshan, WKD; Wickrama, MADMG [Conference-Full-text]

Economic structure of the World Oil and Gas Industry significantly differs from other industries due to the greater risk and uncertainties associated with the industry. Petroleum fiscal regime of a county defines the set ...

Analyzing the seasonal variation of groundwater characteristics in the Attanagalu Oya basin

Athukorala, DRM; Kohilan, C; Danushka, U; Jayarathna, WHDP; Chaminda, SP; Dassanayake, ABN; Hewavidana, SM [Conference-Full-text]

Gampaha district which has the second largest population in the country consists of many industrial establishments and residential areas. Attanagalu Oya Basin which almost entirely the Gampaha district is a major hydrologic ...

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 ground penetration radar (GPR) technique to optimize soil Nail Wall designs

Lasan, HLI; Weerasekara, MN; Prashanth, S; Abeysinghe, AMKB; Premasiri, HMR; Samaradivakara, GVI [Conference-Full-text]

Soil nailing is used to stabilize existing natural slopes or excavations using soil reinforcement technique. Due to lack of information on ground profiles and thickness of soil layers, the required soil nail lengths cannot ...

Applicability of pre-heating techniques for recovery of garnet from garnet biotite gneiss

Jayakodi, JDSU; Weliwita, BY; Nishanthan, SS; Samaradivakara, GVI; Abeysinghe, AMKB; Rohitha, LPS; Vijitha, AVP [Conference-Full-text]

In mineral processing industry, the highest energy is consumed by crushing and grinding operations. However, if we can initiate micro cracks in the hard rock pieces in advance, we should be able to reduce the crushing ...

Applicability of pre-heating techniques for recovery of minerals from rocks

Dasanayake, RB; Jatheesan, N; Nissanka, NACM; Samaradivakara, GVI; Abeysinghe, AMKB; Rohitha, LPS [Conference-Full-text]

In mineral processing industry, liberating of minerals is the most important involvement because it can enhance the purity of the mineral. However, if we can initiate micro-cracks in rock pieces in advance to these ...

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 ...

Application of hydrodynamics to assess coastal morphology to the north of Kelani River, Sri Lanka

Ishankha, WCA; Kahawala, KKHB; Sandushan, JAC; Hewavidana, SM; Silva, KBA; Ratnayake, NP [Conference-Full-text]

Studies on hydrodynamics are important since the hydrodynamic processes highly contribute to sediment transportation in the coastal regions. Erosion in Uswetakeiyawa coastal region of Sri Lanka has been a significant ...

Application of non-destructive methods for testing of index properties of gneissic rocks in large-scale geotechnical investigations

Samaradivakara, GVI [Thesis-Abstract]

There is an abundance of gneissic rock formations found in Sri Lanka. Gneiss is a banded rock with fairly continuos segregation of different minerals. Foundations of most of the large-scale civil engineering structures are ...

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 environmental impacts resulting from ground vibrations due to piling activities and railway transport

Piyarathna, HDAM; Godagama, GWADC; Maduranga, THT; Hemalal, PVA; Samaradivakara, GVI; Samaradivakara, GVI; Dharmaratne, PGR [Conference-Full-text]

With the development of the country's economy, industrial activities close to urbanized areas have inceased tremendously. These activities are sources of ground vibrations impacting on human life. Resulting annoyance ...

Assessment of sedimentation capacity in Rantambe Reservoir using acoustic methods

Yasanga, SK; Udara, HMD; Dilantha, MGA; Rupasinghe, MGAR; Premasiri, HMR; Ratnayake, NP [Conference-Full-text]

Reservoir sedimentation is a major problem for dam safety, water security and productivity. So, regular monitoring and assessment of sedimentation rate performances are paramount. Rantambe reservoir with an initial gross ...

Beachrock identification using geology and geophysical approaches in Indonesia

Daryono, LR; Nakashima, K; Kawasaki, S; Titisari, AD; Barianto, DH; Suyanto, I; Rahmadi, A [Conference-Full-text]

A unique carbonate rock developed naturally as a natural barrier presumably appropriate for advanced marine ecosystems including microbiotas in shorelines. A great deal of progress has been made in recent years to ...

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, ...

Determination of uniaxial compressive strength using point load index of high grade metamorphic rocks from western Sri Lanka

Thushanthan, K; Udayantha, BVM; Chathuranga, SAKS; Dissanayaka, VAKA; Karunananthasivam, L; Jayasekara, JMEPK; Puswawela, UGA; Samaradivakara, GVI [Conference-Full-text]

This research is focused on finding the correlation of unconfined compressive strength (UCS) with Point load Index (PLI) of gneissic rocks, and to propose proper correlating value, based on a study carried out for Sri ...

Development of a genetic algorithm (GA) code in python language for fracture porosity analysis

Munasinghe, PT; Giao, PH [Conference-Full-text]

Machine Learning (ML) techniques are more and more applied in hydrocarbon exploration and production (E&P) in general, and in petrophysics in particular. In this research, a Genetic Algorithm (GA) code was developed in ...

Durability of rocks under tropical conditions

Samaradivakara, GVI [Thesis-Abstract]

Sri Lanka has a basement rock formation of metamorphic origin that the majority is gneissic type, which is intensively used in many of the civil engineering constructions. In addition, foundations of most of the important ...

Browsing by Author "Samaradivakara, GVI"

Browsing by Author "Samaradivakara, GVI"

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