A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Žemsiurbės „Watermaster Classic III“ darbo efektyvumo įvertinimas / ; Dredger's "Wattermaster Classic III" work efficiency rating.
This Master's thesis presents the analysis of the literature, the aim and tasks of researches, the methodology, results, analysis and conclusions of the research. It was found that the main drawbacks of dredges which are cleaning lakes in Lithuania are the liquid pulp pumped and its low transportation distance. The aim of this research is to evaluate the most commonly used dredges’ “Watermaster Classic III” suitability for cleaning lakes in Lithuania. The water depths in three sections cleaned in Mastis and Pakruojis lakes were determined by direct measurements, to identify the quantity of suspended particles in the water in Mastis lake (immediately after dredging) water samples were taken with bottle – bathometer and the efficiency of dredge was evaluated using volumetric method. After measuring water death the descriptive statistic was carried out using “Hydrotech“ and “Microsoft Excel” software. All researches were made by author itself. It was found that dredging part of the lake Mastis with “Watermaster Classic III” cleaning uniformity in separate sections was 8.1 to 10.2% while cleaning the part of lake Pakruojis with the dredge „3350MK“ uniformity was significantly lower (2,9 to 3,2 %). In 3.7 % operating consistency “Watermaster Classic III” performance at 433 m was 76 %. The quantity of suspended particles only the first day around the dredge was significantly higher than the background level – 10-20 m above it but later everywhere became equal to background level. It was set a fairly effective and high workday productivity coefficient of the dredge “Watermaster Classic III” which was even Ktd = 0.848, and for the season – Kts = 0.759. Conclusion – dredge “Watermaster Classic III” with the existing mode of movement during work is inappropriate for cleaning lakes in Lithuania.
Žemsiurbės „Watermaster Classic III“ darbo efektyvumo įvertinimas / ; Dredger's "Wattermaster Classic III" work efficiency rating.
This Master's thesis presents the analysis of the literature, the aim and tasks of researches, the methodology, results, analysis and conclusions of the research. It was found that the main drawbacks of dredges which are cleaning lakes in Lithuania are the liquid pulp pumped and its low transportation distance. The aim of this research is to evaluate the most commonly used dredges’ “Watermaster Classic III” suitability for cleaning lakes in Lithuania. The water depths in three sections cleaned in Mastis and Pakruojis lakes were determined by direct measurements, to identify the quantity of suspended particles in the water in Mastis lake (immediately after dredging) water samples were taken with bottle – bathometer and the efficiency of dredge was evaluated using volumetric method. After measuring water death the descriptive statistic was carried out using “Hydrotech“ and “Microsoft Excel” software. All researches were made by author itself. It was found that dredging part of the lake Mastis with “Watermaster Classic III” cleaning uniformity in separate sections was 8.1 to 10.2% while cleaning the part of lake Pakruojis with the dredge „3350MK“ uniformity was significantly lower (2,9 to 3,2 %). In 3.7 % operating consistency “Watermaster Classic III” performance at 433 m was 76 %. The quantity of suspended particles only the first day around the dredge was significantly higher than the background level – 10-20 m above it but later everywhere became equal to background level. It was set a fairly effective and high workday productivity coefficient of the dredge “Watermaster Classic III” which was even Ktd = 0.848, and for the season – Kts = 0.759. Conclusion – dredge “Watermaster Classic III” with the existing mode of movement during work is inappropriate for cleaning lakes in Lithuania.
Žemsiurbės „Watermaster Classic III“ darbo efektyvumo įvertinimas / ; Dredger's "Wattermaster Classic III" work efficiency rating.
Valančius, Lukas (author) / Sankauskienė, Tatjana
2013-01-01
Theses
Electronic Resource
Lithuanian , English
DDC:
500
| TIBKAT | 2003