Justification of Ballast Tank Parameters of a Mоbile Berth for Timber Transshipment
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2022, Vol 11, Issue 1
Abstract
The use of a mobile small-sized berth, the design of which was proposed by the authors in the previous paper, significantly increases capacity and reduces the cost of timber transshipment. When towing the berth over large distances, its ballast tanks are empty, which ensures that draft and water resistance to movement are minimized. At the point of operation the leveling ballast tank is filled with water until the top surface of the berth is leveled. In this position, the berth is moved locally in case of significant changes of the water level in the reservoir. Due to manufacturability and minimization of the volume of the leveling tank, it is designed as a part of the inner space at the berth stern, separated by a vertical wall. The permutation ballast tank is filled with water to submerge the berth until it leans on the leveled coastal slope. Water is pumped out of the tank to make the berth float during its local permutations. In this case, a significant trim should not be allowed. The lower point of the longitudinal section of the permutation tank was provided at the intersection of the berth bottom and the vertical, which bisects the waterline upon completion of the alignment. Algorithms have been developed for determining the position of the vertical wall of the leveling tank and the position and shape of the walls of the permutation tank. The distance of the vertical wall from the lower point of the berth and the coordinates of the points of the profiles of the left curved and right walls of the permutation tank were determined for a conditional berth of unit height and width. The coordinates were used to derive empirical dependencies. The values of the calculated metacentric heights verified the longitudinal and transverse stability of the berth in all positions. Experimental validation on a physical model of the berth confirmed the correctness of the results. Transition to the correct dimensions of the longitudinal profile from the conditional is assumed with the proportions retained. For citation: Posypanov S.V., Chuprakov V.O. Justification of Ballast Tank Parameters of a Mobile Berth for Timber Transshipment. Lesnoy Zhurnal [Russian Forestry Journal], 2022, no. 1, pp. 143–154. DOI: 10.37482/0536-1036-2022-1-143-154
Authors and Affiliations
Sergey V. Posypanov, Vyacheslav O. Chuprakov
Keywords
Related Articles
- EP ID EP700467
- DOI 10.37482/0536-1036-2022-1-143-154
- Views 85
- Downloads 0
The Current State of Forest Breeding in the Russian Federation: The Trend of Recent Decades
The work is devoted to the study of the trends existing in forest breeding in Russia over the recent years, their comparison with similar achievements in foreign countries with close climatic conditions, and the assessme...
Daily Pine Growth on Highmoor Peat Soil under the Influence of Fertilizers
The research aims at identifying the effect of nitrogen on daily growth and intensity of physiological processes in pine trees. The research was carried out in 2017–2018 in the north taiga zone of the Arkhangelsk region....
The Use of Multivariate Data Analysis in Assessing the State of Advance and After-Regeneration of Pine Forests after Selective Felling
A research of qualitative and quantitative characteristics of regeneration after the first selective felling with an intensity of 20 to 50 % in pine forests of the northern part of the Krasnoyarsk forest-steppe has been...
Determination of the Mathematical Dependence of the Black Liquor Density on the Dry Matter Content (High Yield Softwood Pulp)
A modern evaporator station is an energy-saving production of evaporated liquor with high dry matter content for ensuring the minimum SO2 emissions from the soda recovery boiler. Such stations are equipped with Falling F...
The Use of Lighting of Various Spectral Ranges for Clonal Micropropagation of Forest Berry Plants
Creation of plantations of the most popular species of forest berry plants with high nutritional and medicinal value is advisable in connection with the reduction of such natural resources and the increased demand for be...