Calculating the Groundwork Volume for the Construction of Logging Roads
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2022, Vol 16, Issue 4
Abstract
Organizational and engineering models provide a formalized description of the construction process, including a list of operations, their sequence, description of the relationship between the operations, and the features of the work technology. Network models have the most complete mathematical description. However, a number of authors in their works point to serious shortcomings inherent in the network modeling of construction flow. The network model allows displaying accurately enough only the relationship of specialized traffic flows when the object is divided into sections equal in size to interchangeable grips. Such schedules are quite effective in planning and operational management of road works in a short planning period (decade or month). The adequacy of the real construction representation is violated when the network model is enlarged for long-term planning of the flow. The currently developed so-called generalized network models achieve process combination and continuity by introducing links between the operations, characterized by temporal parameters assuming any values, including negative values. However, the complexity of the mathematical description of these models still prevents their use in solving optimization problems. The research aims at developing a mathematical model and an algorithm for calculating the operational control of the groundwork volume during the construction of logging roads. A model of a complex object flow is proposed, where the flow operation time has a discrete nature. This condition is realized in the model by dividing the planned operation period of a complex flow into equal time intervals – scheduling intervals. The below described model of complex road construction flow can be presented on the basis of the scheduling task classification scheme and the analysis of existing economic and mathematical models and methods. The scheduling model developed for the purpose of determining the optimal groundwork for the road construction elements is a deterministic (at the 1st stage), discrete in time, engineering model with variable speeds of operations.
Authors and Affiliations
Maksim V. Matsnev, Natalia G. Ponomareva, Oleg N. Tveritnev, Petr V. Tikhomirov, Dmitry M. Levushkin, Andrei N. Briukhovetskii
Keywords
Related Articles
- EP ID EP706819
- DOI 10.37482/0536-1036-2022-4-156-172
- Views 129
- Downloads 0
Intraspecific Diversity of Pinus sylvestris L. in Provenance Trials of the Central Russian Forest-Steppe Area
The provenance trials of Scots pine (Pinus sylvestris L.) in the Central Russian forest-steppe area were established by M.M. Veresen in 1959. They have become a natural laboratory for genetic and environmental research i...
Formation of Biologically Stable Protective Pine Forests by Improvement Thinning in Northern Kazakhstan
The article deals with the effect of thinning in a permanent trial plot (PTP). The objects of care were natural clean even-aged pine forests growing in arid conditions of the Kazakh Uplands (case study of the Burabay Nat...
The Content of Heavy Metals in Soils and Leaves of Silver Birch Plantations (Moscow)
The ecological condition of urban plantations is an urgent problem of our time. The condition of plantations and soils characterizes the ecological and sanitary condition of the environment. In the structure of the citie...
Characteristics of Melliferous Lands and Their Fire Hazard in the Jewish Autonomous Region
Beekeeping is an essential economy branch. Therefore, it is so important to study the conditions that affect its state. The Jewish Autonomous Region (JAR) is one of the most important melliferous regions of the Far East....
Influence of Chronic Ionizing Radiation on the Variability of Mitotic Activity of Pinus sylvestris L. Tissues
The development of nuclear power engineering will increase in the future, due to the continued likelihood of radionuclides entering the environment. The relevance of studying the genetic material of conifers as a reliabl...