The Study of the Destruction Process of Frozen and Thawing Soils Exposed to the Skidding System
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2020, Vol 17, Issue 2
Abstract
Wood logging in the forests of the cryolithozone is growing more urgent for the Russian Federation due to the depletion of available reserves of mature commercial forests in southern and Central Siberia, the Republic of Buryatia, and Khabarovsk Krai, while the development of woodworking enterprises in the Far Eastern Federal District. During the operation of modern forest machines, for instance wheeled forwarders, the issues of their efficiency, first of all, mobility and technological productivity in the specific production and geotechnical conditions are now becoming ever more relevant. These circumstances together with the necessity to minimize the anthropogenic load on the environment put forward the problem of optimizing the number of passes of the skidding system by one run into the most pressing ones. Special conditions for the operation of skidding systems take place in logging operations on frozen and thawing soils. In the first case, there is a sufficiently large volume of ice in the soil massif. The ice has a great impact on increasing the bearing capacity of the soil under the influence of the initial vertical load of the skidding system. In the second case, frozen soil is oversaturated with water when thawing; therefore, the natural bonds between the solid particles grow week, and the physical and mechanical properties of the soil lose their original values. The forwarder forms a rut in the immediate area of contact of the wheel with the soil. The larger the size of the area, the higher the force transferred to the soil for implementation of the necessary traction. We have developed the mathematical model of calculation of parameters of the destruction process of the thawing soil massif on the border with the permafrost zone. The model allows to make an assessment of hypothetical values of depth of the formed rut including engineering capabilities of forwarders and their maneuvering in the work environment at the design stage.
Authors and Affiliations
S. E. Rudov, V. Ya. Shapiro, I. V. Grigorev, O. A. Kunitskaya, O. I. Grigoreva
Keywords
Related Articles
- EP ID EP683271
- DOI 10.37482/0536-1036-2020-2-101-117
- Views 299
- Downloads 0
Climate Change and Its Impact on Adaptation and Intraspecific Variability of Conifer Species of the European North of Russia
Current climate change is affecting forests and requires a specific forest management strategy. The review aims to analyze the impact of observed and projected climate change on the tree species adaptation response with...
Variability in Elemental Composition of Conifer Tree Rings
Distribution of chemical elements in tree rings bears important information on various biogeochemical processes. In order to achieve a reliable interpretation of the information, it is necessary to know the degree of var...
Features of Designing Wooden Bridges of the Forest Complex
The supply of the national economy with forest resources is directly related to transport accessibility, the condition and development of the road network of forest-rich territories. Construction requirements for year-ro...
Post-Fire Changes in Light Coniferous Forests of the Bashkir Nature Reserve
The assessment of the impact of fires on forest plantations in order to obtain information on the post-pyrogenic development of forest components over time is becoming increasingly relevant due to the increasing number o...
Mathematical Modeling of the Bark Drying Process
Currently, a large amount of wood bark waste is generated at the timber processing enterprises of the Russian Federation, which is not widely used in industry and has a negative impact on the environment. One of the feas...