AbstractAgricultural field operations of various levels of mechanization are heavily dependent on wheel tractors as a source of traction power. It is common practice to use the same tractor for different operational requirements. Hence the soil with different load bearing capacity is exposed to repeated compressive stress of the same magnitude. This results in the formation of a dense layer within the soil mass which is poor in hydraulic conductivity, aeration, and unfavorable for the growth of plants. It creates a cyclic effect of change in soil strength and increases in power requirements together with decreases in productivity year after year. This paper presents an experimental study of soil compaction as a result of multiple loading by the running device. It is valuable for present farming systems in determining the combined effects of load and number of passes so as to utilize the field power effectively with minimum compaction effect. In this work soil compaction was studied in the laboratory using soil bin facilities. An analysis was made based on investigations on experimental results of surface and sub-surface deformation, specific volume and compaction index (coefficient) which characterize soil compaction phenomena. The results showed that the number of passes and the load as independent variables significantly affected the compaction capacity of the soil. According to the experimental results, the first three passes of a loaded wheel are critical and the intensity of soil compaction within a depth of 120 mm is serious.
Soil compaction by multiple passes of a rigid wheel relevant for optimization of traffic
Journal of Terramechanics ; 26 , 2 ; 139-148
1989-01-01
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Soil compaction due to heavy agricultural wheel traffic
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