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The military armored tracked vehicle of troops transport "M113 BR" used in the experiment: front view (a), side view (b), load compartment (c), and wheeled track (d).
Source publication
Soil physical properties can be changed after vehicle traffic, especially by heavy military tracked vehicles. The Santa Maria military Instruction Field, where the experiment was carried out, is currently the most used area for armored tracked vehicles training in Brazil, with the M113 BR being the main equipment. The aim of this study was to deter...
Context in source publication
Context 1
... M113 BR is 2.53 m high, 2.67 m wide, and 4.86 m long. It moves on two 0.38 m wide and 3.05 m long tracks, fitted with a 0.15 × 0.10 m rubber pad (Figure 2). At the time of traffic, the M113 BR carried only two crew members, resulting in a total mass of 10,15 Mg and a static ground pressure of 44 kPa, which is only a reference value, considering that the pressure applied to the ground (dynamic pressure) was not monitored and the track pads' surface exerts higher pressure. ...
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Citations
... The traffic of those vehicles over the last 15 years has been intense. In the experimental area, the intense vehicle traffic was recorded in the The morphological description of the soil and landscape was performed according to the Manual of Description and Sampling of Soil in the Field (Santos et al. 2015), obtained from the Barbosa et al. (2020). The Au horizon has a layer of burnt vegetation residues and the Ap horizon corresponds to the effects of the annual plow due to agricultural use prior to the installation of the military instruction field. ...
Heavy vehicle traffic, especially large military combat vehicles, causes soil compaction, which reduces their physical quality and increases their susceptibility to soil erosion. A large contingent of the Brazilian Army conducts combat vehicle training at the Santa Maria Instruction Field (CISM), which has been caused degradation of the ecosystem. The aim of this study was to evaluate the effect of combat vehicle Leopard 1A5BR traffic on soil physical properties in an Abruptic Alisol with military vehicle traffic history. Two types of maneuvers were evaluated: (i) straight traffic with 0, 1 and 3 passes, and (ii) pivoting maneuver with 0, 1 and 2 pivots. Soil morphology, particle size distribution and organic carbon content were analyzed in the 0.00-0.10 and 0.20-0.30 m layers. Bulk density, total porosity, macroporosity, microporosity, saturated soil hydraulic conductivity, penetration resistance and preconsolidation pressure were evaluated in the 0.00-0.04, 0.10-0.14 and 0.20-0.24 m layers. The preconsolidation pressure of the surface layer indicated that the soil surface layer is susceptible to traffic compaction of Leopard 1A5BR. Only one pass (straight traffic) and one pivoting maneuver were sufficient to increase soil penetration resistance and bulk density and reduce the total porosity and macroporosity in the surface layer (0.00-0.04 m).
... The descrease in Ks with the increase in soil depth probably is caused by the lower biological activity in deeper soil layers. Although these descrese in Ks with increasing in soil depth, lower Ks than observed in this study are commonly for Alisols (BARBOSA et al., 2020). ...
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