Changes in soil structure following passage of a tracked heavy machine

Alaoui, Abdallah; Diserens, Etienne

doi:10.1016/j.geoderma.2011.04.023

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…At the column scale, the dispersivity of the water was generally correlated with pore structure characteristics (Hou, Hu, Qi, & Yang, 2018). Soil compaction often leads to changes in the volume, size, and continuity of soil pores and thus in the water transport of soils (Gayoso & Iroume, 1991;Alaoui & Diserens, 2011;Costa, Albuquerque, Costa, Warmling, & Magro, 2016). Frey, Niklaus, Kremer, Luescher, and Zimmermann (2011) found that compaction resulting from machine passes mainly decreased the macropore volume and lowered the hydraulic conductivities of the soil.…”

Section: Mechanism Of the Effects Of Compaction On Water Transportmentioning

confidence: 99%

Effects of rainfall intensity and compaction on water transport from opencast coal mine soils: An experimental study

Wang

2019

Hydrological Processes

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The use of heavy machinery during opencast coal mining can result in soil compaction. Severe soil compaction has a negative impact on the transport of water and gas in the soil. In addition, rainfall intensity has traditionally been related to soil surface sealing affecting water transport. To assess the effects of rainfall intensity and compaction on water infiltration and surface runoff in an opencast coal mining area, the disturbed soils from the Antaibao opencast mine in Shanxi Province, China, were collected. Four soil columns with different bulk densities (i.e., 1.4 g cm‐3, 1.5 g cm‐3, 1.6 g cm‐3, and 1.7 g cm‐3) were designed, and each column received water five times at rainfall intensities of 23.12, 28.91, 38.54, 57.81, and 115.62 mm hr‐1. The total volume of runoff, the time to start runoff, and the volumetric water contents at the depths of 5 cm, 15 cm, 25 cm, 35 cm, 45 cm, 55 cm, and 65 cm were measured. Under the same soil bulk density, high rainfall intensity reduced infiltration, increased surface runoff, and decreased the magnitude of change in the volumetric water contents at different depths. Under the same rainfall intensity, the soil column with a high bulk density showed relatively low water infiltration. Treatments 3 (1.6 g cm‐3) and 4 (1.7 g cm‐3) had very small changes in volumetric water contents of the profiles even under a lower rainfall intensity. Severe soil compaction was highly prone to surface runoff after rainfall. Engineering and revegetation measures are available to improve compacted soil quality in dumps. Our results provide a theoretical basis for the management of land reclamation in opencast coal mine areas.

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Section: Mechanism Of the Effects Of Compaction On Water Transportmentioning

confidence: 99%

Effects of rainfall intensity and compaction on water transport from opencast coal mine soils: An experimental study

Wang

2019

Hydrological Processes

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“…The soil with higher water content increases with the increase of shear rate, and it is easier to reach a stable state. The green curve in Figure 6 indicates the water content of 10 % soil, as the shear rate increases, its shear strength changes quickly to level and increases no longer [8][9][10][11].…”

Section: Janosi Shear Model For Classic Ground Soilmentioning

confidence: 99%

The Research on Shear Properties of Deformable Ground Soil under High-speed Driving Conditions

Lyu

Lou

2019

MATEC Web Conf.

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The classical ground soil shear mechanics model is difficult to predict the maneuverability of vehicles under high-speed driving conditions. The shear mechanical properties of soil under dynamic loading are the key factor to research on the ground attachment characteristics of vehicles under high-speed driving conditions. The relationship between the shear properties of the ground soil and the loading rate was analyzed by numerical simulation method. Based on the Janosi shear model of the ground soil, the loading rate and shear rate were supplemented to establish the applicable driving conditions for high-speed and heavy-duty vehicles. The ground soil shearing characteristics model provides a theoretical basis for researching on the vehicle's driving maneuverability under high-speed driving conditions.

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“…These soil properties include soil texture, pore size distribution, mineralogical composition, soil structure and aggregation, infiltration, bulk density ( ρ b ), and soil organic matter (SOM) content [ 3 , 4 ]. These properties can be influenced by various factors, including land uses [ 5 , 6 ], root biomass [ 7 ], soil fauna [ 8 ], shrinking and swelling properties of clay soils [ 9 ], freezing and thawing [ 10 , 11 ], and agricultural activities such as tillage [ 12 ], wheel-traffic compaction [ 13 ], and animal trampling [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Long-Term Semiarid Pasture Management on Soil Hydraulic and Thermal Properties

Kharel

Dhakal

Deb

et al. 2023

Plants

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Semiarid pasture management strategies can affect soil hydraulic and thermal properties that determine water fluxes and storage, and heat flow in unsaturated soils. We evaluated long-term (>10 years) perennial and annual semiarid pasture system effects on saturated hydraulic conductivity (ks), soil water retention curves (SWRCs), soil water thresholds (i.e., volumetric water content (θv) at saturation, field capacity (FC), and permanent wilting point (PWP); plant available water (PAW)), thermal conductivity (λ), and diffusivity (Dt) within the 0–20 cm soil depth. Forage systems included: Old World bluestem (Bothriochloa bladhii) + legumes (predominantly alfalfa (Medicago sativa)) (OWB-legume), native grass-mix (native), alfalfa + tall wheatgrass (Thinopyrum ponticum) (alfalfa-TW), and annual grass-mix (annual) pastures on a clay loam soil; and native, teff (Eragrostis tef), OWB-grazed, and OWB-ungrazed pastures on a sandy clay loam soil. The perennial OWB-legume and native pastures had increased soil organic matter (SOM) and reduced bulk density (ρb), improving ks, soil water thresholds, λ, and Dt, compared to annual teff and alfalfa-TW (P < 0.05). Soil λ, but not Dt, increased with increasing θv. Grazed pastures decreased ks and water retention compared to other treatments (P < 0.05), yet did not affect λ and Dt (P > 0.05), likely due to higher ρb and contact between particles. Greater λ and Dt at saturation and PWP in perennial versus annual pastures may be attributed to differing SOM and ρb, and some a priori differences in soil texture. Overall, our results suggest that perennial pasture systems are more beneficial than annual systems for soil water storage and heat movement in semiarid regions.

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Changes in soil structure following passage of a tracked heavy machine

Cited by 8 publications

References 37 publications

Effects of rainfall intensity and compaction on water transport from opencast coal mine soils: An experimental study

Effects of rainfall intensity and compaction on water transport from opencast coal mine soils: An experimental study

The Research on Shear Properties of Deformable Ground Soil under High-speed Driving Conditions

Effect of Long-Term Semiarid Pasture Management on Soil Hydraulic and Thermal Properties

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