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Article
2000

Measuring Techniques for the Assessment of the Trafficability of Fen Grasslands

Abstract (English)

Fen grasslands belong to the vertically layered soils with a strong and very variable top layer, the gras sod, on a weak soil base, the peat. Mea- suring techniques for trafficability assessment must reflect the site- specific load-bearing capacity of the ground with sufficient accuracy and show a close relation to permissible mechanical load-input by machine- ry. Furthermore, they must be applicable with tolerable expenditure. In this paper, examinations with a penetrometer, a plate test device, and a shear vane are presented. The cone index only allows for insufficient estimation of the impact of vegetation on the load-bearing capacity. The- re is only a very loose correlation between the values of mechanical load-input by vehicle variants and the necessary cone index. On fen grassland, the load-penetration curves obtained with a plate test device exhibit a typical course with a more or less distinct pressure maximum. Its correlations to soil moisture content and vegetation in principle allow this measuring technique to be used for the assessment of the load- bearing capacity. This also applies to the prediction of the permissible load-input during the passage of vehicles. However, since a large amount of data is necessary, the expenditures required for plate tests are too high. The shearing vane enables the load-bearing capacity of the the ground and the permissible load-input to be established with sufficient precision. It is therefore an appropriate measuring technique for the as- sessment of the trafficability of fen grasslands on the basis of empirical relations.

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Agrartechnische Forschung, 6 (2000), 3. ISSN: 0948-7298
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Faculty of Agricultural Sciences
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Institute of Agricultural Engineering

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English

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@article{Tölle2000, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/10428}, author = {Tölle, Rainer and Prochnow, Annette and Kraschinski, Sven et al.}, title = {Measuring Techniques for the Assessment of the Trafficability of Fen Grasslands}, journal = {Agrartechnische Forschung}, year = {2000}, volume = {6}, number = {3}, }