DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 11-12/2015 str. 31     <-- 31 -->        PDF

The spatial distribution and the existing state of the ground and underground drainage system elements on sampling plots of primary forest traffic infrastructure is shown in Figure 12. Table 3 shows first at the level of individual forest road and then at the level of entire management unit integrated information about ground and underground drainage system elements. There is no forest road on which intervention in the objects of ground and underground drainage system elements (in terms of enabling them to be fully functional) is unnecessary.
For the ground drainage system to be optimized, the total of 3520 m classic and 1680 m lined drainage ditches on seven forest roads in MU “Belevine” should be constructed, as well 860 m classic drainage ditches, of which 240 m translated into lined drainage ditches should be repaired. It is necessary to construct 47 new and repair 41 existing cross-ditches. 45 concrete pipe culverts were recorded. With regard to the developed hydrograph conditions close to forest roads, existing climatic and geological features of soil in MU “Belevine”, and with the aim of diminishing/reduce the negative impact of water on forest roads, pipe-culverts, drainage ditches and cross-ditches of the right shape, size, and type should be constructed. The elements of an optimized system of ground and underground drainage, along forest roads as well as and for the entire MU “Belevine” are given in Table 5.
Damaged road construction and the proposed method of repairing macadam pavement structure at the level of individual forest roads and for the entire MU “Belevine”, are shown in Table 6. Macadam pavement structure of forest roads is in good condition and does not require any intervention on 4.01% of sampling plots. At 23.98% of sampling plots, pavement can be repaired with mending method. Most of sampling plots (51.40%) show that repair pavement method should be aligning, and for 20.62% of sampling plots the most expensive method of pavement repair – material outspreading is necessary.
In future studies it is recommended that to the technological process of reconstruction of forest road network in MU “Belevine”, and it is bringing to so-called “zero”/optimized state, analysis of associated costs should be included.
Key words: forest road, technical features, drainage system, reconstruction of forest roads, mountainous relief area