Improving drainage conditions of forest roads using the GIS and forest road simulator

• Published in: Journal of forest science (Praha) Vol. 66; no. 9; pp. 361 - 367
• Main Authors: Nasiri, Mehran, Askari, Behnaz
• Format: Journal Article
• Language: English
• Published: Prague Czech Academy of Agricultural Sciences (CAAS) 01.01.2020; Czech Academy of Agricultural Sciences
• Subjects: Culverts; Design; Discharge; Drainage; Forests; Hydrological analysis; Hydrology; Installation; Landslides; large and small scale; locating culverts; Road design; Roads; Roads & highways; Simulation; waterfront; Waterfronts
• ISSN: 1212-4834; 1805-935X
• DOI: 10.17221/16/2020-JFS

In this study a new method of locating culverts is presented with the composition of achieved discharge from hydrological analysis and simulated forest roads in RoadEng 3D simulator to improve drainage condition. Locating culverts was performed on a small scale (1:20 000, using GIS) and large scale (1:2 000, road geometric design simulator). The small-scale study regarding the achieved discharge from streams shows that the installation of some culverts is not necessary. The large-scale study also showed that the geometric design of forest road has a significant effect on locating culverts and its accuracy. To improve drainage conditions 6 culverts and 2 waterfronts taking into account the geometric design of forest road, hydrological conditions and appropriate intervals (155 m) have been proposed. No installation or lack of accuracy to find the best location of culverts may result in the occurrence of creep and landslide, so the cost of destruction would be several times higher than the cost of technical buildings construction.