Use of UAV Data and HEC-RAS Model for Dimensioning of Hydraulic Structures on Forest Roads

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dc.authorscopusid57255567900
dc.authorscopusid36460530900
dc.authorscopusid55303091800
dc.authorscopusid57192068954
dc.contributor.authorAçıl, Ahmet
dc.contributor.authorAydın, A.
dc.contributor.authorEker, Remzi
dc.contributor.authorDuyar, A.
dc.date.accessioned2023-07-26T11:54:18Z
dc.date.available2023-07-26T11:54:18Z
dc.date.issued2023
dc.departmentDÜ, Orman Fakültesi, Orman Mühendisliği Bölümüen_US
dc.description.abstractIn terms of engineering standards, the dimensions of hydraulic structures such as culverts on forest roads should have the capability to drain the expected maximum discharge for a 50-year return period during their lifespan (i.e., 20 years). In Türkiye, Talbot’s formula, as empirical method, has commonly been used in determining the required cross-sectional area (CSA) of the structures. However, in practice, forest road engineers in Türkiye do not pay enough at-tention to their construction with required dimensions calculated by Talbot’s formula. In the present study, the Hydrological Engineering Centre – River Analysis System (HEC-RAS) model was used to evaluate the dimensions of installed structures in terms of their ability to drain maximum discharges, with the aim of determining the required dimensions for those that could not meet this requirement. To this purpose, the 6+000 km forest road No. 410 in Acısu Forest Enterprise, Gerede Forest Directorate (Bolu, Türkiye) was selected as the study area. In total, 15 small watersheds crossed by the forest road were delineated, with only six of them having cross-drainage structures. The HEC-RAS model geometry was generated by manual unmanned aerial vehicle (UAV) flights at altitudes of 5–15 m, providing very high spatial resolution (<1 cm). The maximum discharges of the watersheds were estimated for the HEC-RAS model using the Rational, Kürsteiner, and Soil Conservation Service-Curve Number (SCS-CN) methods. Maximum discharges of 0.18–6.03 were found for the Rational method, 0.45–4.46 for the Kürsteiner method, and 0.25–7.97 for the SCS-CN method. According to the HEC-RAS hydraulic model CSA simulations, most of the installed culvert CSAs calculated by Talbot’s formula were found to be incapable of draining maximum discharges. The study concluded that the HEC-RAS model can provide accurate and reliable results for determining the dimensions of such structures for forest roads. © 2022 by the authors.en_US
dc.identifier.doi10.5552/crojfe.2023.1701
dc.identifier.endpage188en_US
dc.identifier.issn1845-5719
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85146317725en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage171en_US
dc.identifier.urihttps://doi.org/10.5552/crojfe.2023.1701
dc.identifier.urihttps://hdl.handle.net/20.500.12684/12789
dc.identifier.volume44en_US
dc.identifier.wosWOS:001033440200001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAydın, A.
dc.language.isoenen_US
dc.publisherUniversity of Zagreb, Faculty of Mining, Geology and Petroleum Engineeringen_US
dc.relation.ispartofCroatian Journal of Forest Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz$2023V1Guncelleme$en_US
dc.subjectforest roadsen_US
dc.subjectHEC-RASen_US
dc.subjectHydraulic structuresen_US
dc.subjectSCS-CNen_US
dc.subjectUAVen_US
dc.subjectCulvertsen_US
dc.subjectForestryen_US
dc.subjectHydraulic modelsen_US
dc.subjectRoads and streetsen_US
dc.subjectSoil conservationen_US
dc.subjectUnmanned aerial vehicles (UAV)en_US
dc.subjectWatershedsen_US
dc.subjectAerial vehicleen_US
dc.subjectAnalysis systemen_US
dc.subjectCross sectional areaen_US
dc.subjectEngineering standardsen_US
dc.subjectForest roadsen_US
dc.subjectHydrological Engineering Centeren_US
dc.subjectHydrological engineering center – river analyse systemen_US
dc.subjectSoil conservation service - curve numbersen_US
dc.subjectSystem modelsen_US
dc.subjectUnmanned aerial vehicleen_US
dc.subjectAntennasen_US
dc.subjecthydraulic structureen_US
dc.subjectreturn perioden_US
dc.subjectroaden_US
dc.subjectsimulatoren_US
dc.subjectspatial resolutionen_US
dc.subjectunmanned vehicleen_US
dc.subjectAreaen_US
dc.subjectDimensionsen_US
dc.subjectDrainageen_US
dc.subjectEngineeringen_US
dc.subjectForestryen_US
dc.subjectHydraulic Structuresen_US
dc.subjectRoadsen_US
dc.titleUse of UAV Data and HEC-RAS Model for Dimensioning of Hydraulic Structures on Forest Roadsen_US
dc.typeArticleen_US

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