Abstract
Timber harvesting operations in four ejidos in the El Salto region of Durango, Mexico, were analyzed using a time and motion study to determine the operational productivity of manual felling, delimbing, bucking, skidding and mechanized loading. A total of 704 cycles for felling, 900 for mechanical skidding and 1,294 for mechanical loading were timed. The results indicate that the operational productivity in the manual felling cycle is 28.67 m3•h-1. Crane skidding was 19.83 m3•h-1 at an average distance of 43.13 m. Mechanized loading productivity was 35.27 m3•h-1. Productivity was shown to be sensitive to variations in the diameter and length of the trees and logs, as well as the distances found in the work cycles analyzed.
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More From: Revista Chapingo Serie Ciencias Forestales y del Ambiente
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