论文信息 - Comparison of Cable Skidding Productivity and Cost: Pre-Choking Mainline Versus Tagline Systems

Comparison of Cable Skidding Productivity and Cost: Pre-Choking Mainline Versus Tagline Systems

This study quantifies the operational efficiency and cost of pre-choking main and tagline systems for tree-length extraction using a cable skidder. The study was done by comparing productivity and costs of the two systems in a semi-mechanised tree-length harvesting operation. Study data was collected using time studies and work sampling for choking and dechoking operations, and GNSS tracking for recording and analysing machine in-field travel time and skidding distance. Operating costs were estimated using South African Harvesting and Transport Costing Model. Average productivity of the tagline system (46 m PMH) exceeded that of the mainline system (34 m PMH) by 35%. The extraction cost of the tagline system (US$1.10 m) was 26% lower than the cost of using the mainline system (US$1.50 m).

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