林区道路开发伸长效率的研究

EFFECTIVENESS OF DEVELOPMENT OF FOREST ROADS

林区道路开发伸长效率的研究旨在解决林道的优化设计问题。本文就林业发达国家对林道开发伸长效率的研究进行分析比较,介绍了林道开发伸长效率的概念和几个公式的推导;选取了我国东北小兴安岭林区25条林道,并对其褶曲系数K_1、山坡平均坡度I_m、河床坡度系数K_2等影响林道开发伸长效率的因子进行了调查分析,提出了甲类地区不同等级林道开发伸长效率的推荐值,该值可用于林道设计的优化评价。

Study of the effectiveness of forest roads development is aimed at optimum design of forest roads. By studying and comparing the results of the research on the effectiveness of forest roads development in developed countries, this article introduces the concetp of the effectiveness of forest roads development arid the deducing of some formulas. Moreover, We choose 25 lines of roads in Xiaoxinganling forest area, northeast of China, to analyse the influences of the fold coefficient of K_1, the coefficient of the grade of mountain slope I_m and the coefficient slope of river bed K_2 on the effectiveness of forest roads development. Eventually the recommendations for the effectiveness of forest roads development in different grades in the No. A (Class A) areas are put forward in this pper. This effectiveness of forest roads development can be used to evaluate the optimum design of forest roads.