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一、国外缩短伐区集材距离方法国外伐区集材距离,一般为300米至400米,最远不超过500米。其缩短伐区集材距离方法较多,主要有如下几种: 1、提高纵断坡度展线法国外林区运材公路,线路纵断面设计坡度较大,重车下坡一般在10％左右,最大可达15％。线路平面设计,一般采取偏倚,傍山、绕谷、盘山等方法,展线延伸至伐区腹部,使集材距离缩短。2、缩短公路间距法缩短运材公路间距,实质是增加林道貌岸然网密度主要基于集材与修建功立业成本合计为最小的林道间距。
First, the foreign countries to shorten the method of cutting timber from the cutting method Foreign timber cutting distance, generally 300 meters to 400 meters, the furthest does not exceed 500 meters. There are many ways to shorten the distance between cutting timber and timber, mainly as follows: 1. Raising the longitudinal gradient The longitude gradient of Yulin Timber Forest Road in foreign countries outside of China is larger, and the slope of heavy truck is generally about 10% , Up to 15%. Line graphic design, the general approach to bias, mountain, around the valley, winding and other methods, the extension of the exhibition line to the cutting area abdomen, the skidding distance shortened. 2, shorten the highway spacing method Shorten the distance between the transportation material highway, in essence, to increase forest Tao shore net density is mainly based on the total cost of timber and construction work cost is the minimum forest road spacing.