林道的勘测设计,一般采用水准仪测量。但在基层林场,既没有水准仪器,又缺乏水准测量技术,致使林道的勘测感到困难。在生产实践中,我们摸索和总结了利用罗盘仪勘测设计林道的方法,它具有简单方便准确实用等优点。凡有罗盘仪的林场都能采用这种方法测设林道。只要测量一次就可完成林道的导线测量和纵断面测量。精确度一般可达到水准测量的要求。一、踏查:在勘测林道前,首先对要修林道的地段进行一次全面的踏查。主要察看地形地貌,林道如何安排,可能延伸到什么地方,有一个大略的估计,并初步确定测设的措施和方法。二、选线定点:这是林道测设中的关键一环,林道特别是支叉林道都具有地形复 Forest Road survey and design, the general level measurement. However, in the grassroots forest farms, there is neither a leveling device nor a leveling technique, which makes the survey of the forest roads difficult. In production practice, we explore and summarize the method of surveying and designing forest road with compass instrument, which has the advantages of simple, convenient, accurate and practical. Where there is a compass of the forest can use this method to measure forest Road. As long as the measurement can be completed once the forest Road wire measurement and vertical section measurement. Accuracy can generally reach the level of measurement requirements. First, check: In the forest before the survey, first of all to be a section of forest Road to conduct a comprehensive investigation. Mainly look at the topography, how to arrange forest Road, may be extended to somewhere, there is a rough estimate, and preliminary determination of measuring measures and methods. Second, the routing point: This is the key link in the forest measuring and measuring, forest road, especially the fork forest has the topography complex