水土保持施工五用计算盘,包括《鱼鳞坑造林整地规格计算盘》、《石坎水平梯田各部规格计算盘》、《测坡盘》、《山坡截流沟各部规格计算盘》和《干砌谷坊各部规格计算盘》(见图1、图2)。该盘具有查找方便、快速、便于携带、操作,不用计算就可求出施工中所需要的数据,制作简单,有实用价值。《鱼鳞坑造林整地规格计算盘》使用方法:(图3) 查找在水土流失、坡度较大、地形复杂的荒山坡上,进行鱼鳞坑造林整地施工的有关规格。可先转动《鱼鳞坑造林整地规格计算盘》的“转柄”,使盘上的“年最大24小时暴雨”的箭头指向下面数字盘中,与当地年最大24小时暴雨量相等的数值处,在这三个相同数值的格中,再推动转柄找出与当地迳流系数相等的数值 Soil and water conservation construction five-purpose calculation of the disk, including the “fish-scale pit afforestation site specifications calculation disk”, “stone ridge terrace terraces specifications calculation disk”, “measuring slope disk”, “hillside ditch ditch specifications calculation disk” and “ Ministry of specifications calculation disk ”(see Figure 1, Figure 2). The disc has easy to find, fast, easy to carry, operation, without calculation can calculate the required data in the construction, making simple, practical value. How to use: (Fig. 3) Find out the specifications for afforestation and site preparation of fish-scale pit afforestation on the slopes of slopes with great soil erosion, steep slope and complex topography. Turn the “handle” of “scale calculation site for site preparation of fish-scale pit for afforestation” so that the arrow of “up to 24 hours maximum rainstorm” on the disk points to the number plate below and is equal to the maximum annual rainfall of 24 hours in the local year, In the three cells of the same value, push the handle again to find a value equal to the local flow coefficient