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  • 最新产品 

    >
    常见问题

    工程测量的常用方法有哪些?

    来源:
    发布时间:
    2019-07-23
    一、高程测量

    高程测量主要有水准测量和三角高程测量等。
    水准测量是利用水平视线来测量两点间的高差。由于水准测量的精度较高,所以是高程测量中最主要的方法。 
    三角高程测量是测量两点间的水平距离或斜距和竖直角(即倾斜角),然后利用三角公式计算出两点间的高差。三角高程测量一般精度较低,只是在适当的条件下才被采用。 

    二、角度测量

    角度测量的仪器主要是经纬仪,分为光学经纬仪和电子经纬仪两大类
    光学经纬仪
    光学经纬的水平度盘和竖直度盘用玻璃制成,在度盘平面的周诶边缘刻有等间隔的分划线,两相邻分划线间距所对的圆心角称为度盘的格值,又称度盘的最小分格值。
    电子经纬仪
    电子测角原理简介
    电子测角仍然是采用度盘来进行。与光学测角不同的是,电子测角是从特殊格式的度盘上取得电信号,根据电信号再转换成角度,并且自动地以数字形式输出,显示在电子显示屏上,并记录在储存器中。电子测角度盘根据取得电信号的方式不同,可分为光栅度盘测角、编码度盘测角和电栅度盘测角等。

    三、距离测量

    距离测量分为钢尺测量、视距测量和光电测距。
    1.钢尺测量
    式中: n—整尺段数;
    l—钢尺长度(m);
    q—不足一整尺的余长(m)。
    2.视距测量
    经纬仪视距测距是一种传统的水平距离和高差的间接测量方法。
    使用的工具:经纬仪和视距尺
    3.光电测距

    四、坐标测量

    工程测量的主要任务之一是测量或放样空间点的三维坐标。所使用的仪器主要有beplay官网体育进入和GPS接收机等。

    (本文章来源于网络,如有侵权请联系删除)


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