目前,尽管全站仪的使用已经很普遍,但在一些小型矿山,特别是金属矿山,出于规模小,全站仪在井下使用并不是很多。笔者在多年从事矿山测量的基础上,利用手持式激光测距仪和电子经纬仪,改装成轻便的电子速测仪,可以方便地进行角度和距离的测量,从而大大提高了井下测量的效率。 At present, although the use of total stations has been very common, but in some small mines, especially metal mines, due to the small size, the total station is not used underground. On the basis of many years of mine surveying, the author makes use of hand-held laser range finder and electronic theodolite to convert it into a portable electronic speed measuring instrument, which can conveniently measure angles and distances, thus greatly improving the efficiency of underground surveying.