利用大地四边形进行矿井近井点设计

Design of Near-shaft Control Point by Earth Square

通过选点、布网、觇标选择、精度估算等手段,利用四边形准确地确定了近井点坐标,为矿井的工程测量提供了理论依据。

By choosing the point, spreading net, mark choice, accuuacy estimate, and the square to make sure the near- shaft control point, provides the theoretical basis for the engineering measure.