带陀螺定向边井下贯通导线测量的误差预计

Error Prediction of Mining Transfixion Traverse Measurement with Gyrostatic Orientation Line

矿井贯通测量是矿山测量中的一项重要工作,为确定井下巷道的掘进方向提供重要依据和保障,必须要保证在贯通点有足够的精度。目前,矿井贯通测量大多采用支导线形式,尤其在较长巷道贯通时很难保证其精度,因此,必要时需在导线上加测一定数量的陀螺定向坚强边,将支导线分为若干条方向附合导线,检查井下导线测角的正确性,同时提高井下导线测量的精度。而误差预计是在根据设计的容许要求制定施测方案时,根据施测方案确定的施测方法、使用仪器自身精度在施测前预计方案在施测过程中实际偏差可能达到的程度,将估算的预计误差与设计的容许误差进行比较,选择符合设计要求的、合理的测量方案和方法,指导测量施工。本文以实例就井下导线测量加测陀螺定向坚强边后的误差预计的计算方法作以探讨。

Mining transfixion measurement is an important task in the mining measurement and is the important guarantee for the dig- ging direction. Therefore the accuracy of transfixion point should be ensured. Open traverse is the most widely used method while it can not ensure the accuracy especially for the long roadway transfixion. The error prediction is used to predict the possible accuracy according to the plan before the measurement. The estimated and allowed errors are compared and the one which meets the require- ments of the. dasic,＇n will h~ n^oA t,~ d;~oot th~