河台金矿高村矿区至云西矿区运输平巷贯通测量

河台金矿高村矿区至云西矿区运输平巷贯通工程，其两端硐口相距2 995 m，需实际掘进2 445 m，采用相向掘进、中间贯通的方案施工，要求贯通接合面横向限差0.5 m，竖向限差0.2 m。该工程的控制测量分为地面和井下2个部分，地面拟采用5″支导线（包括三角高程测量）、井下拟采用7″支导线和Ⅰ级水准测量的方案施测。通过误差预计，贯通横向误差在0.262 m以内、竖向误差在0.076 m以内。贯通后进行了误差测定，得实际横向偏差为0.239 m、实际竖向偏差为0.040 m，达到了预期目的。

Lane Perforation Measuring for Transportation from Gaocun to Yunxi Mine District in Hetai Gold Mine,Guangdong Province

The project of lane perforation for transporting from Gaocun to Yunxi district.The distance between two ends of holes is 2 995 m and need tunnel 2 445 m actually.With the program of opposite tunneling and running through the middle of the construction.Requiring the limited difference is 0.5 m in horizontal joining and 0.2 m in vertical when running through.The project controlling measuring is combined by ground and underground.On the ground to be used 5″ conductors（including trigonometric leveling）.Underground to be used 7″conductors and I-class measurement to test.By estimating,the difference will be within 0.262 m on horizontal and 0.076m on vertical join-ing.And after perforation finished,the actual difference is 0.239 m and 0.040 m on horizon vertical,achieving the expected target.