广东河台金矿高村至云西矿区运输平巷贯通测量

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

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。

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.