闭合导线在新桥矿控制网中的工程实践

矿山控制网的建立有其特殊性，山高坡陡、埋点、通视等较为困难，兼之测量控制点必须确保一定的精度，这就给网的布置选择及评定带来一定的难度。通过新桥矿业近井点控制网的测设，讨论了近井网布设的优化问题，同时对测距闭合导线有可能存在的伪闭合现象提出了有针对性的对策。

Engineering Practice of Closing Line in Control Net at Xinqian Mine

The setting up of mine control net has its particularity: high mountain and steep slope make mark setting and through vision rather difficult.The required precision of measurement control net brings difficulty to the selection of net configuration and its appraisal.Through the practice of near shaft-control net at Xinqiao Mine,the optimization of the lay-out of near shaft-net is discussed and the countermeasures for the false closing phenomenon that may exist in the closing line for ranging are proposed.