在工程的建设与运营过程中，均要有稳定、可靠的高程基准。基岩标是通过钻探的方法而埋设在地下完整基岩上的基岩水准标，它是保证轨道交通高程控制测量精度的重要措施之一。以常州市轨道交通1号线高程控制测量和新的高程基准的建立为实例，阐述了基岩标结构设计和施工工艺，探讨了基岩标施工过程中各关键环节的质量控制要点。%In the construction and operation of the works ,to be stable ,reliable datum .Bedrock bench mark is buried in the ground and bedrock bench mark of complete bedrock by drilling method ,it is one of the important measures to en-sure rail height control measurement accuracy .Established in Changzhou city orbit traffic builds 1 line surveying and ele-vation datum as an example ,expounds the bedrock structure design and construction process ,discusses the quality control points of bedrock bench mark every key link in construction process .
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