IⅠCPⅢ控制网测量数据处理二31课件讲解.pptx

土木工程检测技术专业教学资源库CPⅢ控制网测量数据处理（二）CPⅢcontrolnetworkmeasurementdataprocessingIⅠLearningResourcesforSurveyingTechnologyforCivilEngineeringMajors

CPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢElevationControlNetworkDataProcessingCPⅢ高程控制网数据处理

CPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢ高程控制网数据处理CPⅢElevationControlNetworkDataProcessing水准测量的外业数据进行检核，不合格，重测。Thefielddataofthelevelmeasurementshouldbecheckedfirst.Iftheobservationdataisunqualified,findoutthestationswithunqualifiedobservationdatatoreworkandretest

??CPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢ高程控制网数据处理CPⅢElevationControlNetworkDataProcessing计算每千米高差偶然中误差。Calculatetheaccidentalmeansquareheightdifferenceperkilometer当闭合环数超过20个，进行每千米水准测量的高差全中误差计算。Whenthenumberofclosedroutesexceeds20,calculatethetotalmeansquareerrorofthelevelmeasurementheightdifferenceperkilometer.

水准测量等级??精密水准≤2.0mm≤4.0mmCPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢ高程控制网数据处理CPⅢElevationControlNetworkDataProcessing待所有外业观测数据全部合格，进行内业平差计算。Ifthedatacanmeettherequirements,theinternaladjustmentcanbeconducted精密水准测量水准路线的精度要求Precisionlevelingmeasurementlevelingrouteaccuracyrequirements

CPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢ高程控制网数据处理CPⅢElevationControlNetworkDataProcessingCPⅢ高程控制网以二等水准基点作为起算数据进行约束平差。经过闭合差、平差计算等，得到平差后的高程值。TheCPⅢelevationcontrolnetworkusesthesecond-classlevelingbasebenchmarkasthestartingdatatoconstraintheadjustment.Aftermisclosureandadjustmentcalculation,theelevationvalueafteradjustmentisobtained.

CPⅢcontrolnetworkmeasurementdataprocessingCPⅢ控制网测量数据处理CPⅢElevationControlNetworkDataProcessingCPⅢ高程控制网数据处理

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