大坝平面变形控制网观测及稳定性分析  

Observation and Stability Analysis of Dam Plane Deformation Control Network

作　　者：葛文[1] 何文峰[1] 王英林[1] 徐长虹[1] 陈锦林 Ge Wen;He Wenfeng;Wang Yinlin;Xu Changhong;Chen Jinglin(NingBo Institute of Surveying and Mapping,Ningbo 315402,China)

机构地区：[1]宁波市测绘设计研究院,浙江宁波315402

出　　处：《城市勘测》2018年第2期123-127,共5页Urban Geotechnical Investigation & Surveying

基　　金：江苏省普通高校研究生科研创新计划(KYLX15_0478)

摘　　要：以琅琊山水电站为例,全面系统介绍大坝平面变形控制网的观测及稳定性分析方法。本文介绍了平面控制网中水平角、距离、天顶距观测时的注意事项及各项技术指标以及水平角校核、距离改正计算、天顶距计算的相关方法。采用秩亏自由网进行平差计算并分别利用平均间隙法、单点位移分量法、形变参数显著性检验法对控制网进行了稳定性分析,结果表明,控制网不仅观测成果合格且点位稳定。In order to comprehensively and systematically introduce the observation and stability analysis method of dam plane deformation control network.This article takes the Langyashan Hydropower Station as an example,First introduced the plane control network in the horizontal angle,distance,zenith observation from the attention and the technical indicators,Then,the related methods of horizontal angle checking,distance correction calculation and zenith distance calculation are introduced,Finally,the stability of the control network is analyzed by the average gap method,the single point displacement component method and the deformation parameter significance test method.The results show that the control network is not only qualified and stable,but also can provide reference for similar projects.

关 键 词：平面控制网 外业观测 数据处理 稳定性分析 

分 类 号：P221[天文地球—大地测量学与测量工程]