| 视准线测量小角法与觇牌法应用浅析 |
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| 引用本文： | 杨文锋,李广云,荆海峰,李明磊.视准线测量小角法与觇牌法应用浅析[J].测绘与空间地理信息,2017(1). |
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| 作者姓名： | 杨文锋 李广云 荆海峰 李明磊 |
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| 作者单位： | 信息工程大学导航与空天目标工程学院,河南郑州,450052 |
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| 摘 要： | 在目前城市深基坑水平位移监测作业面较小的情况下,视准线法是一种较有效的也是最常用的监测方法。本文首先结合具体测量数据,介绍视准线测量方法中的小角法与活动觇牌法的基本原理以及相关公式的推导,对数据结果进行了精度评定并分析影响其精度的主要因素。最后,结合测量数据处理的结果,分析在进行基坑工程水平位移监测时监测方案的选取,为今后基坑的监测提供参考。
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| 关 键 词： | 基坑 水平位移 小角法 活动觇牌法 精度分析 |
Analysis on Small Angle Measurement Method and Active Target Observation Method in Collimation Line Measurement |
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| YANG Wen-feng,LI Guang-yun,JING Hai-feng,LI Ming-lei.Analysis on Small Angle Measurement Method and Active Target Observation Method in Collimation Line Measurement[J].Geomatics & Spatial Information Technology,2017(1). |
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| Authors: | YANG Wen-feng LI Guang-yun JING Hai-feng LI Ming-lei |
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| Abstract: | In the horizontal displacement monitoring of deep foundation pit where the operative surface is small,among the conventional monitoring methods,the collimation measurement method is an effective and most commonly used one.The basic principle and the relative formula of Small Angle Measurement Method and Active Target Observation Method used in collimation measurement were introduced based on specific measurement data.The accuracy of the methods was analyzed and the main factors influencing the measurement accuracy were discussed.Based on relative data processing result,the selection method of horizontal displacement monitoring method of deep foundation pit was proposed,and suggestions to improve observation accuracy were presented. |
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| Keywords: | foundation pit horizontal displacement minor angle method portable target method accuracy analysis |
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