全站仪小角法水平位移监测精度估算与分析
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摘要
为了分析全站仪小角法水平位移监测精度,本文基于误差传播定律和基坑位移监测数据对其进行了精度分析。通过理论推演,发现在保守精度估算条件下,小角法具有较高的水平位移测量精度。同时根据理论分析,发现小角法测量最大影响因素是对中和照准偏心误差,严格控制该误差,可有效提高小角法测量精度。监测实验表明,全站仪小角法施测精度易于控制,且对施测仪器精度要求不高,可满足三等位移监测施测要求,是一种简单、快速、高效的水平位移监测方法。
In order to analyze the accuracy of horizontal displacement monitoring with small angle method of total station,based on error propagation law and pit displacement monitoring data, the accuracy of small angle method of total station displacement monitoring was analyzed.Through theoretical deduction,it was found that under the condition of conservative accuracy estimation,the small angle method had higher accuracy of horizontal displacement measurement.At the same time, according to the theoretical analysis,it was also found that the biggest influence factor of the small angle method is the centring and electricity of observing point error,and kept the error minor in order to effectively improve the measurement precision of the small angle method.The monitoring experiment shows that the measuring precision of the total station small angle method is easy to control,and the precision of the measuring instrument is not high.It could meet the requirement of three grade displacement monitoring,and it is a simple, rapid and efficient horizontal displacement monitoring method.
In order to analyze the accuracy of horizontal displacement monitoring with small angle method of total station,based on error propagation law and pit displacement monitoring data, the accuracy of small angle method of total station displacement monitoring was analyzed.Through theoretical deduction,it was found that under the condition of conservative accuracy estimation,the small angle method had higher accuracy of horizontal displacement measurement.At the same time, according to the theoretical analysis,it was also found that the biggest influence factor of the small angle method is the centring and electricity of observing point error,and kept the error minor in order to effectively improve the measurement precision of the small angle method.The monitoring experiment shows that the measuring precision of the total station small angle method is easy to control,and the precision of the measuring instrument is not high.It could meet the requirement of three grade displacement monitoring,and it is a simple, rapid and efficient horizontal displacement monitoring method.
引文
[1] 王东波.地表沉降变形监测技术研究与系统设计实现[J].北京测绘,2016(6):41-44.
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[4] 郭宗河,郑进风.全站仪面积测量及其精度分析[J].测绘通报,2002(3):30-31.
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[6] 丁林磊,庞文,万冠军.小角法精确悬高测量方法研究[J].测绘地理信息,2013,38(6):42-44.
[7] 刘沛.自动化全站仪在高层建筑基坑变形监测中的应用[J],测绘与空间地理信息,2011,34(3):239-241.
[8] 马亮.广州国际会展中心预应力张弦式桁架施工测量[J],施工技术,2003,32(5):28-29.
[9] 徐汉涛.小角法水平位移观测的误差分析[J].南通工学院学报,2001,17(3):37-40.
[10] 张宏志.小角法在矿区建筑物水平位移监测中的应用[J].煤炭与化工,2014,37(3):121-122,149.
[11] 中华人民共和国住房和城乡建设部.建筑变形测量规范:JGJ8-2016[S].北京:中国建筑工业出版社,2016.
[2] 王炎,丁卫平.高层建筑物沉降观测方案设计探讨[J].北京测绘,2013(4):83-85.
[3] 李巍,赵亮,张占伟,等.常用全站仪放样方法及精度分析[J].测绘通报,2012(5):29-32.
[4] 郭宗河,郑进风.全站仪面积测量及其精度分析[J].测绘通报,2002(3):30-31.
[5] 周显平.全站仪三角高程测量及精度[J].辽宁工程技术大学学报(自然科学版),2011,30(5):717-720.
[6] 丁林磊,庞文,万冠军.小角法精确悬高测量方法研究[J].测绘地理信息,2013,38(6):42-44.
[7] 刘沛.自动化全站仪在高层建筑基坑变形监测中的应用[J],测绘与空间地理信息,2011,34(3):239-241.
[8] 马亮.广州国际会展中心预应力张弦式桁架施工测量[J],施工技术,2003,32(5):28-29.
[9] 徐汉涛.小角法水平位移观测的误差分析[J].南通工学院学报,2001,17(3):37-40.
[10] 张宏志.小角法在矿区建筑物水平位移监测中的应用[J].煤炭与化工,2014,37(3):121-122,149.
[11] 中华人民共和国住房和城乡建设部.建筑变形测量规范:JGJ8-2016[S].北京:中国建筑工业出版社,2016.