應用不同垂直變動分析法之監測網成果比較分析研究

A Study of Comparison and Analysis of Results from Several Vertical Movement Methods to a Subsidence Monitoring Network

高書屏(Szu-Pyng Kao) ； 陳昭男(Chao-Nan Chen) ； 李茂青(Mao-Ching Lee)

《測量工程》 51卷3&4期 (2009/12) Pp. 3-22

https://doi.org/10.29983/JSE.200912.0002

摘要

垂直沉陷監測之首要目的在找出變動點，後續才能正確探究其影響變動產生之原因，進而針對該等原因有效改善之。目前垂直沉陷監測大都還是以精密水準測量爲主要作業方法，通常採用多次重複水準測量的整體擬穩帄差模式來求解不同時期各點之變形量。
本研究以南部某大型工程廠區爲實驗區，探討採用三種不同垂直變動分析法所解算之成果進行分析比較，期能比較各種模式挑出變動點方法之特性爲方向。本研究分別採用固定基準帄差模式、自由高程基準帄差模式及擬穩帄差模式，計算出高程變化量，再分別進行統計循環測試檢驗、單點位移顯著性檢驗及穩健估計法（IGG-I法）找出變動點進行比較研究，期能快速有效的區分出變動點與穩定點，以供探討變動原因作爲重大工程部分維修或補強之依據。

關鍵字

變動點 ； 固定高程基準 ； 自由高程基準

並列摘要

The key to vertical subsidence monitoring is to find the variation point, so that the causes of variation could be identified and improved. At present, the vertical subsidence monitoring uses precise level survey as the main operating method, and the overall quasi-stable adjustment mode of repeated level surveys is used to solve the variations of all points at different times.
This study used a large-scale plant in southern Taiwan as the experimental area to discuss the resolution results of different vertical variation analyses, in order to identify the characteristic of variation point method by comparing different modes. This study adopted the fixed vertical datum adjustment method, free vertical datum Computation Method and quasi-stable adjustment to figure out the elevation variations. It also conducted statistic loop test, single-point displacement significance test, and solidity estimation method (IGG-I) to find the variation point, in order to distinguish the variation point and stable point quickly and effectively. The results can be used as reference to the servicing or reinforcement of large-scale projects.

並列關鍵字

variation point ； fixed vertical datum ； free vertical datum