An Adjustment Strategy for Large Network of Monitoring Deformation - with application to the subsidence monitoring network of the Taipei Basin
碩士 === 國立臺灣大學 === 土木工程研究所 === 84 === This paper intends to analyze the vertical deformation monitoring network of the Taipei basin based on the leveling data observed from 1983 to 1990.In order to obtain appropriate elevation and standard deviation for ea...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
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| Online Access: | http://ndltd.ncl.edu.tw/handle/16577237535140655873 |
| Summary: | 碩士 === 國立臺灣大學 === 土木工程研究所 === 84 === This paper intends to analyze the vertical deformation
monitoring network of the Taipei basin based on the leveling
data observed from 1983 to 1990.In order to obtain appropriate
elevation and standard deviation for each point,ten nodal
points were first selected to form a basic free net upon which
the least squares adjustment was executed according to the
conventional technique using only leveling data of 1983.The
elevations so estimated were then chosen as the initial
approximations for the free net and rank deficient adjustment
was made to it year by year.Subsequently,the usual least
squares was applied yearly to the whole Taipei monitoring
network with the elevations and standard deviations obtained in
the free net adjustment served as the constraints.The results
thus computed are notably more accurate and hence more
sensitive in detecting deformation than the conventional
approach.The research reveals that the Taipei basin had
undergone some significant vertical deformation.
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