Comparison of Several Shield Posture Surveying Techniques

摘要

This paper has presented several shield posture measurements methods such as manual measurement and automatic measurement which are commonly used in projects. It compares these measuring techniques by analyzing precision and convenience and chooses the best measurement method. Manual method which is used to measure the accuracy of measurements made by automatic equipments. Ensuring the accuracy of measurement, automatic measurement is used in construction surveying and manual measurement is used in control surveying. In practical project two measurements are combined together in high-efficient and speediness.