The study and comparison of the accurate position in tunnel surveying construction for making Geographic Information System in M.R.T. Chaloem Ratchamongkhon Line Project
Abstract:
Bangkok is one of the biggest cities that are centers for transportation, education, economy, etc. The growth of Bangkok brings expansion of the city intensity of population and consequencially traffic congestion. One of the governmental solutions is construction of MRT Chaleom Ratchamongkhon Line that is under Mass Rapid Transit Authority of Thailand (MRTA). New-technique survey method was adopted in the construction. Tunneling in the first underground line that was counted to be the newest technology in Thailand requires accurate techniques, knowledge, ability, resolution and experience. It is worth for Thai survey engineers. Researcher has inspiration of studying the methods in tunneling survey by comparing the accuracy of each method. There are two methods Robotec Survey System and Laser Theodolite and Target Unit adopted in the project. According the study, the statistics results show that Robotec Survey System is more appropriate than Laser Theodolite and Target Unit to be used in tunneling. The results will be reported through GIS application, Arc View by replacing geographic information with statistics results from the study.