Research On Controling Measures And The Prevention Of Cracks Of High Speed Railway Tunnel Secondary Lining

With the rapid development of high speed railway around the world and China gradually shifting its focus of high-speed railway construction to the West, tunnels consist a growing proportion in the High-speed railway construction. In construction of high-speed railway tunnels, inner lining cracking appear more and more frequently, which is a serious threat to the safety and quality of high speed railway, and an inestimable risk to high-speed railway operation. In order to ensure high-speed railway tunnel construction quality, appearance and structural safety, in this thesis, this tunnel of Datong-Xi’an Passenger Dedicated Line being taken as an example, inner lining cracks are qualitatively analyzed, development of cracks are further observed and investigated, in order to put forward controlling and remediation measures to inner lining cracks of high speed railway tunnels. Besides, remediation measures for cracks are verified and improved in Nan Shan Shang tunnel, in order to be able to provide reference to future similar high-speed railway tunnel construction.