向莆铁路雪峰山出口隧道监控量测总结（Exit the railway to the Po Xuefeng mountain tunnel monitoring measurement summary）.docVIP

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向莆铁路雪峰山出口隧道监控量测总结（Exit the railway to the Po Xuefeng mountain tunnel monitoring measurement summary）.doc

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向莆铁路雪峰山出口隧道监控量测总结（Exit the railway to the Po Xuefeng mountain tunnel monitoring measurement summary）

向莆铁路雪峰山出口隧道监控量测总结（Exit the railway to the Po Xuefeng mountain tunnel monitoring measurement summary） Exit the railway to the Po Xuefeng mountain tunnel monitoring measurement summary Zheng Liubin, Zhang Shuping, Zhu Bin (China Railway Tunnel stock new to Pu railway FJ-2 standard five work area tunnel two company) Abstract: at present, the design concept of railway tunnel is: safety, environmental protection, as much as possible to destroy the original topography, the tunnel generally follows early into the night out, so the tunnel imports and exports are relatively shallow buried. In order to ensure the safety of the project, the quality is reliable, and the monitoring and measurement is an important work in construction. This paper expounds the new measurement method of high speed railway to the Po No. two exit Xuefengshan tunnel monitoring measurement, grasp the dynamic of the surrounding rock and supporting work, a comprehensive analysis of monitoring and measurement, so as to adjust the time tunnel supporting scheme, ensure the stability of surrounding rock and construction safety. Key words: monitoring measurement, vault subsidence, horizontal convergence, surface subsidence, total station, level, tower scale 1 project overview The tunnel located in the north-west of Fujian, crossing the Xuefeng mountain peak. Located in the village of Jiangle County suburb of Pleioblastus import, export is located in the town of Shaxian County after Ridge village. The tunnel adopts double hole single line, the left line tunnel import mileage DK300+850, the right line tunnel import mileage YDK300+850, the left line tunnel exit DK318+692 kilometers, the right line tunnel exit mileage YDK318+676. The left line tunnel is 17842 meters long, and the right tunnel is 17826 meters long. The maximum depth of the tunnel is 948 meters. The longitudinal slope in the tunnel is herringbone slope, and the maximum longitudinal slope is 6 per thousand. The tunnel surface layer for export eluviu