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Overview of Chennai Metro Rail Project TBM Operations Between Gemini and Saidapet

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The Chennai Metro Rail Project involves the deployment of Tunnel Boring Machines (TBMs) for tunneling between Gemini and Saidapet. Key locations include the May Day Park Shaft, where TBMs will be assembled, and the installation of ventilation shafts for efficient air circulation. The project maintains the existing six-lane road width and includes sidewalks of at least 1.5 meters. Provision for future escalators is also included to enhance accessibility to nearby bus and railway stations. Cross-passages will be constructed every 250 meters along the tunnels.

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Overview of Chennai Metro Rail Project TBM Operations Between Gemini and Saidapet

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  1. mosMetrostroy CHENNAI METRO RAIL PROJECT TBM Starting Point GEMINI TBM Exit Point SAIDAPET TBM Starting Point • VENTILATION SHAFTS • Tunnel ventilation shafts & VAC supply and • Exhaust shafts • EXISTING ROAD WIDTH • Minimum road width for six lanes to be • maintained wherever the existing road is • modified to accommodate station design • - Road median to be rearranged accordingly • SIDEWALK • Minimum 1.5m sidewalk to be maintained • on either side of the road • SUBWAYS AND SKYWALKS • Links with other important locations such as • nearby Bus stand and Railway stations • FUTURE ESCALATORS • Provision for future installation of escalators from • street level to concourse level • OTHER ASPECTS • Existing utilities, flood level & entry to adjacent • buildings

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  4. mosMetrostroy MAY DAY PARK SHAFT 4 TBM will be used in this project. 2 of them will be assembled in May Day Park shaft. From May Day Park Shaft both TBM will proceed to Gemini Station, passing the stations of Govt. Estate, LIC Building and Thousand Lights. The fabric of lining elements and the evacuation of the excavated ground are done in May Day Park Shaft. Another 2 will be assembled at the Cut & Cover Box Ramp near Saidapet Station. From the starting shaft both TBM will proceed to Gemini Station, passing through Saidapet, Chamiers Road and Teynampet. The cross-passages for both tunnels will be constructed every 250 meters. GEMINI SAIDAPET = TBM Exit Point = TBM Starting Point

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