Promotion of Construction of the Chuo Shinkansen between Shinagawa and Nagoya

「南アルプストンネル山梨工区で本坑の品川方が貫通し、第一首都圏トンネル梶ヶ谷工区では都市部トンネルとして初めて非常口となる立坑間が繋がるなど、沿線各地で工事を進めました。」

「For the Shinagawa–Nagoya section, for which the construction implementation plan has been approved, land acquisition and other activities progressed, construction began on the Yamanashi Prefecture Station (provisional name), and work began on all stations between Shinagawa and Nagoya. Full-scale excavation also began in the Onoji section of the First Tokyo Metropolitan Area Tunnel and the Meijo section of the First Chukyo Metropolitan Area Tunnel, among other deep-underground sections excavated using shield machines. In the Tonaka, Mibusawa and Sakashima sections of the Ina Mountain Tunnel in Nagano Prefecture, the main tunnels in adjacent sections achieved a breakthrough for the first time excluding the Yamanashi Maglev Test Line, and construction progressed in areas along the line.」

「For the Chuo Shinkansen superconducting maglev railway, land acquisition and other activities progressed in the Shinagawa–Nagoya section, for which the construction implementation plan has been approved, and construction contracts were signed for the Yamanashi Prefecture Station (provisional name). Full-scale excavation also began in the Sakashita-Nishi section of the First Chukyo Metropolitan Area Tunnel and the Kita-Shinagawa and Onoji sections of the First Tokyo Metropolitan Area Tunnel, where tunnels are being excavated deep underground using shield machines. In the Tonaka, Mibusawa and Sakashima sections of the Ina Mountain Tunnel in Nagano Prefecture, the main tunnels in adjacent sections achieved a breakthrough for the first time excluding the Yamanashi Maglev Test Line, and construction progressed in areas along the line.」

「For the Shinagawa–Nagoya section, for which the construction implementation plan has been approved, land acquisition and other activities progressed, construction began on the Kanto Rolling Stock Depot (provisional name), and full-scale excavation began in the Kajigaya and Higashi-Yurigaoka sections of the First Tokyo Metropolitan Area Tunnel, where tunnels are being excavated deep underground using shield machines. Construction also progressed in areas along the line.」

「For the Chuo Shinkansen superconducting maglev railway, land acquisition and other activities progressed in the Shinagawa–Nagoya section, for which the construction implementation plan has been approved. Full-scale excavation also began in the Kajigaya and Higashi-Yurigaoka sections of the First Tokyo Metropolitan Area Tunnel, where tunnels are being excavated deep underground using shield machines, and construction progressed in areas along the line.」

「As for construction, exploratory excavation to verify safety initiatives in practice was completed in the Higashi-Yurigaoka section of the First Tokyo Metropolitan Area Tunnel, where the tunnel is being excavated deep underground using a shield machine. Construction of station structures also began at the Kanagawa Prefecture Station (provisional name), while the main tunnel of the First Minami-Koma Tunnel in Yamanashi Prefecture achieved a breakthrough for the first time excluding the Yamanashi Maglev Test Line, and work progressed energetically in areas along the line.」

「Subsequently, in December 2023, the company applied for approval of the station and rolling stock depot building and equipment works, rolling stock and other items as Construction Implementation Plan (3). It also applied for changes to the construction budget, scheduled completion dates and other items already approved, based on design reviews, more detailed surveys, the progress of consultations and construction, and other factors, and received approval. With approval of Construction Implementation Plan (3), all items required for construction between Shinagawa and Nagoya were approved. 7. Scheduled completion date: fiscal 2027 and thereafter」

「Work progressed steadily in areas along the line, including completion of excavation within the exploratory excavation range in the Higashi-Yurigaoka section of the First Tokyo Metropolitan Area Tunnel, where the tunnel is being excavated deep underground using a shield machine to verify safety initiatives in practice.」

「For the Chuo Shinkansen superconducting maglev railway, land acquisition and other activities progressed in the Shinagawa–Nagoya section, for which the construction implementation plan has been approved. Full-scale work newly began at the Gifu Prefecture Station (provisional name), Nagano Prefecture Station (provisional name) and other facilities, while excavation of the main tunnel began in the Nagano section of the Minami-Alps Tunnel. In the Kajigaya and Higashi-Yurigaoka sections of the First Tokyo Metropolitan Area Tunnel, where tunnels are being excavated deep underground using shield machines, exploratory excavation began to verify safety initiatives in practice, and construction progressed steadily in areas along the line.」

「Regarding the Chuo Shinkansen using superconducting magnetic levitation technology (hereinafter, the “superconducting maglev”), for the approved Shinagawa–Nagoya section, we proceeded with land acquisition and other activities. In terms of construction, we began full-scale construction at the newly designated Gifu Prefecture Station (provisional name), Nagano Prefecture Station (provisional name) and other locations, and began excavating the main tunnel at the Nagano section of the Minami-Alps Tunnel, making steady progress at locations along the route.」

「As for construction, full-scale work newly began at the Gifu Prefecture Station (provisional name) and other facilities, while excavation of the main tunnel began in the Nagano section of the Minami-Alps Tunnel, and work progressed steadily in areas along the line.」

「Regarding the Chuo Shinkansen using superconducting magnetic levitation technology (hereinafter, the “superconducting maglev”), for the approved Shinagawa–Nagoya section, we proceeded with land acquisition and other activities. In terms of construction, we began full-scale construction at the newly designated Gifu Prefecture Station (provisional name) and other locations, and began excavating the main tunnel at the Nagano section of the Minami-Alps Tunnel, making steady progress at locations along the route.」

「As for construction, full-scale work newly began at the Chubu General Rolling Stock Depot and other facilities. In the Kita-Shinagawa section of the First Tokyo Metropolitan Area Tunnel, where the tunnel is being excavated deep underground using a shield machine, exploratory excavation began to verify safety initiatives in practice. The main shafts of the Higashi-Yurigaoka and Kajigaya emergency exits in Kanagawa Prefecture, where construction was already under way, were completed. Work also progressed steadily in areas along the line, including the Aokigawa section of the Ina Mountain Tunnel in Nagano Prefecture and the Nishi and Higashi sections of the Fourth Minami-Koma Tunnel in Yamanashi Prefecture, where excavation of the main tunnels newly began.」

「Of these projects, the main shaft of the Higashi-Yurigaoka emergency exit in Kanagawa Prefecture was completed, while in the Aokigawa section of the Ina Mountain Tunnel in Nagano Prefecture, excavation of the inclined shaft was completed and excavation of the main tunnel newly began.」

「For the Shinagawa–Nagoya section, for which the construction implementation plan has been approved, surveying, design and land acquisition progressed through close coordination with local communities, and construction contracts were signed for the Nagano Prefecture Station (provisional name) and other facilities.」

「As for construction, full-scale work newly began on viaducts and other structures in Yamanashi Prefecture. In the Yamanashi section of the Minami-Alps Tunnel, where construction was already under way, excavation progressed on the inclined shaft, pilot tunnel and main tunnel, while in the Nagano section, excavation progressed on the inclined shaft and pilot tunnel. Construction girders and other structures were installed at Shinagawa and Nagoya stations, and work also progressed steadily on mountain tunnels, urban emergency exits and intermediate stations. Of these projects, the main shaft of the Sakashita emergency exit was completed, the first urban emergency exit in the Chukyo metropolitan area to be completed. In the Nishio section of the First Chukyo Metropolitan Area Tunnel in Aichi Prefecture, excavation of the inclined shaft was completed and excavation of the main tunnel began.」

「Of these projects, the main shaft of the Sakashita emergency exit was completed, the first urban emergency exit in the Chukyo metropolitan area to be completed.」

「As for construction, full-scale work newly began on viaducts and other structures in Yamanashi Prefecture. In the Yamanashi section of the Minami-Alps Tunnel, where construction was already under way, excavation progressed on the inclined shaft, pilot tunnel and main tunnel, while in the Nagano section, excavation progressed on the inclined shaft and pilot tunnel. Construction girders and other structures were installed at Shinagawa and Nagoya stations, and work also progressed steadily on mountain tunnels, urban emergency exits and intermediate stations.」

「Meanwhile, in the Shizuoka section of the Minami-Alps Tunnel, work has effectively remained at a standstill, as the company has been unable to secure the understanding of Shizuoka Prefecture and the municipalities in the Oi River basin regarding the impact on the river's water resources and has yet to begin developing the yards required before tunnel excavation.」

「For construction, we newly began full-scale work at the Inukura emergency exit in Kanagawa Prefecture, the Nishio section of the Dai-ichi Chukyo Metropolitan Area Tunnel in Aichi Prefecture, and the Kanagawa Prefecture Station (provisional name), the first intermediate station of its kind. At the Yamanashi section of the Minami-Alps Tunnel, where construction had already begun, we advanced excavation of the access, advanced and main tunnels, and at the Nagano section we advanced excavation of the access and advanced tunnels. We also carried out construction girder and other work at Shinagawa and Nagoya stations, while steadily advancing construction at mountain tunnels and urban emergency exits. At the Kita-Shinagawa emergency exit, the main shaft was completed, the first such completion at an urban emergency exit, and the shield machine for tunnel excavation from the emergency exit was completed, with preparations under way for its delivery.」

「For construction, we newly began full-scale work at the Inukura emergency exit in Kanagawa Prefecture, the Nishio section of the Dai-ichi Chukyo Metropolitan Area Tunnel in Aichi Prefecture, and the Kanagawa Prefecture Station (provisional name), the first intermediate station of its kind. At the Yamanashi section of the Minami-Alps Tunnel, where construction had already begun, we advanced excavation of the access, advanced and main tunnels, and at the Nagano section we advanced excavation of the access and advanced tunnels. We also carried out construction girder and other work at Shinagawa and Nagoya stations, while steadily advancing construction at mountain tunnels and urban emergency exits. The main shaft of the Kita-Shinagawa emergency exit was completed, the first such completion at an urban emergency exit.」

「Regarding the Chuo Shinkansen using superconducting magnetic levitation technology (hereinafter, the “superconducting maglev”), for the approved Shinagawa–Nagoya section, we advanced surveys, design and land acquisition while maintaining close cooperation with local communities, and signed construction contracts for the Nagoya Station Higashiyama Line section and the Kanagawa Prefecture Station (provisional name), the first intermediate station of its kind, among others.」

「Regarding the Chuo Shinkansen using superconducting magnetic levitation technology (hereinafter, the “superconducting maglev”), for the approved Shinagawa–Nagoya section, we advanced surveys, design and land acquisition while closely coordinating with the relevant local governments and communicating with local stakeholders. We also signed construction contracts for the Nagoya Station Higashiyama Line section and the Kanagawa Prefecture Station (provisional name), the first intermediate station of its kind, among others. For the Shizuoka section of the Minami-Alps Tunnel, we continued preparations for the start of future construction, including construction of accommodation facilities for construction workers and others. In terms of construction, we newly began full-scale construction at the Inukura emergency exit in Kanagawa Prefecture and the Nishio section of the Dai-ichi Chukyo Metropolitan Area Tunnel in Aichi Prefecture.」

「The outline of Construction Implementation Plan (2) for the Shinagawa–Nagoya section is as follows: 6. Construction cost: ¥4.8536 trillion (total construction cost: ¥5.5235 trillion, including rolling stock costs and excluding the existing Yamanashi Maglev Test Line section); 7. Scheduled completion year: 2027」

「For construction, we newly began full-scale work at the Higashiyukigaya emergency exit in Tokyo, the Todoroki emergency exit in Kanagawa Prefecture, and the Meijo substation in Aichi Prefecture. At the Yamanashi section of the Minami-Alps Tunnel, where construction had already begun, we advanced excavation of the access, advanced and main tunnels, and at the Nagano section we advanced excavation of the access tunnel. We also carried out diaphragm wall and construction girder work at Shinagawa and Nagoya stations, while steadily advancing construction at mountain tunnels and urban emergency exits. In addition, we received approval in October of the previous year to use deep underground space for the Shinagawa–Nagoya section of the Chuo Shinkansen.」

「We signed construction contracts for the Kita-Shinagawa section of the Dai-ichi Tokyo Metropolitan Area Tunnel and the Sakashita-Nishi section of the Dai-ichi Chukyo Metropolitan Area Tunnel, among others, where tunnels will be excavated deep underground using the shield method.」

「Regarding the Chuo Shinkansen using superconducting magnetic levitation technology (hereinafter, the “superconducting maglev”), for the approved Shinagawa–Nagoya section, we advanced surveys, design and land acquisition while maintaining close cooperation with local communities, and signed construction contracts for the Kita-Shinagawa section of the Dai-ichi Tokyo Metropolitan Area Tunnel and the Sakashita-Nishi section of the Dai-ichi Chukyo Metropolitan Area Tunnel, among others, where tunnels are excavated using the shield method deep underground. We also undertook preparations for the start of future construction, including signing a basic agreement with Shizuoka City on the construction of the Chuo Shinkansen (within the Shizuoka section of the Minami-Alps Tunnel) and regional development. In terms of construction, we began full-scale civil engineering work at the Higashiyukigaya emergency exit in Tokyo.」

「At the Yamanashi section of the Minami-Alps Tunnel, where construction had already begun, we began excavating the main tunnel in March following the access and advanced tunnels. We also excavated the access tunnel at the Nagano section and carried out diaphragm wall construction at Shinagawa Station (North and South sections), while steadily advancing construction at Nagoya Station, mountain tunnels and urban emergency exits. We further began full-scale civil engineering work at Shinagawa Station (the non-excavation section), the Sakashita emergency exit in Aichi Prefecture, and the Fourth Minami-Koma Tunnel in Yamanashi Prefecture. In September of the previous year, pursuant to Article 9 of the National Shinkansen Railway Development Act, we applied for approval of Construction Implementation Plan (2) for the Shinagawa–Nagoya section of the Chuo Shinkansen, focusing on electrical facilities, and received approval in March.」

「Regarding the Chuo Shinkansen using the superconducting maglev, for the approved Shinagawa–Nagoya section, we advanced surveys, design and land acquisition while maintaining close cooperation with local communities, and signed construction contracts for the Shizuoka section of the Minami-Alps Tunnel and other sections. We also held construction briefings to explain the construction outline, safety measures and other matters to local residents in sections for which construction contracts had already been signed, and undertook preparations for the start of future construction.」

「At the Yamanashi section of the Minami-Alps Tunnel, where construction had already begun, we began excavating the advanced tunnel in July following excavation of the access tunnel. We also excavated the access tunnel at the Nagano section of the Minami-Alps Tunnel and carried out diaphragm wall construction at Shinagawa Station (North and South sections), while steadily advancing construction at Nagoya Station, mountain tunnels and urban emergency exits. We further began full-scale civil engineering work at Shinagawa Station (the non-excavation section) and the Sakashita emergency exit in Aichi Prefecture. In September, pursuant to Article 9 of the National Shinkansen Railway Development Act, we applied for approval of Construction Implementation Plan (2) for the Shinagawa–Nagoya section of the Chuo Shinkansen, focusing on electrical facilities.」

「Regarding the Chuo Shinkansen using the superconducting maglev, for the approved Shinagawa–Nagoya section, we advanced surveys, design and land acquisition while maintaining close cooperation with local communities. We also held construction briefings to explain the construction outline, safety measures and other matters to local residents in sections for which construction contracts had been signed, and undertook preparations for the start of future construction. In addition, we excavated pilot tunnels at the Minami-Alps Tunnel (Yamanashi and Nagano sections), where construction had already begun, and carried out diaphragm wall construction at Shinagawa Station (North and South sections), while steadily advancing construction at Nagoya Station, mountain tunnels and urban emergency exits. We also began full-scale civil engineering work at Shinagawa Station (the non-excavation section) and the Sakashita emergency exit in Aichi Prefecture.」

「In addition, we began full-scale civil engineering work on the Minami-Alps Tunnel (Nagano section), the Hiyoshi Tunnel in Gifu Prefecture (Minamigaito section), Nagoya Station (Central East and Central West sections), and the construction of the Kajigaya emergency exit and materials access entrance in Kanagawa Prefecture, among other projects, all of which involve long construction periods and a high degree of difficulty.」

「In addition, we began full-scale civil engineering work on the Minami-Alps Tunnel (Nagano section), the Hiyoshi Tunnel in Gifu Prefecture (Minamigaito section), and the construction of Nagoya Station (Central East and Central West sections), among other projects, all of which involve long construction periods and a high degree of difficulty.」

「In addition to advancing construction of the difficult Minami-Alps Tunnel (Yamanashi section) and Shinagawa Station (North and South sections), both of which have long construction periods, we began full-scale civil engineering work for the construction of the Kita-Shinagawa emergency exit and the underground section of the substation facility.」

「For Construction Implementation Plan (1) for the Shinagawa–Nagoya section, we conducted centerline surveys to establish the route centerline and explained land requirements to landowners and others. We also signed construction contracts for Shinagawa Station (the non-excavation section), urban emergency exits and other facilities (2 locations), and mountain tunnels (1 location).」

「Total construction costs for the Shinagawa–Nagoya section are ¥5.5235 trillion, comprising the ¥4.0158 trillion construction cost in Construction Implementation Plan (1) plus the estimated cost of opening-related facilities scheduled for approval under Construction Implementation Plan (2), excluding the existing Yamanashi Maglev Test Line section.」