CRCHI(SH:688425) Chang Sha Wan Bao·2025-12-23 13:42Core Viewpoint - The first dual-mode vertical shaft tunneling machine "Weiheng" has been successfully launched in Changsha, which will be used for the power relocation project in Fengxiang Bay, Nanzhuang Town, Foshan City, Guangdong Province [1][3]. Group 1: Machine Specifications and Innovations - "Weiheng" has a drilling diameter of 14.2 meters and will be utilized for the construction of starting and receiving shafts [3]. - The project employs a 1.2-meter thick cast-in-place wall technology for the first time in the country, integrating traditional casting methods with new mechanical tunneling techniques, which is expected to significantly shorten the construction cycle [3]. - The machine is equipped with a heavy-duty cutting and excavation system and an efficient mud-water discharge system, with optimizations in underwater sealing and main engine vibration resistance to ensure smooth project progress [3]. Group 2: Company and Industry Leadership - The company, China Railway Construction Heavy Industry, has been leading the development of vertical shaft tunneling technology, having previously developed the world's largest vertical shaft tunneling machine "Dream" and the deepest one "Steel Backbone" [3]. - The company aims to continue its operations in Changsha and produce more "national heavy equipment" to provide new solutions for modern urban intensive and intelligent construction, as well as deep earth strategic space development [3].