Core Viewpoint - The construction of various transportation projects in Sichuan is progressing rapidly during the National Day and Mid-Autumn Festival holidays, with a focus on innovation and efficiency in project execution [3][4][5]. Group 1: Transportation Projects - The Chengdu-Ziyang Railway Tianfu Station project has over 800 workers on-site, with multiple construction processes such as metal roofing and interior decoration being carried out simultaneously [4]. - The Chengdu-Ziyang Railway's core traction substation has completed its topping out, marking a significant milestone in the project's electrical engineering phase [5]. - The G5 Jingkun Expressway expansion project has commenced, aiming to complete 900 kilometers of highway construction by the end of the year, contributing to a total highway mileage of over 11,000 kilometers in Sichuan [6]. Group 2: Innovative Construction Techniques - The Tianfu Station project has adopted a novel directional interchange prefabricated box girder technology, which allows for a construction time savings of over two months compared to traditional methods [5]. - The use of Building Information Modeling (BIM) technology in the Chengdu-Ziyang Railway project helps in preemptively addressing structural and pipeline layout issues, thereby reducing construction risks [5]. Group 3: Hydropower and Waterway Projects - The Minjiang River hydropower project at Longxikou has completed its main engineering works, with all nine generator units constructed, and is now focusing on the construction of four dams and associated facilities [7].

夹金山隧道串联起夹金山、达维会师遗址等革命纪念地和碧峰峡、四姑娘山等优质生态景区，将有力促 进雅安市与阿坝州之间经济互济、人文互通。 曾经艰险的"长征路"逐渐变为通途。1935年6月，中央红军长征行军至夹金山，他们直面恶劣环境、不 畏高寒缺氧，以顽强毅力和信念突破自然极限，成功翻越大山，在懋功（现小金县）与红四方面军胜利 会师。红军长征飞夺泸定桥的大渡河上架起高速公路大桥，过草地的松潘开通了动车，现在爬过的大雪 山也通了隧道，一张更加快速高效的交通网络正加快形成。 建设过程中，建设团队首创采用平行导洞"TBM+钻爆法"及主洞钻爆法综合施工工法，在高原高寒环境 中创造了TBM日掘进50米等多项普通公路隧道施工纪录，并提前3个月完工。 新华社成都9月28日电（记者胡旭、胥冰洁）历经45个月艰苦鏖战后，川西高原长9.35公里的国道351线 夹金山隧道于9月28日顺利建成，并将于10月1日开通试运行。周边11万群众冬季冰雪封山难以通行的世 代难题将彻底解决。 （文章来源：新华社） 夹金山位于四川省雅安市宝兴县与阿坝藏族羌族自治州小金县交界。海拔4000多米的夹金山常年积雪、 气候多变，原道路弯多、坡陡、路窄，每年冬季 ...