央视网消息（新闻联播）：眼下，各地一批"十四五"重大工程项目稳步推进，助力经济社会高质量发展。 交通基础设施建设加快推进。日前，北京轨道交通22号线河北段正式开始铺轨，这是首条跨京冀的轨道交通线路，全长约81公里，共设22座车站，串联起北 京CBD核心区、北京城市副中心、河北燕郊开发区及平谷新城等区域。通车后，河北燕郊到达北京CBD最短时间约32分钟，京冀居民实现跨区域通勤再提 速。 眼下也进入到冬修水利的黄金期。作为我国"十四五"重大水利工程——山东临沂蒙河双堠水库施工加紧进行，目前工程进度已达75%，预计明年完工后，将 大大提升沂河流域防洪、供水、灌溉等功能，进一步保障农业和粮食安全生产。 在广东湛江，环北部湾广东水资源配置工程最大泵站水池即将封顶，该工程预计2031年通水，全长490多公里，届时将连通沿线12座水库，惠及1800多万 人。在四川南充，亭子口灌区一期工程正抓紧建设，预计2027年建成投运，届时将解决川东北地区370多万亩农田灌溉和400多万人的饮水问题。 在安徽，国家"八纵八横"高铁网沿江通道——巢马城际铁路全线开始铺轨，线路连接巢湖和马鞍山，预计明年建成，是皖江两岸的一条快速新通道，将进 ...

Core Points - The successful completion of the Ruoergai Tunnel marks a significant milestone in the construction of the Xining to Chengdu Railway, which is part of China's "Eight Vertical and Eight Horizontal" high-speed rail network [1][2] - The Xining to Chengdu Railway spans approximately 170 kilometers in Sichuan, with most sections at an altitude of around 3,500 meters [1] - The Ruoergai Tunnel, a single-hole double-track tunnel, is 2,176.92 meters long and designed for a speed of 200 km/h, presenting complex geological conditions and high construction risks [1] Construction Progress - As of now, the tunnel engineering in the Sichuan section of the Xining to Chengdu Railway has reached 66.2% completion, with five tunnels already connected [2] - Bridge engineering is 77.5% complete, and roadbed engineering is at 58.8%, indicating that all construction activities are progressing in an orderly manner [2] Investment and Economic Impact - The construction of the Xining to Chengdu Railway in the Sichuan section involves investment from Shudao Investment Group, and the completed railway is expected to greatly facilitate travel for local residents and promote economic and social development along the route [2]

Group 1 - The "Deep Sea No. 1" Phase II project has been fully put into operation, marking it as the largest offshore gas field in China, capable of supplying over 4.5 billion cubic meters of natural gas annually to the Guangdong-Hong Kong-Macao Greater Bay Area and Hainan [1] - The "Deep Sea No. 1" gas field has a proven geological reserve of over 1500 billion cubic meters and operates at the deepest water depth and highest temperature and pressure conditions in China, with a maximum temperature of 138 degrees Celsius [1] - The Shaanbei to Anhui ±800 kV UHVDC transmission project has commenced the core equipment electrical installation phase, with a total length exceeding 1000 kilometers and expected to deliver over 36 billion kilowatt-hours of electricity annually to Anhui by mid-2026 [1] Group 2 - The construction of the Chongqing to Chengdu high-speed railway's main navigation hole bridge has entered the steel beam construction phase, with the bridge being a key node for the railway and expected to be fully operational by 2027 [2] - The Jin-Ha Highway expansion project in the Panjin section has achieved mainline connectivity, spanning 238 kilometers and set to become the first long-distance ten-lane highway in northern China upon completion [2] - The construction of the station building for the Xining to Chengdu railway in Sichuan has commenced, which is a significant part of China's "eight vertical and eight horizontal" high-speed rail network, aimed at promoting economic and social development along the route [2]

Core Points - The construction of the Hongyuan Station, part of the Xining to Chengdu Railway in Sichuan, has officially begun, marking the start of the station building project [1][5] - The Xining to Chengdu Railway is a crucial segment of China's "eight vertical and eight horizontal" high-speed rail network, connecting Lanzhou and Xining to Guangzhou [3][8] - The Sichuan section of the railway spans approximately 170 kilometers, featuring five new stations before entering Gansu province [3] Construction Challenges - The Hongyuan Station is located in a high-altitude area, with construction sites at elevations above 3,500 meters, presenting challenges such as hypoxia, harsh weather, and significant temperature fluctuations [6] - The project also faces environmental concerns, including ecological sensitivity and resource shortages, necessitating a detailed construction plan and resource management strategy [6] Technological Integration - The project employs BIM technology for comprehensive visualization and precision management throughout the construction process, enhancing safety through various monitoring systems [6] Economic Impact - Upon completion, the railway will significantly improve travel conditions for cities along the route, fostering collaboration between the Lanzhou-Xining and Chengdu-Chongqing urban clusters, and contributing to the "Belt and Road" and "Yangtze River Economic Belt" initiatives [8]