据微信公众号"国家铁路局"消息，11月14日，国家铁路局发布通报称，针对近日媒体关注的银巴铁路桥梁用橡胶材料"以次充好"问题，兰州铁路监管局高度 重视，立即成立调查组，赶赴现场开展调查核实。 日前，新华社旗下《经济参考报》调查发现，中国铁建旗下中铁十六局在施工过程中，使用的一种桥梁用橡胶材料疑似存在质量问题。记者现场随机抽取的 多处已铺设三元乙丙橡胶板能轻易被割开、扯断。送检结果显示其拉伸强度仅为1.78MPa，仅为标准（"≥12MPa"）的15%，主要成分为性能较差的异戊二烯 橡胶，而非合同要求的三元乙丙橡胶，且部分产品无厂家标识，涉嫌以次充好。 据了解，三元乙丙橡胶板铺设在铁路桥两侧钢横梁上，能避免混凝土电缆槽和钢横梁两个刚性结构之间的直接接触，使受力均匀，起到缓冲、防水和延长桥 体使用寿命的作用。 | 序号 | 项目 | | 单位 技术要求 试验方法 | | | --- | --- | --- | --- | --- | | 1 | 邵A硬度 | 度 | રેરેન્દ | GB/T 531.1 | | 2 | 拉伸强度 | MPa | ≥12 | GB/T528 | | 3 | 拉断伸长率 | 0/0 ...

Core Viewpoint - Recent investigations revealed potential quality issues with rubber materials used in the construction of the Yinba Railway, specifically concerning the inferior quality of ethylene propylene diene monomer (EPDM) rubber sheets, which could pose safety risks and affect the longevity of bridge structures [1][6][18]. Group 1: Quality Issues - Investigative reports indicated that the EPDM rubber sheets could be easily cut and torn, with laboratory tests showing a tensile strength of only 1.78 MPa, which is merely 15% of the required standard of ≥12 MPa [6][9][18]. - The materials tested were found to be primarily made of isoprene rubber rather than the specified EPDM, raising concerns about their durability and performance under harsh conditions [9][18]. - The presence of rough edges and irregularities in the rubber sheets suggested that they may not meet the quality standards expected for EPDM products [9][18]. Group 2: Regulatory Response - The National Railway Administration responded to media reports by forming an investigation team to verify the claims regarding the substandard rubber materials used in the railway project [1][18]. - The project manager from China Railway 16th Bureau expressed a lack of understanding regarding the material properties and stated that they relied solely on inspection reports to accept the materials [10][15][18]. Group 3: Financial Impact - Following the news of the quality issues, shares of China Railway Construction Corporation (601186.SH) experienced a slight decline, closing at 7.97 yuan, with a year-to-date drop exceeding 10%, resulting in a total market capitalization of 108.2 billion yuan [4].

Core Viewpoint - Recent investigations revealed potential quality issues with rubber materials used in the construction of the Yinba Railway, specifically concerning the EPDM rubber sheets supplied by China Railway Construction Corporation's subsidiary, China Railway 16th Bureau Group [2][5][17]. Group 1: Quality Issues - The EPDM rubber sheets were found to be easily cut and torn, with testing showing that their tensile strength was only 1.78 MPa, which is 15% of the required standard of ≥12 MPa [5][8][17]. - The material analysis indicated that the rubber was primarily isoprene rubber rather than the specified EPDM, which has inferior weather resistance and a shorter lifespan [8][17]. - The presence of rough edges and "fuzz" on the rubber sheets suggested that they were not manufactured to the expected quality standards [8][17]. Group 2: Regulatory Response - The National Railway Administration responded to media reports by forming an investigation team to verify the quality issues raised regarding the rubber materials used in the Yinba Railway [2][5]. - The project manager from China Railway 16th Bureau Group acknowledged a lack of understanding regarding the material properties and stated that they relied solely on inspection reports for quality assurance [10][15]. Group 3: Procurement and Compliance - The project had previously issued a procurement announcement for approximately 25,000 EPDM rubber pads, with 9,000 already delivered in three batches, all of which were reported as compliant based on inspection results [11][14]. - There is a discrepancy between the inspection results, with some reports indicating compliance while others reveal significant deficiencies, raising concerns about the quality control processes [15][17]. - The procurement announcement explicitly prohibited the use of recycled rubber in the EPDM sheets, yet the materials in question appeared to be substandard [17].

Core Viewpoint - Recent investigations revealed potential quality issues with rubber materials used in the construction of the Yinba Railway, specifically concerning the EPDM rubber sheets, which may compromise bridge safety and longevity [1][6][18]. Group 1: Quality Issues - The rubber sheets tested were found to be easily cut and torn, with a tensile strength of only 1.78 MPa, which is just 15% of the required standard of ≥12 MPa [6][8][18]. - The material analysis indicated that the rubber was primarily isoprene rubber rather than the specified EPDM, which has inferior weather resistance and durability [8][18]. - The presence of rough edges and irregular particles in the rubber sheets suggests that they may not meet the quality standards expected for EPDM products [8][18]. Group 2: Regulatory Response - The National Railway Administration has taken the issue seriously, forming an investigation team to verify the claims regarding the substandard rubber materials [1][6]. - The project manager from China Railway 16th Bureau expressed a lack of understanding regarding the material properties and relied solely on inspection reports for quality assurance [9][16]. Group 3: Financial Impact - Following the news, shares of China Railway Construction Corporation (601186.SH) experienced a slight decline, closing at 7.97 yuan, with a year-to-date drop exceeding 10%, resulting in a total market capitalization of 108.2 billion yuan [4].

进入10月以来，一批重点在建工程项目取得积极进展，盘州至兴义高铁进入运行试验阶段，广州至湛江高铁广州至新兴南段进入联调联试 阶段，西安东站站房主体结构顺利完工，成都至达州至万州高铁遂宁涪江特大桥顺利合龙，潍坊至宿迁高铁青岛连接线多项关键节点取得突 破。 下一步，国铁集团将积极推进重点工程建设，确保高质量完成全年铁路建设投资任务，实现"十四五"圆满收官。 央视网消息：记者14日从国铁集团获悉，今年1至10月，全国铁路完成固定资产投资6715亿元，同比增长5.7%。 今年以来，国铁集团科学有序推进铁路规划建设，加快构建世界一流现代化铁路网，先后建成投用了沈阳至佳木斯高铁沈阳至白河段、襄 阳至荆门高铁等一批新线、新站，进一步提升了路网通达性和覆盖面，促进了区域高水平互联互通。 ...

Core Viewpoint - The completion of two new stations on the Panxun High-Speed Railway marks a significant step towards the full operation of the line, which is expected to open by November 30, 2025, facilitating high-speed rail connectivity across Guizhou province [2][4]. Group 1: Project Overview - The Panxun High-Speed Railway is a crucial project for Guizhou, being the last piece needed to achieve "city-to-city" high-speed rail connectivity in the province [4]. - The railway spans approximately 98.3 kilometers with a design speed of 250 km/h and a total investment of 13.97 billion yuan, co-funded by China Railway Corporation and the Guizhou provincial government [6]. - The line includes three stations: Panxun, Baotian, and Xinyi South, with Baotian and Xinyi South being newly constructed [6]. Group 2: Economic Impact - Once operational, the railway will reduce travel time from Guiyang to Xinyi to about 2 hours, creating a high-speed rail traffic circle within 1 to 2 hours to eight cities in the province [5]. - The project is expected to enhance regional connectivity, promote economic and social development, and establish a high-speed tourism corridor between Guiyang and Xinyi [5]. Group 3: Strategic Importance - The completion of the Panxun High-Speed Railway will increase Guizhou's high-speed rail mileage to 1,906 kilometers, making it the second province in the western region to achieve "city-to-city" high-speed rail connectivity [13]. - The development aligns with national strategies and local economic needs, supported by significant investments and planning from the provincial government [13][14]. Group 4: Construction Challenges - The railway construction faced significant challenges due to the complex geological conditions in the karst mountainous region of southwestern Guizhou, with 90.44% of the line consisting of bridges and tunnels [16]. - The Baotian Tunnel is identified as a high-risk, critical control project due to its complicated geological conditions, requiring advanced monitoring and construction techniques [18]. Group 5: Future Prospects - The development of high-speed rail logistics is anticipated to optimize and upgrade the industrial structure in Guizhou, enhancing its integration into national and international markets [21]. - High-speed rail logistics will significantly promote economic interconnectivity between Guizhou and surrounding regions, positioning the province as a key logistics hub in the southwest [22].

Group 1 - The Ximandu iron ore project has officially commenced production, marking a significant milestone in the development of mineral resources in Africa [1] - The railway connecting the Maribaya Port to the Ximandu mining area is approximately 600 kilometers long and is the longest modern railway built in Guinea since the 1970s [1] - The project involves a total investment of over 20 billion USD and includes comprehensive systems such as mining, railways, and ports [1] Group 2 - China has led the formulation of 1,079 international standards since the beginning of the 14th Five-Year Plan, enhancing the global influence of Chinese standards [2] - The promotion of over 500 standards for mutual recognition between China and other countries reflects the growing international cooperation and soft power of China [2]

记者从驻津央企中铁四局三公司获悉，我国西煤东运第二大通道——朔黄铁路243A#钢桁梁整修工 程11日顺利完成。此次施工创新采用全国首例"卷扬机纵移+千斤顶横移"结合技术，为繁忙干线"不停 运、少停运"条件下实施桥梁改造，积累了重要实践经验。 朔黄铁路西起山西神池，东至河北黄骅港，是京津冀、环渤海、华东乃至华南地区能源供应的关键 通道。该线路的煤炭运输直接关系沿线电厂、企业生产及居民用电稳定，对保障国家能源安全与经济平 稳运行具有战略意义。 施工过程中，中铁四局项目团队创新采用"纵移+横移"的精准施工方案：纵移采用16吨慢速卷扬机 通过"横梁+滑块"进行牵引移动；横移则采用2台100吨连续式千斤顶在预设横向滑道上进行顶推就位。 "该工程的顺利完工，不仅彻底消除因桥梁结构老化带来的安全隐患，显著提升了桥梁的承载能力 与耐久性，也进一步提升了这条能源大动脉的通行能力和安全冗余度。"项目相关负责人表示，在保障 铁路运输安全的同时，此次实践也验证了在复杂运营条件下，对大跨度、重吨位桥梁实施高效、精准改 造的先进工艺，为我国同类繁忙干线铁路的维修改造提供了有益范本。 此次整修的朔黄铁路243A#钢桁梁建成投用于2004年 ...

中铁上海工程局沪宁合高速铁路南京枢纽项目党支部副书记文金华介绍，沪宁合高速铁路南京枢纽 站前2标项目进入攻坚阶段，随着沪宁合高速铁路南京特大桥跨滁河斜拉桥主塔封顶等关键节点完成， 项目累计产值突破总造价的60%，目前整个项目的桥梁下部工程基本完工，上部结构施工全面快速推 进。 沪宁合高速铁路是国家高铁通道承东启西的重要枢纽，是长江经济带综合交通枢纽建设的重大工 程，也是南京构建直连全国的"米"字形高速铁路网络的关键节点。项目建成后，对打造"轨道上的长三 角"、优化沿江地区铁路网布局等具有重要意义。 新建上海至南京至合肥高速铁路(简称"沪宁合高速铁路")南京枢纽项目建设按下"加速键"。11日， 该项目"抢进度、抓节点、保架梁"劳动竞赛启动仪式在南京市六合区举办。 作为中国"八纵八横"高速铁路网沿江高铁通道的重要组成部分，沪宁合高速铁路是沪渝蓉高速铁路 的东段线路，起自上海市新建上海宝山站，经江苏省苏州市、南通市、泰州市、扬州市、南京市，以及 安徽省滁州市、合肥市，接入既有合肥南站，线路全长约554公里，设计时速350公里，全线设16座车 站。 ...

Core Viewpoint - The completion of the last pile foundation for the Yichang Three Gorges Port Railway project marks a significant milestone, ensuring the timely advancement of subsequent engineering work [1] Project Overview - The Yichang Three Gorges Port Railway project is located in Yichang City, Hubei Province, with a total length of 11.99 kilometers, including 8 bridges, 3 tunnels, and 1 station, resulting in a bridge-tunnel ratio of 86% [1] - A total of 801 pile foundations were constructed, overcoming challenges such as complex geological conditions, extensive work areas, and high technical difficulties [1] Construction Achievements - The project team effectively coordinated with various units, optimized construction plans, and strengthened process control to successfully complete all pile foundation tasks [1] - The completion of the pile foundations lays a solid foundation for the project's future progress [1] Economic and Political Significance - The Yichang Three Gorges Port Railway project is crucial for improving the comprehensive transportation system of the Three Gorges area, establishing a water-rail intermodal logistics system, and extending the coverage of the national railway network [1] - Once completed, the project will significantly alleviate bottlenecks in Yangtze River shipping, holding important political and economic implications [1]