【环球时报赴哈萨克斯坦特派记者 赵觉珵】第二届中国—中亚峰会将在哈萨克斯坦首都阿斯塔纳举 行，此次峰会将为构建更加紧密的中国—中亚命运共同体注入新动能。就在峰会举行前几天，作为中国 与哈萨克斯坦共建"一带一路"合作标志性工程，阿斯塔纳轻轨项目首列列车完成吊装。该项目不仅是中 亚地区首条城市轻轨线路，还是该地区首条全部采用中国标准和中国装备建造的轨道交通项目。建成通 车后，线路两端的通勤时间可以缩短近一半。负责承建该项目的中国企业，正通过过硬的专业能力、负 责的履约精神以及令人惊叹的"中国速度"，为中哈以及中国与中亚合作增添新篇章。 符合当地发展需求 6月11日，由两节车厢组成的蓝色列车被成功吊装至阿斯塔纳轻轨项目101号车站。次日，第二组列车也 在另一车站完成吊装。"阿斯塔纳越来越堵了，轻轨赶快修好通车吧。"在被问及这一正在修建的轻轨项 目时，不少当地民众都对《环球时报》记者这样说。 根据哈萨克斯坦国家统计局发布的数据，2024年阿斯塔纳的人口增长率近7%，位居全国第一。目前， 阿斯塔纳人口约有150万，预计到2035年将增长至250万人。然而，这座城市在设计之初仅计划容纳60万 人。 近年来，随着越来越多人 ...

作为济南市区东西向的交通大动脉，4号线工程沿主干道经十路敷设，全长40.3公里，共设33座车站。全线铺轨总长度达85.074公里，施工规模宏大。项目 自启动以来，面临着线路长、工期紧、作业面分散且移交频繁、多处环境复杂（如山师东路站）以及密集交叉作业等多重挑战。特别是为了最大限度减少 施工对沿线环境的影响，攻克减振降噪等技术难题成为关键。面对这些挑战，4号线项目团队迎难而上，科学统筹，打出了一套"攻坚组合拳"。 施工期间，项目团队联合施工单位中铁十一局成立专项攻坚小组，大胆革新施工工艺。最具代表性的是将传统的现浇钢弹簧浮置板减振道床优化为预制拼 装工艺。这种创新不仅提升了施工精度和效率，更将有效降低未来地铁运行噪声10至14分贝，显著减少对周边环境的影响。同时，轨行区智慧调度系统的 运用，为多作业面协同施工提供了强大的技术支撑。 为抢抓工期，项目高峰期同时开辟了7个施工作业面，投入了3台轨道机车、14台智能化铺轨设备，组织了400余名建设者昼夜轮班奋战。通过周密部署和 动态优化施工计划，成功克服了作业面不连续等困难，创下了单日最高铺设轨道670米的佳绩。整个铺轨过程，安全与质量始终是重中之重，项目团队严 格落 ...

Group 1: Metro Line 2 Phase II - The main structure of Longchuan Road Station has successfully topped out, achieving multiple records and completing the main structure 20 days ahead of schedule [3] - The station is part of the 8.9 km underground Line 2 Phase II, which connects the eastern part of Licang District with the city center and is expected to enhance transportation convenience for residents [3] Group 2: Metro Line 5 - The construction of the section between Changle Road Station and Eight Number Pier Station has achieved a breakthrough in shield tunneling technology under complex geological conditions, with a settlement control precision of 0.54 mm [5] - The completion of the protective pile construction at Lake Island Station has laid a solid foundation for subsequent excavation and structural work, finishing 69 days ahead of schedule [5] Group 3: Metro Line 7 - The main structure of all 7 stations in the second phase of Line 7 has been topped out, marking significant progress and multiple firsts in the construction timeline [6] - This line will facilitate rapid north-south connectivity, enhancing urban rail transit and boosting economic development along the route [6] Group 4: Metro Line 9 - The successful tunneling of the "Yongxing No. 1" shield machine under the墨水河 marks a record for the longest waterway crossing (130 meters) in the construction of Qingdao Metro Phase III [7] - The first phase of Line 9 is a key east-west backbone line in northern Qingdao, with a total length of 16.63 km and 13 stations planned [7]

山大南路站至茂岭山路站区间地质条件复杂，且下穿窑头沟大桥。区间穿越线路上层为粉质黏土，下层为风化程 度不同的闪长岩，典型的"上软下硬"复合地层；区间在穿越窑头沟大桥期间，盾构掘进不仅遭遇了难以处理的高 强度孤石和建筑弃渣，还面临丰富的基岩裂隙水。更棘手的是，盾构机还需在浅覆土条件下穿越窑头沟及多条密 集排布的地下管线，盾构掘进沉降控制和安全风险极高。 面对复杂的地质条件和严苛的施工环境，由中铁上投总包部、济南轨道交通集团建投公司6号线项管部、中铁二局 项目部组成的项目团队迎难而上，提前周密调查沿线建筑物及管线情况，制定并落实精细化的施工方案和风险管 控措施，施工期间严格执行24小时领导带班制度，以高度的专业精神、精细化的管理和创新的技术手段全力攻 坚。项目团队科学制定掘进参数，对盾构姿态和管片拼装精度进行毫厘必争的控制。针对下穿窑头沟大桥的风 险，提前在河底施作抗浮板并对不良地层进行预加固，同时精细组织了高难度的开仓换刀作业，有效应对了孤石 和建筑弃渣回填不良地层挑战。 山茂区间的顺利贯通，不仅成功攻克了盾构穿越富水地层、高强度孤石、建筑弃渣、软硬复合地层等复杂地质施 工难题，并且确保了关键线路重大节点的突破 ...

Core Insights - The Shenzhen Metro Line 25 Phase I project has officially commenced the assembly of prefabricated components at Longhua Park Station, marking it as the first fully prefabricated rectangular metro station in the country, which will provide significant insights for industrialized construction in the metro sector [1][2] Group 1: Project Overview - The Line 25 Phase I project is a key component of Shenzhen's fifth-phase metro planning, stretching 16.5 kilometers with 14 stations, including 5 transfer stations and one vehicle depot [1] - Longhua Park Station is located at the intersection of Longguan Avenue and Longhua People's Road, featuring a two-level underground island station design with a total length of approximately 211 meters [1] Group 2: Construction Innovation - The project employs a rectangular fully prefabricated structural system, with major components such as the base slab, side walls, and roof being precisely prefabricated in a factory, with the heaviest component weighing up to 114 tons [1][2] - Advanced construction techniques include the use of a 180-ton gantry crane for high-precision lifting and an auxiliary cart for efficient assembly, resembling a "building block" approach [1] Group 3: Challenges and Solutions - The construction site faces significant challenges due to dense surrounding buildings, complex pipelines, and limited space [2] - To address these challenges, the company has implemented a millimeter-level precision control system for the gantry crane, along with intelligent positioning systems and hydraulic leveling devices to ensure high-precision placement of components [2] Group 4: Urban Impact - Upon completion, Line 25 Phase I will enhance connectivity with urban spatial structures and service core urban areas, supporting the development of key districts and improving transportation links for areas previously lacking rail access [2] - The project will also facilitate coordination with existing metro lines, maximizing network efficiency across the region [2]

Core Viewpoint - The construction of Jinan Metro Line 6 has reached significant milestones, with key sections successfully completed despite challenging geological conditions [1][9]. Group 1: Project Progress - The construction of Jinan Metro Line 6 has achieved double-line completion between Shanda South Road Station to Maoling Mountain Road Station and Jinan Station to Jiaan Street Station [1]. - All 32 stations along Line 6 have commenced construction, with 29 stations having their main structures topped out and 30 sections achieving double-line completion [1]. Group 2: Geological Challenges - The section between Shanda South Road Station and Maoling Mountain Road Station faces complex geological conditions, including soft upper layers of silty clay and hard lower layers of weathered diorite, along with high-intensity boulders and groundwater issues [3]. - The section from Jinan Station to Jiaan Street Station is characterized by unstable silty clay and gravelly silty clay, with some areas being water-rich, complicating the shield tunneling process [5]. Group 3: Innovative Construction Techniques - The project team has implemented a 24-hour leadership rotation system and conducted thorough investigations of surrounding buildings and pipelines to ensure safety and efficiency [5]. - Innovative techniques such as the earth pressure balance shield method and the "empty push over station" technology have been employed to enhance construction safety and efficiency [7][9]. - The use of "two initiations and two receptions" in tunneling operations has significantly reduced the impact on surface traffic and the surrounding environment [7]. Group 4: Future Implications - The successful completion of these sections not only addresses complex geological challenges but also sets a precedent for future shield tunneling projects in similar urban environments, providing valuable experience and techniques for broader application [9].

6月11日，天津地铁8号线建设迎来重大节点，其一期及延伸工程全线盾构区间顺利实现"洞通"，为后续 开通运营奠定了坚实基础。 作为天津首条采用全自动无人驾驶技术(GoA4级)的线路，8号线配备了全系统智慧运维健康管理系统。 线路西起西青区中北镇站，南至津南区渌水道站，全长23公里，设21座车站、21个区间，并新建绿水公 园主变电站。建成后将显著优化天津南部区域的交通网络布局。 据了解，线路建设过程中面临诸多世界级难题，堪称天津地铁建设史上的"挑战之王"。5次下穿河流、3 次下穿铁路、7次下穿运营地铁，还需与7条线路实现换乘，并预留远期4条线路换乘条件；沿线征拆任 务艰巨，周边建筑物与地下构筑物保护难度极高，全线特殊减振、高等级减振路段占比达65%。其中， 下瓦房站为天津市在建最深地铁站；澧水道站～梅江道东站区间联络通道长达61米，机械法联络通道施 工长度创全国之最。 建设团队介绍，面对复杂挑战，团队依托技术储备，综合运用全方位地质雷达探测、自动化实时监测系 统、精准沉降控制技术(如单侧定点补浆)和智能安全预警装置(感应语音、红外报警)等科技手段。"特别 是创新应用渣土改良工艺、优化盾构掘进参数、构建应急联动机制 ...

Core Points - The Tianjin Metro Line 8 has successfully achieved "tunnel completion" for all shield sections, marking a significant milestone in the construction of the line [1][2] - This line is the first in Tianjin to utilize fully automated driverless technology and is designed as a major transportation backbone in the southern urban area [1] - The project is implemented through an integrated "investment-construction-operation" model by China Railway Construction Corporation, involving multiple construction units [1] Summary by Sections - **Construction Progress** - All 21 station structures have been completed, and all 21 sections are now connected, with 17 out of 19 connecting passages finished [2] - **Operational Impact** - Upon opening, the line will connect four administrative districts: Nankai, Heping, Hexi, and Jinnan, enhancing accessibility to key areas such as Anshan West Road and Wudadao [2] - The line is expected to serve as a new engine for urban development, providing a more convenient, efficient, and green travel experience for residents [2] - **Technological Features** - The line is equipped with a state-of-the-art fully automated driving system (GoA4 level) and a comprehensive intelligent operation and maintenance management system to ensure safe and efficient operations [1]

近日，济南轨道交通4号线、8号线建设一线"节"报频传，4号线位里庄出入线至泉城公园站（以下均为工程名）区间实现"长轨通"；8号线彩龙路站至山东 现代学院站区间热滑试验也正式启动……项目建设加快推进。 4号线：位里庄至泉城公园站实现"长轨通" 作为贯穿济南主城区东西的交通大动脉，4号线工程线路长、站点多，施工环境复杂，尤其是铺轨作业面临战线绵长、作业空间受限、多专业交叉施工以 及减振降噪要求高等多重挑战。为确保工程如期推进，建设者们迎难而上，打响了铺轨攻坚战。 项目团队创新采用"机铺+散铺"组合施工模式，实施"双向对铺"，有效破解了空间狭小、交叉作业多的难题。施工高峰时期，全线同时开设8个作业面，8 台新型自变形轮式铺轨吊、8台自变形轮胎式罐车高效协同，创下了单日铺轨670米的速度纪录，大幅提升了施工效率。 为保障列车运行平稳舒适并降低环境影响，4号线关键区段采用钢弹簧浮置板道床技术，在轨道与道床间设"缓冲带"，利用弹簧压缩吸收振动能量，可降 噪10至15分贝。同时，建设者运用高精度闪光焊接技术，将全线长钢轨无缝锁定，焊接精度控制在3毫米内，大幅提升轨道平顺性，优化乘客乘坐体验。 云巴：动车调试加快推进 截至目 ...

Group 1 - Chengdu has issued its first high-temperature orange warning signal for 2025, marking the official start of the high-temperature period [1] - China Railway Construction has implemented effective measures to ensure construction safety and progress during extreme heat, including adjusting work shifts and prohibiting work when temperatures exceed 38°C [1][2] - The construction site is equipped with clean drinking water and cooling beverages, along with medical supplies to ensure the health of workers [1] Group 2 - Significant progress has been made in Chengdu's rail construction, including the successful electrification and transfer of the Chengdu Metro Line 13 Phase I, and the completion of major structures at various stations [2] - The labor unions at China Railway Construction will continue to enhance heat prevention measures and provide support to frontline workers to ensure their health and safety while advancing project construction [2]