Core Points - The Jinan Metro Line 4 has commenced trial operation, which will enhance the overall metro network in Jinan [1] - The line, constructed by Jinan Metro Group and China Railway 14th Bureau, spans 40.3 kilometers and runs through densely populated areas along Jinan's main thoroughfare, alleviating traffic pressure [2] - The construction faced challenges due to spring water protection and complex karst geological conditions, with approximately 300 caves in a 1-kilometer section [2] - The construction team prioritized environmental protection by developing new eco-friendly materials and creating a diversion channel system to minimize impact on the underground environment [2] - Jinan Metro Line 8 also began trial operation on the same day, which will connect with Line 4, contributing to the alleviation of east-west traffic congestion and promoting economic development in the region [2]

8号线西起邢村站东至清源大街站，全长25.3公里，设地下站3座，地上站11座，途经历城区、高新区和章丘区，沿经十东路走行，连接中国(山东)自贸试 验区济南片区、齐鲁科创大走廊、章丘大学城、明水经济技术开发区等区域，沿线高校、科研院所、企业众多，开通后对方便沿线市民出行、促进中心城 区和东部城区协同发展具有重要意义。 空载试运行是轨道交通由建设阶段过渡到运营阶段的关键环节。在接下来为期三个月的试运行中，济南轨道交通集团将模拟真实运营环境，开展多系统联 动测试，包括车辆、轨道、信号、供电等核心设备的综合验证，并组织各类应急演练、人员培训及规章制定，全面检验系统安全性、稳定性和可靠性，为 正式开通运营做好充分准备。 4、8号线的建设特点，突出体现为科技引领与绿色低碳深度融合。4号线成功攻克超硬岩层、密集建筑群等复杂条件。8号线着力打造全国绿色城市轨道交 通示范工程，在两座地下站应用"永临一体""预制叠合"绿色建造技术，单座地下站实现二氧化碳减排约3400吨；山东大学站采用光伏一体化设计，预计年 发电量达18万千瓦时，充分体现"绿色地铁"理念。 空载试运行期间，济南轨道交通集团将统筹推进4、8号线系统调试、运营演练、 ...

Group 1 - The Jinan Metro Line 4 and Line 8 have successfully passed project engineering acceptance, indicating readiness for trial operation [1] - Line 4 is scheduled to start a three-month trial operation on August 31, with an expected opening by the end of 2025 [1] - Line 8's first phase has begun dynamic debugging in June, with a total length of 25.5 kilometers and 14 stations, aiming for operation by the end of this year [1][2] Group 2 - The Jinan Metro Line 6 East Section, a key project in the city's transit network, has made significant progress, with dynamic debugging entering the final phase [2] - The East Section of Line 6 spans approximately 19.5 kilometers with 17 underground stations, focusing on seamless integration of various systems [2] - The High-tech East District Yunba project has commenced a three-month trial operation, expected to open in early December, featuring a unique design and energy-efficient technology [2][3] Group 3 - The Yunba project will connect to the Jinan Metro network through five transfer stations, enhancing commuter convenience and addressing public transport congestion [3] - The Jinan Metro Group is committed to standardizing construction and expediting station renovations and safety assessments to ensure timely operation of all lines [3]