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China, Russia launch fourth joint Arctic scientific expedition, process lasts about 62 days: report_我的网站

A |     近日，随着沈海高速公路大连方向30公里处施工点位工作结束，2024年辽宁高速公路大规模维修工程全部完工。         　　据辽宁交投高速运营公司相关负责人介绍，本次工程涉及全省10条高速公路近4000单车道公里维修里程。工程完工后，全省高速公路通行环境得到极大改善，道路行驶质量、桥梁安全性能和交安设施防护能力等全面提升。

B |          　　据介绍，截至2023年底，我省高速公路总里程4409公里，其中通车运营10年以上的达3664公里，占总里程的83.1%。高速公路网路龄结构总体偏长，路况指标处于较快衰减期，设施设备进入大范围更新期。    

A Russian scientific expedition vessel docks at the port in Russia’s Far Eastern city of Vladivostok. Photo: Xinhua
The fourth China-Russia joint Arctic expedition was launched on Thursday in Russia’s Far Eastern city of Vladivostok. Scientists from both countries will conduct major frontier basic research on the rapid climate changes in the Arctic region, focusing on the area from the Northwest Pacific to the Arctic Ocean, Xinhua News Agency reported on Thursday. Nine people from China will participate in the voyage. 
At the launch ceremony, Wei Zexun, director of the First Institute of Oceanography, Ministry of Natural Resources (MNR), said the joint expedition will focus on the waters of the Northwest Pacific and the Arctic Ocean, further deepening scientific understanding of ocean dynamic processes, climate change patterns, and marine ecosystems in the study areas. It is not only a concrete measure to implement the cooperation consensus between China and Russia in the marine field, but also a vivid example of the two countries’ comprehensive strategic partnership of coordination in marine science and technology in the new era.
According to Du Libin, executive dean of the College of Ocean Science and Engineering, Shandong University of Science and Technology, the Arctic is highly sensitive to global climate change, and a frontier for ocean science, playing a key role in the “Polar Silk Road” initiative and China-Russia polar marine cooperation.
The joint expedition will highlight deeper marine research cooperation and innovation, while advancing polar scientific exploration and practical collaboration between the two countries, Du said. 
According to Zou Jianjun, chief Chinese scientist of the scientific expedition team and a researcher at the First Institute of Oceanography, MNR, the expedition will last about 62 days. The scientists will conduct multidisciplinary surveys in the Chukchi Sea, East Siberian Sea, Lomonosov Ridge, Makarov Basin, and Amundsen Basin to study changes in the marine environment of these regions amid rapid climate change and reveal their response processes and feedback mechanisms in relation to global climate change. 
A representative from the Pacific Oceanological Institute (POI), Far Eastern Branch of the Russian Academy of Sciences, said during the ceremony that the joint expedition is expected to strengthen Russia-China ties and expand cooperation in the Arctic and Pacific regions. 
As freight volumes along the Arctic shipping route are steadily increasing, and the role of Arctic shipping route in the global economy is becoming increasingly important, comprehensive scientific research of the region has become necessary.
Global Times
。作为我省高速公路运营管理部门，高速运营公司虽每年都投入一定的资金等应用于道路养护，但常规养护作业仅能维持其运行基本功能。         　　眼下，技术、设备等软硬件更新迭代加速，人民群众美好出行愿望日益强烈，高速公路服务供给能力更需进一步加强和提升。为打造可靠耐久的公路基础设施供给体系，服务公众安全便捷出行，今年，高速运营公司投资21亿元，对我省高速公路实施了创出管养历史之最的大规模路面维修改造工程，即年度内维修规模最大、投资额度最高、实施里程最长、覆盖面积最广。工程于5月15日开工，历时136天，比预计工期提前20天完工。在实施过程中，运营公司克服同期实施工程体量大、施工点位众多且分散、边通车边施工等困难，在施工组织、质量控制、安全管理、新技术应用等方面积极采取系列举措，高标准高质量实现了预期目标。         　　据介绍，此次高速公路大规模维修工程广泛应用新技术新工艺，不但节约了开支，也为行业提供了可借鉴经验。如沈大、丹海、盘海营项目双向484公里施工中，全面应用公司自主研发的“路面旧料精细分离+大比例厂拌热再生”和3D铣刨摊铺技术及工艺，共利用路面旧料35.8万吨，减少砂石开采32.6万吨、新沥青生产1.5万吨，降低碳排放量3.6万吨，降低工程造价7400万元，占工程总造价的6.6%，该技术在全国范围内处于领先水平。                    责任编辑：李丹。

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Published on:14:52:46