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一 | Kyiv, Oct 18 (UNI) Russian forces have again targeted Ukraine's energy facilities, leaving part of Kyiv and other cities with no power and water.
Explosions were heard in the capital shortly after 9 am and plumes of smoke billowed from around a power station near the Dnipro river, the BBC reported.
Power and water were cut in Zhytomyr, west of Kyiv, and two facilities were badly damaged in Dnipro.
The latest attacks came 24 hours after Kyiv was hit by "kamikaze" drones on Monday.
The unmanned drones, believed to be Iranian-made, killed at least five people in the capital and four in the northern city of Sumy, and struck critical infrastructure, with power outages reported in hundreds of towns and villages.
Russia has stepped up attacks in recent weeks on electricity infrastructure in cities away from the front lines.
Officials have rushed to repair the damage, but the strikes, ahead of winter, have raised concerns about how the system will respond, the BBC said.
"Ukraine is under fire by the occupiers. They continue to do what they do best - terrorise and kill civilians," said President Volodymyr Zelensky in response to the attacks.
It was not initially clear to what extent drones were involved, although Kyrylo Tymoshenko, deputy head of the presidential office, said an S-300 anti-aircraft missile was fired at a residential building in the southern city of Mykolaiv overnight, killing one person. The city's flower market was also destroyed.
Early on Tuesday, the Zhytomyr mayor said there was no power or water in the city and hospitals were working on back-up power.
Power and water supplies were also disrupted in the central city of Dnipro and officials appealed to residents to use power sparingly
Shelling was reported in the north-eastern city of Kharkiv. Infrastructure in the southern city of Zaporizhzhia was also hit, although local officials said no-one had been hurt.
In some cities, Ukrainians are buying power generators and gas burners, while across the country, people have been urged to reduce their energy consumption at peak times. Some towns are already facing rolling blackouts, the BBC report added.
The latest attacks, by both missiles and drones, have brought renewed calls from the Ukrainian government for the delivery of air defence missiles.
UNI ING。
二 | 人民网北京4月19日电 （记者王仁宏）近日，经过136辆总重约5000吨的大货车组的重压测试，中交二航局参建的深中通道伶仃洋大桥完成动静载试验，这是世界首次在全离岸海中超大跨径悬索桥上完成的荷载试验。此前，深中通道中山大桥、非通航孔引桥已完成荷载试验。深中通道桥梁工程顺利通过“大考”，朝着今年6月具备通车条件又迈进关键一步。深中通道是世界级“桥、岛、隧、水下互通”跨海集群工程，全长约24公里。其中，桥梁工程总长约17公里，包括伶仃洋大桥（悬索桥）、中山大桥（斜拉桥）和非通航孔引桥。荷载试验是大桥通车前必须经历的关键环节，分为静载试验和动载试验。通过等效模拟通车后的荷载情况，现场测试桥梁各部位的反应数据，判断桥梁承载能力是否符合设计要求和相关规范要求，为今后长期健康监测提供初始数据，也为日后养护、管理的决策提供科学依据和支持。据悉，在最大荷载工况的伶仃洋大桥静载试验过程中，136辆总重约5000吨大货车分批行驶上桥，按照17行×8列的要求停放在桥面预先划定的停靠点，进行分级加载，实测主梁、主塔、主缆和吊索的位移和应变，并与理论值进行比较，从而评估桥梁工作性能。
三 | 在动载无障碍行车试验中，两辆满载共70吨、相当于约45辆小汽车重量的载重卡车，以每小时10至60公里不等的时速在大桥上匀速行驶，通过布置在中跨中断面的动应变传感器，测试结构在行车荷载作用下的动力反应，分析得到桥梁的冲击系数。
四 | “从目前掌握的数据来看，深中通道伶仃洋大桥、中山大桥、非通航孔引桥的实测值均小于理论值，且大部分指标富余较大。这意味着，深中通道桥梁工程不仅通过‘体检’，还可以说是在‘体能达标测试’中取得了不错的成绩。”广东交通集团深中通道管理中心副主任姚志安表示。目前，深中通道的机电、交安、路面、房建附属等工程正在全力推进，为6月具备通车条件冲刺。项目建成通车后，深圳至中山的车程将从目前的约2小时缩短至30分钟内。
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