State Grid Corporation of China has become the world’s No.1 in installed capacity of grid connection and highest in voltage level, and the only super-large power grid that has not experienced large-scale blackout in recent 20 years.
The next step will be to upgrade the power grid to the energy Internet, with R&D spending reaching 16 billion yuan ($2.3 billion) by 2025, an increase of two-thirds over 2019.
Southwest China’s Tibet Autonomous Region had constructed asphalt roads in all its counties by August, the regional transport department said.
The region had also built hard roads in 86.4 percent of its townships and 61.4 percent of administrative villages. So far, it has rebuilt 38,200 km of rural highways, and 86,000 km of rural highways have been opened to traffic, according to the department.
Tibet has a huge amount of land, harsh natural environment and poor transportation conditions due to historical reasons. By the end of 2015, highways had not reached two townships and 230 administrative villages in the region, said Xu Wenqiang, director of the department.
The region has seen accelerated development in rural road construction and transportation in farming and pastoral areas in the last five years. Passenger transport network has also improved in Tibet, with 74 counties, 476 townships and 2,050 administrative villages accessible by buses, Xu added.
So far, 547,000 people have been employed in highway construction projects. Farmers and herdsmen have seen their income increase by 13.72 billion yuan (about 2 billion U.S. dollars) in total, said Tashi Norbu, who works for the rural highway office of the regional transport department.
福建龙岩市龙岩大桥 The bridge had undergone its first rotation a little over four months ago. The bridge tower was rotated 69-degree the first time to allow the completion of the bridge deck installation.
At around 2:30 a.m. the cable-stayed bridge and deck with a total weight of 23,600 tons completed a 21-degree counterclockwise rotation, it took about an hour. It is the first time in the world for the “second horizontal rotation” construction process.
The reason for the second rotation is because there’s a “double risk” in the construction of the Longyan Bridge.
The first is that the Longyan Bridge will cross the existing Ganlong Railway and Longxia Railway 赣龙铁路、龙厦铁路 . Nearly 120 trains pass through these two railroads every day.
The second is that the shortest distance between the main tower and the railway line is only 6.5 meters.
The two turns are to overcome these two risks.
When completed the Longyearbyen Bridge will be an important link in the Longyan expressway system improving the efficiency of local transport operations and helping to accelerate the development of the old area.
By chance, he saw a map of the bus route from Guangzhou to Shanghai, gave him the idea to travel by public transit.
The total distance from Guangzhou to Shanghai is 1,922 km. He brought only one bag on this trip.
On August 7, Tian Xiaolang departed from Jiangmen, Guangdong. For ten days, he’s been through 600 or 700 bus stops. He has just arrived in Zhangzhou, Fujian province.
Tian Xiaolang said. At the most, it was an 8-hour ride a day. Spending an average of no more than ¥ 150 per day. It’s cost about ¥2,000 so far.
The Guangdong-Hong Kong-Macao Greater Bay Area will implement 13 intercity railway projects with a total mileage of about 775 kilometers, as well as five integrated transport hub projects, with a planned total investment of 474.1 billion yuan. The newly approved railway construction plan will build a multi-level railway network with high-speed railways, general-speed railways and suburban railways in the Greater Bay Area, to form a transportation circle with one-hour access between major cities in the Greater Bay Area, two-hour access between major cities and inland cities in Guangdong Province, and three-hour access between major cities and neighboring provincial capitals, thus creating a “Greater Bay Area on a track”.
包海高速铁路又名包海客运专线，是国家《中长期铁路网规划》中“八纵八横”高速铁路主通道包头至海口通道包头至海口的高速铁路。北起内蒙古包头，向南经鄂尔多斯、榆林、延安、铜川、西安、安康、达州、重庆、贵阳、河池、南宁、钦州、湛江等，终点为海南省海口市。2016年9月14日，贵南高铁可行性研究报告获国家发改委批复。2016年12月21日，包海线西安-延安-榆林高铁西延段开工建设。2016年12月29日，贵南高铁建设动员大会在广西壮族自治区河池市都安瑶族自治县举行，预计2022年12月建成通车。西安至重庆段陕渝两省力争早日开工，而重庆至贵阳段近期由在建渝黔快铁组成，远期将另建一条客运专线即渝贵高铁。南宁至海口段，其中南宁至北海段已经通车，北海至海口段也将在“十三五”内规划建设。整条客运专线都将在2025年底前建成。
China will start developing and testing a 600 km/h high-speed maglev train and 400 km/h high-speed passenger train, according to a guideline released by the Ministry of Transport.
China is building the world’s first high-speed train that can travel through a sea tunnel at a speed of 350 kilometers per hour in Shantou Bay, South China’s Guangdong Province.
The 163-kilometer-long railway, which includes a 9,781-meter-long tunnel, has officially entered the substantive construction stage, with an investment estimated to be at 11 billion yuan ($1.6 billion), the China Central Television reported Tuesday.
According to the report, the tunnel will pass through 17 fault rupture zones in a magnitude-8 earthquake zone, of which eight are active faults, the first underwater tunnel of its kind anywhere in the world.
Most parts of the tunnel are located in high water pressure areas. As a result, construction personnel have to adopt measures to ensure that the tunnel structure is safe, waterproof and reliable, and that operating costs are controllable.
China eyes inter-city rail transit systems in the Guangdong-Hong Kong-Macao Greater Bay Area revamp. The move comes after the NDRC approved an intercity railway construction plan, with investment of 474.1 billion yuan ($67.91 billion)
我国自主研制出口海外的首台超大直径泥水平衡盾构机，打通了孟加拉国历史上第一条水下隧道——Chittagong Karnaphuli River Tunnel卡纳普里河河底左线隧道。
Ahmed, chief engineer of Bangladesh Bridge Authority, has said, “It has always been the dream of the people of Bangladesh to build a tunnel and we want to make Chittagong as good as Shanghai.” With the completion of the tunnel, the drive from Chittagong airport to the industrial park will be reduced from four hours to 20 minutes.
The Karnaphuli River Bottom Tunnel project in Bangladesh is an important part of the China-Bangladesh-India-Myanmar Economic Corridor, which is an important part of the country’s “One Belt, One Road” initiative to improve the Asian Highway Network. The shield machine used for tunnel boring is developed by CCCC Tianhe, with a diameter of 12.12 meters, length of 94 meters and weight of more than 2,200 tons, which is the first Chinese extra-large diameter shield machine to enter the overseas extra-large diameter shield market monopolized by developed countries. The single-lane shield section of the Karnaphuli River bottom tunnel is 2450 meters long, with a maximum tunnel cover depth of 31 meters and a design soil and water pressure of 0.59 MPa. The geology is mainly powdery sand, which is prone to sand liquefaction, mud cake on the cutter plate, cutting surface collapse, mud outlet blockage and other construction problems. CCCC-TIANHE has designed the shield machine specifically for this purpose, adopting many original technologies such as appropriate cutter disc anti-mud-cake design, mud-water system stratified backwash technology, intelligent anti-sedimentation control technology, and automatic control of mud-water circulation system. The shield machine has achieved the fastest 10 digging rings per day (2m/ring) and 171 digging rings per month during the construction. The shield machine was received in the form of a steel sleeve. After receiving, the shield crane will move horizontally and turn 180° to prepare for the second start of the right tunnel.
孟加拉大桥局总工程师艾哈迈德曾表示：“修建隧道一直是孟加拉国人民的梦想，我们希望把吉大港建设得像上海一样好。”隧道完工，吉大港机场至工业园的车程将从4小时缩短到20分钟。
孟加拉国卡纳普里河底隧道工程是中孟印缅经济走廊的重要一环，是国家“一带一路”倡议中的重要组成部分，对完善亚洲公路网。用于该隧道掘进的盾构机由中交天和研制，刀盘直径达12.12米、长94米、重2200余吨，是中国首台走出国门，进入由发达国家垄断的海外超大直径盾构市场的超大直径盾构机。卡纳普里河底隧道单线盾构段长2450米，隧道最大覆土深度31米、设计水土压力达0.59兆帕，以粉细砂地质为主，极易发生砂层液化、刀盘结泥饼、切削面坍塌、排泥口堵塞等施工难题。中交天和为此对盾构机进行了针对性设计，采用适宜的刀盘防结泥饼设计、泥水系统分层逆洗技术、智能防沉降控制技术、泥水循环系统自动控制等多项自创技术。该盾构机在施工掘进中实现了最快日掘进10环（2米/环），月掘进171环的好成绩。此次盾构机采用钢套筒形式接收。盾构机接收完成后，将平移并180°转体，进行该项目右线隧道二次始发准备。
