140 billion Jianjian Qiongzhou Strait Engineering Lighting Big Cake

Gao Zongyu, chief engineer of the China Railway Bridge Survey and Design Institute, said at the Wuhan International Bridge Technology Forum on the 15th that the construction of the Qiongzhou Strait cross-sea passage between the Leizhou Peninsula and Hainan Island in Guangdong has been started, and the project planning research has been completed. After passing the review, it is estimated that the project investment will exceed RMB 140 billion. Located in the Qiongzhou Strait between Leizhou Peninsula and Hainan Island, it is one of the three major straits in China. It is about 80 kilometers long from east to west, with an average width of 29.5 kilometers from north to south and a straight line distance of about 18 kilometers at its narrowest point. . The Qiongzhou Strait has hindered the land transportation between Hainan Island and the mainland, directly affecting the economic development of Hainan, and the construction of the Qiongzhou Strait cross-sea channel is imminent.

Since the 1990s, the Ministry of Communications, the Ministry of Railways, and Guangdong Province have conducted project research on the Qiongzhou Strait Cross-Sea Passage. In 2008, under the guidance and coordination of the National Development and Reform Commission, the Ministry of Railways, the Ministry of Transport, and Guangdong Shenghainan Province jointly planned the project. The China Railway Bridge Survey and Design Institute, which has participated in the design of cross-sea projects such as the Donghai Bridge and the Hangzhou Bay Bridge, is responsible for the current research.

Engineering design renderings

Gao Zongyu said that the Qiongzhou Strait Cross-sea Project area has unfavorable factors such as water depth, wind and wave height, complex geological structure, volcanic and seismic activities, high navigation requirements and environmental sensitivity. However, based on China's many years of deepwater long-span bridge technology innovation and engineering practice, through the scientific research, design, construction, equipment manufacturing and other scientific and technological research, building bridges in the Qiongzhou Strait can be achieved. Experts have initially drafted two comparative bridges within the 80-kilometer strait, connecting the western slope of the Leipo Village in Xuwen County of Leizhou Peninsula and the Daojiao Point of Hainan Island, connecting the Leizhou Peninsula Fort Point and Hainan. The midline bridge at the end of the day.

From the current survey results, the mid-line solution line is straight, the cross-sea project is short, the existing roads and railways on both sides of the strait are connected smoothly, the main project and lead engineering investment is small, the running time is short, the operating cost is low, and it is in line with urban planning, but The maximum water depth is 75 meters. The west line scheme is relatively flat on the sea floor. The maximum water depth is only 55 meters. However, the cross-sea project is long, and there are more connections between the existing roads and railways on both sides of the strait. The main project and lead engineering investment is large, and the bridge line must be wound. Avoid the core area of ​​the Xujiao Coral Reef National Nature Reserve.

Gao Zongyu said that the current Qiongzhou Strait Cross-sea Passage has completed the project planning study and passed the review. The next phase of the research will mainly conduct an in-depth comparative study on the mid-line and west-line bridges. It is estimated that the total investment of the entire project will reach one thousand. More than four billion yuan, the construction period is eight years.


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