Preliminary investigation on the ground subsidence of Yinlong square in Yibin City: caused by the backflow of Jinsha River

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at about 0:15 on August 19, the sunken square near Cuibai avenue of Yinlong square in Yibin City suddenly collapsed and “swallowed” 21 cars in an instant. The reporter learned from the 202 geological team of the Provincial Bureau of Geology and mineral resources, which is carrying out emergency rescue work ahead, has carried out an investigation all night and preliminarily found out that the cause of the collapse is the water from Jinsha River flowing into Yinlong square area in Yibin.

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in recent days, the rainstorm in Sichuan continues. On August 18, the flood peak with a return period of more than 50 years passed through Yibin. At about 0:15 on August 19, Yinlong square collapsed near the riverside parking lot, green belt and sidewalk. After the

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accidents, Yibin Municipal Bureau of housing and urban rural development immediately informed the 202 geological team of the local provincial Bureau of Geology and mineral resources to send experts for support. The team immediately sent technicians to the site and carried out field survey overnight.

According to the investigation and analysis of field experts,

preliminarily found out the cause of the collapse – Yinlong square has four underground floors. Due to the recent heavy rainfall, the river water in Linjiang river rises sharply, which leads to the rise of underground water level. The pressure on the basement side has exceeded the bearing capacity of the building. As a result, one side of the first and second floor underground of the square collapses and water enters, and finally the ground collapses. Fortunately, the square has not been completely completed, and no personnel have been stationed. Only some vehicles in the ground parking lot have fallen down and damaged.

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according to experts’ opinions, the local government has taken emergency measures, one is to set up a warning line to strengthen monitoring; the other is to further investigate the basement of the square, carefully investigate whether there are damages and cracks in the main building, re identify the safety evaluation; and third, analyze the stability of the surrounding environment.

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up to now, the off ramp at Minjiang north bridge head (suojiang stone road section) and hejiangmen road section of Binjiang Road in Yibin have been fully closed, and all vehicles and pedestrians are prohibited.

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Zhang Jing, observer reporter of Luohui Jiangchuan newspaper