A Survey of 11 Death Caused by Heavy Rainfall in Shenzhen: Why Do Urban Underground Canals Swallow People?

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 A Survey of 11 Death Caused by Heavy Rainfall in Shenzhen: Why Do Urban Underground Canals Swallow People?


Destructive Rainstorm Underground Canal Swallowing Man

At about 21:00 pm on November 11, a sudden heavy rain broke out in Shenzhen, and the short-term rainwater washed into the underground canal under operation, which resulted in the workers who were cleaning silt at three locations in Luohu District, Xihu Hotel, Donghu Hotel and the river section near Xiangmihu Section of Fengtang River in Futian District, unable to escape and be washed away by rainwater.

Fan Defang, deputy director of Luohu District of Shenzhen, told reporters that the workers were working on water treatment and quality improvement projects to remove silt from the rain and sewage diversion. Because of the heavy rain, some workers did not have time to evacuate. In Xihu Hotel Section, the space is a narrow underground channel and river in the underground pipeline. The water level rises from 1 meter to 4 meters in a short time, and the workers are washed away instantly.

Reporters in the afternoon of 12 Futian Qiaoxiang Road and Xiangmihu Road intersection site to see that the blower in the culvert mouth blowing to ensure oxygen supply. Rescue workers told reporters that obstacles prevented passage at 200 meters, so they relocated the site and used rubber boats and stormboats to search and rescue along the river and Mangrove Bay. All the bodies of the three victims were found.

In the section near Donghu Park in Luohu District, search and rescue teams use sonar detection to search and rescue between the outlet of the dam and the end of Shawan River. Rescue teams consisting of urban fire, forest fire and Street Districts step into chest-high water for detection and rescue.

Did the three accidents miss the golden escape period?

The Shenzhen Emergency Management Bureau issued a briefing on the early morning of the 13th, saying that the average rainfall in the whole city was 40.6 mm, and the maximum rainfall in each district was 65.0 mm, of which the maximum rainfall in 10 minutes was 39.2 mm in Luohu District and 39.7 mm in Futian District. The extreme short-term rainfall was very strong.

Shenzhen Meteorological Bureau issued a yellow warning of gale at 20:00 on November 11 and a yellow warning of Rainstorm at 20:10 in the city. Shenzhen Emergency Management Bureau reported that the office of Shenzhen Three Defense Command immediately issued emergency response to the citys three defense responsible persons through the provincial three defense responsible person system. After the warning was issued, there was more than one hour to evacuate the construction site between the three casualties of the dredging workers.

There have been similar heavy rains in the past, and there have not been so many casualties. Under the rainstorm warning, why are there still workers working? Is the warning information timely transmitted to all the work sites? According to the Shenzhen Flood Prevention Preparedness Plan 2018, the high-risk areas of flood disasters such as rivers, such as construction projects, dangerous reservoirs and dangerous slopes are high-risk areas. In addition, according to the Shenzhen Production Safety Accident Emergency Plan, the water bureau is responsible for organizing and guiding the construction of water projects and the safety production emergency management work of water source management units. The reporter asked the responsible person of Shenzhen Water Bureau whether the Water Bureau initiated emergency plans to ensure safety in production when the flood occurred. Up to the time of press release, no response was received from Shenzhen Water Bureau. The Shenzhen Emergency Management Bureau issued a circular on the 13th that the workers were washed away by floods as they were preparing to evacuate.

It is reported that all water engineering projects in Futian District have been completely shut down and checked and sorted out. The Office of Guangdong Safety Production Committee and Guangdong Emergency Management Office issued an Emergency Notice on Strengthening Safety Prevention Work in Flood Season on December 12th, requesting that if safety cannot be guaranteed during heavy rains, work should be stopped and evacuated resolutely to ensure that no casualties occur.

Urban Underground Canal is the Safety Bottom Line of the City. Suggestions on Strengthening Fine Management

Many departments in Shenzhen use big data to upgrade the modernization level of urban governance, and set up urban safety research institute to investigate potential urban safety hazards. Why cant the early warning ability of big data system withstand the test of a rainstorm?

Experts believe that scientific and technological innovation is an auxiliary means of urban governance, and urban safety management should ultimately be implemented in the sense of responsibility and safety mechanism. Often, it is due to many reasons, such as poor information communication channels, weak security awareness and improper emergency response, which eventually leads to tragedy.

Liu Jian, director of the Institute of Ecology and Technology of Construction Engineering of Shenzhen University, pointed out that in a city with such a high degree of modernization, the occurrence of the incident was distressing and exposed multiple vulnerabilities in the safety net. In order to prevent similar avoidable tragedies, experts suggest that the safety management awareness of relevant departments, site safety managers and operators should be raised, the investment of safety equipment should be increased, emergency plans should be formulated and strictly implemented. In addition, monitoring and warning systems are set up along rivers and waterlogging-prone sites to achieve real-time monitoring. Liu Kaiming, director of Shenzhen Institute of Contemporary Social Observation, said that digital urban management based on large databases on urban spatial geographic platform should adhere to the principle of people-oriented, explore the establishment of a professional problem investigation mechanism, strengthen the fine management of society and cities, and better guarantee the safety of peoples lives and property. Source: Xinhua responsible editor: Ji Guojie_NBJ11143

Liu Jian, director of the Institute of Ecology and Technology of Construction Engineering of Shenzhen University, pointed out that in a city with such a high degree of modernization, the occurrence of the incident was distressing and exposed multiple vulnerabilities in the safety net.

In order to prevent similar avoidable tragedies, experts suggest that the safety management awareness of relevant departments, site safety managers and operators should be raised, the investment of safety equipment should be increased, emergency plans should be formulated and strictly implemented. In addition, monitoring and warning systems are set up along rivers and waterlogging-prone sites to achieve real-time monitoring.

Liu Kaiming, director of Shenzhen Institute of Contemporary Social Observation, said that digital urban management based on large databases on urban spatial geographic platform should adhere to the principle of people-oriented, explore the establishment of a professional problem investigation mechanism, strengthen the fine management of society and cities, and better guarantee the safety of peoples lives and property.