How many people died in Jinan rainstorm in 2007?
Jinan 7 18 refers to the July 18 torrential rain in Jinan, which occurred around July 18 17, 2007. The rainstorm is at the peak of off-duty traffic, and the traffic is crowded.
During the period, there were about158,000 motor vehicles, and more than 50 intersections and sections in the urban area were seriously flooded, which cut off traffic and caused about 38,000 motor vehicles to stay on urban roads.
When the rainstorm came, about 6.5438+million people were stranded on the road due to accumulated water, and most of the casualties caused by the disaster occurred outdoors and on the street.
In the end, more than 30 people were killed, 170 people were injured, about 330,000 people were affected, about 1800 houses collapsed, about 800 cars in the urban area were damaged, about1400,000 square meters of urban roads were damaged, more than 500 sets of manhole covers were washed away, and more than 20 lines were cut off.1.
The cause of the disaster:
1, urban flood discharge capacity is limited.
Xiaoqing River is the only outflow river in Jinan, and the main stream has been excavated. However, due to the constraints at that time, the corresponding flood diversion projects, flood detention area projects and tributary supporting buildings were not implemented according to the planned 50-year flood control standard, and the current flood control capacity of rivers is only once every 20 years, which is far from meeting the flood control requirements. When the highest water level of this flood reaches 24m, it will support the flood discharge of urban rivers.
Other rivers in the main urban area have not yet reached the prescribed flood control standards, with small cross-section and low flood discharge capacity, which leads to overflow and waterlogging. The urban drainage network system is imperfect, the pipeline section is small, the aging is serious, and the standard is low. The return period is only 1 ~ 2 years.
2. The precipitation intensity is unusual.
This precipitation is a rare heavy rainfall process in history, accompanied by lightning and short-term strong wind, which is affected by cold air in the north and strong warm and humid airflow in the southwest.
Since July 18, 15: 10, there has been a super heavy rainfall process in the whole city from north to south, with heavy rain in most areas, and the rainfall basically ended at 2 am on July 19.
The average rainfall in the city is 82.3mm, of which the average rainfall in Lixia, Shizhong, Huaiyin and Tianqiao is 142.2mm, and the maximum rainfall point is located in the municipal government, with the rainfall reaching182.7 mm. ..
Rainfall in urban areas is mainly concentrated in 17:40 to 2 1:00, and the maximum rainfall is 15 1 mm, which is nearly 1 of the rainfall of1987 "8.26" extraordinary flood. 2-hour maximum rainfall167.5mm; ; The maximum rainfall at 3: 00 1.80 mm is the historical maximum since meteorological records were recorded.
According to the analysis of meteorological department, the theoretical probability of maximum rainfall 1 hour is once in 200 years. This extreme weather event is a sudden small probability meteorological disaster caused by climate anomaly.
Refer to the above? Cause analysis of the "7. 18" rainstorm and flood disaster in China Weather Network-Jinan