What disasters will the rainy season cause?

Disasters caused by rainfall:1954 ~ 65438+February ~1955 ~ 65438+1October, rainfall occurred in the Dongting Lake plain of Hubei Province, with an accumulated ice thickness of 70 ~ 80mm and an altitude of150 ~ 600m. From February 13 to February 16, 2005, three lines of Hunan 500kV power grid were disconnected due to icing.

1969 A severe freezing rain in northern Guangdong interrupted telecommunication traffic in northern Guangdong, and industrial and mining enterprises stopped working for more than a week.

1972 February/kloc-0 ~ 8, large-scale freezing rain occurred in Hunan, Guizhou, Jiangxi and other places, and the wires in the most serious areas were frozen nearly 10 cm thick. Make telegrams and telephones unusable.

From 1973 to 65438+February, in Qitai County, Xinjiang, a rain dome with a maximum diameter of 24 cm, a thickness of 18 cm and a weight of 224 g per meter, Jim's first rain dome lasted for 60 hours, with a maximum diameter of 7 cm, which broke the wires and caused communication interruption. The overhead communication line from Urumqi to Tacheng often needs to organize manpower to break the ice every winter to ensure the normal communication.

1October 27 -28,1977 10 A rare snowstorm occurred in Hansaiba Forest Farm, Chengde City, Hebei Province, with an affected area of 400,000 mu, accounting for more than half of the forest area at that time, causing more than 600,000 trees to be damaged, and the severely affected area was 200,000 mu. The loss of wood is about 960,000 cubic meters, which is about 27-28 million yuan.

1979 65438+1From October 28th to February 3rd, the urban area of Qingdao, Shandong Province and some counties and districts suffered from continuous snowstorms, which led to the power supply stop in Pingdu section of Ludong Power Grid. The snowstorm in Jiaonan county reached 20 ~ 70 mm, with a loss of more than 2 million yuan. A snowstorm in Linyi, Shandong Province, once caused a telephone line with a length of 1m to freeze a layer of ice weighing 3.5kg, resulting in huge losses.

1997 65438+From February 26th to 30th, a rare snowstorm occurred in a forest farm in Weichang County, Hebei Province. Eight wires between every two poles are frozen, weighing 1 ton. The wires were broken, the telephone poles were crushed, the trees were frostbitten, and the losses were serious.

1 998 65438+February1,rainy weather occurred in Suqian, Xinyi, Pizhou and Donghai, Jiangsu Province, and the diameter of ice accumulation reached 4 ~ 16 mm, and there was1/kloc-0 on the high-voltage line in Xuzhou City.

On February 25-26, 2002, from June 5 to February 26, 2002, Guilin, Guangxi suffered from snowstorm. Freezing and obvious snowstorms occurred in counties north of Lingui, which had a great impact on evergreen fruit trees in Guilin, and caused serious losses in some areas, especially citrus, loquat and other fruit trees, and the crown, branches and leaves, young loquat fruits, summer oranges and remaining trees were frozen.

On February 6, 2005, there were 18 counties and cities in southwest Hubei, Jianghan Plain and northeast Hubei. The diameter of ice accumulated in 6 hours was 2 ~ 8 mm, and the maximum diameter of rime ice accumulated in 6 hours was 20 mm. As a result, more than 40 Wufeng 1 10 kV transmission towers collapsed, and four 1 10 kV transmission lines were damaged, resulting in power supply paralysis and power grid structure destruction, which posed a great threat to the operation of Central China Power Grid. At the same time, rainy weather has increased traffic accidents. There were more traffic accidents in Huanggang in February than in the same period of last year 10 percentage point. The pavement of Wufeng Highway was damaged by snow chains for 600 kilometers. In Changyang County, the section from Hejiaping to Lang Ping of National Highway 3 18 was blocked by snow and ice, and the Tianzhu Mountain section of the southern highway was closed, and the Jin Shanshan section of Wang Yu Line 12 was also closed for one day. Danjiangkou of Shiyan-Han Shi Expressway was closed several times; The road surface in the second mountain area was covered with snow and frozen for a long time, and the traffic in the three southern counties was interrupted for 3 to 5 days.

On February 8, 2005, rain and snow continued in Youyang area in the southeast of Chongqing. Chongqing Power Grid Youyang, Wulong and other areas have suffered from severe weather and low temperature that have not happened for more than 20 years, respectively, resulting in large-scale rainstorms. Many power lines were covered with ice more than 50 mm, which led to the collapse of the multi-base tower of 1 10KV Qianxiulong line, resulting in a large-scale power outage and serious impact.