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5月20日全区普降中雨,局部地区突降大到暴雨,贺兰山沿线形成百年不遇的特大山洪,持续近8小时,金山滞洪区来洪量高达600立方米/秒。由于金山和镇北堡滞洪区库容有限,造成决堤,致使700余万立方米洪水向东长驱直入。据统计,共冲毁民房9500间,4000多人无家可归,成灾10万人,受灾面积涉及银川、银北、
On May 20, the whole region plunged into heavy rainfall. In some areas, the sudden drop was heavy and the rainstorm led to a torrential rain. Helan Mountain formed a serious flood once in a century and lasted nearly 8 hours. The flood detention in Jinshan County reached as high as 600 cubic meters per second. Due to the limited capacity of Jinshan and Zhenbei Fort detention basin, the burst of the embankment caused more than 7 million cubic meters of floods to flood eastward. According to statistics, a total of 9500 civilian homes were destroyed and more than 4,000 were homeless, causing a disaster of 100,000 people. The affected areas involved Yinchuan, Yinbei,