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横门是珠江八大出海口门之一,排泄我省西江洪水量的八分之一,是中山县四十万亩农田排洪的出海水道,又是附近各县的重要交通和战备航道。但横门口为横门山和芙蓉山所夹,口窄流急,形成一个大卡口,致使汛期上游水位涌高,威胁防洪堤围安全,造成大面积内涝,影响农业生产。
Hengmen is one of the eight estuaries to the mouth of the Pearl River. It drains one eighth of the flood in the Xijiang River in our province. It is an outflow of 400,000 mu of farmland for flood discharge in Zhongshan County and an important transportation and combat readiness channel for nearby counties. However, the transverse entrances are intersected by the Hengmen Mountains and Furong Mountain. The mouths are narrow and sharp, resulting in a large bayou. As a result, the water level rises in the upper reaches of the flood season, threatening the safety of the flood dike and causing large-scale waterlogging and affecting agricultural production.