横门出海航道自广东省中山市的中山港起至伶仃国际航道3~#、4~#航标止,全长48km,其中中山港至横门口10km,横门口以外38km,该航道在口门内有一过渡性浅滩,口门外主要有烂山、二茅和淇澳三处浅滩,滩顶水深一般为4.0m左右。横门出海航道整治工程包括疏浚工程和 Crossing the sea from Zhongshan Road, Zhongshan City, Guangdong Province to the Lingding international waterways 3 ~ #, 4 ~ # navigation mark only, a total length of 48km, of which Zhongshan port to cross the gate 10km, 38km outside the cross gate, the fairway in the gate There is a transitional shoal, the main outside the mouth Rotten Hill, two Mao and Qiaowao shallow three, beach water depth is generally about 4.0m. Hengmen sea route regulation works include dredging works and