【摘要】 <正> 健跳江位于浙江省中部的三门县三门湾内,江道弯曲,全长约17公里,口门朝向东北。江顶宽阔,中部及口门较窄,江内多矶头,深潭,口门外有大、小狗头岛、长市岛、木杓岛等大小岛屿。江内水深一般在3—10米,宽约240—500米,最窄处为黄门峡,宽仅170米,该处以上集水面积为244.7平方公里。江道两岸为高山环抱,高约300米,两岸滩涂宽约300米,均已围堰。本地区为火成岩区。有关部门拟在江内兴建一万千瓦级潮汐电站,本文拟就该江的自然环境方面作一可行性讨论。更多还原

【Abstract】 Jiantiao river is located in Sanmen Bay of Zhejiang Province. The inner end of the river is wide and other parts are narrow. Annual average tide range is 4.2m and the maximun is 7.03m. The tidal energy in the river is rich. The sand in Jiantiao river mainly conies from Sanmen Bay.The silt content is low and changes seasonally. The sand is transported into the river by flood tide, and most of it is carried out with ebb tide except that a little of it silts down due to the effects of secondary flow and flocculation in some areas. It shows that Jiantiao river is favourable to build up a tidal electric station for its natural conditions.更多还原