| Abstract: | The author tries to study the Narth Branch of the Changjiang estuary. There are rith tidal energy,shipping, bresh water,and aquatic resources,etc. in the Biartch. But little has been utilized,and the branch has not been plannd and harnessed. As a result,the channel is depositecl,its runoff is decreassed,navigation capacity is weakened,and a great deal of silt and salt moves backwards into the south Branch with tidal current, thus making the channel shallower day by day and water quality even worse. It is necessary to harness and develop it promptly. Researches show that the rith tidal energy in the North Branch can be wsed to generate power and slour silt effectiwely in the channel. The advantageaus river shape of the North Branch can be used to construct a tidal power station with a lorge reservoir combined with a small one, and the advantageolls tidal hour difference between upper and dawn-stream ends can be used to continuously generate and supply power by the tidal power station. In the meantime, three sluices in upstream, dawnstream and middles tream reachescan be constructed to concentrate water flow for scauring silt in the channel ,increasing nauigation capacity, reslizing direct transport from the river to the sea. Besides, it can get several benefits simultaneausly,such as fresh water supply,breeding aquatics, tourism,and linking the land traffic between changmliig lsland and the north of Jiangsu province,etc. In the tidal power station engineering,feasible and new techniques ,materials and equipment can be adopted to decrease the unit price,so that the rich tidal energy of aur cauntry can get fully utilized and devoloped. |
