Method for treating river entrance

A technology for sea estuaries and rivers, which is applied in the fields of berms and artificial alluvial islands, energy dissipation at sea estuaries, and silting promotion.

Inactive Publication Date: 2014-08-20
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no method has been found to use natural energy to make the best use of the situation and push the boat along the water to solve the problem of the estuary
The river treatment methods of the hard-shell dam method and the diversion nose method have not been found to realize the comprehensive treatment method of the port entering the sea by using energy dissipation to promote siltation and embankment protection

Method used

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  • Method for treating river entrance
  • Method for treating river entrance
  • Method for treating river entrance

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1 as figure 1 As shown, the upper reaches of the river (1) have a substantially equal width, a substantially equal depth, and no tributaries join in. The planar shape of a large bell mouth appears in the downstream, and there is no estuary alluvial island at the bell mouth gate near the coastline (6). The underwater landform changes at any time, and the waterway is changeable, making it impossible for ships to pass through. The water is shallow and the tide is strong, the tide is in and out, and the salty tide is driving straight in, so the fresh water resources cannot be fully utilized. The tidal energy gathers, the tidal wave deforms, the tidal surge is extremely large, the dikes and dams are destroyed, the seawater backflows, and the flooding is serious. For a long time, the management of rivers, the repair of dams, the treatment of headaches, and the treatment of feet have always failed to solve the problem.

[0030] The present invention proposes a compre...

Embodiment 2

[0031] Embodiment 2 is Hangzhou Bay, the estuary of the Qiantang River, which is a very typical trumpet-shaped bay. It is a bay with the most powerful tidal currents in the world. It is wide on the outside and narrow on the inside, deep on the outside and shallow on the inside. The river surface at the mouth of the sea is as wide as 100 kilometers, and when it reaches Ganpu in the west, the river surface suddenly shrinks to 20 kilometers. When it reaches Yanguan Town, Haining, the river is only 3 kilometers wide. When the tide rises, the wide and deep mouth of the bay swallows a large amount of seawater at once. Because the river surface shrinks and becomes narrower and shallower rapidly, the tidal water on the road has no time to rise evenly, and the waves behind push the waves ahead, and each wave is higher than the next. Near Dajia Mountain, there is also a huge underwater sand bar. The tide rushes up, setting off a towering and astonishing giant wave, forming a steep wate...

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Abstract

The invention relates to a method for treating river entrance, in particular to an entrance port energy dissipation and siltation promotion and artificial alluvial island forming method. The method comprises the steps of energy dissipation and siltation promotion, foundation treatment, flow diversion and sand gathering, hard-shell dam, channel diversion and excavation, gate construction and planting and sand solidification. Artificial island is formed by utilizing natural power to carry sand at the entrance port under the condition that a nose flow diversion dam is arranged close to a horn mouth position of a river, and a river mouth alluvial island is artificially created to form at a coastal section of the horn mouth. The method makes best use of the circumstances and takes advantages of the favorable trend, thereby leading the river to be comprehensively treated, servicing the society and benefiting the mankind. The method has the characteristics of solidifying the sand and protecting the dam, discharging the flood and restraining the tide, accumulating water for irrigation, stabilizing the channel, and increasing land resources, and is applicable for the treatment of various river entrances.

Description

technical field [0001] The invention relates to a treatment method for river estuaries, in particular to a method for energy dissipation, silting promotion, embankment protection and artificial alluvial island formation at sea estuaries. It belongs to environmental protection and coastal engineering technology. Background technique [0002] Rivers in their natural state form winding and tortuous channels due to the long-term natural erosion of upstream mountains and rivers. Because the rivers have different depths, widths, and flow velocities, the banks of the rivers are constantly eroded, and when floods come, a large area of ​​flood discharge area is formed near the mouth of the river in the lower reaches of the river. People like to live near the estuary of rivers, so people always build embankments for reclamation, compress the original flood discharge area, and form a prosperous delta. In rivers and rivers, due to water and soil erosion, thicker and thicker mud layers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/02E02B3/04E02B3/06
Inventor 陶松垒滕一峰赵志方陈丽君魏博闻应林江沈波陈国仙
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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