Coastal reservoir land reclamation type bank protection structure and construction method thereof

A land-building and building technology, applied in the field of revetment design and construction of coastal reservoirs, can solve problems such as erosion and erosion of hard revetment structures, downstream erosion, weakening of coastal rivers, etc., to promote development and utilization, protect geological environment, eliminate adverse effects

Active Publication Date: 2018-03-06
CHINA THREE GORGES UNIV +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to control the river regime and the flood control safety of the coastal reservoir, the slope-type revetment structure in the prior art focuses on the structural design of using hard materials such as block stones and concrete, which leads to serious revetment hardening, and the hardened revetment structure destroys the river bed. The connection with the river bank ecosystem cuts off the contact between the organisms and microorganisms in the water and the land area. At the same time, the hardened river bank prevents the growth of aquatic plants and seriously affects the ecosystem of the coastal reservoir. In addition, the conventional hard revetment struc

Method used

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  • Coastal reservoir land reclamation type bank protection structure and construction method thereof

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Embodiment 1

[0027] Such as figure 1 As shown, the present invention provides a kind of bank revetment structure of land-building type of seaside reservoir, comprising a filling interface step 4 arranged along the bank revetment foundation slope 2, a permeable filling layer 7 covering the filling interface step 4, covering the The impermeable fill layer 6 on the permeable fill layer 7; the impermeable fill layer 6 is arranged into a multi-level step structure from bottom to top along the revetment foundation slope 2, and each step of the impermeable fill layer The entire bottom of the bottom is also provided with a permeable filling layer 7; an anti-seepage geotextile 11 is arranged between the permeable filling layer and the impermeable filling layer; the permeable filling layer 7 is filled with sand and gravel. The impermeable filling layer 6 is formed by filling layers of cohesive soil.

[0028] Further, the slope angle θ of the step 4 of the filling interface is 30°, the width of the ...

Embodiment 2

[0035] The present invention also provides a method for constructing a bank revetment structure for a seaside reservoir, comprising the following steps:

[0036] a. Determine the building position of the revetment structure according to the geological and landform conditions of the coastal reservoir.

[0037] b. Excavate the filling interface step along the bank revetment foundation slope at the building site, set drainage holes on the step slope, cover the permeable filling layer on the filling interface step, and use sand and gravel for the permeable filling layer The relevant national technical standards shall be filled and compacted, and the degree of compaction shall not be less than 85%.

[0038] c. Lay anti-seepage geotextile on the surface of the permeable fill layer, and fill the impermeable fill layer on the anti-seepage geotextile. The surface is set into a stepped structure from bottom to top, and a permeable fill layer is also set on the entire bottom of each ste...

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Abstract

The invention provides a coastal reservoir land reclamation type bank protection structure. The coastal reservoir land reclamation type bank protection structure comprises earth-filled interface steps, water-permeable earth-filled layers and water-impermeable earth-filled layers, wherein the earth-filled interface steps are arranged along a bank protection foundation slope surface; each water-permeable earth-filled layer is arranged on the corresponding earth-filled interface step in a covering manner; and each water-impermeable earth-filled layer is arranged on the corresponding water-permeable earth-filled layer in a covering manner. The water-impermeable earth-filled layers are arranged into a multi-level step structure along the bank protection foundation slope surface from bottom to top. A water-permeable earth-filled layer is also arranged at the whole bottom of the water-impermeable earth-filled layer step at each level. Anti-seepage geotechnical cloth is arranged between each water-permeable earth-filled layer and the corresponding water-impermeable earth-filled layer. The water-permeable earth-filled layers are formed by being filled with sand gravel. The water-impermeableearth-filled layers are formed by being filled with a viscous soil body in a layered manner. By means of the coastal reservoir land reclamation type bank protection structure, the land-filled structure which guarantees stability of a coastal reservoir bank slope and meanwhile newly increases land is formed; the geological environment of a coastal reservoir region is effectively protected; and exploitation and utilization of bank slope land resources are promoted.

Description

technical field [0001] The invention relates to the field of bank revetment design and construction of a coastal reservoir, in particular to a bank revetment structure and construction method for a coastal reservoir. Background technique [0002] In the past 30 years, in order to vigorously develop hydropower resources, take into account flood control needs and regional water resources allocation, a large number of large and super large reservoirs have been built. According to incomplete statistics, 80-90% of reservoir landslides are related to reservoir water activities, and bank slope damage is related not only to the material structure of the bank slope, but also to changes in the ocean water level of the reservoir. According to preliminary statistics, there are a large number of urban market towns in my country's coastal reservoirs, such as Badong, Zigui, Yichang, Wushan, Fengjie, Kaizhou, Yunyang, Wanzhou, Zhongxian, Fengdu and other more than 60 urban market towns in t...

Claims

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Application Information

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IPC IPC(8): E02B3/12
CPCE02B3/12
Inventor 陈洪凯陈涛郭科萱陈飞
Owner CHINA THREE GORGES UNIV
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