Composite wave-resisting seepage-proof wall for coast flexible direct-current convertor station and transformer substation and construction method

A flexible direct current, composite anti-seepage technology, applied in the direction of coastline protection, pier, quay wall, etc., can solve the problems of long construction period, large occupied area, complex foundation treatment, etc., to achieve convenient and reliable construction, small occupied area, good safety effect

Inactive Publication Date: 2015-03-25
ZHEJIANG ELECTRIC POWER DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional embankment construction scheme occupies a large area and the foundation treatment is complicated, and the investment will exceed the investment of the flexible DC converter station or substation body with a smaller area, which is extremely uneconomical in terms of construction cost
Moreover, the construction period is very long, the settlement after construction is relatively large, and the risk of flood control is also significantly increased

Method used

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  • Composite wave-resisting seepage-proof wall for coast flexible direct-current convertor station and transformer substation and construction method
  • Composite wave-resisting seepage-proof wall for coast flexible direct-current convertor station and transformer substation and construction method

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Embodiment

[0022] Embodiment: The present invention mainly builds the anti-wave wall and the surrounding wall together, and the gravity anti-wave wall doubles as the surrounding wall; the bottom or the outside of the anti-wave wall is provided with a composite anti-seepage body from the natural ground to the bedrock, and the method of the composite anti-seepage body is as follows: (1) Perform dynamic compaction or dynamic compaction replacement and compaction of easily scoured backfill soil and silt; (2) Close row-type cast-in-place piles for anti-scouring and anti-seepage on the basis of dynamic compaction; (3) After replacement Additional water-stop measures such as pre-filling thick grout and high-pressure grouting are adopted inside flow stations or substations. Through the above measures, a 3m wide anti-scouring and anti-seepage underground diaphragm wall with a width of about 3m is formed, which is mutually reinforcing and completely closed, to ensure the stability and reliability o...

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Abstract

The invention discloses a composite wave-resisting seepage-proof wall for a coast flexible direct-current convertor station and a transformer substation and a construction method. According to the composite wave-resisting seepage-proof wall, a wave wall body and a bounding wall body are constructed in a combined mode to form a gravity type wave wall doubled as a bounding wall, and a composite seepage-proof body from the natural ground to bed rock is arranged at the bottom or on the outer side of the gravity wave wall and is composed of a completely-sealed scour-protection seepage-proof underground continuous wall with the width about 3 m. The construction method of the composite seepage-proof body comprises the steps that (1) dynamic compaction or dynamic compaction replacement compact processing is carried out on easily-scoured backfill and sludge; (2), on the basis of dynamic compaction, scour-protection seepage-proof continuous blowdown filling piles are sealed; (3) additional water stop measures of pre-filling of dense slurry and high-pressure grouting are adopted in the inner side of the convertor station or the inner side of the transformer substation. The composite wave-resisting seepage-proof wall has the advantages of being simple in structure, convenient and reliable in construction, firm, good in safety, relatively economical, small in occupied area and the like.

Description

technical field [0001] The invention relates to a composite anti-seepage wall and a construction method for coastal flexible DC converter stations or substations, which are suitable for the construction of flexible DC converter stations or substations built near the sea; it belongs to the design and construction technology of power transmission and transformation projects field. Background technique [0002] According to the requirements of the code, the site design elevation of the station area should be higher than the flood level with a frequency of 1% or the highest waterlogging level in history. For substations affected by wind and waves along rivers, rivers, lakes, and seas, the elevation of flood control facilities should also consider the wind and wave with a frequency of 2%. High and 0.5m safe superelevation. For power plants located on the seashore, the elevation of the flood control or embankment crest shall be increased according to the requirements of the flood...

Claims

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Application Information

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IPC IPC(8): E02B3/06
CPCE02B3/06
Inventor 安春秀杨勇杨雷霞黄达余吴亮陈若曦周毅吴麟谢瑞胡列翔
Owner ZHEJIANG ELECTRIC POWER DESIGN INST
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