土工基础

›› 2018, Vol. 32 ›› Issue (5): 502-505.

• 工程实录 • 上一篇    下一篇

多回500 kV海底电缆交越登陆的安全控制

曾庆荷1，王亚东2，苏定立3   

  1. (1.中国南方电网超高压输电公司，广州 510000；2.中南电力设计院有限公司，武汉 430071；3.中山大学，广州 510275)
  • 收稿日期:2018-08-06 修回日期:2018-08-23 出版日期:2018-10-30 发布日期:2018-11-02
  • 作者简介:曾庆荷（1981-），男，工程师，研究方向为土木工程建设与管理。 通讯作者：苏定立（1990-），男，博士研究生，研究方向为岩土工程。
  • 基金资助:

    国家自然科学基金资助项目（No.41530638,No.41030747,No.41227002,No.41372302,No.41472257）

Safety Control of a Multiple Return 500 kV Submarine Cable Landing Project

ZENG Qinghe1, WANG Yadong2, SU Dingli3   

  1. (1.EHV Power Transmission Company, CSG, Guangzhou, 510000;
    2.Central Southern China Electric Power Design Institute Co., Ltd., Wuhan, 430071;
    3.Sun Yat-sen University, Guangzhou, 510275)
  • Received:2018-08-06 Revised:2018-08-23 Online:2018-10-30 Published:2018-11-02

摘要： 多回500 kV海底电缆交越登陆的安全控制是海底工程中亟待解决的关键问题之一，但海缆登陆研究仍主要是参照陆地管线埋设，尚不足以满足工程实际。依托某多回500 kV交流跨海输变电工程，通过分析海缆登陆工况与海岸地质条件，研究了海岸道路建设期与运行期对下穿海缆安全的影响状况，阐明了安全影响产生的条件，提出了以大跨度梁为主的隔离保护措施和以电缆沟为主的消能保护措施，为类似登陆工程提供参考。

关键词: 海底电缆, 交越登陆, 安全控制, 隔离, 消能

Abstract: The safety control in the multiple return 500kV submarine cable crossing and landing project is one of the critical issues to be solved in the submarine construction engineering. However, the state of the art aspects of the submarine cable landing procedures are still mainly based the cable installation experience developed on land, which are not enough to meet the requirements in the submarine construction engineering practice. This paper presents a case history of the installation a multiple return submarine cable project crossing a strait for the electricity transmission. The subsurface geological as well as construction logistic conditions at the cable landing site are evaluated and the impact of the highway construction along the shore line on the underneath cables are studied. The isolation measures provided by the large span girders and the energy dissipation measures provided by the cable tranches are recommended for the safe construction and operation of the landed submarine cables.

Key words: Submarine Cable, Crossing and Landing, Safety Control, Isolation, Energy Dissipation