Construction method of underground structures of seacoasts and artificial islands

Abstract

The invention discloses a building method of underground structures of seacoasts and artificial islands, comprising the following steps of: (1) building continuous closed water-stopping supporting and retaining cofferdams; (2) pumping and discharging water in the area of the closed water-stopping supporting and retaining cofferdams and then carrying out reinforcement treatment or foundation construction on undisturbed submarine foundation; (3) flatly laying a foundation sand mat or a mattress layer; (4) carrying out construction of underground engineering structures of one-layer or multilayer basements; and (5) filling construction. The building method can be applied in a building technology of the underground space development of coast reclamation land areas at shallow sea areas of the coasts, and can also be applied in a building technology of underground space and tunnels on the artificial islands. For the technology applied in building the underground space structures at the reclamation land areas or the artificial islands, the demanded quantity of reclamation materials can be greatly reduced, the construction period can be greatly shortened, the engineering cost can be reduced and the construction quality and safety can be ensured.

Description

Technical field [0001] The invention relates to the technical fields of port engineering, construction engineering, highway engineering, underground engineering and the like, and specifically relates to the construction technology of the underground structure of the wharf, the underground structure of the artificial island and the bridge-tunnel conversion structure in the coastal sea-land-building area. Background technique [0002] With the rapid development of my country's economy, in recent years, the construction of water transportation, highways and other transportation infrastructures has unprecedented scale, including infrastructure projects such as ports, artificial islands, airports, and cross-sea (river) tunnels. [0003] Freight (container, bulk cargo, etc.) terminals are generally built on the land formed by the sea, and the area of ​​land reclaimed from the sea should be determined according to the design scale of the newly built terminal. With economic development, the...

AI Technical Summary

Problems solved by technology

This construction method has a large amount of reclamation and backfilling, and the shortage of coastal resources (especially sand and earth and rocks) leads to a long construction period and high project cost; the construction process of first backfilling and then excavation is adopted, and the construction steps are repeated, resulting in a huge amount of work and heavy construction costs. low efficiency

[0008] If the underwater prefabricated structure and buried pipelines are used, the process of foundation pit excavation and support can be omitted, and the cost can be saved, but the construction quality and safety are not easy to guarantee, and the waterproof and anti-corrosion of the underground space structure cannot meet the requirements

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