Method for constructing composite river bottom protection with steel sheet piles and soft mattresses for artificial island

Abstract

The invention discloses a method for constructing a composite river bottom protection with steel sheet piles and soft mattresses for an artificial island, which comprises the following steps: (1) driving down the steel sheet piles in turn outside the bottom of a breakwater body of the artificial island to be constructed, and transversely connecting the steel sheet piles into a steel plate wall under the benthic mud surface through lateral surface lock catches; and (2) paving interlocking block woven and needled composite geotextile soft mattresses at the water bottom 38 to 42 meters away fromthe steel sheet piles, paving woven and needled composite geotextile sand-rib soft mattresses between the steel sheet piles and the island breakwater bottom of the artificial island, and paving knitted and needled composite geotextile sand-rib soft mattresses under the breakwater body of the artificial island to be constructed. The method changes the prior method for constructing a single soft mattress river bottom protection, and the steel sheet piles are immersed under the outer side mud surface of the base of slop of the breakwater body of the artificial island and are transversely interlocked into an integral steel plate wall to form a three-dimensional protection. The method effectively reduces the erosions to the seabed by water flow and ensures the structural safety of the breakwater body of the artificial island.

Description

technical field [0001] The invention relates to a construction method of an artificial island, in particular to a method for protecting the sandy bottom of an artificial island in the open sea without shelter and with a large tidal range against current erosion, and belongs to the technical field of hydraulic engineering. Background technique [0002] Artificial islands can be used to build deep-water ports for large ships to dock, airports for aircraft to take off and land, and power stations that are easy to solve cooling and pollution. Mining offshore oil and gas fields not far from the shore, building oil and natural gas processing plants; mining seabed coal, iron ore or building offshore mineral processing plants and metal smelting plants; building aquatic products processing plants, paper mills, waste treatment plants, drugs and dangers Product warehouses, etc.; can also build sea cities. [0003] Existing artificial islands are generally built near the coast or in sh...

AI Technical Summary

Problems solved by technology

However, the construction of artificial islands in such areas often has no island shelter, and the seabed is severely scoured by the water flow to form scour pits. If only the existing method of protecting the bottom of the embankment with soft materials is used, it will not be possible to guarantee the integrity of the embankment structure of the artificial island. Stable and safe, seriously affecting the long-term safety of artificial islands

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