An underwater artificial freezing device

Abstract

The invention provides an underwater artificial freezing device, which includes an offshore operation ship, a hydraulic telescopic rod, a sealed tank, a freezing mechanism, and a pumping mechanism. The pumping mechanism includes a pump and a pumping pipeline. After the offshore operation ship moves to the area to be constructed, the hydraulic telescopic rod drives the sealed tank box down to the area to be constructed in the seabed soil. The sealed tank box forms a sealed space above the seabed soil. The seawater in the sealed space is pumped out by the pump, and then the low-temperature salt water is delivered to the freezing pipe body through the brine pump, so that the freezing pipe body can reach the seabed soil for freezing to form a frozen soil curtain, because there is no flow in the sealed tank Seawater, so there will be no phenomenon that the flow of seawater will take away the cooling capacity of the frozen pipe body, improve the efficiency of freezing, and the construction process such as reinforcement can be carried out between the frozen soil curtains formed by freezing, providing a foundation for marine engineering construction.

Description

technical field [0001] The invention relates to the technical field of marine geotechnical engineering, in particular to an underwater artificial freezing device. Background technique [0002] With the continuous development of the economic level, construction projects are no longer limited to the land, and with the continuous reduction of the available land area, people's use and development of the ocean is also increasing year by year. In marine geotechnical engineering, whether it is bridge engineering , subsea tunnels or offshore platforms, etc., the impact of waves and sea winds needs to be considered during the construction process, and the marine soil used for underwater loads needs to be reinforced to improve stability. The traditional method is to use external grouting Mechanisms carry out cement grouting to marine soil for reinforcement, such as a kind of vibro grouting equipment and processing method for reinforcing the foundation of seabed soil with the publicati...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the economic level, construction projects are no longer limited to the land, and with the continuous reduction of the available land area, people's use and development of the ocean is also increasing year by year. In marine geotechnical engineering, whether it is bridge engineering , subsea tunnels or offshore platforms, etc., the impact of waves and sea winds needs to be considered during the construction process, and the marine soil used for underwater loads needs to be reinforced to improve stability. The traditional method is to use external grouting Mechanisms carry out cement grouting to marine soil for reinforcement, such as a kind of vibro grouting equipment and processing method for reinforcing the foundation of seabed soil with the publication number CN109440727A (hereinafter referred to as D1), D1 is to utilize vibro grouting equipment Grouting is performed after the loose soil on the seabed collapses to reinforce the loose soil around the pile foundation. However, this method needs to inject a large amount of cement and other cement into the seabed soil, which is likely to cause pollution to the marine environment.

[0003] The commonly used method of seabed soil reinforcement also has underwater freezing method, such as a kind of underwater artificial freezing plate whose publication number is CN205276250U (hereinafter referred to as D2), the seabed soil is reinforced by freezing, but when D2 freezes The flow of underwater ocean currents is not considered. When the seawater flows, it will take away a large amount of cold energy from the freezing plate, resulting in low underwater freezing efficiency and prolonging the construction period.

Images