A group of offshore soil seabed jet disturbance devices

Abstract

The invention discloses a group of offshore soil seabed jet disturbance devices, which include a shallow jetting vehicle and a deep jetting hammer; the front and rear axle barrels of the shallow jetting vehicle are hollow inside, and the bottom is provided with multiple rows of jetting holes, and the two ends of the shaft barrel are hollow. The rotating shaft is set, and the walking wheels are installed on the rotating shaft; the upper parts of the front and rear axle barrels are fixedly connected with the drag bucket, and the counterweight can be placed in the drag bucket, and the rotating shaft of the front axle barrel is equipped with a bracket that can rotate around it; After the first water injection pipe is installed in the rear axle barrel based on the first water inlet hole, the high-pressure water flow enters the interior of the axle barrel and can be sprayed out from multiple rows of spray holes to scour the seabed soil; the interior of the deep spray hammer is hollow, and multiple Nozzle hole: connected with the second water injection pipe, the high-pressure water flow can be sprayed out from multiple nozzle holes after entering the interior of the deep jet hammer based on the second water injection pipe to scour the seabed soil. The combined use of the shallow-layer jetting vehicle and the deep-layer jetting hammer of the present invention can disturb and destroy the seabed soil in a relatively large depth range, and facilitate the subsequent penetration construction of torpedo anchors or barrel foundations.

Description

technical field [0001] The invention relates to the technical field of construction of deep-water cage mooring foundations, in particular to a group of offshore soil seabed jet disturbance devices. Background technique [0002] At present, my country's marine aquaculture has the problem of over-exploitation of near-shore areas and under-utilization of deep-water areas. Mariculture areas are mainly concentrated in the shallow inner bays within the 15-meter isobath, which is too saturated, and the utilization rate of sea areas with a water depth of more than 20 meters is less than 1%, which is far below the level of developed countries such as the United States, Japan, and Norway. Therefore, the development of offshore deep-water cage culture has become a long-term strategy for my country to ensure food supply and safety, and it has become an inevitable choice for expanding food production space. [0003] The anchoring system is the foundation of the cage in the water, and it...

AI Technical Summary

Problems solved by technology

However, if the torpedo anchor is used for the mooring foundation of the cage in the water depth of 20-40m in my country, there are the following problems: ①Compared with the deep sea floating platform, the water depth of the cage is relatively shallow, and the potential energy of the torpedo anchor is limited when it falls freely. It is difficult to penetrate into the deep seabed; ②When the torpedo anchor is used as the mooring foundation of the cage, its volume and weight need to be greatly reduced (otherwise the cost is too high to be popularized), and the reduction of the weight of the torpedo anchor will also make it difficult to Penetrate into the deep seabed; ③The seabed in some sea areas has a soil layer structure of "hard at the top and soft at the bottom", that is, the strength of the surface layer of the seabed is relatively high, while the lower part has silty soil with relatively low strength , the torpedo anchor needs to be penetrated into the deeper soil layer below to be safe, but the seabed soil with relatively high strength in the shallow layer prevents the penetration construction of the torpedo anchor

[0010] If the barrel foundation is used for the mooring foundation of the net cage in the water depth of 20-40m in my country, there are the following problems: ①The water depth of the net cage is relatively shallow, and the pressure difference between the inside and outside of the barrel foundation is limited during construction, so it is difficult to penetrate the barrel foundation. ②The seabed in some sea areas has a soil layer structure of "hard at the top and soft at the bottom", that is, the strength of the surface layer of the seabed is relatively high, while the lower part has silt soil with relatively low strength. The relatively high-strength seabed soil in the upper part prevents the penetration construction of the barrel foundation

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