Support device for submarine seismograph placement based on rigid connection

Abstract

The invention relates to a support device for submarine seismograph placement based on rigid connection, and belongs to the field of submarine earthquake monitoring. The support device comprises a main body bracket, a chassis, side support rods, a side cover, anti-jamming vertical pipes, a submarine seismograph, a metal wire fusing device, a metal wire and ropes, wherein the main body bracket is formed by connectionin a welding manner; the chassis is located at the central position of the bottom of the main body bracket; the side support rods are evenly distributed around the main body bracketand form included angles being 60 degrees together with the bottom surface of the main body bracket; the anti-jamming vertical pipes are vertically placed around the submarine seismograph; the side cover is tapered, and is connected with the side support rods by bolts; the submarine seismograph is erected above the chassis, and fixed by the ropes; the metal wire fusing device is arranged above the submarine seismograph to serve as a release device of the submarine seismograph; and the ropes are used for fixing the submarine seismograph to the chassis. The support device is mainly applied to placement and recovery of the submarine seismograph, can effectively improve the ability of the submarine seismograph to resist impact, erosion and trawl, and has the ability to maintain the normal operation of the submarine seismograph.

Description

technical field [0001] The invention belongs to the field of seabed seismic monitoring, and in particular relates to a rigid connection-based launching support device for a seabed seismograph, which is suitable for coupling the seabed seismograph to the seabed when it is used in shallow sea areas. Background technique [0002] The submarine seismograph is a seismograph designed for observing micro-vibrations caused by earthquakes and other crustal tectonic events on the seabed. [0003] At present, the deployment and recovery method of the submarine seismometer is to directly fix the submarine seismometer on the device, put it into the seawater from the sea surface, and the whole device sinks to the seabed by its own gravity; when recovering, the surface deck unit sends a release command to the The receiver fixed on the seabed seismograph, after receiving the release command, the receiver activates the release mechanism to separate the seabed seismograph from the device, and...

AI Technical Summary

Problems solved by technology

However, this kind of structure adopts a free delivery method. The moment the submarine seismograph contacts the bottom of the sea, it is very easy to cause violent vibrations, and this kind of structure has poor balance and stability. The impact of ocean currents is covered by sediment

At the same time, due to its open structure, it is often caught by the bottom trawl of the fishing boat, dragged and shifted, etc., resulting in insufficient coupling between the submarine seismograph and the seabed or even loss

In addition, if the natural frequency of the device structure is within the working frequency band of the submarine seismograph, it will affect the collection of submarine seismograph data and reduce the accuracy of data measurement

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