CN211263794U - Ocean bottom seismograph device suitable for coastal kelp - Google Patents

Abstract

The utility model relates to a submarine seismic detection field discloses a submarine seismograph device suitable for coastal zone, including big end down's concrete pouring body, be equipped with the cavity on the concrete pouring body, install the instrument cabin in the cavity, be equipped with the seismograph in the instrument cabin and for the battery pack of seismograph power supply solves the shallow sea broadband observation of continental rise, and current OBS instrument is with high costs and very easy technical problem such as being destroyed by fisherman trawling operation, can better with the seabed coupling, gather submarine seismic wave signal; the influence of ocean currents and trawling on the ocean bottom seismograph device suitable for the laminaria japonica aresch can be reduced; the volume is small, the layout is simpler, the cost is lower, and the recovery is convenient.

Description

Ocean bottom seismograph device suitable for coastal kelp

All as the field of technology

The utility model relates to a submarine seismic survey field especially relates to a submarine seismograph device suitable for strand kelp.

All the above-mentioned background techniques

At present, Ocean Bottom Seismographs (OBS) and Ocean Bottom flowing seismic observation arrays composed of the same are high and new technologies developed in recent years, have wide application in aspects of oil and gas exploration, scientific research, disaster prevention and reduction and the like, and are a new growth point in development of geophysical instruments and exploration technologies. The Ocean Bottom Seismograph (OBS) seismic detection technology is widely applied to the study of deep structures of marginal sea and ocean, natural seismic data can be recorded during operation, the blank of ocean seismic monitoring and ocean seismic research in China is filled, and the monitoring capability of an ocean seismic region is obtained.

The existing international long-term observation OBS can generally work for 6-12 months on the seabed for a long time, a sonar transducer is adopted for awakening, and an instrument floats upwards after a weight is released; the conventional broadband long-term observation OBS instrument is large in size, complex in layout and high in system cost, and is suitable for deep sea layout. The coastal kelp, namely the zone from the outer edge of the coastal plain to above the sea wave base level, has high instrument cost and is very easy to be damaged by trawling operation of fishermen for earthquake observation in the range, such as by adopting a conventional OBS mode.

All kinds of practical novel contents

The utility model aims at providing a submarine seismograph device suitable for strand kelp solves current OBS instrument with high costs and is destroyed by fisherman trawl operation very easily problem.

In order to realize the purpose of the utility model, the utility model adopts the technical scheme that: the ocean bottom seismograph device suitable for the laminaria japonica aresch comprises a concrete casting body with a small upper part and a large lower part, wherein a cavity is formed in the concrete casting body, an instrument cabin is installed in the cavity, and a seismograph and a battery assembly for supplying power to the seismograph are arranged in the instrument cabin.

Preferably, the concrete casting body is provided with a plurality of hook handles.

Preferably, the concrete casting is in the shape of a circular truncated cone, a spherical table, a spherical cap or a combination thereof.

Preferably, the cavity is provided with a window for being installed in the instrument chamber, and the window is provided with a first cover plate.

Preferably, the outer surface of the concrete casting is sprayed with orange paint.

Preferably, the weight of the concrete casting is in the range of 400-2000 kg.

Preferably, an instrument chamber upper cover is arranged on the instrument chamber, and the instrument chamber is connected with the instrument chamber upper cover in a sealing mode.

Preferably, a plurality of zinc alloy sacrificial anodes are arranged on the outer wall of the instrument chamber.

Preferably, the instrument cabin upper cover is provided with a watertight joint, and the watertight joint is provided with a plug.

Preferably, the battery pack comprises a plurality of batteries, and the battery pack is circumferentially arranged on the periphery of the seismograph.

The utility model has the advantages that:

compared with the prior art, the utility model can be well coupled with the seabed to collect the seabed seismic wave signals; the influence of ocean current and the submarine trawl at the seashore can be reduced; the volume is small, the layout is simpler, the cost is lower, and the recovery is convenient.

Description of the drawings

Fig. 1 is a schematic top view of a truncated cone-shaped embodiment of the present invention;

FIG. 2 is a schematic side view of FIG. 1;

FIG. 3 is a schematic top view of an embodiment of an instrument pod;

FIG. 4 is a schematic isometric view of an embodiment of an instrument pod;

FIG. 5 is a schematic view from above of the interior of an instrument pod embodiment;

FIG. 6 is a schematic diagram of a marine launch or recovery situation;

wherein the reference numerals are: 1. a zinc alloy sacrificial anode; 2. a watertight joint; 3. pouring concrete; 4. a hook handle; 5. an instrument pod; 6. an instrument chamber upper cover; 7. a seismograph; 8. a battery assembly; 9. a cabin surface; 10. a first cover plate; 11. a shipboard crane; 12. provided is an offshore operation ship.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

(specific embodiments) in all cases

As shown in fig. 1-6, a submarine seismograph device suitable for laminaria japonica aresch comprises a concrete casting 3 with a small top and a large bottom, preferably, the concrete casting 3 is in the shape of a round table, a spherical cap or a combination thereof, the concrete casting 3 has a weight range of 400-2000 kg, preferably 500 kg, in short, the concrete casting 3 has a small top and a large bottom, plus a certain self-weight, which is beneficial for the present invention to sink to the seabed and be better coupled with the seabed, and can reduce the influence of ocean currents, especially at shallower laminaria japonica aresch, and can avoid the influence of trawl on the present invention, the concrete casting 3 has a cavity from top to bottom, the cavity is provided with an instrument chamber 5 through bolts, the instrument chamber 5 is provided with a seismograph 7, and a battery assembly 8 for supplying power to the seismograph 7, wherein the seismograph 7 and the battery assembly 8, the battery pack 8 can comprise a plurality of batteries, and in a better embodiment, the battery pack 8 is uniformly arranged at the periphery of the seismograph 7 circumferentially, so that the self balance of the ocean bottom seismograph device suitable for the laminaria japonica aresch can be improved, and the ocean bottom seismograph device can be better coupled with the ocean bottom. The utility model can be well coupled with the seabed to collect the seabed seismic wave signals; the influence of ocean current and trawl on the utility model can be reduced; the volume is small, the layout is simpler, the cost is lower, and the recovery is convenient.

In a preferred embodiment, the concrete casting 3 is provided with a plurality of hooking handles 4, if one hooking handle 4 is adopted, the hooking handle can be arranged above the concrete casting 3, if a plurality of hooking handles 4 are adopted, the hooking handles can be uniformly arranged on the concrete casting 3 circumferentially, and the number of the hooking handles can be two, three, four, five or six, and the hooking handles can be set as required.

In a preferred embodiment, the cavity is provided with a window for installing the instrument pod 5, the window is provided with a first cover plate 10, the first cover plate 10 is preferably made of organic glass material and is fixed at the window through bolts, marine organisms such as fish and shrimps are prevented from entering the inner cavity, namely a gap between the instrument pod 5 and the concrete pouring body 3, and the wave forms are prevented from being disturbed.

In a preferred embodiment, the outer surface of the concrete casting 3 is sprayed with orange paint, so that frogmans can find the orange paint conveniently.

In a preferred embodiment, an instrument chamber upper cover 6 is arranged on the instrument chamber 5, the instrument chamber 5 is hermetically connected with the instrument chamber upper cover 6, and the instrument chamber upper cover 6 is fixed on the instrument chamber 5 in a bolt fastening mode.

In the preferred embodiment, a plurality of zinc alloy sacrificial anodes 1 are arranged on the outer wall of the instrument chamber 5, namely the chamber body surface 9, so as to prevent seawater from corroding the instrument chamber 5.

In the preferred embodiment, the instrument cabin upper cover 6 is provided with the watertight connector 2, the watertight connector 2 is provided with a plug, and after the assembly is finished, the watertight connector 2 is plugged by the plug.

The throwing method of the ocean bottom seismograph device suitable for the kelp comprises the following steps:

1. after the ocean bottom seismograph device suitable for the coastal kelp is installed, the ocean bottom seismograph device is transported to a test target site of the coastal kelp by an offshore operation ship 12;

2. the lifting rope penetrates through a hook handle 4 on the concrete pouring body 3, and a shipboard crane 11 hooks the lifting rope to lift the sea bottom seismograph device suitable for the laminaria japonica aresch, and the sea bottom seismograph device is thrown into the sea, and records accurate geographical longitude and latitude so as to facilitate later recovery.

(II) the recovery method of the ocean bottom seismograph device suitable for the kelp beach:

1. the sea-bottom seismograph device suitable for the laminaria japonica is searched by marking and throwing longitude and latitude, driving the offshore operation ship 12 to a target test site, and submerging the offshore operation ship into the sea bottom by using an underwater robot or a frogman;

2. after the ocean bottom seismograph device suitable for the seashore is found, the hook handle 4 which is tied tightly on the concrete pouring body 3 by the tension rope, and the crane 11 on the ship pulls the utility model out of the sea surface, thus completing the recovery of the utility model;

3. the offshore operation ship 12 transports the ocean bottom seismograph device suitable for the laminaria japonica aresch to land, opens the first cover plate 10, takes out the instrument cabin 5 from the inner cavity of the concrete cast body 3, cleans benthos and sand on the surface 9 of the cabin body and the upper cover 6 of the instrument cabin, places the cabin body and the sand in a dry environment for drying, and then opens the upper cover 6 of the instrument cabin;

4. and taking out the seismograph 7, taking out the data storage card from the seismograph 7, and reading the data by using software to achieve the final observation purpose.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent changes made by the shape, structure and principle of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The ocean bottom seismograph device is characterized by comprising a concrete casting body with a small upper part and a large lower part, wherein a cavity is formed in the concrete casting body, an instrument cabin is installed in the cavity, and a seismograph and a battery assembly for supplying power to the seismograph are arranged in the instrument cabin.

2. The marine seismograph apparatus for laminaria maritima according to claim 1, wherein the concrete casting is provided with a plurality of hook handles.

3. The marine seismograph apparatus for seashore sea tangles, according to claim 1, wherein the concrete casting is in the shape of a truncated cone, a truncated sphere, a spherical cap, or a combination thereof.

4. The marine seismograph apparatus for seashore sea tangles, according to claim 1, wherein the cavity is provided with a window for receiving the instrument pod, the window being provided with a first cover plate.

5. The marine seismograph apparatus for laminaria maritima according to claim 1, wherein the outer surface of the concrete casting is painted with orange paint.

6. The ocean bottom seismograph device suitable for the laminaria maritima according to claim 1, wherein the weight range of the concrete casting is 400-2000 kg.

7. The marine seismograph device for laminaria maritima according to claim 1, wherein an instrument bay upper cover is provided on the instrument bay, and the instrument bay upper cover are hermetically connected.

8. The marine seismograph apparatus for laminaria maritima according to claim 1, wherein the outer wall of the instrument bay is provided with a plurality of zinc alloy sacrificial anodes.

9. The marine seismograph apparatus for laminaria maritima according to claim 1, wherein the instrument bay cover is provided with a watertight connector, and the watertight connector is provided with a plug.

10. The marine seismograph apparatus for laminaria maritima according to any one of claims 1-9, wherein the battery assembly comprises a plurality of batteries, and the battery assembly is circumferentially arranged around the perimeter of the seismograph.

Images