KR100945693B1 - Seismic source generating device for marine seismic exploring - Google Patents

Abstract

The present invention relates to an ocean acoustic wave exploration transmission source generator, the elastic wave shock generator for generating a seismic wave is dropped by the elasticity of the spring to install the acceleration spring on the transmission rod to maximize the acoustic wave energy, and is driven by a motor Not only can the elastic wave energy source propagate without loss in the water, but also increase the acceleration by the drop or acceleration spring caused by gravity, and maximize the generated acoustic wave energy. An object of the present invention is to provide a marine acoustic wave exploration transmission source generator that allows a uniform velocity of a sea wave, and includes: a probe sailing at a constant speed, an elastic wave generating means installed on the probe to generate a seismic wave, and a hydrophone receiving the returned acoustic wave. Hydrophone) and teeth A seismograph for recording the seismic waves received through the hydrophone, the seismic wave generating means comprising: a seismic impact generator; A blow plate that propagates the impact of the impact generator in water to generate vibration; And a case support for accommodating the elastic wave impact generator therein.

Source, blower, source, acoustic wave, transmitting rod, spring, motor, hydrophone

Description

Seismic source generating device for marine seismic exploring

The present invention relates to a transmission source generator for marine seismic wave exploration. More specifically, an elastic spring shock generator for generating elastic waves falls by elasticity of a spring, and an acceleration spring is installed on a transmission rod to maximize the acoustic wave energy. It is made to be driven by the energy source through the generation of seismic waves in the water, as well as to the source generator of the sea seismic exploration that can obtain high-quality data for the field conditions.

In general, when a shock such as dynamic force is applied in the water, the vibration is generated, and the vibration is propagated to the underwater and the bottom ground in the form of a wave.

This is called 'elastic wave'. That is, a wave of elastic vibration passing through the elastic body is called an elastic wave, and sound waves and seismic waves belong to this.

An elastic wave is classified into a longitudinal wave in which the elastic medium is mainly vibrated and displaced in parallel to the direction of wave propagation, and a transverse wave in which the elastic medium vibrates and displaces perpendicular to the wave direction.

These seismic waves propagate in the seabed stratum media and are reflected or refracted at the stratum interface where the properties (density and seismic velocity) of the media are different, some of the refractions are transmitted underground and some of them are reflected underwater. .

On the other hand, as a method of exploring seismic waves, a physical exploration technique for generating waves with artificial energy such as blow or dynamite blasting to detect and interpret waves reflected or refracted at deep portions is generally applied. And refraction seismic surveys.

Here, the reflection seismic survey is similar to the principle of echo-sounding, so the image of the underground structure appears like a tomography. There are various technical problems in determining and interpreting the refraction. Since refraction seismic exploration uses only easy-to-identify first arrival, refraction is easy to distinguish, but geological structures such as monolayers and joints are intact. It appears differently, so it requires expertise and a lot of experience to interpret it.

As described above, an exploration device is required for exploration of strata and strata of strata and seabeds using seismic waves. Such exploration apparatuses are mainly classified into seismic sources, hydrophones, and recording devices (Seismograph). As a source of marine seismic waves, a sound source using a boomer method or an air-gun method is used.

However, in the case of the Boomer method, the use of explosive energy sources such as dynamite can generate a strong and ideal spike signal, but it is not only restricted in use but also causes pollution and safety problems. There is.

On the other hand, in the case of the air gun designed to generate instant pressure impulse in the water, the high-pressure air is rapidly released in the water to generate sound waves. Recently, it has been applied and used a lot to reduce the bubble effect, but it requires a lot of peripheral devices such as a large-capacity compressor for generating compressed air, which not only reduces the space utilization, but also requires a large amount of power supply. There is a problem in that it requires expensive purchase costs.

The present invention is to solve the problems existing in the conventional source as described above, to increase the energy by a small capacity of the motor, to generate the vibration of the elastic wave of a certain interval while increasing the energy by the gravity and the elasticity of the spring to the increased energy The problem is to provide a source generator that does not have to worry about causing pollution and safety problems, does not need a large amount of peripheral equipment, space and a large amount of power, and is inexpensive.

In order to achieve the above object, the present invention, the probe to navigate the seabed terrain at a constant speed; A seismic wave generating means installed on the probe to generate seismic waves; A hydrophone which is generated by the generating means and receives a wave propagating back to the sea bed and returning; And a recording device (Seismograph) for recording the wave received through the hydrophone.

Here, the probe may not be driven by itself, but may be a non-powered ship towed by the main ship or may be formed in a buoy form.

The acoustic wave generating means includes an elastic wave impact generator for generating an elastic wave by physical impact; A blow plate that propagates the impact of the impact generator in water to generate vibration; And a case support for accommodating the elastic wave impact generator therein.

Where the seismic impact generator is

A transmission rod having a fixed jaw protruding from an outer periphery of the lower end, a horizontal rod connected in a horizontal direction to an upper end of the transmission rod, a horizontal guide having a plate shape in which a through hole is formed in place so that the transmission rod is penetrated, and the horizontal guide A transmission unit comprising a vertical guide connected to one end portion in a vertical direction and an acceleration spring interposed between the lower surface of the through hole of the horizontal guide and the fixing jaw of the transmission rod; And

A motor driven by electrical power or mechanical power by an internal combustion engine, the motor having a motor shaft at the center thereof, and a rotating plate rotatably connected in parallel with the motor shaft, with a swivel protruding from one side edge thereof. It comprises a drive; made.

At this time, one side end of the horizontal bar is provided with a guide wheel to be able to move up and down on the vertical guide.

In addition, a transmission rod guide having a guide hole for guiding the lifting and lowering of the transmission rod is provided on the upper surface of the through hole formed in the horizontal guide.

Meanwhile, the blow plate is made of stainless steel.

And a trigger device for measuring the acoustic wave energy is provided in the blow plate.

And it is possible to reduce the friction between the swivel and the horizontal bar by adding a rod-shaped rotary ball that can be rotated without being inserted into the swivel to be detached.

The present invention is to install the acceleration spring in the transmission rod to maximize the acoustic wave energy by dropping the elastic wave impact generator for generating the elastic wave by the elasticity of the spring, and is driven by a motor to lose the energy source through the generation of the acoustic wave underwater Not only can it propagate without vibration, but also it can maximize the elastic wave energy generated by the acceleration by the drop by the gravity or the acceleration spring, and the strong generation of the elastic wave and the uniform speed of the generated acoustic wave are possible, It is simple to manufacture and maintain, easy to carry out on-site exploration work, which reduces the cost of exploration, and it is possible to replace the impact plate with various materials and sizes so that oscillation of various frequency bands suitable for the site can be achieved. Is possible, which makes it possible to This can have the effect of obtaining quality data.

In addition, there is a side effect of minimizing the occurrence of pollution and safety problems, eliminating the need for large-capacity peripherals and power, and reducing the price.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing an elastic wave impact generator of an ocean acoustic wave exploration transmission source generator according to the present invention, FIG. 2 is a view schematically showing a driving unit of an elastic wave impact generator according to the present invention, and FIG. 4, 5, 6, 7, 8, and 9 are diagrams schematically illustrating a transmitting unit of an elastic wave impact generator. 10 is a diagram schematically illustrating a state in which an elastic wave impact generator of an ocean acoustic wave exploration transmission source generator according to the present invention is installed on a case support, and FIG. 11 is a marine acoustic wave exploration transmission source generator installed according to the present invention. Fig. 12 is a diagram schematically showing a state, and Fig. 12 is an ocean acoustic wave exploration transmitting source according to the present invention. A view schematically showing a state that the exploration of seabed topography through the production apparatus.

As shown in the drawings, the marine seismic detection source generator according to the present invention is a navigation ship 10 for exploring the seabed topography while sailing at a constant speed, and is installed on the lower side of the probe 10 to provide a seismic wave Accommodate the elastic wave shock generator 30 and the shock wave generator to generate therein, the case support 50 is interconnected by a plurality of frames, and is installed on the lower surface of the probe 10, the elastic wave shock generator 30 ) Is installed at a position corresponding to the blow plate 70 to propagate the vibration of the acoustic wave, and is connected to the rear end of the probe 10 by a cable 81 and provided with a plurality of spaced apart a predetermined distance to the elastic wave impact generator 30 Through the hydrophone (80) and the hydrophone (80) for receiving the elastic waves generated by the reflection or refraction reflected back from the seabed terrain And a recording device (Seismograph: not shown) for recording the received acoustic waves.

Here, the impact plate 70 for propagating the elastic wave according to the elastic energy generated through the elastic wave impact generator 30 is located in the water below the probe 10, the elastic energy provided by the elastic wave impact generator 30 The blow plate 70 is made of stainless steel, which is durable and has a high strength so as not to be damaged by the damage and installed in water.

At this time, the material, size and thickness of the hitting plate 70 can be applied in various ways to meet the conditions of the exploration site, thereby oscillating various frequency bands suitable for the site to obtain high quality data.

On the other hand, the case support 50 is preferably a separate cover case is installed on the upper portion to prevent water from penetrating when used in the sea, it is accommodated therein by the cover case and the case support (50) It is preferable to protect the elastic wave impact generator 30 to be.

The elastic wave impact generator 30 is configured to include a transmitter 31 and a drive unit 37, the transmitter 31 is a rod-shaped body, the fixing jaw (32a) protruding in the circumferential direction on the outer periphery of the lower end And the diameter of the transmission rod 32 in place so that the transmission rod 32, the horizontal rod 33 connected horizontally to the upper end of the transmission rod 32, and the transmission rod 32 are installed therethrough. A horizontal guide 34 having a plate shape through which a through hole 34a having a corresponding diameter is formed, a vertical guide 35 vertically connected to one end of the horizontal guide 34, and the horizontal guide. Interposed between the lower surface of the through hole (34a) of the 34 and the fixing jaw (32a) of the transmitting rod 32 is composed of an acceleration spring (32b) having elasticity.

At this time, the horizontal bar 33 connected in the horizontal direction to the upper end of the transmitting rod 32 is connected to the transmission rod 32 to be deflected to one side. That is, the horizontal bar 33 has a structure and a shape in which the transmitting rod 32 is not connected to the center thereof in the vertical direction, but the transmitting rod 32 is connected in the vertical direction to a position deviating from a predetermined portion thereof.

Here, the guide wheel 33a is provided at one side end of the horizontal bar 33 to move up and down on the vertical guide 35. That is, the horizontal bar 33 is moved up and down at one end of the horizontal bar 33 located on the vertical guide 35 side of both ends of the horizontal bar 33 which is connected to the transmission rod 32 to be deflected to one side. Guide wheels 33a are provided to enable them.

When the horizontal bar 33 is moved up and down by the structure as described above, the guide wheel 33a provided on the horizontal bar 33 is moved up and down while being guided up and down along the vertical guide 35.

To this end, it is also preferred that the vertical guide 35 is provided with a rail having a shape corresponding to the guide wheel 33a.

In an embodiment of the present invention, a guide wheel 33a is provided to assist the elevating at one end of the horizontal bar 33, and the guide wheel 33a is moved up and down along the vertical guide 35. However, if the horizontal bar 33 is easy to move up and down on the vertical guide 35, the lifting structure consisting of the guide wheel 33a and the vertical guide 35 may be made of various other structures. Do.

On the other hand, the transmission rod guide 36 for preventing and guiding the separation of the transmission rod 32 is moved up and down on the upper surface of the through hole (34a) formed in the horizontal guide 34, the transmission rod guide Guide holes 36a having a diameter corresponding to the diameter of the transmitting rod 32 are formed in the through hole 36.

Here, the drive unit 37 is driven by electrical power, the center of which is rotatably connected in the same line to the motor 38 and the motor shaft 38a having a motor shaft 38a protruding at the center thereof. , Rotating plate (39a) is formed on the one side edge of the rotating plate 39 is protruding.

At this time, the horizontal bar 33 of the transmission unit 31 is introduced into the rotating plate 39 a predetermined portion. That is, one side of the horizontal bar 33 of the transmitter 31 moves the horizontal bar 33 upward so that the rotating table 39a protruding from one side edge of the rotating plate 39 rotates upward. It is positioned to overlap a predetermined portion on the rotating plate (39).

According to the structure and form as described above, the rotating table 39a provided on one side of the rotating plate 39 is rotated according to the rotation of the rotating plate 39, and the horizontal bar 33 is rotated by the rotating table 39a. ) Is moved upwards, and the transmitting rod 32 connected to the horizontal rod 33 is moved upward in accordance with the movement of the horizontal rod 33.

It is possible to reduce the friction between the rotating table 39a and the horizontal bar 33 by adding a rotating tool (not shown) capable of rotating to the rotating table 39a.

Here, it is also possible to further include a reducer for maintaining the rotational speed at a constant speed by adding or subtracting the rotational speed of the motor 38.

On the other hand, the impact plate 70 is provided with a trigger device 71 for measuring the acoustic wave energy generated through the acoustic wave impact generator 30.

Hereinafter, the driving process of the marine acoustic wave exploration transmission source generator according to the present invention will be described with reference to FIGS. 4, 5, 6, 7, 8 and 9.

First, the measurer drives the acoustic wave impact generator 30 of the marine acoustic wave exploration transmission source generator according to the present invention. That is, the elastic wave impact generator 30 is controlled to apply power to the motor 38 of the driving unit 37.

The motor shaft 38a formed at the center of the motor 38 is rotated by applying power to the motor 38 of the driving unit 37, and the rotating plate 39 connected thereto according to the rotation of the motor shaft 38a. ) Will rotate.

As described above, when the rotating plate 39 connected to the motor shaft 38a by the power applied to the motor 38 rotates, the rotating table 39a protruding from one side of the rotating plate 39 rotates in the circumferential direction. And, the rotating table (39a) is moved in the upward direction from the lower direction to abut the lower end of the horizontal bar 33 is positioned to overlap the predetermined portion on the rotating plate (39).

Thus, after the rotating table 39a of the rotating plate 39 abuts the lower end of the horizontal bar 33, the rotating table 39a presses and moves the horizontal bar 33 upwards by continuous rotation of the rotating plate 39. At the same time, the transmission rod 32 connected to the horizontal rod 33 is continuously moved upward.

As described above, the rotating table 39a of the rotating plate 39 continuously moves to move the horizontal bar 33 upward, and simultaneously moves the transmitting bar 32 upward to allow the horizontal guide 34 to move. And the acceleration spring interposed between the fixing jaw (32a) and continuously and after the rotating plate (39a) is moved by the rotation of the rotating plate 39 to be in contact with the horizontal bar 33 is released (see Fig. 7) When the acceleration spring interposed between the horizontal guide 34 and the fixing jaw 32a of the transmission rod 32 is decompressed and expanded, the transmission rod 32 moves downward at a high speed due to the elasticity of the acceleration spring. Fall down.

At this time, the strength of the impact generated through the transmission rod 32 by dropping the transmission rod 32 in the downward direction of the acceleration spring interposed between the horizontal guide 34 and the transmission rod 32 fixing jaw (32a) It depends on the elastic force.

In one embodiment of the present invention, by installing an acceleration spring between the horizontal guide 34 and the fixing jaw (32a) of the transmission rod 32 to maximize the acoustic wave energy due to the drop of the transmission rod 32, It is also possible to remove the acceleration spring between the horizontal guide 34 and the fixing jaw 32a of the transmitting rod 32 so that the transmitting rod 32 naturally falls by gravity to generate elastic waves.

Here, by controlling the power applied to the motor 38, by reducing the rotational speed of the rotating plate 39 connected to the motor 38 it can adjust the spacing of the elastic waves generated in the transmitting rod (32).

By the structure and form as described above, the horizontal bar 33 and the transmission rod 32 connected to the horizontal bar 33 repeatedly by the movement of the rotating table 39a according to the rotation of the rotating plate 39 in the upward direction By being made to fall after being moved, it is possible to generate a seismic wave with repeated and continuous impact.

As shown in FIG. 10, the acoustic wave shock generator 30 including the transmitting rod 32 falling downward by the elasticity of the acceleration spring is installed in the case support 50, and the inside of the case. As shown in FIG. 11, the acoustic wave impact generator 30 installed in the probe is installed on the probe 10 together with the case support 50, and the elastic wave shock generator 30 installed in the probe 10 is a rotating plate 39. The horizontal bar 33 and the horizontal bar 33 is moved upwards by the rotary table 39a moving in accordance with the rotation of the) and the transmission bar 32 is moved upward and the connection with the rotary table 39a is released. When the drop by the elasticity of the acceleration spring, the transmission rod 32 is installed on the lower surface of the probe 10, by hitting the blow plate 70 exposed in the water of the blow plate 70 Due to impact Generated and propagated underwater.

As described above, the elastic wave energy installed on the lower surface of the probe 10 and propagated through the striking plate 70 exposed to the water is propagated into the water and propagated as shown in FIG. 12. After the acoustic wave reflected or refracted in the seabed terrain is connected to the rear end of the probe 10 by a cable 81, received by a hydrophone (Hydrophone: 80) is provided with a plurality of spaced apart a certain distance, the hydrophone (80) The received acoustic wave is recorded by a recording device (Seismograph: not shown).

On the other hand, a triggering device 71 for measuring the acoustic wave energy generated by the striking plate 70 is installed inside the striking plate 70, and the triggering device 71 is provided to the elastic wave energy generated by the striking plate 70. To measure the data accordingly.

While the invention has been shown and described with respect to particular embodiments, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can grow up easily.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing a seismic impact generator of an apparatus for generating an ocean acoustic wave exploration transmission source according to the present invention;

2 is a view schematically showing a driving unit of an acoustic wave impact generator according to the present invention;

3 is a view schematically showing a transmitter of an acoustic wave impact generator according to the present invention;

4, 5, 6, 7, 8, and 9 are operation diagrams showing an operation process of the elastic wave impact generator of the marine acoustic wave exploration transmission source generator according to the present invention step by step;

10 is a diagram schematically illustrating a state in which an elastic wave impact generator of an ocean acoustic wave exploration transmission source generator according to the present invention is installed on a case support;

11 is a view schematically showing a state in which an ocean acoustic wave exploration transmission source generator according to the present invention is installed;

12 is a diagram schematically illustrating a state of exploring the topography of the seabed through the apparatus for generating an ocean acoustic wave exploration transmission source according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: probe, 30: seismic impact generator,

31: transmitting unit, 32: transmitting rod,

32a: jaw, 32b: acceleration spring,

33: horizontal bar, 33a: guide wheel,

34: horizontal guide, 34a: through hole,

35: vertical guide, 36: transmission rod guide,

36a: guide ball, 37: driving part,

38: motor, 38a: motor shaft,

39: rotating plate, 39a: rotating table,

50: case support, 70: blow plate,

71: trigger device, 80: hydrophone,

81: cable.

Claims (14)

A probe that navigates the surface at a constant speed, a source generator for generating seismic waves, a hydrophone for receiving seismic waves reflected or refracted by subsea terrain, and a recording device for recording seismic waves received in the hydrophones In the marine acoustic wave exploration equipment consisting of), An elastic wave impact generator in which the transmission source generator is installed inside the probe to generate an impact for generating an elastic wave; A case support for receiving the shock wave generator therein; And A blow plate installed at a lower surface of the probe to convert the shock generated by the elastic wave impact generator into vibration to propagate the elastic wave underwater; Consisting of The elastic wave impact generator is a plate-shaped guide to smoothly raise and lower the transmission rod by forming a transmission rod for impacting the impact plate, a horizontal rod connected in the horizontal direction to the upper end of the transmission rod, and a through hole so that the transmission rod is installed therethrough. Transmitter consisting of a horizontal guide on the image; And a motor driven by electrical power, the motor having a motor shaft provided at the center thereof, and rotatably connected to the motor shaft in the same line, and capable of pressing upward in contact with a lower portion of the horizontal rod at one side edge thereof. Including; a driving unit consisting of a rotating plate protruding Sea acoustic wave exploration transmission source generator, characterized in that made. delete The method of claim 1, A marine acoustic wave exploration transmission source generator characterized in that it further comprises a vertical guide connected to one end of the horizontal guide in a vertical direction for guiding the lifting and lowering of the horizontal bar. The method according to claim 1 or 3, The sea acoustic wave exploration transmission source generator, characterized in that the lower end of the transmission rod protruding to the outer periphery is added to the fixing jaw to directly impact the impact plate to generate an impact. The method of claim 4, wherein An marine spring is inserted between the outer periphery of the transmitting rod and an acceleration spring interposed between the lower surface of the through hole of the horizontal guide and the upper surface of the fixing jaw of the transmitting rod to increase the strength of the impact applied to the impact plate. Seismic survey source generator. The method according to any one of claims 1, 3 and 5, An ocean acoustic wave exploration transmission source generator, characterized in that the guide wheel is further provided to assist the lifting and lowering up and down on the vertical guide at one end of the horizontal bar. The method of claim 4, wherein An ocean acoustic wave exploration transmission source generator, characterized in that the guide wheel is further provided to assist the lifting and lowering up and down on the vertical guide at one end of the horizontal bar. The method according to any one of claims 1, 3 and 5, The marine acoustic wave exploration transmission source generator, characterized in that the transmission rod guide is further formed through the guide hole for guiding the lifting and lowering of the transmission rod on the upper surface of the through hole formed in the horizontal guide. The method of claim 4, wherein The marine acoustic wave exploration transmission source generator, characterized in that the transmission rod guide is further formed through the guide hole for guiding the lifting and lowering of the transmission rod on the upper surface of the through hole formed in the horizontal guide. The method according to claim 1 or 3, The blow plate is a marine acoustic wave exploration transmission source generator, characterized in that made of stainless steel material. The method according to claim 1 or 3, An ocean acoustic wave exploration transmission source generator, characterized in that the trigger device for measuring the acoustic wave energy in the blower plate is further provided. The method of claim 4, wherein An ocean acoustic wave exploration transmission source generator, characterized in that the trigger device for measuring the acoustic wave energy in the blower plate is further provided. The method according to any one of claims 1, 3 and 5, And a rod-shaped rotary ball capable of rotating while being inserted into the swivel so as to reduce friction between the swivel and the horizontal bar. The method of claim 4, wherein And a rod-shaped rotary ball capable of rotating while being inserted into the swivel so as to reduce friction between the swivel and the horizontal bar.

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