CN114895356A

CN114895356A - Seabed arrangement structure and method of fixed linear array

Info

Publication number: CN114895356A
Application number: CN202210536971.2A
Authority: CN
Inventors: 王帅; 龚凯; 朱张立
Original assignee: 715th Research Institute of CSIC
Current assignee: 715th Research Institute of CSIC
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-12

Abstract

The invention belongs to the technical field of fixed linear arrays, in particular to a seabed arraying structure of a fixed linear array, which mainly comprises weights, floating balls, a linear array, a steel wire rope, a strong rope, a metal Harvard clamp, a nylon Harvard clamp and a cable rope, wherein the weights are respectively fixedly arranged at two ends of the steel wire rope, the linear array is arranged at one side of the steel wire rope, the nylon Harvard clamps are arranged at equal intervals along the length direction of the linear array, the nylon Harvard clamps are respectively tied with a strong rope, the nylon Harvard clamps are connected with the metal Harvard clamp through one end of the strong rope, the metal Harvard clamps are arranged on the steel wire rope at equal intervals, the two ends of the linear array are respectively connected with a floating ball through the strong rope, and the two ends of the linear array are fixed on the weights at two ends of the steel wire rope through the strong ropes arranged in a diagonal way, the invention realizes the omnibearing acquisition of acoustic signals and simultaneously limits the matrix type distortion caused by ocean current disturbance, the stress of the linear array in the arranging process is reduced, so that the arrangement is safer and more effective.

Description

Seabed arrangement structure and method of fixed linear array

Technical Field

The invention belongs to the technical field of fixed linear arrays, and particularly relates to a seabed arrangement structure and a seabed arrangement method of a fixed linear array.

Background

The linear array can be divided into two types, a towed linear array and a fixed linear array, according to whether the array position is moved when the linear array is operated. The towed linear array is towed by a ship to move forwards, can detect large-scale submarine geological features, petroleum deposits and other data, and can also acquire marine information such as fish swarm behaviors and the like. The fixed linear array is generally laid on the seabed, and can be used for sea area monitoring in the field of national defense and can also be used for exploring the characteristics of passing ships or marine ecosystems. The traditional fixed linear array is fixed with heavy objects at two ends and then is sunk into the sea bottom and then is straightened, so that the linear array is approximately linearly unfolded in seawater, the fixing method of the linear array is easy to cause array bending due to ocean current disturbance, the receiving of acoustic signals can be influenced by the sediment at the sea bottom, meanwhile, in the straightening process, the linear array is directly applied with pulling force, and the linear array has the risk of breakage.

At present, patents CN109283513A and CN2909208Y relate to a method for arranging arrays, but the method is obviously different from the patent, and the method for arranging arrays in CN109283513A is suitable for the surface of an inner lake and cannot be suitable for deeper seabed; CN2909208Y is to straighten the linear array by the paddle type torsion balance propeller at the two ends of the linear array, and the structure is complicated and the working depth and the posture can not be effectively controlled. In the research on the layout scheme of the distributed optical fiber sensing system of the submarine pipeline, the layout method of the submarine pipeline with the optical fiber sensor is mentioned, but the method is obviously different from the application occasion and the layout method of the invention, the pipeline with the optical fiber sensor is used for transmitting oil and gas resources, the requirement on layout is low, and the influence of silt and ocean current is not considered.

Disclosure of Invention

The invention provides a seabed arraying structure and a seabed arraying method of a fixed linear array, which can avoid shielding of sediment on the seabed on an acoustic sensor, realize omnibearing acquisition of acoustic signals, limit array distortion of the fixed linear array caused by ocean current disturbance, reduce the stress of the linear array in the arraying process and ensure that the arraying is safer and more effective.

The invention provides the following technical scheme:

the utility model provides a seabed cloth matrix structure of fixed line array, mainly includes heavy object, floater, line array, wire rope, powerful rope, metal haversian clamp, nylon haversian clamp and hawser, the wire rope both ends are the fixed heavy object that is provided with respectively, the line array sets up in wire rope one side, equidistantly along the line array length direction install the nylon haversian clamp, all be tied on the nylon haversian clamp and have a powerful rope, the nylon haversian clamp is connected with the metal haversian clamp through powerful rope one end, the equidistant installation of metal haversian clamp is on wire rope, the line array both ends are connected with a floater through powerful rope respectively, and the line array both ends are fixed on the heavy object at wire rope both ends through the powerful rope that draws the setting to one side.

Preferably, one end of the weight on the steel wire rope is tied with a cable, and one end of the cable is connected with a floating ball.

Preferably, the density of the linear array is smaller than that of seawater, and the linear array is fixed on the steel wire rope at equal intervals through strong ropes which are arranged at equal length.

Preferably, the steel cord has a weight and strength matching the weight of the weight, and is less susceptible to bending by external influences after the tensile arrangement.

Preferably, the buoyancy of the floating balls at the two ends of the linear array and the tension of the obliquely-pulled strong rope generate transverse tension in opposite directions at the two ends of the linear array.

A seabed arrangement method of a fixed linear array comprises the following specific steps:

the first step is as follows: nylon haver clamps are fixed on the linear array at equal intervals in advance, and metal haver clamps are fixed on the steel wire rope at equal intervals and used for fixing equal-length strong ropes between the linear array and the steel wire rope;

the second step is that: the lower parts of the head and the tail ends of the linear array are connected with a heavy object and a steel wire rope through a strong rope arranged in a diagonal manner, and the upper parts of the head and the tail ends of the linear array are connected with floating balls through the strong rope;

the third step: releasing a heavy object and a steel wire rope on the mother ship, simultaneously releasing the linear array, and connecting a nylon haver clamp and a metal haver clamp by using a strong rope;

the fourth step: when the release length of the steel wire rope is approximately equal to the water depth, the steel wire rope is released, and the mother ship moves forwards until the steel wire rope is placed at the tail end of the steel wire rope;

the fifth step: connecting a heavy object at the tail end of the steel wire rope with the cable, continuously releasing the cable, and simultaneously moving the mother ship forwards until the length of the cable is equal to 2 times of the water depth, and stopping releasing the cable;

and a sixth step: the mother ship continues to move forwards until the distance from the mother ship to the release point is greater than the sum of the lengths of the linear array and the lowered cable;

the seventh step: all the cables are released, and floating balls are tied at the tail ends of the cables and placed on the sea surface for use in collapse.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

1. the array structure and the method can suspend the linear array at a position with a certain distance from the seabed, avoid the shielding of the sediment at the seabed on the acoustic sensor and realize the omnibearing acquisition of acoustic signals.

2. The linear array is fixed on the straightened steel wire rope at equal intervals, and the linear array is straightened by utilizing the combined force of the floating balls at the head end and the tail end and the diagonal strong ropes, so that formation bending caused by ocean current disturbance after the arrangement is avoided.

3. The linear array is fixed on the steel wire rope, and the steel wire rope is only required to be straightened when the array is arranged, so that the direct stress of the linear array is avoided, and the array is more efficient and safer.

Drawings

FIG. 1 is a schematic diagram of an improved arrangement of the present invention;

fig. 2 is a schematic diagram of an improved pre-deployment structure of the present invention.

The figures are labeled as follows:

1-weight; 2-floating ball; 3-linear array; 4-a steel wire rope; 5-strong rope; 6-metal haversian; 7-nylon haversian; 8-cable.

Detailed Description

The technical solutions in the embodiments are clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present invention.

The traditional fixed line array seabed arrangement structure is shown in figure 2 in detail, weights are respectively fixed at the head end and the tail end of the line array, the line array is slowly placed into the seabed from the head end to the tail end, and the line array is straightened by a bearing cable at the tail end of the line array so as to be approximately linearly unfolded in seawater. The linear array after arraying is easy to be disturbed by ocean currents at the sea bottom to cause array bending, and simultaneously, sediment at the sea bottom can shield the acoustic sensor to influence the receiving of acoustic signals; meanwhile, in the straightening process, the array arranging method directly applies tension to the linear array, and the linear array has the risk of breakage.

As shown in the attached drawing 1, the seabed layout structure of the fixed line array mainly comprises weights 1, floating balls 2, a line array 3, a steel wire rope 4, a strong rope 5, a metal haversian clamp 6, a nylon haversian clamp 7 and a mooring rope 8, wherein the weights 1 are respectively fixedly arranged at two ends of the steel wire rope 4, the line array 3 is arranged at one side of the steel wire rope 4, the nylon haversian clamps 7 are arranged at equal intervals along the length direction of the line array 3, the strong rope 5 is tied on the nylon haversian clamp 7, the nylon haversian clamp 7 is connected with the metal haversian clamp 6 through one end of the strong rope 5, the metal haversian clamps 6 are arranged on the steel wire rope 4 at equal intervals, two ends of the line array 3 are respectively connected with one floating ball 2 through the strong rope 5, and two ends of the line array 3 are fixed on the weights 1 at two ends of the steel wire rope 4 through the strong rope 5 which is obliquely arranged.

Specifically, a cable 8 is tied at one end of the weight 1 on the steel wire rope 4, one end of the cable 8 is connected with the floating ball 2, and one end of the cable 8 is connected with the mother ship.

Specifically, the density of the linear array 3 is smaller than that of seawater, the linear array 3 is fixed on the steel wire rope 4 at equal intervals through the strong ropes 5 which are arranged at equal length, and the linear array 3 can be suspended above the seabed for a certain distance after being arranged.

Specifically, the weight and the strength of the steel wire rope 5 are matched with the weight of the heavy object 1, the steel wire rope is not easy to bend under the influence of the outside after being stretched and arranged, and the linear array 3 is fixed on the steel wire rope 4 at equal intervals through the equal-length strong ropes 5 to limit the deformation of the linear array 3.

Specifically, the buoyancy of the floating balls 2 at the two ends of the linear array 3 and the tension of the strong rope 5 arranged in a diagonal manner generate transverse tension in opposite directions at the two ends of the linear array to ensure that the linear array 3 is kept straight, the whole laying and recovering process is stressed through the steel wire rope 4 and the cable 8, and the linear array 3 is not stressed.

the first step is as follows: nylon haver clamps 7 are fixed on the linear array 3 at equal intervals in advance, and metal haver clamps 6 are fixed on the steel wire rope 4 at equal intervals and used for fixing the strong ropes 5 with equal length between the linear array 3 and the steel wire rope 4;

the second step is that: the lower parts of the head and the tail ends of the linear array 3 are connected with a heavy object 1 and a steel wire rope 4 through a strong rope 5 which is obliquely arranged, and the upper parts of the head and the tail ends of the linear array 3 are connected with a floating ball 2 through the strong rope 5;

the third step: releasing a heavy object 1 and a steel wire rope 4 on the mother ship, simultaneously releasing a linear array 3, and connecting a nylon haver clamp 7 and a metal haver clamp 6 by using a strong rope 5;

the fourth step: when the release length of the steel wire rope 4 is approximately equal to the water depth, the steel wire rope 4 is released, and the mother ship moves forwards until the steel wire rope 4 is released to the tail end;

the fifth step: connecting the weight 1 at the tail end of the steel wire rope 4 with the cable 8, continuously releasing the cable 8, and simultaneously moving the mother ship forwards until the length of the cable 8 is equal to 2 times of the water depth, and stopping releasing the cable 8;

and a sixth step: the mother ship continues to move forwards until the distance from the mother ship to the release point is greater than the sum of the lengths of the linear array 3 and the lowered cable 8;

the seventh step: all the cables 8 are released, and floating balls 2 are tied at the tail ends of the cables 8 and placed on the sea surface for use in array collection.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention.

Claims

1. The utility model provides a seabed arrangement structure of fixed linear array which characterized in that: mainly comprises a heavy object (1), a floating ball (2), a linear array (3), a steel wire rope (4), a strong rope (5), a metal Harvard clamp (6), a nylon Harvard clamp (7) and a mooring rope (8), the two ends of the steel wire rope (4) are respectively fixedly provided with a weight (1), the linear array (3) is arranged on one side of the steel wire rope (4), nylon haver clamps (7) are arranged at equal intervals along the length direction of the linear array (3), the nylon haver clamps (7) are tied with a strong rope (5), the nylon haver clamps (7) are connected with the metal haver clamps (6) through one ends of the strong ropes (5), the metal Harvard clamps (6) are arranged on the steel wire rope (4) at equal intervals, two ends of the linear array (3) are respectively connected with a floating ball (2) through a strong rope (5), and two ends of the linear array (3) are fixed on the heavy objects (1) at two ends of the steel wire rope (4) through strong ropes (5) which are arranged in a diagonal manner.

2. The seabed deployment structure of a fixed linear array of claim 1, wherein: one end of the heavy object (1) on the steel wire rope (4) is tied with a cable (8), and one end of the cable (8) is connected with a floating ball (2).

3. The seabed deployment structure of a fixed linear array of claim 1, wherein: the density of the linear array (3) is less than that of the seawater, and the linear array (3) is fixed on the steel wire rope (4) at equal intervals through strong ropes (5) which are arranged at equal length.

4. The seabed deployment structure of a fixed linear array of claim 1, wherein: the weight and the strength of the steel wire rope (5) are matched with the weight of the heavy object (1), and the steel wire rope is not easy to bend due to external influence after being stretched and arranged.

5. The seabed layout structure of the fixed linear array of claim 1, wherein: the buoyancy of the floating balls (2) at the two ends of the linear array (3) and the tension of the strong ropes (5) arranged in a diagonal manner generate transverse tension in opposite directions at the two ends of the linear array.

6. The seabed arrangement method of the fixed linear array according to any one of claims 1 to 5, which comprises the following steps:

the first step is as follows: nylon haver clamps (7) are fixed on the linear array (3) at equal intervals in advance, and metal haver clamps (6) are fixed on the steel wire rope (4) at equal intervals at the same time and used for fixing the strong ropes (5) with equal length between the linear array (3) and the steel wire rope (4);

the second step is that: the lower parts of the head and the tail ends of the linear array (3) are connected with a heavy object (1) and a steel wire rope (4) through a strong rope (5) which is arranged in a diagonal manner, and the upper parts of the head and the tail ends of the linear array (3) are connected with a floating ball (2) through the strong rope (5);

the third step: releasing a heavy object (1) and a steel wire rope (4) on the mother ship, simultaneously releasing a linear array (3), and connecting a nylon haver clamp (7) and a metal haver clamp (6) by using a strong rope (5);

the fourth step: when the release length of the steel wire rope (4) is approximately equal to the water depth, the steel wire rope (4) is placed, and the mother ship moves forwards until the steel wire rope (4) is placed to the tail end;

the fifth step: connecting a heavy object (1) at the tail end of the steel wire rope (4) with the cable (8), continuously placing the cable (8), and simultaneously moving the mother ship forwards until the length of the cable (8) is equal to 2 times of the water depth, and stopping placing the cable (8);

and a sixth step: the mother ship continues to move forwards until the distance from the mother ship to the release point is greater than the sum of the lengths of the linear array (3) and the lowered cable (8);

the seventh step: releasing all the cables (8), tying floating balls (2) at the tail ends of the cables (8), and placing the cables on the sea surface for use during array collection.