CN111750920A - Self-separating seabed foundation suitable for weak and inclined seabed and method of laying the same - Google Patents

Abstract

The invention provides an automatic separation type seabed base suitable for soft and inclined seabed and a laying method thereof, wherein the automatic separation type seabed base comprises a counterweight system and a seabed base platform, the seabed base platform comprises an upper frame and a lower frame, the lower frame is of a cubic structure, the upper half part of the lower frame is a hollow frame, the periphery of the lower half part of the lower frame is sealed with a top part by a steel plate, 8 stopping discs are arranged on four corners and side frames of the bottom part of the lower frame, pore water pressure detecting rods are fixedly arranged below the stopping discs at the four corners of the bottom part of the lower frame, the upper frame is arranged in the hollow frame at the upper half part of the lower frame and is fixed by a second trigger, a connecting rod is arranged at the center of the upper frame, the top end of the connecting rod is movably connected with the counterweight system by the first trigger, a cable is arranged in the hollow part of. Through the technical scheme of the invention, the settlement amount is reduced, the level of the carried monitoring equipment is ensured, the whole process is automatically operated, and the equipment is safely and conveniently recovered.

Description

Self-separating seabed foundation suitable for weak and inclined seabed and method of laying the same

technical field

The invention relates to the technical field of seabed foundations, in particular, to an automatic separation type seabed foundation suitable for weak and inclined seabeds and a deployment method thereof.

Background technique

It is a self-contained comprehensive measurement device that works on the seabed and is equipped with various seabed detection instruments on the seabed. meaning. However, the low bearing capacity of the weak seabed puts forward high requirements for the seabed foundation. When the seabed foundation works on the seabed, it is often difficult to recover due to the accumulation of sediment, causing difficulties in recovery. At the same time, due to the influence of terrain, On the inclined seabed, the ordinary seabed foundation cannot guarantee the ideal level of the monitoring equipment, which will affect the monitoring results and eventually cause the loss of marine data and property.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art, the present invention provides a self-separating seabed foundation suitable for weak and inclined seabeds and a method for laying the same.

The present invention is achieved through the following technical solutions: an automatic separation type seabed foundation suitable for weak and inclined seabeds, comprising a counterweight system and a seabed foundation platform, wherein the counterweight system comprises a steel pipe, and a lifter is installed on the top of the steel pipe. The lower part of the steel pipe is fixedly installed with a limit ring, the steel pipe between the handle and the limit ring is covered with a counterweight plate, and the bottom end of the steel pipe is fixed with a first bearing platform;

The seabed-based platform includes an upper frame and a lower frame, the lower frame is a cube structure, the upper half of the lower frame is a hollow frame, the lower half of the lower frame is sealed with steel plates around the top and the bottom of the lower frame. The stop plate, the pore water pressure probe is fixedly installed below the stop plate at the four corners of the bottom of the lower frame, the upper frame is placed in the hollow frame of the upper half of the lower frame and fixed by 4 sets of second triggers, the center of the upper frame is A connecting rod is installed, the top of the connecting rod is provided with a second bearing platform, the interior of the connecting rod is hollow and is equipped with a cable, and the other end of the cable is connected to the floating ball.

The first cap and the second cap are connected by a first trigger. The trigger consists of two L-shaped triggers. An iron bar is installed on the upper part of the trigger, and the iron bar is buckled on the first cap. The rod is installed on the second bearing platform, the shape of the first bearing platform is circular, the symmetrical sides of the first bearing platform are respectively provided with grooves that match the width of the trigger, and the middle of the upper surface of the groove is provided with the size of the iron bar. Matching iron bar grooves, the first trigger and the second trigger have the same structure. .

As a preferred solution, two steel plates are welded opposite to the sides of the upper frame as a guide plate.

As a preferred solution, monitoring instruments are mounted inside the upper frame.

As a preferred solution, a GPS locator is installed inside the floating ball.

As a preferred solution, 4 sets of second triggers are arranged on the top frame of the upper frame and the lower frame.

As a preferred solution, the size of the first platform is smaller than that of the second platform.

As a preferred solution, the shape of the second platform is circular.

As a preferred solution, the rotation angle of the trigger around the rotating rod is 0° to 90°.

A method for deploying an automatic separation type seabed foundation suitable for weak and inclined seabeds, the specific steps are as follows:

Step (1): the upper frame is placed in the hollow frame of the upper half of the lower frame, the two are connected by a second trigger, and the inner frame of the upper frame is equipped with monitoring equipment;

Step (2): The counterweight system is connected to the top of the connecting rod of the upper frame through the first trigger, the counterweight system is lifted by the winch, the counterweight system is connected to the upper frame through the first trigger, and the upper frame is connected to the lower frame through the second trigger. , and install the pore water pressure probe at the bottom of the lower frame of the seabed foundation after the entire seabed foundation is lifted;

Step (3): Lay the seabed foundation at the designated position through the winch, the first trigger between the counterweight system and the upper frame is disengaged, the counterweight system is recovered to the deck, and the float is preset in the connecting rod of the upper frame Float to locate the seabed foundation;

Step (4): After the monitoring is completed, open the second trigger to separate the upper frame and the lower frame, connect the upper frame to the upper frame through a cable connected to the floating ball, recover the upper frame and the monitoring equipment carried by it to the deck, and leave the lower frame on the deck. seabed.

Compared with the prior art, the present invention has the following beneficial effects due to the adoption of the above technical solutions:

1. Reduce the subsidence: the common seabed foundation is only suitable for in-situ long-term monitoring on the hard seabed due to the small supporting area of the bottom surface and the large weight of the equipment. If it is placed on the soft seabed, the bearing capacity of the seabed is weak. , the common seabed foundation will have a large subsidence, which will affect the accuracy of the monitoring data of the carrying equipment. The seabed foundation is not only installed with 8 stop disks at the bottom, but also the entire frame can seal a part of the air and keep it at the bottom of the seabed to prevent excessive settlement of the seabed foundation and ensure the safety of equipment and the accuracy of monitoring data.

2. Ensure the level of the monitoring equipment: Since the ordinary seabed can only perform long-term in-situ monitoring on the flat seabed, when it encounters a sloping seabed, the seabed will tilt, and the monitoring equipment cannot be guaranteed to be in a horizontal state. This affects the accuracy of monitoring data. When this seabed foundation encounters a sloping seabed, it penetrates into different depths through the pore water pressure probes below the four corners of the seabed foundation, thereby eliminating the influence of the seabed slope and making the seabed foundation in a horizontal position. status to ensure the accuracy of monitoring data.

3. Full automatic operation, no need for underwater operation by divers: ordinary seabed foundations need to be operated by divers in the process of deployment and recovery. However, the seabed foundation links the counterweight system and the small frame carrying monitoring equipment, the small frame carrying monitoring equipment and the large frame preventing the large subsidence of the seabed foundation through the trigger structure. After the seabed foundation is seated on the seabed, The trigger structure is automatically opened, the counterweight system is recovered by the winch, the seabed foundation is monitored on the seabed for a long time, and the positioning float is floated to position the seabed foundation. After completing the prescribed monitoring tasks, the frame carrying the equipment is recovered to the deck by a winch for positioning the floating ball cable, and the data of the monitoring equipment is read, and the larger frame is left on the seabed. The entire deployment and recovery process does not require a diver to enter the water.

4. Safe and convenient equipment recovery: ordinary seabed foundations may settle due to long-term monitoring on the seabed, which may cause damage to the seabed foundations during the recovery process of the winch. The seabed foundation only needs to recycle the frame of the equipment to ensure the safety of the equipment.

Additional aspects and advantages of the present invention will become apparent in the description section that follows, or will be learned by practice of the present invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the side view of the present invention;

Fig. 3 is the structural representation of the first trigger;

Fig. 4 is the working schematic diagram of the first trigger;

5 is a schematic top view of the structure of the first platform;

Figure 6 is a schematic diagram of the counterweight system,

Wherein, the corresponding relationship between the reference numerals and components in Fig. 1 to Fig. 6 is:

1 Counterweight System, 2 Seabed Platform, 3 First Trigger, 4 Upper Frame, 5 Lower Frame, 6 Stop Disc, 7 Pressure Probe, 8 Second Trigger, 9 Cable, 10 Float, 11 Deflector , 1-1 steel pipe, 1-2 lifting head, 1-3 limit ring, 1-4 counterweight plate, 1-5 first bearing platform, 3-1 iron bar, 3-2 rotating rod, 3-3 concave Slot, 3-4 iron bar groove, 4-1 connecting rod, 4-2 second socket.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. example limitations.

The following is a detailed description of the self-separating seabed foundation suitable for the weak and inclined seabed and the method for laying the same according to the embodiments of the present invention with reference to FIG. 1 to FIG. 6 .

As shown in Figures 1 to 6, the present invention proposes an automatic separation type seabed foundation suitable for weak and inclined seabed, comprising a counterweight system 1 and a seabed foundation platform 2, wherein, as shown in Figure 5, The counterweight system 1 includes a steel pipe 1-1, a lifting head 1-2 is installed at the top of the steel pipe 1-1, a limit ring 1-3 is fixedly installed at the lower part of the steel pipe 1-1, and the handle 1-2 and the limit ring 1-3 are connected between The steel pipe 1-1 between the two is covered with a counterweight plate 1-4, and the bottom end of the steel pipe 1-1 is fixedly equipped with a first bearing platform 1-5;

As shown in Figures 1 and 2, the seabed-based platform 2 includes an upper frame 4 and a lower frame 5. The lower frame 5 is a cubic structure for providing support to prevent the platform from sinking and lateral displacement. The upper half of the lower frame 5 is The hollow frame, the lower half of the lower frame 5 and the top are sealed with steel plates, using the principle similar to the suction anchor, part of the gas will be retained during the process of lowering the seabed foundation to prevent the seabed foundation from occurring on the weak seabed surface. settlement. Eight stop plates 6 are arranged on the four corners and the frame of the bottom of the lower frame 5 to prevent the seabed foundation from sinking greatly. Pore water pressure probes 7 are fixedly installed below the stop plates 6 at the four corners of the bottom of the lower frame 5 to prevent lateral displacement and monitor the pore water pressure when the seabed foundation is laid on the seabed. On the inclined seabed, the horizontal position of the entire seabed can be controlled through the different penetration depths of the seven pore water pressure probe rods 7 into the seabed. The upper frame 4 is placed in the hollow frame at the upper half of the lower frame 5 and fixed by four sets of second triggers 8 , and the upper frame 4 is equipped with monitoring instruments. A connecting rod 4-1 is installed in the center of the upper frame 4, and the top of the connecting rod 4-1 is provided with a second bearing platform 4-2, and a certain stroke is set, which is the counterweight system 1 in the process of laying the seabed foundation. A connection is provided between the upper frame 4 and the upper frame 4, and the first trigger 3 is automatically opened after the seabed base is placed on the seabed. The heavy system 1 is recovered to the deck, and the platform is deployed to the seabed for monitoring. The interior of the connecting rod 4-1 is hollow and is equipped with a cable 9. The other end of the cable 9 is connected to the floating ball 10. The floating ball 10 is equipped with a GPS locator. to locate. The sides of the upper frame 4 are oppositely welded with two steel plates as the deflectors 11 to prevent the seabed from rotating during the deployment process. 4 sets of second triggers 8 are arranged on the top frames of the upper frame 4 and the lower frame 5. After completing the monitoring task, the upper frame 4 and the lower frame 5 are automatically disengaged by the second triggers 8, the lower frame 5 remains on the seabed, and the upper The frame 4 is recovered together with the instruments carried on it.

As shown in Figures 3 to 5, the first platform 1-5 and the second platform 4-2 are connected by a first trigger 3, the first trigger 3 is composed of two L-shaped triggers, and the first trigger 3 is composed of two L-shaped triggers. An iron bar 3-1 is installed on the upper part, the iron bar 3-1 is buckled on the first platform 1-5, the middle part of the first trigger 3 penetrates the rotating rod 3-2, and the rotating rod 3-2 is installed on the second platform 4 On -2, the shape of the first bearing platform 1-5 is circular, and the symmetrical sides of the first bearing platform 1-5 are respectively provided with grooves 3-3 that match the width of the trigger 3, and the upper The middle of the surface is provided with an iron bar groove 3-4 matching the size of the iron bar 3-1, and the first trigger 3 and the second trigger 8 have the same structure. The size of the first platform 1-5 is smaller than that of the second platform 4-2. The shape of the second platform 4-2 is circular. The rotation angle of the first trigger 3 around the rotating rod 3-3 is 0° to 90°.

A method for deploying an automatic separation type seabed foundation suitable for weak and inclined seabeds, the specific steps are as follows:

Step (1): the upper frame 4 is placed in the hollow frame of the upper half of the lower frame 5, the two are connected by the second trigger 8, and the inner frame of the upper frame 4 is equipped with monitoring equipment;

Step (2): The top of the connecting rod 4-1 of the counterweight system 1 and the upper frame 4 is connected by the first trigger 3, the counterweight system 1 is lifted by the winch, and the counterweight system 1 is connected to the upper frame 4 through the first trigger 3 , the upper frame 4 is connected to the lower frame 5 through the second trigger 8, and the pore water pressure probe 7 is installed at the bottom of the lower frame 5 of the seabed after the entire seabed is lifted;

Step (3): The seabed foundation is placed at the designated position by the winch, and the first trigger 3 between the counterweight system 1 and the upper frame 4 is disengaged. The working process is shown in Figure 4, and the counterweight system 1 is recovered to the deck. , the floating ball 10 preset in the connecting rod 4-1 of the upper frame 4 floats up to position the seabed foundation;

Step (4): After the monitoring is completed, open the second trigger 8 to separate the upper frame 4 and the lower frame 5, connect the upper frame 4 with the cable 9 connected to the float 10, and recover the upper frame 4 and the monitoring equipment carried by it. To the deck, the lower frame 5 is left on the seabed.

As shown in Figure 4, the entire trigger structure works as follows. The counterweight system 1 and the seabed-based platform 2 are connected through the first trigger 3. At this time, the counterweight system 1 uses the first trigger 3 to connect the seabed-based platform 2 to the pair. When the whole device is lifted up, the iron bar 3-1 in the first trigger 3 will be buckled in the groove of the first platform 1-5 of the counterweight system 1 to realize the structural connection. When the entire device is to be placed in a designated position, due to the action of gravity, the first trigger 3 will rotate around the rotating rod 3-2 due to the action of gravity, so as to realize the automatic opening of the trigger structure. Finally, the trigger is fully opened, and the separation of the counterweight system 1 and the seabed-based platform 2 is realized.

In the description of the present invention, the term "plurality" refers to two or more than two, unless otherwise expressly defined, the orientation or positional relationship indicated by the terms "upper", "lower" etc. is based on the drawings. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; The terms "connected", "installed", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or through the middle media are indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the present invention at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. An automatic separation type seabed foundation suitable for weak and inclined seabed, comprising a counterweight system (1) and a seabed base platform (2), characterized in that the counterweight system (1) comprises a steel pipe ( 1-1), the top of the steel pipe (1-1) is installed with a lifting head (1-2), the lower part of the steel pipe (1-1) is fixedly installed with a limit ring (1-3), the handle (1-2) and the limit The steel pipe (1-1) between the rings (1-3) is covered with a counterweight plate (1-4), and the bottom end of the steel pipe (1-1) is fixed with a first bearing platform (1-5); The seabed-based platform (2) includes an upper frame (4) and a lower frame (5), the lower frame (5) is a cube structure, the upper half of the lower frame (5) is a hollow frame, and the lower frame (5) is a hollow frame. The sides and the top of the half part are sealed with steel plates. Eight stop plates (6) are set on the four corners and frame of the bottom of the lower frame (5), and the bottom of the stop plates (6) at the four corners of the bottom of the lower frame (5) are fixedly installed. Pore water pressure probe (7), the upper frame (4) is placed in the hollow frame in the upper half of the lower frame (5) and fixed by 4 sets of second triggers (8), and the center of the upper frame (4) is installed with a connection The rod (4-1), the top end of the connecting rod (4-1) is provided with a second bearing platform (4-2), the interior of the connecting rod (4-1) is hollow and is equipped with a cable (9), the cable (9) The other end of is connected to the floating ball (10); The first platform (1-5) and the second platform (4-2) are connected by a first trigger (3), the first trigger (3) is composed of two L-shaped triggers, and the first trigger (3) The iron bar (3-1) is installed on the upper part of the upper part, the iron bar (3-1) is buckled on the first bearing platform (1-5), and the middle part of the first trigger (3) runs through the rotating rod (3-2), and rotates The rod (3-2) is installed on the second platform (4-1), the shape of the first platform (1-5) is circular, and the symmetrical sides of the first platform (1-5) are respectively provided with The first trigger (3) has a groove (3-3) with a matching width, and the middle of the upper surface of the groove (3-3) is provided with an iron strip groove (3- 4), the first trigger (3) and the second trigger (8) have the same structure. 2. The self-separating seabed foundation suitable for weak and inclined seabeds according to claim 1, characterized in that two steel plates are oppositely welded on the sides of the upper frame (4) as a guide plate ( 11). 3 . The self-separating seabed foundation suitable for weak and inclined seabeds according to claim 1 , wherein the upper frame ( 4 ) is equipped with monitoring instruments. 4 . 4. The self-separating seabed foundation suitable for weak and inclined seabeds according to claim 1, characterized in that a GPS locator is installed inside the floating ball (10). 5. An automatic detachable seabed foundation suitable for weak and inclined seabed according to claim 1, characterized in that, the 4 groups of second triggers (8) are arranged on the upper frame (4) and the lower frame (5) on the top frame. 6. The detachable and assembled pore water pressure monitoring system according to claim 1, characterized in that, the size of the first bearing platform (1-5) is smaller than that of the second bearing platform (4-2) . 7 . The detachable and assembled pore water pressure monitoring system according to claim 1 , wherein the shape of the second support platform ( 4 - 2 ) is circular. 8 . 8. The detachable and assembled pore water pressure monitoring system according to claim 1, wherein the rotation angle of the first trigger (3) around the rotating rod (3-3) is 0° to 90°. 9. a kind of deployment method that is applicable to the automatic separation type seabed foundation of weak and inclined seabed as described in claim 1-8, is characterized in that, concrete steps are as follows: Step (1): the upper frame (4) is placed in the hollow frame of the upper half of the lower frame (5), the two are connected by the second trigger (8), and the inner frame of the upper frame (4) is equipped with monitoring equipment; Step (2): The counterweight system (1) is connected with the top of the connecting rod (4-1) of the upper frame (4) through the first trigger (3), and the counterweight system (1) is lifted by the winch. (1) Connect the upper frame (4) through the first trigger (3), and connect the upper frame (4) to the lower frame (5) through the second trigger (8). (5) Install the pore water pressure probe (7) at the bottom; Step (3): Lay the seabed foundation at the designated position through the winch, the first trigger (3) between the counterweight system (1) and the upper frame (4) is disengaged, and the counterweight system (1) is recovered to the deck, The floating ball (10) preset in the connecting rod (4-1) of the upper frame (4) floats up to position the seabed foundation; Step (4): After the monitoring is completed, open the second trigger (8) to separate the upper frame (4) and the lower frame (5), and connect to the upper frame (4) through the cable (9) connected to the float (10). ), the upper frame (4) and the monitoring equipment carried by it are recovered to the deck, and the lower frame (5) is left on the seabed.

Images