CN209894604U

CN209894604U - Beach shallow sea sediment intensity in-situ test system

Info

Publication number: CN209894604U
Application number: CN201920284508.7U
Authority: CN
Inventors: 刘晓磊; 宋玉鹏; 董立峰; 张红; 陈安铎; 贾永刚
Original assignee: Ocean University of China; First Institute of Oceanography MNR
Current assignee: Ocean University of China; First Institute of Oceanography MNR
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-01-03
Anticipated expiration: 2029-03-06

Abstract

The utility model discloses a beach shallow sea sediment intensity in-situ test system, which comprises an above-water deck unit and underwater penetration equipment, wherein the above-water deck unit comprises an operation ship and a deck monitoring platform, the deck monitoring platform is used for realizing the state monitoring and control of the underwater penetration equipment, is connected with a shipborne network signal, and receives a GPS signal and a multi-wave speed water depth signal; the underwater penetration equipment comprises a mounting frame, a penetration unit, a control cabin, a hydraulic unit and a data acquisition unit. This scheme utilization operation ship carries on test equipment, carries on the operation ship of specific structure with sounding equipment under water, and action and equipment state can realize remote monitoring and control under water, and adopts the stroke amplification mechanism design of pneumatic cylinder drive pulley combination during to probe rod lifting control, and the sounding depth can reach 20 meters, has effectively improved efficiency and the security of deposition intensity detection operation under the beachy and shoal sea environment, makes marine engineering geological evaluation survey cycle also very shorten.

Description

Beach shallow sea sediment intensity in-situ test system

Technical Field

The utility model belongs to marine geological exploration field, concretely relates to beach shallow sea deposit intensity normal position test system.

Background

The beach shallow sea mainly refers to shallow coastal beaches, intertidal zones and shallow sea zones within the water depth range of 20 meters, and the beach shallow sea area is not only an important position for Chinese petroleum exploration and development, but also a strategic operation area for national marine defense facility deployment, has important scientific research, economic and military values, and is particularly important for accurately and quickly acquiring the strength of a working area.

The existing sediment strength test is usually obtained by drilling to obtain a sample and performing indoor test, the working period is long, and the test precision is low. Static sounding technology is currently widely used on land and in the ocean as an effective means for obtaining sediment strength. However, the existing underwater static sounding equipment has large volume and weight, needs to be loaded by a large ship, is only suitable for deep sea submarine engineering geological exploration and is rarely applied to shoal and shallow sea areas.

If the invention patent with the publication number of (CN 101838981B) discloses an underwater geotechnical penetration equipment and an underwater geotechnical exploration method, the underwater geotechnical static penetration equipment which can carry out geotechnical engineering exploration in deep water with different scales and the underwater geotechnical exploration method adopting the equipment are provided, the problem of poor transportability of the penetration equipment during the submarine strength in-situ test is solved to a certain extent, but instruments involved in the method have large volume and heavy weight, and need to be loaded by a large ship and are only suitable for submarine engineering geological exploration in deep sea; in addition, the invention patent with the publication number of CN103144751B discloses a beach shallow sea sediment strength in-situ test system and a method, which can realize the in-situ test of the beach shallow sea sediment strength, but when the system works specifically, a ship is utilized to drag in-situ test equipment in water, the test equipment is independent of the ship and works directly on the water surface by means of a buoyancy generating and eliminating device, and a worker is required to control the probe rod to operate on the upper part of the device, so that the safety is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a beach shallow sea deposit thing intensity normal position test system to realize at the regional high-efficient, accurate, safe work of beach shallow sea, thereby obtain the intensity of the regional deposit thing of beach shallow sea, the quantity of drilling in the ocean engineering investigation that significantly reduces improves the quality and the precision of engineering investigation, and economic benefits is obvious, makes ocean engineering geological evaluation survey cycle also very shorten.

The utility model discloses an adopt following technical scheme to realize: an in-situ test system for strength of sediments in shoal and shallow sea comprises an overwater deck unit and underwater penetration equipment, wherein the underwater penetration equipment is communicated with the overwater deck unit through a coaxial cable;

the overwater deck unit comprises an operation ship and a deck monitoring platform arranged on the operation ship, wherein the operation ship is used for freely navigating in a shoal and shallow sea area on one hand, and is used for carrying, laying, stabilizing and recovering underwater penetration equipment on the other hand, and the operation ship can be still on the sea surface after being anchored in the front and back directions; the deck monitoring platform is used for monitoring and controlling the state of the underwater penetration equipment, is connected with a shipborne network signal, receives a GPS signal and a multi-wave-speed water depth signal, and comprises a deck communication machine, a deck operation table and a deck multifunctional case, wherein the deck communication machine and the deck operation table are connected with the deck multifunctional case, the deck communication machine is used for realizing communication with the underwater penetration equipment, the deck multifunctional case realizes data storage and analysis, and the deck operation platform realizes control on the underwater penetration equipment; the underwater penetration test device is used for testing the strength of sediments and comprises a mounting frame, a penetration unit, a control cabin, a hydraulic unit and a data acquisition unit, the penetration unit, the hydraulic unit and the data acquisition unit are electrically connected with the control cabin, the hydraulic unit is used for providing power for the penetration unit, the data acquisition unit comprises a posture sensor and an altimeter for detecting the lowering posture of the underwater penetration equipment, a displacement sensor and a pressure sensor for detecting the penetration state of the probe rod, by collecting underwater pressure, probe rod displacement and attitude data of the underwater penetration equipment and transmitting the collected data to the deck monitoring platform, the deck monitoring platform sends an action signal after analysis and processing to the control cabin, the control cabin controls the probe rod to move up and down and switch power supply, so that real-time communication between the acquisition and control signals and the deck display control unit is realized.

Furthermore, the operation ship comprises a ship body, a moon pool and a hoisting device, wherein the moon pool is arranged on a front deck of the ship body, a cover plate is arranged on the moon pool and used for placing underwater penetration sounding equipment, the hoisting device is arranged above the moon pool, and the double-cable hoisting is arranged and provided with cable rope guiding.

Furthermore, the penetration unit comprises a probe rod and a probe rod lifting mechanism, the probe rod lifting mechanism is connected with the probe rod, and the probe rod is controlled by the control cabin to move up and down;

the feeler lever lifting mechanism comprises a pulley mechanism and a penetration oil cylinder, the pulley mechanism comprises a lifting frame, a pulley block and a transmission steel cable, the pulley block comprises a first fixed pulley fixedly arranged at the upper part of the lifting frame, a second fixed pulley arranged at the lower part of the lifting frame and two groups of movable pulleys arranged between the first fixed pulley and the second fixed pulley, sliding chutes are arranged at two sides of the lifting frame, the movable pulleys can move up and down along the sliding chutes, the first fixed pulley is connected with one group of movable pulleys through the first transmission steel cable, and the second fixed pulley is connected with the other group of movable pulleys through the second transmission steel cable;

the lifting frame is also provided with a slide rail and a guide plate which slides up and down along the slide rail, the guide plate is provided with an upper clamping cylinder, a lower clamping cylinder is arranged below the lifting frame, and the upper clamping cylinder and the lower clamping cylinder are used for clamping the probe rod; and one end of the first transmission steel cable is fixed, the other end of the first transmission steel cable is connected with the upper side of the guide plate, one end of the second transmission steel cable is fixed, and the other end of the second transmission steel cable is connected with the lower side of the guide plate.

Furthermore, the ship body is designed in a streamline structure and comprises a first underwater ship body and a second underwater ship body, the first underwater ship body and the second underwater ship body are arranged in bilateral symmetry along the length direction of the operation ship, the first underwater ship body and the second underwater ship body are connected through a reinforcing framework, the whole ship body is connected into a whole ship body structure through a reinforcing framework on the upper portions of two separated underwater ship bodies in a unique streamline design, the ship body structure has certain wind resistance, the ship body structure can normally operate under the first-level to third-level sea conditions, the operation ship can be dragged to a target point through a trailer under the tidal flat environment with the water depth smaller than 1m, the water depth is larger than 1m, and the platform can be directly driven to the target point to carry out sediment intensity in-situ detection.

Further, the length of the ship body is 20m, the width of the ship body is 6m, the size of the middle moon pool is 2.2m multiplied by 2m, the water discharge amount of the operation ship is 20 tons, the draught is 1m, and the requirement of in-situ detection of the shoal and shallow sea is met through special design.

Furthermore, the quantity of first fixed pulley, second fixed pulley and movable pulley is two sets of, and two sets of first fixed pulley and two sets of second fixed pulley equal level set up, and two sets of movable pulleys set up from top to bottom, adopts the stroke amplification mechanism of hydraulic drive pulley combination, has reduced the whole height of equipment, has improved the stability of equipment in the seabed, and the maximum penetration depth can reach 20 m.

Further, the whole appearance design of installation frame is hexagonal prism frame construction, is equipped with a plurality of through-holes on the lateral wall of installation frame, and the whole height of installation frame is not more than 1500mm, more is fit for the special engineering geological environment of beachy shallow sea to guarantee equipment overall stability.

Further, what the bottom of installation frame corresponds is provided with many stock, and the stock penetrates the deposit and fixes behind the equipment base to prevent that equipment from removing when the operation, for convenient transfer, still be provided with rings at the top of installation frame, be used for linking to each other with the hawser on the fixed planer-type winch.

Furthermore, the underwater penetration sounding equipment further comprises a control cabin and a power battery cabin electrically connected with the control cabin, wherein the power battery cabin is used for providing a power supply for the whole device.

Furthermore, still be provided with the lighting device that makes a video recording that is connected with the control cabin electricity on the installation frame, the lighting device that makes a video recording includes camera and lighting system, and camera and lighting system's angle is all adjustable.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model discloses combine the system design to deck unit on water and sounding equipment under water, utilize the operation ship to carry on test equipment, carry on static sounding equipment on the operation ship of specific structure, based on two hawsers hoist and mount frame, carry out equipment cloth and retrieve through hull center moon pool, and accomplish the connection and the dismantlement of part probe rod on the moon pool apron, action and equipment status can realize remote monitoring and control through deck unit on water under water, have effectively improved efficiency and the security of the long-range test operation of long-pending thing intensity under the beach shallow sea environment;

the stroke amplification mechanism with the combination of hydraulic cylinders and pulleys is adopted during the elevation control of the probe rod, the overall height of the equipment is reduced, the stability of the equipment on the seabed is improved, the penetration depth can reach 20 meters, the speed of sailing is greatly increased, the efficiency of the detection operation of the strength of the sediment in the beach shallow sea environment is greatly improved, the number of drilled holes in ocean engineering investigation can be reduced, the quality and the precision of the engineering investigation are improved, the economic benefit is obvious, the geological evaluation period of the ocean engineering is greatly shortened, and the bottleneck technical problems in engineering construction of resource exploitation platforms, oil and gas transmission pipelines, submarine cable laying, ports, coastal infrastructures and the like in the beach shallow sea area in China are effectively solved.

Drawings

Fig. 1 is a schematic structural diagram of an operation ship and underwater penetration sounding equipment according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of the underwater sounding device according to the embodiment of the present invention;

FIG. 3 is a front view of the underwater penetration device of FIG. 2 with the mounting frame removed;

FIG. 4 is a rear view of the underwater penetration device of FIG. 2 with the mounting frame removed;

fig. 5 is a schematic diagram of a probe rod lifting mechanism according to an embodiment of the present invention;

fig. 6 is a schematic block diagram of an in-situ test system according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the control principle of the control cabin.

Detailed Description

In order to clearly understand the above objects, features and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

An in-situ testing system for strength of sediments in shoal shallow sea comprises an overwater deck unit and an underwater penetration device, wherein the underwater penetration device is communicated with the overwater deck unit through a coaxial cable, the overwater deck unit comprises an operation ship and a deck monitoring platform arranged on the operation ship, the operation ship is used for freely sailing in a shoal shallow sea area on one hand, and is used for carrying, laying, stabilizing and recovering the underwater penetration device on the other hand, and the operation ship can be kept still on the sea surface after being anchored forwards and backwards; the deck monitoring platform is used for monitoring and controlling the state of underwater penetration equipment, is connected with shipborne network signals and receives GPS signals and multi-wave-speed water depth signals and comprises a deck communication machine, a deck operation table and a deck multifunctional machine case, wherein the deck communication machine and the deck operation table are connected with the deck multifunctional machine case, the deck communication machine is used for realizing communication with the underwater penetration equipment, the deck multifunctional machine case is used for realizing data storage and analysis, and the deck operation platform is used for realizing control over the underwater penetration equipment, wherein the deck communication machine, the deck operation table and the deck multifunctional machine case are mature equipment, ready-made products can be directly purchased or designed by self, and repeated description is omitted herein.

The underwater penetration test device is mainly used for testing the strength of sediments and comprises a mounting frame 200, a penetration unit, a control cabin 220, a hydraulic unit and a data acquisition unit, wherein the penetration unit, the hydraulic unit and the data acquisition unit are electrically connected with the control cabin, and the hydraulic unit is used for providing power for the penetration unit; the data acquisition unit comprises a posture sensor and an altimeter for detecting the downward falling posture of the underwater penetration equipment, and a displacement sensor and a pressure sensor for detecting the penetration state of the probe rod 202, underwater pressure, probe rod displacement and posture data of the underwater penetration equipment are acquired, the acquired data are transmitted to the deck monitoring platform, the deck monitoring platform sends an action signal after analysis and processing to the control cabin, the control cabin controls the upward and downward actions and power supply switching of the probe rod, and then real-time communication of acquisition and control signals and the deck display control unit is realized.

The control cabin comprises a pressure-resistant sealed cabin and a related control circuit, the control schematic diagram of the control cabin is shown in fig. 7, the control cabin is mainly used for controlling the up-down motion and power supply switching of the probe rod and realizing the real-time communication of acquisition and control signals and an operating ship deck display control unit, the underwater penetration sounding equipment further comprises a power battery cabin electrically connected with the control cabin, and the power battery cabin is used for providing a power supply for the whole device. The sealed cabin adopts a proper pressure-resistant structure and a proper sealing design according to different functional requirements of underwater pressure-resistant components, adopts a pressure compensation self-balancing design for the power battery cabin, and adopts a pressure-resistant shell type bearing structure for underwater electronic equipment; the control circuit takes a microprocessor as an information processing control center, is connected with a corresponding sensor and a control object through a cable and a watertight connector, completes execution of an action instruction of an upper computer, and completes acquisition, storage and uploading of underwater analog quantity, digital quantity and frequency signals.

In the embodiment, the hydraulic unit is mainly used for realizing penetration of the anchor rod and the probe rod, and comprises a deep water direct current motor and a hydraulic pump, the control cabin sends an instruction to control each electromagnetic valve to complete the operation of equipment, the system pressure measured by a pressure sensor of the hydraulic unit can be used for calculating the penetration force, a displacement sensor of a penetration oil cylinder and parameters measured by a probe rod displacement sensor can be used for detecting the downward insertion depth of the probe rod, and when the probe rod is inserted to a set depth or working pressure, a deck control platform of a working ship carries out analysis processing according to the currently detected parameters and sends a next operation instruction until all the operations are completed. It should be emphasized that, the working vessel in this embodiment is specially designed, the working vessel is a small-sized catamaran, and includes a hull 100, a moon pool 102, a cab 104, a hoisting device 103, and the like, as can be seen from fig. 1, the hull includes a first underwater hull 1001 and a second underwater hull 1002, the first underwater hull 1001 and the second underwater hull 1002 are symmetrically arranged along the length direction of the working vessel, and the first underwater hull 1001 and the second underwater hull 1002 are connected through a reinforcing framework, the moon pool 102 is located on a front deck of the hull and is mainly used for placing an underwater penetration device 105, the moon pool 102 is provided with a cover plate, and is opened when in use and closed when not in use, the hoisting device 103 is arranged above the moon pool 102, and a fixed gantry winch is used to hoist the two cables and is provided with cable guide, so that the device can be prevented from rotating and can be limited from translating when passing through the mouth of the moon pool, and the hoisting capacity is 2; the length of the ship body is 20m, the width of the ship body is 6m, the water displacement is 20 tons, the draft is 1m, the operation ship has the capability of being at a standstill on the water surface after being anchored front and back, the size of the middle moon pool is 2.2m multiplied by 2m, and a ship-mounted generator of the operation ship can provide 380V/50Hz, and the power consumption of a system is not less than 8 kw; the ship body engine adopts a gasoline or diesel engine, and the ship speed is designed to be 5 knots. The whole ship body adopts a unique streamline design, and the upper parts of two separated underwater ship bodies are connected into an integral ' ship ' double-body structure ' by a reinforcing framework, so that the ship body has certain wind resistance, can normally operate under the conditions of one level to three levels of sea, and can be dragged by a trailer to carry out sediment strength in-situ detection to a target point under the tidal flat environment with the water depth of less than 1 m.

As shown in fig. 2-4, the overall appearance of the mounting frame 200 is designed to be a hexagonal prism frame structure to improve the stability of the machine frame, the top of the mounting frame 200 is provided with a hanging ring 203 for connecting with a cable on a fixed gantry winch, the bottom of the mounting frame is correspondingly provided with 6 anchor rods (not shown), the anchor rods penetrate into the sediment after the bottom of the equipment seat to prevent the equipment from moving during operation, and the mounting frame is designed to have the following dimensions according to the detection depth requirement of the equipment and the structures of components such as a control cabin and a hydraulic unit: 1740mm (opposite angle) x 1450mm (opposite side), the total height is 1500mm, in addition, a camera shooting and lighting device which is electrically connected with the control cabin is arranged on the mounting frame, the camera shooting and lighting device comprises a camera 218 and a lighting system 219, and the angles of the camera and the lighting system are adjustable.

With continued reference to fig. 3 and 4, the penetration unit includes a probe 202 and a probe lifting mechanism, a probe 201 is disposed below the probe 202, and the probe lifting mechanism is connected to the probe 202 and is controlled by the control cabin to move the probe 202 up and down; the probe rod lifting mechanism comprises a pulley mechanism and a penetration oil cylinder 211, the pulley mechanism comprises a lifting frame 205, a pulley block and a transmission steel cable, and the probe rod is arranged on the lifting frame through a guide sleeve 204; the pulley block comprises a first fixed pulley 206 fixedly arranged at the upper part of the lifting frame 205, a second fixed pulley 207 arranged at the lower part of the lifting frame 205 and two groups of movable pulleys 208 arranged between the first fixed pulley 206 and the second fixed pulley 207, sliding grooves 209 are arranged at two sides of the lifting frame 205, the movable pulleys 208 can move up and down along the sliding grooves 209, the first fixed pulley 206 is connected with one group of movable pulleys through a first transmission steel cable 210, and the second fixed pulley 207 is connected with the other group of movable pulleys through a second transmission steel cable 212;

the lifting frame 205 is further provided with a slide rail 213 and a guide plate 214 which slides up and down along the slide rail 213, the guide plate 214 is provided with an upper clamping cylinder 215, a lower clamping cylinder 216 is arranged below the lifting frame 205, and the upper clamping cylinder 215 and the lower clamping cylinder 216 are used for clamping the probe rod 202; and one end of the first transmission cable is fixed and the other end is connected to the upper side of the guide plate 214, and one end of the second transmission cable is fixed and the other end is connected to the lower side of the guide plate 214.

The working principle of the penetration unit is shown in fig. 5, in this embodiment, the number of the first fixed pulleys 206, the second fixed pulleys 207 and the movable pulleys 208 is two, the two groups of the first fixed pulleys 206 and the two groups of the second fixed pulleys 207 are horizontally arranged, the two groups of the movable pulleys 208 are vertically arranged, when the probe rod penetrates, a piston rod of the penetration cylinder extends out, the guide plate is driven to move downwards through a transmission steel cable and the whole pulley block, a clamping manipulator fixed on the guide plate drives the probe rod to slowly insert into the sediment at a uniform speed, the insertion depth is measured by a displacement sensor, when the probe rod is lifted, the piston rod of the cylinder retracts, the guide plate moves upwards, the probe rod can be lifted out of the sediment, and the probe rod lifting mechanism adopts a stroke amplification mechanism formed by combining hydraulic cylinders and driving pulleys, so that the overall height of the device is reduced, and the.

Additionally, the utility model discloses in, other structural style also can be adopted in the shape design of operation ship and underwater sounding equipment, reach equally the utility model discloses the purpose to the condition of accomplishing deposit intensity normal position and detecting also belongs to the utility model discloses a protection scope.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. An in-situ test system for strength of sediments in shoal and shallow sea is characterized by comprising an overwater deck unit and an underwater penetration device (105), wherein the underwater penetration device is communicated with the overwater deck unit through a coaxial cable;

the overwater deck unit comprises an operation ship and a deck monitoring platform arranged on the operation ship, wherein the operation ship is used for freely sailing in a shoal and shallow sea area on one hand, and is used for carrying, laying, stabilizing and recovering underwater penetration equipment (105) on the other hand, and the operation ship can be stationary on the sea surface after being anchored forwards and backwards; the deck monitoring platform comprises a deck communication machine, a deck operation console and a deck multifunctional case, wherein the deck communication machine and the deck operation console are connected with the deck multifunctional case, the deck communication machine is used for realizing communication with the underwater penetration equipment, the deck multifunctional case is used for realizing data storage and analysis, and the deck operation platform is used for realizing control over the underwater penetration equipment;

the underwater penetration testing device (105) is used for achieving strength testing of sediments and comprises a mounting frame (200), a penetration unit, a control cabin (220), a hydraulic unit and a data acquisition unit, wherein the penetration unit, the hydraulic unit and the data acquisition unit are electrically connected with the control cabin, the hydraulic unit is used for providing power for the penetration unit, and the data acquisition unit comprises a posture sensor and a height gauge which are used for detecting the downward falling posture of the underwater penetration testing device and a displacement sensor and a pressure sensor which are used for detecting the penetration state of a probe rod (202).

2. The beach shallow sea sediment strength in-situ test system as claimed in claim 1, wherein the operating ship comprises a ship body (100), a moon pool (102) and a hoisting device (103), wherein the moon pool (102) is arranged on a front deck of the ship body, a cover plate is arranged on the moon pool (102) for placing underwater penetration equipment (105), the hoisting device (103) is arranged above the moon pool, and the double-cable hoisting is adopted and is provided with cable guide.

3. The beach shallow sea sediment intensity in-situ test system of claim 1 or 2, wherein the penetration unit comprises a probe rod (202) and a probe rod lifting mechanism, the probe rod lifting mechanism is connected with the probe rod (202), and the probe rod (202) is controlled by a control cabin to move up and down;

the feeler lever lifting mechanism comprises a pulley mechanism and a penetration oil cylinder (211), the pulley mechanism comprises a lifting frame (205), a pulley block and a transmission steel cable, the pulley block comprises a first fixed pulley (206) fixedly arranged at the upper part of the lifting frame (205), a second fixed pulley (207) arranged at the lower part of the lifting frame (205) and two groups of movable pulleys (208) arranged between the first fixed pulley (206) and the second fixed pulley (207), sliding grooves (209) are arranged at two sides of the lifting frame (205), the movable pulleys (208) can move up and down along the sliding grooves (209), the first fixed pulley (206) is connected with one group of movable pulleys through a first transmission steel cable (210), and the second fixed pulley (207) is connected with the other group of movable pulleys through a second transmission steel cable (212);

the lifting frame (205) is further provided with a sliding rail (213) and a guide plate (214) which can slide up and down along the sliding rail (213), an upper clamping cylinder (215) is arranged on the guide plate (214), a lower clamping cylinder (216) is arranged below the lifting frame (205), and the upper clamping cylinder (215) and the lower clamping cylinder (216) are used for clamping the probe rod (202); and one end of the first transmission steel cable is fixed, the other end of the first transmission steel cable is connected with the upper side of the guide plate, one end of the second transmission steel cable is fixed, and the other end of the second transmission steel cable is connected with the lower side of the guide plate.

4. The beach shallow sea sediment strength in-situ test system of claim 2, wherein: the ship body (100) is designed in a streamline structure and comprises a first underwater ship body (1001) and a second underwater ship body (1002), the first underwater ship body (1001) and the second underwater ship body (1002) are arranged in a bilateral symmetry mode along the length direction of the operation ship, and the first underwater ship body (1001) and the second underwater ship body (1002) are connected through a reinforcing framework.

5. The beach shallow sea sediment strength in-situ test system of claim 4, wherein: the length of the ship body (100) is 20m, the width of the ship body is 6m, the size of the middle moon pool (102) is 2.2m multiplied by 2m, the drainage quantity of the operation ship is 20 tons, and the draught is 1 m.

6. The beach shallow sea sediment strength in-situ test system of claim 3, wherein: the number of the first fixed pulleys (206), the second fixed pulleys (207) and the movable pulleys (208) is two, the two groups of the first fixed pulleys (206) and the two groups of the second fixed pulleys (207) are horizontally arranged, and the two groups of the movable pulleys (208) are vertically arranged.

7. The beach shallow sea sediment strength in-situ test system of claim 3, wherein: the whole appearance design of installation frame (200) is hexagonal prism frame structure, is equipped with a plurality of through-holes on the lateral wall of installation frame (200), and the whole height of installation frame (200) is not more than 1500 mm.

8. The beach shallow sea sediment strength in-situ test system of claim 7, wherein: the bottom of installation frame (200) corresponds is provided with many stock, in order to fix the installation frame after sinking to the seabed, and the top of installation frame (200) still is provided with rings (203).

9. The beach shallow sea sediment strength in-situ test system of claim 8, wherein: the underwater penetration sounding device (105) further comprises a power battery cabin (217) electrically connected with the control cabin and used for providing a power supply for the whole device.

10. The beach shallow sea sediment strength in-situ test system of claim 9, wherein: the installation frame (200) is further provided with a camera shooting illumination device electrically connected with the control cabin, the camera shooting illumination device comprises a camera (218) and an illumination system (219), and the angles of the camera (218) and the illumination system (219) are adjustable.