CN112683339A - Submarine physical environment measuring device, measuring system and measuring method - Google Patents
Submarine physical environment measuring device, measuring system and measuring method Download PDFInfo
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Abstract
本发明涉及一种海底物理环境测量装置、测量系统与测量方法。该测量装置包括：第一信息采集探杆、沉积物贯入探头、摩擦阻力传感器、声信号激发器、水听器、压力传感器和第二信息采集探杆；沉积物贯入探头固定于第一信息采集探杆的第一端；沉积物贯入探头上固定摩擦阻力传感器；声信号激发器固定在第一信息采集探杆的侧边，位于第二端位置；水听器固定于第一信息采集探杆的侧壁上，且位置与声信号激发器对应，水听器用于接收声信号激发器的声信号；压力传感器固定于第一信息采集探杆的侧壁上；第二信息采集探杆固定于第一信息采集探杆的侧边，第二信息采集探杆内置热敏电阻和发热线圈。本发明可以提高海底测量效率，降低测量成本。
The invention relates to a submarine physical environment measurement device, a measurement system and a measurement method. The measuring device includes: a first information acquisition probe, a sediment penetration probe, a frictional resistance sensor, an acoustic signal exciter, a hydrophone, a pressure sensor and a second information acquisition probe; the sediment penetration probe is fixed on the first probe the first end of the probe rod for information acquisition; the friction resistance sensor is fixed on the sediment penetration probe; the acoustic signal exciter is fixed on the side of the probe rod for the first information acquisition and is located at the position of the second end; the hydrophone is fixed on the first information On the side wall of the acquisition probe rod, and the position corresponds to the acoustic signal exciter, the hydrophone is used to receive the acoustic signal of the acoustic signal exciter; the pressure sensor is fixed on the side wall of the first information acquisition probe rod; the second information acquisition probe The rod is fixed on the side of the first information acquisition probe rod, and the second information acquisition probe rod has a built-in thermistor and a heating coil. The invention can improve the seabed measurement efficiency and reduce the measurement cost.
Description
Technical Field
The invention relates to the technical field of submarine detection, in particular to a submarine physical environment measuring device, a submarine physical environment measuring system and a submarine physical environment measuring method.
Background
In recent decades, with the continuous acceleration of the development pace of marine resources and the increasing increase of the strategic position of oceans, the research and development of marine detection technologies and equipment are widely concerned by the scientific community, the industrial community and the defense field. The seabed boundary layer is used as a typical region for interaction of two media of a water body at the bottom of the ocean and a seabed, the upper range and the lower range of the seabed interface contain rich and special characteristic information, wherein the acoustic, mechanical and thermal characteristics of the seabed boundary layer are important factors influencing the space structure of an ocean sound field and the environment of seabed engineering, and the seabed boundary layer has important application value in the fields of seabed scientific research, ocean engineering investigation, underwater sound field environment, ocean equipment performance verification and the like.
At present, mainstream equipment for in-situ measurement of seabed characteristics can only obtain single physical field parameters generally, and when multiple physical fields such as seabed in-situ sound, force and heat of the same site are required to be measured, different devices are required to be lowered for multiple times, so that the time and the labor are consumed, the measurement efficiency is low, and the economic cost and the labor cost are high.
Disclosure of Invention
The invention aims to provide a measuring device, a measuring system and a measuring method for a submarine physical environment, so that the efficiency of measuring the parameter is improved, and the economic cost and the labor cost are saved.
In order to achieve the purpose, the invention provides the following scheme:
a subsea physical environment measuring device, comprising: the device comprises a first information acquisition probe rod, a sediment penetration probe, a frictional resistance sensor, an acoustic signal exciter, a hydrophone, a pressure sensor and a second information acquisition probe rod;
the sediment penetration probe is fixed at the first end of the first information acquisition probe rod, and the first information acquisition probe rod penetrates into the submarine sediment by using the sediment penetration probe; the frictional resistance sensor is fixed on the sediment penetration probe; the acoustic signal exciter is fixed on the side edge of the first information acquisition probe rod and is positioned at the second end of the first information acquisition probe rod; the hydrophone is fixed on the side wall of the first information acquisition probe rod, corresponds to the acoustic signal exciter in position and is used for receiving the acoustic signal of the acoustic signal exciter; the pressure sensor is fixed on the side wall of the first information acquisition probe rod; the second information acquisition probe rod is fixed on the side edge of the first information acquisition probe rod, and a thermistor and a heating coil are arranged in the second information acquisition probe rod;
the seabed physical environment measuring device measures the penetration resistance parameter of the sediment through the friction resistance sensor, measures the acoustic parameter of the sediment through the hydrophone, measures the pore pressure parameter of the sediment through the pressure sensor, and measures the thermal parameter of the sediment through the second information acquisition probe rod.
Optionally, the acoustic parameters of the deposit include acoustic velocity and acoustic attenuation coefficient; the thermal parameters of the deposit include a deposit heat flow value and a thermal conductivity.
Optionally, the number of the hydrophones is multiple, and the multiple hydrophones are fixed on the side wall of the first information acquisition probe rod along the length direction of the first information acquisition probe rod to form a hydrophone array.
Optionally, the number of the pressure sensors is multiple, the pressure sensors are fixed on the side wall of the first information acquisition probe rod along the length direction of the first information acquisition probe rod to form a pressure sensor array, and the pressure sensor array is used for measuring pore pressure parameters of sediments at different depths.
Optionally, the method further includes: the sealed electronic bin is internally provided with a seabed measurement and control unit and a power supply unit, the seabed measurement and control unit receives a measurement signal of the frictional resistance sensor, and is used for outputting an acoustic signal excitation instruction and a heating instruction according to the measurement signal of the frictional resistance sensor, sending the acoustic signal excitation instruction to the acoustic signal exciter and sending the heating instruction to the second information acquisition probe rod; the power supply unit supplies power to the frictional resistance sensor, the acoustic signal exciter, the hydrophone, the pressure sensor and the second information acquisition probe rod.
Optionally, the method further includes: hoisting a steel wall and a counterweight; the second end of the first information acquisition probe rod is fixed at the bottom end of the hoisting steel wall, and a hanging ring is arranged at the top of the hoisting steel wall; the counterweight is fixed at the bottom end of the hoisting steel wall.
Optionally, the acoustic signal exciter comprises a stainless steel pipe and an acoustic transducer, a first end of the stainless steel pipe is fixed to the side edge of the hoisting steel wall through a connecting plate, and a second end of the stainless steel pipe is fixed to the acoustic transducer.
Optionally, the weight of the counterweight is adjustable.
The present invention also provides a seafloor surveying system comprising: the device comprises a water surface control ship, an armored cable and the submarine physical environment measuring device; the water surface control ship comprises an automatic winch, a shipborne crane and a deck control unit; the shipborne crane is used for hoisting the seabed physical environment measuring device, and the automatic winch is used for lowering and hoisting the seabed physical environment measuring device; the deck control unit is connected with the communication end of the submarine physical environment measuring device through the armored cable, and the measuring data of the submarine physical environment measuring device is transmitted to the deck control unit through the armored cable.
The present invention also provides a seafloor surveying method, which is applied to the seafloor surveying system, and includes:
the water surface control ship hovers over the measuring station;
the shipborne crane lifts the seabed physical environment measuring device and lowers the seabed physical environment measuring device through an automatic winch;
after the submarine physical environment measuring device touches the bottom, under the action of the gravity of a counterweight, a first information acquisition probe rod, a second information acquisition probe rod and the acoustic signal exciter of the submarine physical environment measuring device sequentially penetrate into a sediment; in the process of injection, a frictional resistance sensor fixed on the sediment injection probe measures the sediment injection resistance;
when the penetration process is stopped and the penetration resistance is reduced to zero, the acoustic signal exciter emits an acoustic signal which is transmitted by the sediment and then received by the hydrophone; meanwhile, the heating coil of the second information acquisition probe rod starts to heat, and the thermistor finishes measurement of thermal parameters; the pressure sensor completes pore pressure measurement; in the whole measuring process, data collected by the submarine physical environment measuring device is transmitted to the deck control unit through the armored cable communication function.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention can realize the integrated measurement and acquisition of the seabed in-situ multi-physical field parameters, has simple and convenient operation, improves the efficiency of seabed multi-parameter measurement and saves a large amount of economic cost and labor cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a device for measuring the physical environment of the sea bottom according to the present invention;
FIG. 2 is a schematic structural diagram of the seafloor surveying system of the present invention;
fig. 3 is a schematic diagram of the seafloor surveying system of the present invention as it performs the surveying.
Reference numbers in the figures: 1-controlling the ship on the water surface; 2-an armored cable; 3-a subsea physical environment measuring device; 4-hoisting the steel wall; 5, sealing the electronic cabin; 6-an acoustic signal exciter; 7-a counterweight; 8-a first information acquisition probe rod; 9-a second information acquisition probe rod; 10-strong support; 11-stainless steel tube; 12-an acoustic transducer; 13-sediment penetration probe; 14-a frictional resistance sensor; 15-a hydrophone; 16-a pressure sensor; 17-a heat generating coil; 18-thermistor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural view of an undersea physical environment measuring apparatus according to the present invention, as shown in fig. 1, the undersea physical environment measuring apparatus according to the present invention includes: a first information acquisition probe 8, a sediment penetration probe 13, a frictional resistance sensor 14, an acoustic signal exciter 6, a hydrophone 15, a pressure sensor 16 and a second information acquisition probe 9.
The first information acquisition probe 8 is a main body part penetrating into the sediment and mainly made of high-strength stainless steel, the total length of the first information acquisition probe 8 is designed to be 2m, the inner diameter of the first information acquisition probe is 0.08m, and other length and inner diameter parameters can be designed according to the actual measurement environment. The first end of the first information acquisition probe 8 is a sharp sediment penetration probe 13, and the first information acquisition probe 8 penetrates into the seabed sediment through the sediment penetration probe 13. The top surface of the sediment penetration probe 13 is fixed with a frictional resistance sensor 14 for measuring the penetration resistance of sediment.
The acoustic signal exciter 6 is fixed to a side edge of the first information acquisition probe 8 and located at a second end position, i.e., a top end position, of the first information acquisition probe 8. The side wall of the first information acquisition probe 8 is embedded in a fixed hydrophone 15, the position of the hydrophone 15 corresponds to the position of the acoustic signal exciter 6, and the hydrophone 15 is used for receiving the acoustic signal of the acoustic signal exciter 6. The number of the hydrophones 15 is multiple, the multiple hydrophones 15 are fixed along the length direction of the first information acquisition probe rod 8 to form a hydrophone array, and specifically, the number of the hydrophones 15 can be 7, and the distance between the hydrophones 15 is 0.2 m. Furthermore, acoustic parameters that can be detected by the hydrophone array include the speed of sound and the acoustic attenuation coefficient.
The side wall of the first information acquisition probe rod 8 is also embedded with a plurality of fixed pressure sensors 16, the number of the pressure sensors 16 is also multiple, the pressure sensors 16 are fixed along the length direction of the first information acquisition probe rod 8 to form a pressure sensor array, and the pressure sensor array can measure the pore pressure parameters of sediments at different depths, so that the in-situ mechanical characteristic parameters of the sediments can be measured. For example, the pressure sensor array of the present invention includes 6 pressure sensors with a pitch of 0.2 m.
The second information collecting probe 9 is fixed to a side of the first information collecting probe 8, and as shown in fig. 1, the second information collecting probe 9 is fixed to the first information collecting probe 8 through a strong support 10. The length of the second information acquisition probe rod 9 is 1.8m, the inner diameter is 0.01m, and the distance between the second information acquisition probe rod and the first information acquisition probe rod 8 is 0.05 m. The second information acquisition probe rod 9 is internally provided with a thermistor 18 and a heating coil 17; the second information acquisition probe rod 9 mainly realizes the measurement of the heat flow value and the heat conductivity of the submarine sediments, and the measurement principle refers to the structure of a Lister type heat flow probe.
The submarine physical environment measuring device of the invention transmits acoustic signals through the acoustic signal exciter 6, and the acoustic signals are transmitted through sediments and received by the hydrophone array 15 on the first information acquisition probe rod 8, so that the measurement of the sound velocity and the sound attenuation coefficient of the sediments is realized; the frictional resistance sensor 14 on the sediment penetration probe 13 of the first information acquisition probe 8 realizes the measurement of the penetration resistance; the pressure sensor array 16 on the side wall of the first information acquisition probe 8 can realize measurement of pore pressures of sediments at different depths; the second information acquisition probe rod 9 generates heat through the heating coil 17 and transmits the heat to the sediment, and the internal thermistor 18 can measure the heat flow value and the heat conductivity of the sediment by measuring the temperature change in the heating process of the heating coil 17.
The present invention also provides a device for measuring a physical environment on the seabed, comprising: and the sealed electronic bin 5 is a high-pressure-resistant steel shell, has a cylindrical appearance structure, has an inner diameter of 0.4m, and is subjected to sealing treatment. The sealed electronic bin 5 is internally provided with a seabed measurement and control unit and a power supply unit and is used for measuring, controlling and supplying power to the underwater measuring device. Specifically, the seabed measurement and control unit receives the measurement signal of the frictional resistance sensor 14, and is configured to output an acoustic signal excitation instruction and a heating instruction according to the measurement signal of the frictional resistance sensor 14, send the acoustic signal excitation instruction to the acoustic signal exciter 6, and send the heating instruction to the second information acquisition probe rod 9; the power supply unit supplies power to the frictional resistance sensor 14, the acoustic signal exciter 6, the hydrophone 15, the pressure sensor 16 and the second information acquisition probe 9.
In addition, in a specific application, the device for measuring the physical environment of the sea bottom of the present invention further includes: hoisting the steel wall 4 and the counterweight 7; the hoisting steel wall 4 is cylindrical and made of high-strength 314 stainless steel, and the top of the hoisting steel wall is provided with a hanging ring which is hung with a subsequent hanging device. The second end (bottom end) of the first information acquisition probe rod 8 is fixed at the bottom end of the hoisting steel wall 4. The counterweight 7 is fixedly arranged at the bottom end of the hoisting steel wall 4, the counterweight 7 is a series of circular steel plates, and the inside of the counterweight is a hollow concentric circle. Each counterweight steel plate has the diameter of 0.5m, the thickness of 0.02m and the weight of about 100kg, and different numbers of circular steel plates can be combined according to different measuring environments, so that the submarine sediments can be smoothly penetrated.
The acoustic signal exciter 6 comprises a stainless steel pipe 11 and an acoustic transducer 12, wherein a first end of the stainless steel pipe 11 is fixed on the side wall of the hanging steel wall 4 through a connecting plate, and a second end of the stainless steel pipe 11 is fixed with the acoustic transducer 12. The total length of the acoustic signal exciter 6 is 0.5 m; the bottom acoustic transducer 12 can be set to 0.1m completely penetrating deep into the shallow surface sediments along with the whole device; the method mainly realizes the excitation of acoustic signals for measuring the acoustic characteristics of the sediment.
The seabed physical environment measuring device is of a multi-probe combined structure, is in a read-only working mode, has high pressure resistance, and has the maximum use water depth of 6000m underwater.
Based on the above mentioned device for measuring the physical environment of the sea bottom, in a specific application, the present invention provides a system for measuring the sea bottom, as shown in fig. 2, the system for measuring the sea bottom of the present invention comprises a surface control vessel 1, an armored cable 2 and a device for measuring the physical environment of the sea bottom 3 shown in fig. 1. The water surface control ship 1 comprises an automatic winch, a shipborne crane and a deck control unit, wherein the automatic winch, the shipborne crane and the deck control unit are all arranged above a ship body, and the automatic winch and the shipborne crane are arranged at the tail part of the ship body. The shipborne crane is used for hoisting the seabed physical environment measuring device 3, and the automatic winch is used for lowering and hoisting the seabed physical environment measuring device; the deck control unit is connected with the communication end of the submarine physical environment measuring device through the armored cable, and the measuring data of the submarine physical environment measuring device is transmitted to the deck control unit through the armored cable.
The armored cable 2 is composed of a conductor, an insulating wire core, an armored layer and an armored reinforcing layer, is 6000m long, has a communication function, can bear strong mechanical strength, one end of the armored cable is connected with the deck control unit, the other end of the armored cable is provided with a hook for hooking the seabed physical environment measuring device 3, and the automatic winch and the shipborne crane can realize the lowering and lifting of the seabed physical environment measuring device.
Specifically, the schematic diagram of the measurement by the subsea measurement system is shown in fig. 3, and the measurement process includes lowering the subsea physical environment measurement device, penetrating sediment, and measuring. The left part in fig. 3 is a schematic view of lowering the device for measuring the physical environment of the seabed, and the right part in fig. 3 is a schematic view of sediment penetration and measurement. The water surface control ship 1 arrives at a measuring sea area, power positioning is started, the ship is suspended at a measuring station 21, the ship-borne crane lifts the seabed physical environment measuring device 3 through the connecting lifting steel wall 4, and the seabed physical environment measuring device is lowered through the automatic winch.
After the physical environment measuring device 3 of the seabed touches the bottom, under the action of the gravity of the counterweight 7, the first information acquisition probe rod 8, the second information acquisition probe rod 9 and the acoustic signal excitation unit 6 of the physical environment measuring device of the seabed sequentially realize the sediment penetration 3, and in the penetration process, a frictional resistance sensor 14 at the top of a sediment penetration probe 13 measures the sediment penetration resistance; when the penetration process is stopped and the penetration resistance is reduced to zero, the seabed measurement and control unit in the sealed electronic bin 5 automatically receives a penetration stop signal, an instruction excited by an acoustic signal is sent to the acoustic signal exciter 6, the acoustic transducer 12 emits an acoustic signal, and the acoustic signal is transmitted by sediment and then received by the hydrophone array 15; meanwhile, the measurement and control unit sends a heating instruction to the second information acquisition probe rod 9, the heating coil 17 starts to heat, and the thermistor 18 finishes the measurement of thermal parameters; the pressure transducer array 16 performs pore pressure measurements. In the whole measuring process, all the collected data are transmitted to the deck control unit through the armored cable 2 communication function. After the measurement is finished, the automatic winch is recovered, the seabed physical environment measuring device 3 returns to the water surface, and the seabed physical environment measuring device 3 is lifted to the water surface control ship 1 through the shipborne crane.
The invention solves the problem that the traditional submarine in-situ measuring device can not realize the submarine in-situ multi-physical-field multi-parameter integrated acquisition, and provides an efficient method and technical equipment for submarine boundary layer environmental information detection.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A subsea physical environment measuring device, comprising: the device comprises a first information acquisition probe rod, a sediment penetration probe, a frictional resistance sensor, an acoustic signal exciter, a hydrophone, a pressure sensor and a second information acquisition probe rod;
the sediment penetration probe is fixed at the first end of the first information acquisition probe rod, and the first information acquisition probe rod penetrates into the submarine sediment by using the sediment penetration probe; the frictional resistance sensor is fixed on the sediment penetration probe; the acoustic signal exciter is fixed on the side edge of the first information acquisition probe rod and is positioned at the second end of the first information acquisition probe rod; the hydrophone is fixed on the side wall of the first information acquisition probe rod, corresponds to the acoustic signal exciter in position and is used for receiving the acoustic signal of the acoustic signal exciter; the pressure sensor is fixed on the side wall of the first information acquisition probe rod; the second information acquisition probe rod is fixed on the side edge of the first information acquisition probe rod, and a thermistor and a heating coil are arranged in the second information acquisition probe rod;
the seabed physical environment measuring device measures the penetration resistance parameter of the sediment through the friction resistance sensor, measures the acoustic parameter of the sediment through the hydrophone, measures the pore pressure parameter of the sediment through the pressure sensor, and measures the thermal parameter of the sediment through the second information acquisition probe rod.
2. The subsea physical environment measurement device of claim 1, wherein the sediment acoustic parameters comprise sound velocity and sound attenuation coefficient; the thermal parameters of the deposit include a deposit heat flow value and a thermal conductivity.
3. The undersea physical environment measurement device according to claim 1, wherein the number of the hydrophones is plural, and the plural hydrophones are fixed on a side wall of the first information acquisition probe along a length direction of the first information acquisition probe to form a hydrophone array.
4. The undersea physical environment measurement device according to claim 1, wherein the number of the pressure sensors is plural, and the plural pressure sensors are fixed on a side wall of the first information acquisition probe along a length direction of the first information acquisition probe to form a pressure sensor array, and the pressure sensor array is used for measuring pore pressure parameters of sediments at different depths.
5. The subsea physical environment measuring device of claim 1, further comprising: the sealed electronic bin is internally provided with a seabed measurement and control unit and a power supply unit, the seabed measurement and control unit receives a measurement signal of the frictional resistance sensor, and is used for outputting an acoustic signal excitation instruction and a heating instruction according to the measurement signal of the frictional resistance sensor, sending the acoustic signal excitation instruction to the acoustic signal exciter and sending the heating instruction to the second information acquisition probe rod; the power supply unit supplies power to the frictional resistance sensor, the acoustic signal exciter, the hydrophone, the pressure sensor and the second information acquisition probe rod.
6. The subsea physical environment measuring device of claim 1, further comprising: hoisting a steel wall and a counterweight; the second end of the first information acquisition probe rod is fixed at the bottom end of the hoisting steel wall, and a hanging ring is arranged at the top of the hoisting steel wall; the counterweight is fixed at the bottom end of the hoisting steel wall.
7. The subsea physical environment measuring device of claim 6, wherein the acoustic signal exciter comprises a stainless steel tube and an acoustic transducer, wherein a first end of the stainless steel tube is fixed to a side of the suspended steel wall by a connecting plate, and a second end of the stainless steel tube is fixed to the acoustic transducer.
8. The subsea physical environment measuring device of claim 6, wherein the weight of the counterweight is adjustable.
9. A seafloor surveying system, comprising: a surface control vessel, an armored electrical cable, and the subsea physical environment measuring device of any of claims 1-8; the water surface control ship comprises an automatic winch, a shipborne crane and a deck control unit; the shipborne crane is used for hoisting the seabed physical environment measuring device, and the automatic winch is used for lowering and hoisting the seabed physical environment measuring device; the deck control unit is connected with the communication end of the submarine physical environment measuring device through the armored cable, and the measuring data of the submarine physical environment measuring device is transmitted to the deck control unit through the armored cable.
10. A seafloor surveying method applied to the seafloor surveying system of claim 9, the seafloor surveying method comprising:
the water surface control ship hovers over the measuring station;
the shipborne crane lifts the seabed physical environment measuring device and lowers the seabed physical environment measuring device through an automatic winch;
after the submarine physical environment measuring device touches the bottom, under the action of the gravity of a counterweight, a first information acquisition probe rod, a second information acquisition probe rod and the acoustic signal exciter of the submarine physical environment measuring device sequentially penetrate into a sediment; in the process of injection, a frictional resistance sensor fixed on the sediment injection probe measures the sediment injection resistance;
when the penetration process is stopped and the penetration resistance is reduced to zero, the acoustic signal exciter emits an acoustic signal which is transmitted by the sediment and then received by the hydrophone; meanwhile, the heating coil of the second information acquisition probe rod starts to heat, and the thermistor finishes measurement of thermal parameters; the pressure sensor completes pore pressure measurement; in the whole measuring process, data collected by the submarine physical environment measuring device is transmitted to the deck control unit through the armored cable communication function.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113247219A (en) * | 2021-06-23 | 2021-08-13 | 自然资源部第一海洋研究所 | Deep sea environment detection platform |
| CN113969573A (en) * | 2021-10-18 | 2022-01-25 | 中国海洋大学 | Gravity type penetration device and method for submarine sediment pore pressure observation probe rod |
| CN117129571A (en) * | 2023-10-24 | 2023-11-28 | 自然资源部第二海洋研究所 | In-situ measuring device and method for mechanical and acoustic characteristics of submarine sediment |
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| CN113969573B (en) * | 2021-10-18 | 2022-06-21 | 中国海洋大学 | A kind of gravity penetration device and method of probe rod for observing pore pressure of seabed sediments |
| CN117129571A (en) * | 2023-10-24 | 2023-11-28 | 自然资源部第二海洋研究所 | In-situ measuring device and method for mechanical and acoustic characteristics of submarine sediment |
| CN117129571B (en) * | 2023-10-24 | 2024-02-13 | 自然资源部第二海洋研究所 | A device and method for in-situ measurement of mechanical and acoustic properties of seabed sediments |
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