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Seabed sediment in-situ acoustic characteristic test system and method

A technology of seabed sediments and acoustic characteristics, applied in geophysical survey, seismology, surveying devices, etc., can solve the problem of reducing the measurement error, and achieve the effect of improving the precision and accuracy of the measurement

Pending Publication Date: 2020-08-28
THE FIRST INST OF OCEANOGRAPHY SOA +2
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Problems solved by technology

[0003] However, the current in-situ measurement technology for the acoustic properties of seabed sediments does not consider that the sediment is affected by the disturbance of the test system, and there are still problems in the measurement error caused by the disturbance, which leads to the measurement accuracy and accuracy.

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  • Seabed sediment in-situ acoustic characteristic test system and method
  • Seabed sediment in-situ acoustic characteristic test system and method
  • Seabed sediment in-situ acoustic characteristic test system and method

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Embodiment

[0076] Such as figure 2 as shown, figure 2 (a) is a schematic diagram of the retracted state of the platform sitting on the bottom, figure 2 (b) is a schematic diagram of the platform sitting on the bottom, figure 2 (c) is a schematic diagram of transducer penetration. Such as Figure 1-Figure 4 As shown, a kind of seabed sediment in-situ acoustic characteristic test system provided by the present invention comprises: heave compensation platform 2, bottom platform 3, cable retractable device, transducer detection device, image monitoring device (deep water camera 2 -13) and controls.

[0077] The heave compensation platform is connected to the mother ship through the first deep-water cable (deep-water optical cable 1); the heave compensation platform is used to compensate the disturbance caused by the heave of the first deep-water cable and the mother ship to the seabed sediments; the fixed end of the cable retracting device Set on the heave compensation platform, the...

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Abstract

The invention discloses a seabed sediment in-situ acoustic characteristic test system and method. The system comprises a heave compensation platform, a bottom platform, a cable take-up and pay-off device and a transducer detection device, the heave compensation platform is connected with a mother ship through a first deepwater cable; and the fixed end of the cable take-up and pay-off device is arranged on the heave compensation platform, the wire outlet end of the cable take-up and pay-off device is connected with the traction end of the bottom platform, and the cable take-up and pay-off device drives the bottom platform to ascend and descend by taking up and paying off a second deepwater cable. According to the system and the method, the heave disturbance of the first deepwater cable andthe mother ship is compensated by the heave compensation platform, and the bottom platform is not disturbed by the heave of the first deepwater cable and the mother ship, so that the sediment is not disturbed by the test system, the disturbance-free in-situ measurement of the acoustic characteristics of the sediment is realized, and the measurement precision and accuracy are improved.

Description

technical field [0001] The invention relates to the technical field of testing the in-situ acoustic characteristics of seabed sediments, in particular to a system and method for testing the in-situ acoustic characteristics of seabed sediments. Background technique [0002] The in-situ measurement technology of acoustic properties of seabed sediments refers to the technology of placing instruments on the seabed to directly measure the acoustic properties of sediments. The acoustic characteristics of seabed sediments include the shear wave and compression wave characteristics of seabed sediments. Acoustic in-situ measurement of seabed sediments can obtain the acoustic characteristic parameters in the true state of the seabed in situ, and can effectively avoid the measurement error caused by the disturbance of the sediment caused by sampling and handling. Compared with the laboratory acoustic characteristic measurement of sediment samples , with higher precision and accuracy. ...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/22G01N29/14G01V1/38
CPCG01N29/04G01N29/14G01N29/22G01V1/3852
Inventor 孟祥梅王景强李官保阚光明刘保华鲁德泉董武文
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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