A gravity penetrating device and method of a seabed sediment pore pressure observation probe rod

A seabed sediment and pore pressure technology, applied in measuring devices, measuring fluid pressure, soil material testing, etc., can solve problems such as polluting the marine ecological environment, disturbing seabed sediments, and affecting observation results, achieving high safety in field work , Reduce equipment deployment costs, and facilitate integration and deployment

Active Publication Date: 2022-06-21
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this penetration method requires the development of a special static penetration device to complete the penetration. This type of static penetration device often weighs more than one ton, is bulky, and expensive. Generally, small operating vessels cannot meet the requirements of offshore operations. , low work efficiency
The huge volume and weight cause great disturbance to the seabed sediments, seriously affecting the actual observation results
In addition, hydraulic oil is prone to leakage in the deep sea environment, polluting the marine ecological environment

Method used

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  • A gravity penetrating device and method of a seabed sediment pore pressure observation probe rod
  • A gravity penetrating device and method of a seabed sediment pore pressure observation probe rod
  • A gravity penetrating device and method of a seabed sediment pore pressure observation probe rod

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Experimental program
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Effect test

Embodiment 1

[0076] A gravity penetration device of a probe rod for observation of pore pressure of seabed sediments, comprising a control cabin 1 and an observation rod,

[0077] In the control cabin 1, a sealed pressure chamber 16 and an open assembly chamber 14 for connecting the observation probe are formed through the baffle. An underwater acoustic transducer 6, a pressure sensor 5 and an attitude sensor are respectively installed on the ring 4 in the circumferential direction, and a mechanical lock 13 is installed on the baffle plate in the assembly cabin 14, which is driven by the first drive mechanism to rotate and realize opening and closing. A first acquisition control system and a first battery pack for power supply are installed in the cabin 16, and the first acquisition control system is respectively electrically connected with the underwater acoustic transducer 6, the pressure sensor 5, the attitude sensor and the first drive mechanism. In the invention, the first driving mec...

Embodiment 2

[0094] A method for using a gravity penetration device of a probe rod for observing pore pressure of seabed sediments, comprising the following steps:

[0095] A. Assembly:

[0096] A1. The whole observation probe rod is hoisted through the hanger 32, the probe rod body 19 is placed on the support plate 28, and the observation probe rod stop plate 18 is close to the probe rod limit plate 26;

[0097] A2. Place the control cabin 1 with the counterweight 15 installed in the support frame 25 on the sliding seat 24;

[0098] A3. Plug and install the data acquisition cabin 21 of the observation probe rod and the assembly cabin 14 at one end of the control cabin 1, and drive the mechanical lock 13 to lock through the electric push rod 11, so that the mechanical lock 13 and the second lifting ring of the data collection cabin 21 are locked. 17 Connect, connect the hook of the cable 33 with the first lifting ring 4 on the control cabin 1;

[0099] B. Deploy:

[0100] B1. Keep the a...

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Abstract

The invention relates to a gravity penetrating device and method for a seabed sediment pore pressure observation probe rod, which includes a control cabin and an observation probe rod. A pressure-resistant cabin and an assembly cabin are formed in the control cabin. The pressure-resistant cabin fixes the first suspension ring, and The underwater acoustic transducer, pressure sensor and attitude sensor are respectively installed, the mechanical lock driven by the first driving mechanism is installed in the assembly cabin, the first acquisition control system and the first battery pack are installed in the pressure cabin; the observation probe rod It includes a probe body with a pore pressure sensor embedded on the surface. One end of the probe body is provided with a penetrating tip, and the other end is fixed with a data acquisition cabin. The end of the data acquisition cabin far away from the probe body is fixed with a second suspension ring. A data acquisition instrument, a second acquisition control system, and a second battery pack for power supply are installed. The invention is simple and easy to use, has high working efficiency, provides true and reliable observation data for monitoring and early warning of submarine geological disasters and marine engineering construction, and has important practical significance.

Description

technical field [0001] The invention relates to the technical fields of marine engineering geology and seabed in-situ long-term observation, in particular to a gravity penetration device and method of a probe rod for observing pore pressure of seabed sediments. Background technique [0002] my country is a big coastal country. In recent years, the engine effect of my country's marine scientific and technological innovation to promote the development of marine undertakings has become prominent. Large-scale marine engineering construction is in full swing, and the safety issues of marine engineering construction in the complex and changeable marine environment have become increasingly prominent, becoming a marine undertaking. development priorities. [0003] As the most direct and effective means of seabed observation, the submarine pore pressure observation probe can continuously, for a long time and in real time monitor the changes of pore pressure inside the seabed sediments...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02E02D1/02G01L11/00G01N15/08G01N33/24
CPCE02D1/027G01L11/00G01N15/0826G01N33/24
Inventor 贾永刚陈天孙中强季春生范智涵冯学志刘飞王慧徐超刘金明
Owner OCEAN UNIV OF CHINA
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