Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil

A pore water pressure and multi-functional technology, which is applied in the direction of measuring fluid pressure, measuring fluid pressure through electromagnetic components, measuring fluid pressure through mechanical components, etc., can solve the problem of insufficient use function, the indetermination of the depth of the soil and the position of the pore pressure sensor, Problems such as the physical and mechanical properties of the seabed soil cannot be measured, so as to achieve the effect of simple structure, avoiding long data transmission distance, and convenient operation and control

Inactive Publication Date: 2006-06-21
THE FIRST INST OF OCEANOGRAPHY SOA +1
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Problems solved by technology

Their penetration into the soil layer is in the form of free fall, and they can only go deep into the soil layer by their own gravity. For the shallow water sandy sea area on the continental shelf of our country, especially for the hard sandy bottom commonly known as "iron plate sand" As far as the sea area is concerned, it is impossible to penetrate the soil layer to a certain depth according to the measurement n

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  • Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil
  • Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil
  • Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil

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Embodiment Construction

[0031] An embodiment is described with reference to the accompanying drawings. figure 1It shows the structural diagram of a multifunctional and multi-channel pore water pressure monitoring probe specially designed for the seabed soil liquefaction field monitoring system. The subsea soil multi-functional multi-channel pore water pressure monitoring probe rod has a double-bridge static penetration (CPT) probe 5 at its lower end which is an electric measuring static penetration probe, and its upper end is a data mining sealed chamber 1. Between the data acquisition sealed chamber 1 and the static penetrating probe 5, there are 8 measuring rod end joints 2 arranged alternately and a hollow connecting sleeve 3, and 8 pore water pressure probes 10 are installed on the 8 measuring rod end joints. ,Such as Figure 5 shown. The distance between the pore water pressure probes is 0.5 meters within 2 meters from the top of the probe rod, and 1 meter below 2 meters. The two ends of the ...

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Abstract

The invention discloses a hydraulic monitor rod of seabed soil multifunctional multipath pore in the sea detection technique domain, which is characterized by the following: the bottom of hydraulic monitor rod contains static CPT probe 5 and the top contains data sealing bin 1; several sectional interphase arrangements of detecting rod end connector 2 and hollow connection sleeve are connected between the data sealing bin 1 and static CPT probe 5. The invention can be used in the hard sand marine site of named 'steel sand', which is allocated safely at even slow speed to monitor different depths of wave and tide condition.

Description

(1) Technical field [0001] The invention relates to a device for in-situ soil penetrating probe at sea and synchronous monitoring of pore water pressure in multiple different soil layers, belonging to the technical field of marine detection. Specifically, it is a multifunctional multi-channel pore water pressure monitoring probe rod for seabed soil. (2) Background technology [0002] With the development of offshore oil and gas resources, more offshore engineering facilities have appeared in the shallow waters of my country's continental shelf. Under harsh sea conditions, high-intensity hydrological processes can cause severe liquefaction of the seabed soil, thereby greatly reducing its bearing capacity, which will bring serious damage to various engineering structures based on the seabed, especially offshore platforms. to catastrophic consequences. The problem of soil liquefaction is a serious challenge to marine resource development projects. How to prevent it has become...

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Application Information

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IPC IPC(8): G01N33/00G01L7/00G01L9/00G01N35/00
Inventor 李培英徐松森吴伟李德堂刘乐军田海庆马小兵樊敦秋刘自力张亭健曹成效辛海英纪育强孙汝建刘学海
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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