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

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 conducting in-situ soil penetration at sea and simultaneous monitoring of pore water pressures at multiple different soil depths, and belongs to the technical field of marine exploration. Specifically, it is a multifunctional multi-channel pore water pressure monitoring probe for submarine 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 severe sea conditions, the high-intensity hydrological process can cause serious liquefaction of the seabed soil, thereby greatly reducing its carrying capacity. This will give rise to various engineering buildings based on the seabed, especially offshore platforms. Come with disastrous consequences. The problem of base soil liquefaction is a serious challenge to marine resource development projects. How to prevent it has...

AI Technical Summary

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 needs only by the gravity of the probe rod itself. Therefore, the depth of penetration of the above two devices and the position of the pore pressure sensor cannot be determined.

The above-mentioned instruments and equipment are not only insufficient in function, they cannot measure the physical and mechanical properties of the seabed soil, and it is impossible to use them in the environment of my country's sea areas

Images