Cross-shaped full flow feeler inspection probe used for marine ultra-soft soil in-situ test

Abstract

The invention discloses a cross-shaped full flow feeler inspection probe used for a marine ultra-soft soil in-situ test. The cross-shaped full flow feeler inspection probe comprises a testing system and a probing end. The probing end is in a cross shape and is vertically fixed to the lower portion of the testing system. The upper portion of the testing system is connected with a feeler lever. Thetesting system comprises sensors, a signal transmission line and a sleeve arranged on the feeler lever in a sleeving mode. The sleeve comprises a friction sleeve body and an end friction sleeve body.The friction sleeve body is arranged on the end friction sleeve body. The sensors comprise a friction pressure sensor arranged on the friction sleeve, an end friction pressure sensor arranged on the end friction sleeve body, and a pore water pressure sensor arranged on the end friction sleeve body. The friction pressure sensor is used for sensing the friction force. The side, close to the probingend, of the end friction sleeve is provided with a pore pressure filter ring. The cross-shaped full flow feeler inspection probe can conduct low feeler inspection on seafloor/underwater ultra-soft soil layers, accurately measure relevant physical and mechanical property parameters of the ultra-soft soil layers, and reliable reference is provided for marine engineering exploration and foundation construction.

Description

technical field [0001] The invention relates to a cross-shaped full-flow penetrating probe for in-situ testing of marine ultra-soft soil, which is a special-shaped in-situ testing device capable of obtaining the strength and consolidation properties of seabed / underwater ultra-soft soil, belonging to Geotechnical and Ocean Engineering technical fields. Background technique [0002] The country has more and more engineering projects in the construction of coastal areas and the development of marine resources, such as land reclamation, sea-crossing bridges, submarine tunnels, offshore wind power, offshore oil drilling platforms, submarine combustible ice drilling platforms, etc. . While the number of projects has increased substantially, marine engineering has also continued to develop from near seas to far seas, from shallow seas to deep seas, and the scale of projects is increasing day by day. This puts forward higher requirements for the safety and durability of marine eng...

AI Technical Summary

Problems solved by technology

[0005] For the seabed / underwater ultra-soft soil static penetrating test, the end resistance and the change value of the end resistance of the probe during the penetration of the underwater ultra-soft soil layer are small, and it is difficult to measure accurately, so that the physical and mechanical properties of the soil It is difficult to accurately obtain the property index and cause inconvenience to the subsequent construction. The present invention proposes a cross-shaped full-flow penetrating probe. Using the special shape of the probe and the internal sensor components, when the probe end is hoisted with the static penetration system To the seabed, after penetrating into the seabed soil layer, the relevant parameters of the soil layer at the penetration depth can be continuously and accurately measured. The specific technical scheme is as follows:

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