Seabed Sediment Pore Water Hydraulics

Abstract

The invention discloses a submarine sediment pore water hydraulic device. The device comprises a frame, a hydraulic device, at least two squeezers for squeezing submarine sediments and a pore water collector for collecting pore water produced through squeezer-based squeezing. The squeezers are connected in series and are arranged in the frame. Each one of the squeezers comprises a pressure head, an outer cylinder and a base. The lower end of the pressure head is in a seal sliding fit relationship with the outer cylinder. The upper end of the pressure head stretches out of the upper end of the outer cylinder. The upper end of the base is sealedly inserted into the lower end of the outer cylinder. The lower end of the pressure head, the inner wall of the outer cylinder and the upper end of the base form a containing cavity filled with submarine sediments. The bottom surface of the base is provided with a slot in a plug-in fit relationship with the upper end of the pressure head. Through slot-pressure head plug-in fit, squeezer connection in series along a vertical direction is formed. The pore water collector is communicated with the containing cavities. The hydraulic device is provided with an implement end for outputting a vertical driving force. The implement end is connected to the pressure head of the squeezer at the top end. The submarine sediment pore water hydraulic device is convenient for assembling and disassembling, has a fast squeezing rate and high squeezing efficiency and has good sealing effects.

Description

technical field [0001] The invention relates to pore water collection and detection technology, in particular to a hydraulic device for seabed sediment pore water. Background technique [0002] In the existing seabed sediment pore water squeeze collection technology, CH in sediment samples can be quickly detected 4 、H 2 S and other gases and Cl - , SO 4 2- The abnormality and distribution characteristics of plasma provide fast and efficient geochemical evidence for the exploration of gas hydrate and oil and gas resources. However, the existing seabed sediment collection technology mainly uses gravity pistons to collect sediments, and then extracts pore water in the laboratory by means of ordinary pressing, centrifugation, and vacuum filtration extraction. After a long-term turnover, the process is complicated and it is difficult to obtain real data. Especially in the process of centrifugal treatment or vacuum filtration, the dissolved gas in the pore water will escape ...

AI Technical Summary

Problems solved by technology

However, the existing seabed sediment collection technology mainly uses gravity pistons to collect sediments, and then extracts pore water in the laboratory by means of ordinary pressing, centrifugation, and vacuum filtration extraction. After a long period of turnover, the process is complicated and it is difficult to obtain real data

Especially in the process of centrifugal treatment or vacuum filtration, the dissolved gas in the pore water will escape or disappear, so the original composition and information of the pore water cannot be accurately reflected; Difficulty separating the unit after pressing

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