A kind of in-situ pore water sampling water column and water sample collection method

Abstract

The invention relates to an in-situ pore water collection column and a water sample collection method, wherein the in-situ pore water collection column includes a drilling head and a water collection device unit, at least two water collection device units are connected by a clamp, and the water collection device The unit includes a solenoid valve installation bucket, a sampling cylinder, a waste water tank, a sample water tank, a solenoid valve, a composite filter layer, a balance piston, a control cable and a diversion tube, and the in-situ pore water sampling water column water sample collection method includes a water collector unit Four steps including pretreatment, drilling, deep water sampling and lifting. On the one hand, the present invention can effectively collect deep seabed water samples, and the collected water samples have a high degree of cleanliness; on the other hand, it also improves the adaptability and resistance of the equipment to changes in ocean pressure, and improves the operation stability and reliability of the equipment. Reliability, at the same time, the present invention has a simple and standardized operation method, which effectively improves the work efficiency of collecting deep seabed water samples, and helps to improve the operating proficiency of operators.

Description

technical field [0001] The invention relates to an in-situ pore water sampling water column and a water sample collection method, belonging to the technical field of marine exploration equipment. Background technique [0002] At present, when conducting deep-sea exploration and geological research, it is often necessary to collect the in-situ pore water contained in the deep seabed sea mud. The depth of the seabed is generally not less than 4,000 meters. The bottom of the ocean cannot be directly collected by divers, and must be collected with the help of in-situ pore water sampling equipment. However, the current in-situ pore water sampling equipment used mostly uses the method of standpipe sampling. Bou-Rouch The sampler is the most widely used sampling device at present, but in actual use, it is found that the Bou-Rouch sampler has better working performance in the collection of underwater pore water at low depths, but for many higher oceans When collecting bottom pore w...

AI Technical Summary

Problems solved by technology

[0002] At present, when conducting deep-sea exploration and geological research, it is often necessary to collect the in-situ pore water contained in the deep seabed sea mud. The depth of the seabed is generally not less than 4,000 meters. The bottom of the ocean cannot be directly collected by divers, and must be collected with the help of in-situ pore water sampling equipment. However, the current in-situ pore water sampling equipment used mostly uses the method of standpipe sampling. Bou-Rouch The sampler is the most widely used sampling device at present, but in actual use, it is found that the Bou-Rouch sampler has better working performance in the collection of underwater pore water at low depths, but for many higher oceans When collecting bottom pore water, it is very easy to cause the Bou-Rouch sampler to fail due to excessive ocean pressure, and even cause damage to the structure of the Bou-Rouch sampler when the Bou-Rouch sampler is sampling at the same time Therefore, the Bou-Rouch sampler cannot effectively meet the needs of deep-sea environmental pore water sampling at depths below 4000 meters. To solve this problem, it is urgent to develop a professional deep-sea environmental principle. Bit pore water sampling equipment to meet the needs of actual use

Images