Mechanical property in situ detector for deep sea surface layer deposit sediment

Abstract

Main body of clam type dredge hopper of the disclosed detecting device includes arm of dredge hopper, and perching knife. Characters are that a resistance sensor is fixed on the perching knife of arm of dredge hopper. The method for measuring resistance parameter of earth body of sediments on surface in deep sea includes steps: in sampling procedure in seabed, closing speed of the perching knife keeps sampling at uniform speed 2cm / s; using current process system of static probing data can analyze resistance data so as to obtain parameters including intensity, compressibility, compaction degree, and thickness state of sediments, and bearing capacity etc. features are: simple structure, easy of operation.

Description

technical field [0001] The invention relates to an in-situ detection device for mechanical properties of deep-sea surface sediments. Background technique [0002] With the development and utilization of deep sea energy, the requirements for detection technology of seabed soil engineering properties are getting higher and higher. At present, there are methods and corresponding equipment commonly used in the world such as deep-sea drilling, seabed static penetration, surface dredge bucket sampling, gravity sampling tube sampling and engineering geophysical prospecting. Deep-sea drilling is basically still blank in China, and deep-sea submarine static penetration has been introduced from abroad, but these two methods are complicated to operate and expensive in equipment. And because engineering geophysical prospecting can only qualitatively analyze the properties of the seabed soil, and the disturbed samples taken from the dredger are mostly used to analyze the type of soil. T...

AI Technical Summary

Problems solved by technology

Deep-sea drilling is basically still blank in China, and deep-sea submarine static penetration has been introduced from abroad, but these two methods are complicated to operate and expensive in equipment

And because engineering geophysical prospecting can only qualitatively analyze the properties of the seabed soil, and the disturbed samples taken from the dredger are mostly used to analyze the type of soil. The gravity sampling tube can take the samples back to the laboratory for physical and mechanical properties testing, but After the disturbance in the sampling and handling process, the sample has been "distorted" and cannot accurately reflect the physical and mechanical properties of the in-situ soil

Therefore, in actual exploration, dredge bucket sampling is mostly used, combined with engineering geophysical prospecting methods to conduct qualitative analysis on the physical and mechanical properties of deep-sea soil. Obviously, actual measurement is still inconvenient.

Images