CALCULATION METHOD FOR SEAFLOOR IN-SITU THERMAL CONDUCTIVITY AND DETECTION DEVICE USING SAME

摘要

A calculation method for a seafloor in-situ thermal conductivity and a detection device using the same, which relate to the technical field of seafloor in-situ heat flow detection. A gesture detection module detects a gesture and the movement condition of a probe at a seafloor, and then a main control module controls a heat pulse control module to excite a heat pulse, so as to perform electric heating on a heating wire of the probe at the front end of a measurement unit; the main control module controls a temperature collection module to collect temperature data of a submarine sediment, and then the temperature data is output to a PC machine; and a finite element numerical model is established by means of the PC machine, and parameter inversion is performed by using a grid encryption search method. The gesture detection module determines seafloor arrival conditions and performs automatic heat pulse control; an in-situ environment temperature and the in-situ thermal conductivity of a submarine sediment are acquired, so that the offshore operation safety and seafloor detection efficiency can be greatly improved; and by establishing an in-situ thermal conductivity numerical inversion method, the limitation of an analytical solution of a simplified model depended by the in-situ thermal conductivity solution is eliminated.