Method and its device for the in - situ - measurement of the thermal conductivity of sea bottom sediment.

摘要

The present invention provides a method and its device for the in - situ - measurement of the thermal conductivity of sea bottom sediments and belongs to the technical field of in - situ - measurement of the sea bottom heat flow. A position - and state of movement of a probe is on a sea bottom by a position detection module is detected, and subsequently, a heat pulse expensive module, by way of a higher-order control module, in order to excite a thermal pulse a heating wire of a front sensor head of a measuring unit to be electrically heating; meanwhile, a temperature elevation module by the higher-level control module is controlled in order to temperature data of sea sediments to the bottom and then to output to a pc; and a tc _ fe - value model is created by the pc, and a raster closures, adjustment of such method is used for the parameters inversion. According to the present invention, with the position detection module for judging a floor area of state and for carrying out of automatic control of the heat pulse in - situ - ambient temperature and the in - situ - thermal conductivity of the sea bottom sediments be obtained at the same time, and in addition, the safety in the offshore - operation and the efficiency of the sea bottom probes can be substantially improved; and by making a in - situ - thermal conductivity value - inversion process according to the invention, the limitation that the resolution of the thermal conductivity in - situ - on an analytical solution of a simplified model is based, is canceled.