Abstract: A deep-sea crawling robot and a crawling method thereof are provided. The deep-sea crawling robot includes a crawling robot body and a countertop, wherein a top of the crawling robot body is fixedly connected to the countertop, left and right sides of a bottom of the crawling robot body are respectively provided with crawler belts, and left and right sides of the countertop are respectively provided with weight-increasing auxiliary crawling mechanisms; and an outer plate is fixedly connected to a front side or back side of the countertop, a multifunctional propelling mechanism is arranged on the outer plate, and a rapid dewatering mechanism is arranged in a chamber of the countertop. The deep-sea crawling robot can not only accelerate the propulsion and crawling speed when it is on the seabed but also further enhance its stability during the crawling process on the seabed.

Abstract: A bottom touching assisting device suitable for deep-sea submersibles and an implementation method thereof are provided. Four support columns are arranged within a mounting box body at a bottom of a deep-sea submersible, the support columns and the mounting box body are connected in a sliding manner through sliders, and the support column is sleeved with a threaded sleeve in a threaded connection manner. In conjunction with a drive component and a pressing mechanism, smooth vertical movement of the support column is achieved when the threaded sleeve rotates. This allows a bottom end of the support column to extend from the mounting box body.

Abstract: An in-situ cultivation system of a deep-sea hydrothermal metallic sulfide deposits includes a hydrothermal metallic sulfide deposit mound body, a well casing, a well head control flow guide device, a fluid mixing control hood; the hydrothermal metallic sulfide deposit mound body includes a confining bed, a hydrothermal fluid enriching bed and mound body bedrock; perforations are formed at casing wall of the well casing; the well head flow control device is provided at top of the well casing; a lower opening is formed at bottom of the fluid mixing control hood and is sleeved on four sides of the top of the well casing; an upper opening is formed at top of the fluid mixing control hood; a plurality of fluid holes are formed at a lateral wall of the fluid mixing control hood; and a sulfide coating is applied to inner wall of the fluid mixing control hood.