Esturine wetland sediment column sampling apparatus and method

An estuarine wetland sediment column sampling apparatus, comprising:

• a controller, a drill and a stabilizing frame;
• wherein the stabilizing frame comprises traction components, a drill lifting passage and a base;
• the traction components comprise first linear structures, a second linear structure, and a first ring-shaped structure on a top of the drill lifting passage, a second ring-shaped structure on the base, and a third ring-shaped structure on a top of the drill;
• the first linear structures pass through the first ring-shaped structure on the top of the drill lifting passage and the second ring-shaped structure on the base in sequence and is secured to the base;
• the drill lifting passage is arranged above the base and capable of passing through the base;
• the second linear structure tows the drill to lift and fall in the drill lifting passage;
• counterweight components are arranged on the base;
• the controller is connected to the drill;
• the controller is provided with a computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing a method of calculation for a drilling depth Y of the drill;
• the method of calculation is carried out in accordance with a following Equation I:
• Y
• =
• 1.0091
• X
• ⁢
• 1
• +
• 0
• .
• 8
• ⁢
• 31
• ⁢
• X
• ⁢
• 2
• -
• 0.001
• X
• ⁢
• 3
• -
• 0.001
• X
• ⁢
• 4
• +
• 0
• .
• 0
• ⁢
• 7
• ⁢
• 6
• Equation
• ⁢
• I
• wherein in Equation I, Y is a dimensionless value of the drilling depth with dimension of meters, X1 is a dimensionless value of a water depth during sampling with dimension of meters, X2 is a dimensionless value of a preset length of a sediment column sample with dimension of meters, X3 is a dimensionless value of a weight of the counterweight components with dimension of kilograms, and X4 is a dimensionless value of a preset diameter of the sediment column sample with dimension of millimeters.