Undisturbed soil electric sampling device and system

Abstract

The invention provides an undisturbed soil electric sampling device and system. The device comprises a handle, a dowel steel with vertical grain and an auger drill bit which are connected in sequence, a sleeve, inversed wedged shape iron hoops, a pair of slant threaded rods and a ring knife drill bit; the sleeve is composed of a plurality of steel discs surrounding the periphery of a platform, the platform is connected to the top ends of the steel discs, and wedged structures are arranged on the inner sides of the steel discs; a screw thread is arranged on the upper end of each steel disc, and nuts which are located on the upper portions of second through holes are connected to the upper ends of the steel discs through the screw threads; the inversed wedged shape iron hoops are located in sleeve, and when the nuts are rotated to make the steel discs move upward relative to the sleeve, the inversed wedged shape iron hoops can be jointed with the wedged structures and push the wedged structures outward; the slant threaded rods are symmetrically meshed with the vertical grain of the dowel steel vertically, so that the slant threaded rods rotate, and the dowel steel can move in the vertical direction; a main body of an ultrasonic transducer can replace the auger drill bit and can be connected with the dowel steel detachably; the ring knife drill bit is connected to a vibration end of the ultrasonic transducer; the device further comprises a driving power source which is used for supplying power to the ultrasonic transducer.

Description

technical field [0001] The invention relates to the technical field of soil science experimental research equipment, in particular to an undisturbed soil electric sampling device and system. Background technique [0002] Soil physical parameters and their hydrodynamic characteristic parameters are important basis for studying soil hydrological process. In order to obtain soil physical parameters and its hydrodynamic characteristic parameters, undisturbed soil sampling is generally used. At present, with the large-scale exploitation of groundwater, the buried depth of the groundwater level in the North China Plain has dropped from 2-15m in the 1970s to 8-30m today, and even reached 56m in some areas. Then, the drop of groundwater level has expanded the research depth of soil hydrological process from the original few meters to more than 20 meters or even a larger range. [0003] Then, in the study of soil physical parameters and hydrodynamic characteristic parameters at lar...

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Problems solved by technology

[0008] The present invention provides an undisturbed soil electric sampling device and system to solve the problems of difficult soil sampling, low efficiency and high cost in the prior art of deep buried soil sampling devices

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