An engineering geological survey device and its application method

Abstract

The invention relates to the technical field of geological prospecting, and discloses an engineering geological prospecting device, which includes a drill pipe, a handle fixed to the upper part of the drill pipe and a drill bit fixed to the lower part of the drill pipe. A sampling device is arranged inside the drill head, and the sampling device includes a sampling pipe. The sampling pipe is movably connected in the drill bit through a movable structure, at least two collection grooves are formed on the sampling pipe, and a feed port is formed on the side wall of the drill bit, and the collection groove can correspond to the feed port. The present invention has the following advantages and effects: at least two collection grooves are formed on the sampling pipe in the drill bit. When the drilling depth of the drill bit is changed, the collection of soil samples in different soil layers can be conveniently realized through the correspondence between different collection grooves and feed ports, thereby There is no need to pull out the drill bit to discharge the material after drilling and sampling, and then the cumbersome steps of drilling and sampling, and the operation is convenient. Therefore, the sampling comparison of different soil layers is conducive to improving the accuracy of the survey.

Description

technical field [0001] The invention relates to the technical field of geological prospecting, in particular to an engineering geological prospecting device and its usage method. Background technique [0002] Geological prospecting is the abbreviation of geological prospecting work. In a broad sense, it can generally be understood as a synonym for geological work. It is based on the needs of economic construction, national defense construction and scientific and technological development. According to different purposes, there are different geological exploration work. [0003] At present, when carrying out geological exploration work, it is generally necessary to sample and observe the soil layers in a certain area, and in order to improve the accuracy of the sample research, it is usually necessary to sample the soil of different layers. However, the existing sampling devices only A single sampling can be carried out, but in order to ensure the accuracy of the survey, the...

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Problems solved by technology

[0003] At present, when carrying out geological exploration work, it is generally necessary to sample and observe the soil layers in a certain area, and in order to improve the accuracy of the sample research, it is usually necessary to sample the soil of different layers. However, the existing sampling devices only Single sampling can be carried out, but in order to ensure the accuracy of the survey, the staff needs to perform drilling and sampling, discharging, and drilling and sampling for many times, which is troublesome to operate

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