Core taking device

Abstract

The invention provides a core taking device which comprises a core taking tube, a drilling rod, a drill bit, a rock core detection device and a central processer, wherein one end of the core taking tube is sealed; the other end of the core taking tube is opened; the core taking tube is provided with an inner wall and the outer wall which are arranged in a sleeving manner; the inner wall defines anaccommodation space in an encircling manner; an interlayer space is formed between the inner wall and the outer wall; the drilling rod is arranged outside the core taking tube; the drilling rod is connected with the sealed end of the core taking tube; the drill bit is arranged outside the core taking tube and is connected with the opened end of the core taking tube; a middle through cavity matched with the accommodation space is formed in the drill bit; the rock core detection device is fixedly arranged inside the interlayer space; the central processor is arranged outside the core taking tube, is electrically connected with the rock core detection device and is used for receiving signals transmitted from the rock core detection device. The environment around a rock core is not greatly changed, and properties of the rock core self are slightly changed, so that relatively accurate detection results can be achieved; positions of different parts of the rock core are stabilized, and properties of rock cores at corresponding depth can be relatively accurately detected.

Description

technical field [0001] The invention relates to the technical field of tools for rock coring detection, in particular to a coring device. Background technique [0002] Core taking is to use special coring tools to take the underground rocks to the ground in pieces during the drilling process. This piece of rock is called core, through which various properties of rocks can be detected, and the underground can be studied intuitively. Structural and rock-depositional environments, understanding fluid properties therein, etc. In the process of mineral exploration and development, it is necessary to carry out drilling work according to the geologically designed stratum level and depth, to lower the coring tool into the well, and to drill out the rock samples. The core is the most intuitive and practical data to understand the characteristics of the underground strata and ore-bearing characteristics. [0003] In the prior art, a commonly used testing procedure is to use a coring...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that the coring device in the prior art needs to pull out the rock core from the ground, and then detect the rock core after taking out the rock core, resulting in inaccurate detection, thereby providing A coring device that can detect rock cores without pulling them out of the ground

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