Ground cross-hole resistivity CT detection cable universal for dry and wet holes

Abstract

The invention provides a ground cross-hole resistivity CT detection cable universal for dry and wet holes. The cable comprises an instrument number acquisition and analysis cable and a control cable; the instrument number acquisition and analysis cable and the control cable are arranged side by side; a plurality of electrode string bases are connected in series on the instrument number acquisition and analysis cable and the control cable in a sleeving manner; elastic sheets are connected to the outer side walls of the electrode string bases; the elastic sheets are connected with detection electrodes; the detection electrodes are electrically connected with the instrument number acquisition and analysis cable through the elastic sheets; each electrode string base is provided with a magnetic coil; the magnetic coils are electrically connected with the control cable; and the elastic sheets are located on the outer sides of the magnetic coils. The opening and closing of the magnetic coils are controlled through the control cable, and the winding and unwinding of the detection electrodes are controlled; when the detection electrodes are wound, the detection electrodes are attached to the electrode string bases, so that the cable can be conveniently placed in a drill hole; and after the cable is placed in place, the power supply of the control cable is switched off, the magnetic coils are powered off, and the detection electrodes expand outwards under the elastic force action of the elastic sheets and are connected to the side wall of the drill hole, so that the purpose of electric connection is achieved, and a relatively good measurement effect can be achieved.

Description

technical field [0001] The invention belongs to the technical field of engineering geophysical detection, and more specifically relates to a ground cross-hole resistivity CT detection cable common to dry and wet holes. Background technique [0002] As an important natural resource, underground space resources are of great significance in infrastructure construction, civil defense engineering construction, and environmental construction. Due to the complexity of underground geological bodies in the process of underground space development, if the interaction and interaction between underground space development activities and geological environment are not fully considered, environmental geological problems or geological disasters will occur under certain conditions. Environmental geological problems caused by the development of underground space, mainly including ground deformation or subsidence caused by karst, inrush piping or sand liquefaction caused by the penetration of...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention provides a ground cross-hole resistivity CT detection cable common to dry and wet holes, by setting magnetic coils and magnetic columns on the electrode string seat, and then controlling the remote control of the magnetic coil through the control cable Open and close to control the retraction and release of the detection electrode. When the detection electrode is folded, the detection electrode is attached to the electrode string seat at this time, and the cable can be conveniently placed in the drill hole. When the cable is placed in place Finally, turn off the power supply of the control cable. At this time, the magnetic coil is de-energized, and the detection electrode is opened outwards under the elastic force of the elastic sheet and connected to the side wall of the drilled hole to achieve the purpose of electrical connection. The measurement effect effectively solves the above-mentioned technical problems of inaccurate measurement

Images