TZD drilling radar detector

TZD drilling radar detector

TZD drilling radar detectorSuitable for geological advanced detection of drilling radar tunnels in mines, highways, railways, water conservancy, and other industries. The main detection contents include fault zone detection, cavity detection, aquifer detection, weak rock layer detection, and rock layer detection.
Introduction to the principle of TZD drilling radar detector
The drilling radar tunnel geological advanced detection imaging instrument is based on the principle of drilling radar reflection imaging using advanced drilling in tunnels. It includes radar transmitting and receiving antennas and a host. The antenna is connected to the host through optical fiber and performs data acquisition, storage, display, processing, analysis, and imaging. The radar transmitting and receiving antenna is placed in the borehole and scanned for detection imaging at a certain speed. It emits and receives reflected signals in a 360 degree space around the borehole; The distance of the reflector, whether the reflector is planar or three-dimensional, and the angle between the planar body and the borehole can be calculated and analyzed from the image detected by only one borehole; But the orientation of the reflector cannot be obtained.
For example, imaging of planar fault zones intersecting through boreholes and imaging of point (shape) reflectors can be performed. When explaining the imaging obtained from a single hole, only the distance from the borehole can be obtained, and the direction of the reflector cannot be given; To estimate the orientation of the reflector, images of at least two boreholes are required. Figure 3 shows that an antenna with a frequency range of 30-200 MHz can image the spatial distance of over 30 meters around the borehole. At present, the center frequency of the antennas provided by the company can range from 20 MHz to 50 MHz.
When the antenna is on the outer end (upper) of the reflection surface of the fracture zone, it maps the outer end (upper) of the reflection surface, that is, maps the left part of the borehole. When the antenna reaches the inner end (lower) of the reflective surface, a map is drawn on the inner end (lower) of the reflective surface, that is, a map is drawn on the right side of the borehole. When explaining the collection of images, it is necessary to remember that radar images are received 360 degrees. The image displayed by the point reflector is a hyperbolic graph.
Technical specifications of TZD drilling radar detector
Antenna frequency: 30 MHz to 200 MHz;
Antenna type: Dipole antenna;
A/D conversion: 16 bits;
Instrument power supply: 12VDC, can work continuously for 8 hours, can be quickly charged;
Data transmission: Ethernet cable, capable of withstanding a tensile force of 200 kilograms;
Working mode: single hole reflection;
Antenna weight: 3.0kg -8.0kg;
Antenna length: 150cm -300cm;
Antenna diameter: 36mm.