Survey Tester Series of Wave Speed Test Instrument 3D Suspension Borehole Logging System

Product description:
3D Suspension Borehole Logging System is a four-channel high-resolution, digital wave velocity tester with time-sharing sampling, superimposition, filtering, signal enhancement, noise suppression, real-time calculation in the field, display of measured waveforms and test results. And other functions.

3D Suspension Borehole Logging System is mainly composed of a wave velocity tester, a wave velocity detector (referred to as a probe) and a special connection cable; the wave velocity detector is mainly composed of a cylindrical metal waterproof and fully sealed electromagnetic excitation source, and two independent full Sealed detector, damping and high-strength soft hose.

Application range:
1. Applicable engineering survey shear wave and compression wave test;
2. It is suitable to divide the stratum and determine the bearing layer of the foundation;
3. Provide parameters for seismic design: classify site soil type and site type, and discriminate ground soil liquefaction;
4. study the engineering properties of the soil layer;
5. Suitable for dividing rock weathering layer;
6. Suitable for deep wave drilling and wave velocity testing of harsh conditions in the formation, not subject to site conditions;
7. study the vibration characteristics of the foundation;
8. Research on geological disasters such as landslides;
9. Applicable pulsation excellence cycle test, etc.

According to the standard:
"Geotechnical Investigation Specification"-GB 50021—2001
"Code for seismic design of buildings"-GB50011—2010
"Code for Testing Ground-Based Dynamic Characteristics"-GB/T50269-97
"High-rise building geotechnical investigation procedures"-JGJ72-2004
"Port Geotechnical Investigation Specification"-JTS133-1-2010
"Port Engineering Geological Survey Specification"-JTJ240-97

Features:
We provide you with this 3D Suspension Borehole Logging System, which adopts the latest professional-grade industrial computer control, high-definition high-brightness large-screen color touch display, and touch operation on Win CE system platform. The instrument makes your operation more convenient.

This instrument adopts the excitation mode in the hole (that is, excitation in the hole, receiving in the hole, no need to strike the vibration source on the ground), you can collect any depth in the hole by simply pressing the [Internal Trigger] button. The wave speed related information is automatically processed, and the wave speed value is presented in front of you, which saves you a lot of cumbersome process of ground excitation and solves the problem of underwater drilling wave velocity test.

Choosing the 3D Suspension Borehole Logging System that we have provided for you, your drilling wave speed test process will become more convenient, easy, fast and free.

Working principle:
3D Suspension Borehole Logging System is a method for determining the wave velocity of the formation where the hole is located by using the detector placed in the borehole to receive the S-wave signal from the source to the first arrival time.

In the borehole, the well fluid is used as the coupling agent, and the electromagnetic shock source is applied to the borehole wall to exert an instantaneous impact force. Two types of particle vibrations are generated in the borehole formation. One is that the particle vibration direction is perpendicular to the borehole wall. , propagating along the direction of the well wall, called S wave (shear wave, shear wave); the other is that the particle vibration direction and the propagation direction are the same as P wave (compression wave, longitudinal wave).

The detector receives the vibration signal of the S wave and converts it into an electrical signal, and then transmits it to the computer. After the computer processes the signal, the computer uses two cross-correlation analysis methods to automatically calculate the time difference between the propagation of the S wave between the two detectors, thereby calculating The speed of S wave propagation between the two passes.

Technical Parameters: