What is the principle of single hole and cross hole wave velocity test methods? How is it implemented? What's the difference?
Introduction of German Geotomographie Trans-hole Seismic CT + Wave Velocity Test System 1. The whole system consists of: IPG5000 high-voltage energy storage transmitter; RCU remote control; SBS 42 P-wave transmitting probe; BHC-4 hydrophone chain (receiving P-wave); BIS- SH-DS S-wave electric spark probe in the hole; B
What is 3D seismic survey? How to choose and deploy observation systems?
Nanjing Institute of Water Resources Research on the Application of High Density Electrical Instrument in Dam Break Test.
How to evaluate the damage degree and remaining life of building structures that have been in service for a long time and experienced disasters has become a hot issue for scholars in various countries.
Seismology is one of the most effective methods to study the deep structure of the earth. The development of seismic tomography and dense array observation methods is an important change in seismology research.
The S-wave seismic method is more effective in determining shear strength and can measure the anisotropy of horizontal and vertical polarization. The main application methods include the wave velocity test in the hole (DHT), the wave velocity test across the hole (CHT), and the cross-hole tomography Wait.
Logging is a method of measuring geophysical parameters using geophysical properties such as electrochemical characteristics, conductivity characteristics, acoustic characteristics, and radioactivity of the rock formation. How many kinds of logging methods and probes are there? Can you tell the difference?