Investigation of material properties necessary for structural design, ground strength investigation, and seismic resistance investigation of the ground.
"PS logging" is a method that utilizes boreholes to measure the P-wave and S-wave velocities of the surrounding ground. Compared to methods like elastic wave exploration, it allows for the acquisition of actual measured values underground. There are two types of methods: the "downhole method," where vibrations are generated at the surface and received inside the borehole, and the "suspension PS logging," where vibrations are both generated and received inside the borehole. 【Features of the Suspension Method】 ■ Vibrations are generated and received inside the borehole ■ Detailed velocity distribution can be obtained ■ The frequency of the received waveforms ranges from 500 to 2000 Hz, which is generally unaffected by normal noise ■ Effective for deeper depths ■ Measurements cannot be taken at depths shallower than the groundwater level *For more details, please download the PDF or feel free to contact us.
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Our company has been engaged primarily in geological structure surveys and ground property investigations through elastic wave exploration, electrical exploration, and logging using boreholes, with the motto of "safe, swift, and careful observation and measurement" and "high-precision and rapid analysis using advanced systems." Additionally, we conduct investigations such as buried pipe surveys using ground-penetrating radar, depth surveys for guardrail posts, dynamic seismic performance assessments of wooden houses using the Waseda method, simultaneous measurement of microtremors inside boreholes and at the surface, as well as investigations to understand the amplification characteristics of earthquakes (transfer functions) through standalone measurements at the surface. Please feel free to contact us if you have any requests.