Contamination Survey(net) - List of Manufacturers, Suppliers, Companies and Products

Contamination Survey Product List

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For elastic wave exploration! Wireless vibration measurement system (NETIS)

For elastic wave exploration! Wireless vibration measurement system (NETIS)

For concrete structures and the ground!

【Features】 ■ Synchronization between sensors with microsecond precision ■ Compact sensor body the size of a palm ■ No need for power preparation or wiring at the measurement location, allowing for easy installation ■ Sensors can be easily moved ■ Supports battery operation ■ Compatible with monitoring and remote surveillance via computer ■ Data can also be saved to the built-in SD card *For more details, please refer to the PDF document or feel free to contact us. #2

  • Other measuring instruments

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Improved elastic wave exploration service

Improved elastic wave exploration service

NETIS, registered as a patent! This method allows for the overall evaluation of the embankment in a planar manner.

Our company has developed an "Improved Elastic Wave Exploration" method to quantitatively and spatially evaluate the integrity (deformation level) of mass concrete in dams, which is being utilized in sand control dams nationwide. By setting up vibration points around the dam, we analyze the elastic waves that pass through the concrete in both vertical and horizontal directions, visualizing the elastic wave velocity distribution spatially and evaluating it quantitatively. The on-site work takes about 1 to 2 days, and the analysis results are organized visually in an easily understandable manner using contours and meshes. 【Awards and Achievements】 ■ Infrastructure Maintenance Award: Excellence Award (Received in 2021) ■ NETIS Registration Number: KT-190137-A (Registered in 2019) ■ Patent Registration Number: No. 6396074 (Registered in 2018) *For more details, please refer to the PDF materials or feel free to contact us.

  • Erosion control works
  • Geological Survey

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Geophysical exploration technology service "Tunnel Shallow Reflection Method Exploration (SSRT)"

Geophysical exploration technology service "Tunnel Shallow Reflection Method Exploration (SSRT)"

It is a face-forward exploration technology using the VSP processing method.

The "Shallow Seismic Reflection Survey for Tunnel (SSRT)" is a technology that uses elastic waves to predict the geology ahead of a tunnel face. It was jointly developed with Fujita Corporation for the purpose of exploring the area in front of the tunnel. Since it is possible to select artificial seismic sources (hydraulic impactors, vibrators, blasting sources) according to the conditions of the tunnel site being excavated, there are no limitations on the applicable tunnels. For example, it can also be implemented in mechanically excavated tunnels that include Tunnel Boring Machines (TBM). 【Features】 - It can be conducted outside the tunnel construction site before excavation. - Exploration is possible in hard rock formations, soft ground, tunnel entrance areas, and low cover sections. - Since exploration behind the tunnel face is also possible, it allows for a more accurate evaluation of forward exploration by comparing it with excavation results. For more details, please contact us or download the catalog.

  • Geological Survey
  • Non-destructive testing

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Technical Introduction: "Detection of Special Underground Shelters Using High-Frequency CSMT Exploration Method"

Technical Introduction: "Detection of Special Underground Shelters Using High-Frequency CSMT Exploration Method"

Confirmed high accuracy in practical experiments compared to other exploration methods!

At Geochronology Japan Co., Ltd., we can detect special underground cavities using the "High-Frequency CSMT Exploration Method" with cavity scanners. This exploration method allows us to determine the location of cavities without setting up a grid of measurement lines by utilizing the shadow effect. This technique has made it possible to detect high-resistivity materials, which were previously considered difficult to identify, thanks to the "Near-Field Amplifier Effect." 【Features】 ○ Grasp the approximate location of cavities across a wide investigation area ○ Determine the location of cavities with high resolution → The "Near-Field Amplifier Effect" reveals what was previously invisible with existing methods ○ Achieve a high soil cover ratio (depth to cavity / height of cavity: H/d ratio) ○ High versatility ○ Registered with NETIS, Patent No. 4229371 obtained For more details, please contact us or download the catalog.

  • Geological Survey Company
  • Other civil engineering services
  • Geological Survey

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