Seismometers are densely arranged along the survey line, enabling extensive and high-precision understanding of ground conditions!
At Kōa Development, we conduct "elastic wave exploration," which is triggered by sources near the surface (such as explosives or hammers) and investigates geological structures and engineering information such as the hardness and softness of the ground through differences in the propagation speed of elastic waves (P-waves) in the ground. We also evaluate stratification, rock classification, and geological area classification based on the results of elastic wave exploration. Currently, high-density elastic wave exploration, which allows for detailed placement of receiving points and the analysis of velocity inversion layers, has become mainstream. 【Features】 〈High-Density Elastic Wave Exploration〉 ■ Can grasp a wide range of ground structures in a short time ■ Can detect velocity inversion layers that could not be analyzed with conventional elastic wave exploration ■ Ground experts analyze and evaluate the exploration results ■ Provides engineering information about the ground estimated from elastic wave velocities *For more details, please refer to the PDF document or feel free to contact us.
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Koa Development was established in 1953 (Showa 28), and thanks to your support, we have surpassed our 60th anniversary, for which we are sincerely grateful. Our company started as a geological survey firm and now primarily focuses on consulting services related to ground and groundwater, as well as soil environment consulting and purification and restoration projects to maintain a rich global environment. In our country, natural disasters caused by earthquakes, heavy rains, and typhoons, such as the Great East Japan Earthquake and the Hiroshima heavy rain disaster, are frequent. This is exacerbated by Japan's unique vulnerable ground and steep terrain, which amplify the scale of disasters. In such a natural environment, the role our company plays as a group of ground experts (Geo-Doctors) is becoming increasingly important. We aim to further refine the ground and soil environment-related technologies that form the foundation for the development of social infrastructure and the construction of a sustainable society, providing optimal solutions and contributing to society so that everyone can live safely and securely. We will continue to prioritize our customers and strive for further development of our business, so we kindly ask for your guidance and encouragement.