[Data] DK Bond Method Construction Performance Site Investigation Record (Hanshin-Awaji Earthquake)
Introduction of the site investigation records for the construction results of rockfall prevention works that bond rockfall sources.
The Great Hanshin-Awaji Earthquake, which occurred in the early morning of January 17, 1995, vividly demonstrated the terrifying nature of urban-subduction earthquakes. In the disaster area, there were several locations where rockfall prevention work was carried out using the DK Bond method. Our company conducted a follow-up survey on the impact of the earthquake on these construction sites from mid-February to early March, one month after the disaster. This document includes the survey records of those construction achievements. [Contents] ■ Investigation of the disaster area ■ Overview of the earthquake ■ Conditions of adjacent non-construction areas and rockfall occurrences *For more details, please refer to the PDF document or feel free to contact us.
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The construction method of this technique closes cracks and openings to prevent loosening of the rock due to weathering, while also dispersing concentrated stress in the area. It exhibits excellent durability against repeated loads such as earthquakes and demonstrates a high rockfall prevention effect. When applying this method, its features include: 1. It can be applied to large rocks and high-altitude rocks that have high potential in mountain slopes and similar areas. 2. It can fix natural rock formations in their current state, and the construction traces harmonize with the landscape, making it particularly effective for use in natural parks and scenic areas. 3. Since there are no alterations to the natural features or new structures, and the construction equipment is minimal, it can be easily combined with other methods.