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Explosive compaction is an advanced ground improvement technique used to densify loose, unconsolidated soils where increased stability and reduced seismic risk are required. This method is particularly effective in regions with high seismic activity, where improving soil resistance to liquefaction and deformation is critical for reliable foundation performance.
The process involves strategically placed explosive charges detonated at engineered depths and controlled time intervals. The energy released temporarily liquefies the soil surrounding the blast point and generates cyclic loading in the surrounding ground. Through a series of controlled blast sequences, soil particles settle into a denser arrangement, reducing void ratios and increasing overall strength.
The results include measurable surface settlement, improved soil density, and enhanced resistance to cyclic loading, providing a cost‑effective alternative to traditional densification methods such as vibro‑compaction or deep dynamic compaction.
