Emulsion explosive physical sensitization method capable of adjusting detonation velocity by fixing density

The invention belongs to the technical field of application of emulsion explosives, and discloses an emulsion explosive physical sensitization method capable of fixing density and adjusting detonation velocity. The method comprises the following steps: screening particle sizes to ensure effective hot spots in explosives; then determining the use density of the explosive and the addition amount of the two physical sensitizers in the emulsion matrix; meanwhile, carrying out oleophylic treatment on the physical sensitizer; and then, adding the physical sensitizer into a continuous explosive cooling device of a conventional emulsion explosive production line according to the dosage, and uniformly mixing to obtain the physically sensitized emulsion explosive. The method does not change the original production line and basic process of the emulsion explosive; the safety of explosive production and storage is ensured; the physical sensitizer subjected to surface oleophylic modification in advance ensures that no ext