Energy gathering device for energy gathering presplitting and smooth blasting

The utility model belongs to the technical field of tunnel construction, and discloses an energy-gathering device for energy-gathering presplitting and smooth blasting, which adopts the scheme of double energy-gathering parts and energy-gathering holes, on one hand, the energy-gathering parts can gather explosive products to form energy flow along the central line direction of the energy-gathering parts, and on the other hand, the energy-gathering parts can gather the explosive products to form energy flow along the central line direction of the energy-gathering parts; and the density of explosion energy flow is improved, so that the rock generates initial cracks, and the initial cracks are further expanded and communicated through gas generated by explosion to form a flat fracture surface. On the other hand, the penetrating energy gathering holes are formed in the bottom of the energy gathering pipe in the radial direction, the energy gathering holes can form point-shaped energy flow, the energy flow is conc