Blasting tube for mining and vein blasting mining construction method

The invention discloses a blasting tube for mining, which comprises an energy-gathering tube and filling powder, the energy-gathering tube is of a hollow columnar structure, the energy-gathering tube is provided with an energy-gathering groove, the energy-gathering groove is a through groove parallel to the axis direction of the energy-gathering tube, and the energy-gathering groove is a V-shaped groove, so that the effect of impact waves generated by blasting is controlled, and stress generated by blasting is spread according to an expected direction; cracks are generated, and rock kerfs are formed. Detonation waves generated in the blasting process pass through the energy gathering groove of the energy gathering pipe, kinetic energy and potential energy are converted into high-pressure, high-speed and high-energy jet flow, rock is cut to form seams, crack development in the energy gathering direction is enhanced, the blasting effect is improved, back break is reduced, and the ore breaking range is controlle