| 摘要 |
PURPOSE: A method of rock blasting using hydrofracturing is provided which reduces vibration and blasting sound according to reduction of explosive amount, increases fracturing force acted area, thereby increases fracturing degree of rock bed, prevents moisture absorption of explosive, suppresses dust and easily changes size of explosive can and water can according to conditions of the scene of labor. CONSTITUTION: The method comprises a step of drilling a plurality of charge holes to a certain depth into a rock bed in such a way that the charge holes are arranged in a certain shape; a step of separately charging explosive(8) and water(19) into at least one or more of the charge holes; a step of sealing an entrance part of the charge holes separately charged with the explosive and water using tamping material(9); and a step of detonating the explosive in the charge holes by a detonator(15), wherein the explosive is received in an explosive can, and water is received in a water can. The method comprises a step of drilling a plurality of charge holes to a certain depth into a rock bed in such a way that the charge holes are arranged in a certain shape; a step of inserting explosive into a lower part of at least one or more of the charge holes, and charging at least one or more of water cans respectively independently reorganized to receive at least water into an upper part of the at least one or more of the charge holes; a step of sealing an entrance part of the at least one or more of charge holes using tamping material; and a step of detonating the explosive in the charge holes using a detonator.
|
