Method for filling blast holes

Abstract

The invention discloses a method for filling blast holes. The method comprises the following steps of: step 1, calculating the explosive consumption of the blast holes per unit or in blasting area per unit according to the blasting environment and a preset blasting purpose; step 2, presetting different explosive densities according to the blasting environment or the blasting purpose of the rock hardness, the rock joint, the surrounding water content and the like; step 3, filling various blast holes with explosives in various densities in a blasting field according to the various explosive densities preset in the step 2; and step 4, backfilling and sealing the blast holes, wherein in the step 3, the explosives in preset densities are filled in the blast holes, the space of the blast holes can be filled, a spacer can be abolished, and sealing opening backfilling sections in certain lengths can be preserved at the outermost ends of the blast holes. The chemical reaction generating efficiency of the explosives can be increased, the blasting effect can be improved, the explosive consumption per unit can be reduced as well, and the purchasing cost of the spacer can be saved.

Description

Technical field [0001] The invention belongs to a blast hole filling technology in the field of blasting technology. Background technique [0002] In the past, the filling of blastholes relied on a kind of spacer to reduce the unit consumption of explosives, improve the blasting effect, and increase the detonation wave work space. The materials were mostly air plugs, hanging bags in the holes, PVC pipes, bamboo plugs, and slag. Wait. Such as figure 1 In the left and middle pictures in the middle, the reference number 3 is a spacer; the reference number 1 is the material of the blasthole sealing backfill section, such as rock slag. [0003] The technical process of the existing spacer is roughly as follows: [0004] Calculate the unit consumption of explosives, select fixed-density explosives 2, and place spacers 3 to separate explosives 2 in the blast hole. [0005] In order to reduce the unit consumption of explosives and reduce the filling height of blastholes, the grains are inc...

AI Technical Summary

Problems solved by technology

When the rock is hard and the joints are not developed, the spacer will not have a substantial effect. At this time, if the spacer is used to increase the charge column, the blasting effect will be poor

[0013] To sum up, the use of spacers to space the explosives in the blast hole results in higher cost, more complicated process, poor blasting effect and low efficiency

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