Uncoupled charging positioning device and methods

Abstract

The invention discloses an uncoupled charging positioning device. The uncoupled charging positioning device mainly comprises an upper ring unit, an elastic support piece unit, a lower ring unit and ascaleplate. The upper end of the elastic support unit is movably connected with the upper ring unit, and the lower end of the elastic support piece unit is fixedly connected to the lower ring unit. The scaleplate is in a straight strip shape, and the scaleplate is provided with scales matched with the expansion radius of the elastic support unit. The upper end of the scaleplate is fixedly connected with the upper ring unit, and the lower end of the scaleplate is movably connected with the lower ring unit. The invention further discloses a concentric uncoupled charging method and an eccentric uncoupled charging method. The positioning device and the methods have the beneficial effects that an upper ring, a lower ring and elastic support pieces are used, the upper ring and the lower ring arefixed by an explosive roll, the explosive roll is separated from a blasthole wall by using the elastic support pieces, the centering problem of the uncoupled charging and the positioning problem in the eccentric uncoupled charging process in the prior art are solved, and meanwhile the breakage of the explosive roll and the hole blockage caused by the rough hole wall during the charging process are avoided as well.

Description

technical field [0001] The invention belongs to the technical field of blasting, and in particular relates to a positioning device and method for an uncoupled charge. Background technique [0002] Uncoupled charge is one of the main measures in the application of modern blasting technology. It uses materials such as water or air as the spacer medium to separate the explosive from the blasthole wall, so as to reduce the initial pressure of the blast wave acting on the hole wall and prolong the duration of the blast load. Effective action time, so that there is no crushing area around the blast hole or the crushing area is significantly reduced, thereby improving the effective utilization rate of explosive energy and achieving the purpose of improving the blasting crushing effect. Therefore, this technology can be widely used. [0003] In engineering blasting, uncoupled charge blasting in which the center of the charge column coincides with the center of the blast hole is cal...

AI Technical Summary

Problems solved by technology

However, these two methods cannot guarantee the accurate positioning of the medicine roll. For this improved method of binding small bamboo pieces, in the blasting project with large aperture and high uncoupling coefficient, there are many gaskets and the operation is troublesome; It is not smooth and the space is narrow, which often causes the drug roll to be damaged or blocked.

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