Blast hole blocking device for blasting construction

Abstract

The invention relates to a blast hole blocking device for blasting construction and a blast hole blocking method, and belongs to the technical field of blasting engineering. The device is provided with a channel allowing a detonating cord to penetrate through, and meanwhile the device further comprises an end plate, a shaft rod, connecting rods, a support, elastic stress rods, supporting rods and the like. In the implementation process, the overall specification of the device is matched with the diameter of a blast hole, and the device is integrally placed at a blast hole blocking position. During blasting, blasting impact waves act on the end plate, the shaft rod moves outwards through the instantly-generated blasting impact force, connecting ends of the connecting rods and connecting ends of the elastic stress rods form the expansion effect through hinge structures of the connecting rods, and therefore the elastic stress rods are tightly attached to the wall of the blast hole, and the better blast hole blocking effect is achieved. The device can be applied to horizontal blast holes and can also be applied to various blast holes such as vertical blast holes and inclined blast holes. The device is convenient to operate and high in packing quality assurance.

Description

technical field [0001] The invention relates to a blast hole plugging device used in blasting construction, and at the same time relates to a blast hole plugging method, which belongs to the technical field of blasting engineering. Background technique [0002] Drilling and blasting is a common technology for tunnel excavation, and it is widely used in water conservancy and hydropower, mining, transportation and other fields. During the blasting construction process, filling the blast hole can increase the pressure of the detonation gas on the hole wall and prolong the time of the pressure action, thereby greatly improving the degree of rock expansion and throwing distance, thereby improving the blasting effect. In current projects, local materials are often used, and mud chips and other materials are generally used as blasting mud to fill the blast holes, which is inconvenient to operate and poor in quality assurance. Contents of the invention [0003] The technical prob...

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