Blast hole filling material and preparation method thereof, and blast hole filling method

Abstract

The invention provides a blast hole filling material and a preparation method thereof, and a blast hole filling method, wherein the blast hole filling material comprises, by mass, 100 parts of a cementing material, 50-200 parts of fine aggregate, 5-10 parts of a swelling agent, 0.01-5 parts of a viscosity modifier, 0.01-1 part of a coagulant, and 0-1 part of a retarder. According to the present invention, the blast hole filling material provided by the embodiments has characteristics of no stirring, easy insertion, low reaction heat emission, rapid hardening, high blocking force and the like;and the preparation method and the blast hole filling method are simple and feasible, and can achieve manual one-hand operation, shorten the filling time, and improve the construction efficiency.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a blasthole filling material, a preparation method and a blasthole filling method. Background technique [0002] At present, blasthole filling materials in blasting construction are mainly manual blasting mud, machine-made blasting mud and blasting mud plugs. In tunnel blasting construction, due to the inconvenience of obtaining blasting mud on site, manual filling of blasting mud takes up a lot of charging time. In the case of water-rich geological sections, the blast hole will not stop flowing, which increases the difficulty of filling, resulting in the low filling rate of blast hole on site; In the construction of underwater drilling and blasting, in order to prevent the blasting of adjacent holes caused by shock waves, good filling is required, but because the gun mud becomes thinner or lost under the action of flowing water, it loses its blocking effect; The physical and m...

AI Technical Summary

Problems solved by technology

In tunnel blasting construction, due to the inconvenience of obtaining blasting mud on site, manual filling of blasting mud takes up a lot of charging time. In the case of water-rich geological sections, the blast hole will not stop flowing, which increases the difficulty of filling, resulting in the low filling rate of blast hole on site; In the construction of underwater drilling and blasting, in order to prevent the blasting of adjacent holes caused by shock waves, good filling is required, but because the gun mud becomes thinner or lost under the action of flowing water, it loses its blocking effect; The physical and mechanical properties of the blasting clay and the blasted body are quite different, and more flying stones are likely to be produced, and the pre-loading time is longer, and the blasting clay is easy to dry and shrink, which cannot achieve effective sealing; there is no good hole in the underground mine blasting project. Packing method

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