Rapid construction device suitable for high temperature fire district

Abstract

The invention discloses a rapid construction device suitable for high temperature fire district. A blast hole water storing bag is installed in a blast hole; the blast hole water storing bag is the bag body formed by successively adhering a waterproof material layer, a slide-resistant material layer and a high-temperature-resistant material layer from inside to outside; the bag opening of the blast hole water storing bag is fixed on the hole opening of the blast hole; the hole opening of the blast hole is provided with two chutes; the two chutes are respectively installed on the hole opening of the blast hole through a front low bracket and a rear high bracket; the lower end of the chute contacts with the bag opening of the blast hole water storing bag; the lower end of the chute is provided with an end cover; a blast hole stuffing is filled in one chute, and a waterproof charging bag is installed in the other chute; the bottom of the charging bag is provided with a balance weight material; an explosive and an igniting primer are installed above the balance weight material in the charging bag; and a detonating cord of the igniting primer is protruded to outside of the upper end of the charging bag. The rapid construction device suitable for the high temperature fire district is capable of satisfying the basic requirements of injecting water to reduce temperature and rapidly charging to explode in the high temperature fire district, reducing the water injection rate, shortening the period of the water injection, and accelerating the charging speed of the high temperature water hole and the blocking speed.

Description

technical field [0001] The invention relates to a rapid construction device suitable for high-temperature fire areas. Background technique [0002] At present, most coal mines in my country have been converted from underground mining to open-pit mining. Due to the spontaneous combustion of shallow exposed coal seams in some mining areas, a large amount of heat energy continues to be transmitted to surrounding rocks, resulting in excessive temperature in some areas, which seriously affects blasting construction. When carrying out blasting operations, it is necessary to take corresponding cooling measures for high-temperature blastholes. During the charging operation, the temperature of the blastholes must be within the range specified by the blasting regulations, and the number of people charged and the charging time are strictly limited, which increases the operator's workload. Labor intensity affects the blasting quality. [0003] At present, the main protective measures u...

AI Technical Summary

Problems solved by technology

Water injection cooling is the most widely used method at present. However, due to the long-term environmental impact in high-temperature fire areas, cracks are generally developed. When water injection cooling occurs, some blastholes seepage is serious, and the temperature rebounds quickly. The demand for water injection is very large, and the water injection cycle Long, which seriously affects the construction progress. At present, some high-temperature mines use auxiliary materials to increase the number of heat conductions in a short time. This method has a large amount of water injection, and the cost of auxiliary materials is high. The utilization rate of blast holes is low, and it is inconvenient to fill the blast holes. The blasting effect is not ideal, the construction is difficult, and the risk factor is high, so it is not an ideal blasting method

High-temperature-resistant materials and high-temperature-resistant explosives have not been widely promoted because of their high production costs, which have seriously affected production efficiency.

[0004] Water injection cooling is the most widely used cooling method in high-temperature fire areas. After water injection cooling, the volume of accumulated water in many blastholes accounts for more than 1 / 2 of the entire blasthole. For blasthole charging, some companies currently use bamboo chips and explosives. For methods such as pharmaceutical columns, the length of the powder column generally exceeds 2m, which makes it extremely inconvenient to load the powder column into the blast hole, and the standard of "9 people, 3 minutes, and 8 holes" is strictly followed, and the labor intensity of the operators is relatively high. Large, in the construction time of 3 minutes, it is difficult to ensure the quality of charge and packing quality, the overall blasting effect is poor, and the distance of flying stone flying is longer than that of normal blasting. At present, there is no fast charge applied to blastholes device

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