Colloid heat insulation protection structure as well as preparation method and application thereof

Abstract

The invention discloses a colloid heat insulation protection structure applied to blasting in a high-temperature fire area. A colloid heat insulation layer is adopted at the external part of each of stick dynamite and initiating equipment, and the colloid heat insulation layers are fitted with each other uniformly; the external part of each colloid heat insulation layer is supported by a coupling fixing material; the colloid heat insulation layers are made of a composite high polymer material which is high in specific heat capacity, heat insulation and fire resistance and can resist temperature of 450 to 600 DEG C, and are in a gelatinization state. Due to the high specific heat capacity, temperature resistance, heat insulation and flame resistance of the colloid structure, the high temperature resistance and heat insulation performance of the whole explosive charging structure are improved, so that the initiating equipment and the stick dynamite are within the range of safe temperature within the blasting operation time; the use requirement specified by the safety standard of coal mine is met, and a certain scale of explosive can be blasted within safe time to meet the requirement of the blasting construction in high-temperature fire area in a mining area. Furthermore, the colloid material is simple in preparing procedure, convenient to produce in an industrial scale, low in cost, and sufficient in raw materials, so that the colloid heat insulation structure is low in total cost, and has an excellent market application prospect.

Description

technical field [0001] The invention belongs to the field of external heat insulation structures of detonators and industrial explosives, and in particular relates to a colloid heat insulation structure used outside detonators or common industrial explosives. Background technique [0002] my country's coalfield fires are mainly distributed in northern regions such as Xinjiang, Ningxia, and Inner Mongolia. Coal seam spontaneous combustion fires caused by shallow coal seam outcrops in open-pit coal mines, and coal seam spontaneous combustion fires caused by the collapse of the roof of the goaf formed by abandoned small coal kilns. The latter constitutes a great safety hazard to the safe production of open-pit coal mines. The latter makes the fire zone spread and expand to the hidden depths. Now the coal seam spontaneous combustion zone is more than 200 meters deep, and the difficulty of blasting mining and stripping production is further increased. [0003] According to incompl...

AI Technical Summary

Problems solved by technology

[0005] The existing problems in the prior art are as follows: 1. Rock fissures develop very well under high-temperature environment (80°C-300°C) in the fire area, and the development of rock fissures makes it difficult to retain the injected fluid state water in the blast hole. The cooling effect is not good, and it is difficult to meet the requirements of the environmental temperature for explosive filling; 2. The blasting equipment used in blasting operations and traditional industrial explosives do not have high temperature resistance, and no high temperature resistant and high heat insulation protection structure is adopted on the outside; 3. Blasting in the fire zone The amount of explosives loaded in a single operation (within 500kg) is small, and there are great potential safety hazards, which have seriously restricted the progress of stripping and excavation work

[0006] Application number 201120375811.1 (publication number CN202255144U, publication date 2012.05.30) discloses a kind of " high temperature resistant gun hole charge structure ", what adopt is to insert PVC pipe earlier in the gun hole, the asbestos mesh insulation pad is equipped with at the bottom of the tube, Then carry out the normal charging procedure and conventional detonation, and its temperature resistance can be charged normally at 120°C, which cannot meet the high temperature blasting in the fire zone.

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