A detonating device for high-temperature fire zone and its assembly method

Abstract

The invention discloses a detonating device used in a high-temperature fire zone and an assembly method thereof. The detonating device includes a sleeve, a detonating element, a sleeve, a buckle and an empty pipe, and an explosive roll and an endothermic substance are placed in the inner cavity of the sleeve. , the sleeve is connected to the mouth of the sleeve, and the bottom of the sleeve is provided with an empty tube, and the sleeve and the empty tube are fastened and fixed in the sleeve through stirrups. The detonating element passes through the casing and the empty pipe, and extends into the sleeve to connect with the explosive roll, and the initiating element and the explosive are soaked in the heat-absorbing substance. The assembly method is to put the detonating element into the sleeve with heat-absorbing material, put the empty tube on the bottom of the sleeve, fix the buckle on the detonating element, bind the detonating element to the explosive roll and install it with In the inner cavity of the sleeve of the heat-absorbing material, the empty pipe, the casing and the sleeve are fixed with stirrups at the mouth of the sleeve. The detonating device is safe and reliable, and can be applied to blasting in high-temperature fire areas.

Description

technical field [0001] The invention relates to the field of engineering blasting equipment, in particular to a detonating device used in a high-temperature fire zone and an assembly method thereof. Background technique [0002] The spontaneous combustion fire zone of the coal seam in the open-pit coal mine poses a great safety hazard to the blasting construction. At present, the blasting construction of the spontaneous combustion high-temperature fire zone generally uses water injection in the blast hole to reduce the temperature of the blast hole to the safe permissible temperature range of ordinary industrial explosives. However, in practice, due to the well-developed rock fissures in the high-temperature fire area, it is difficult for the water in the blast hole to remain, which makes the temperature of the blast hole rise quickly. Therefore, it is necessary to perform rapid charging, filling, and detonation before the temperature of the blast hole rises. , the entire bl...

AI Technical Summary

Problems solved by technology

[0002] The spontaneous combustion fire zone of the coal seam in the open-pit coal mine poses a great safety hazard to the blasting construction. At present, the blasting construction of the spontaneous combustion high-temperature fire zone generally uses water injection in the blast hole to reduce the temperature of the blast hole to the safe permissible temperature range of ordinary industrial explosives. However, in practice, due to the well-developed rock fissures in the high-temperature fire area, it is difficult for the water in the blast hole to remain, which makes the temperature of the blast hole rise quickly. Therefore, it is necessary to perform rapid charging, filling, and detonation before the temperature of the blast hole rises. , the entire blasting operation process is very hasty, resulting in a small amount of explosives loaded in a single blasting operation in a high-temperature fire zone, and a large safety hazard, which seriously restricts the progress of the stripping and excavation work.

For this reason, the application number 201410206203.6 discloses a heat-resistant and heat-insulating sheath, which can effectively slow down the temperature rise of the explosive in the sleeve, making it possible to carry out large-scale blasting in high-temperature fire areas. However, the problem of the combination of the detonating device and the explosive in the sleeve has not yet been solved

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