Surface mine high-temperature blasting device and construction method thereof

Abstract

The invention discloses a surface mine high-temperature blasting device and a construction method thereof. The device comprises a bracket, a container, an explosive, a bulkhead, a priming material anda switch, wherein the bracket is a support mechanism for supporting the container; the container is used for layered loading of the explosive, the priming material and the bulkhead beforehand; the switch is used for remotely controlling automatic loading of the explosive, the priming material and the bulkhead in high-temperature blast holes; and the switch and the priming material are wirelesslycontrolled. The device enables constructors to leave from a high-temperature fire area in the explosive loading operation; a blasting system consisting of the priming material achieves independence and reliability, so that the high-temperature blasting safety is radically improved; and in addition, the system consisting of the device can load the priming material into multiple high-temperature blast holes at the same time without being limited by the number of traditional high-temperature blasting holes, so that the mine burning area blasting and stripping efficiency is improved.

Description

technical field [0001] The invention relates to the field of blasting engineering, in particular to a high-temperature blasting device for open-pit mines and a construction method thereof. Background technique [0002] The high-temperature blastholes produced by spontaneous combustion of coal seams in open-pit coal mines are likely to cause early explosion of explosives, which poses a great threat to blasting stripping construction. The current high-temperature blasting construction generally adopts rapid charge construction after water injection to cool down, or the blasting equipment is protected before loading construction. Since the temperature of some high-temperature blast holes rises quickly after water injection and cooling, it needs to be carried out before the temperature of the high-temperature blast holes rises sharply. Rapid charge, blockage, detonation and other work, the whole blasting construction process is relatively hasty and tense. The use of protective ...

AI Technical Summary

Problems solved by technology

[0002] The high-temperature blastholes produced by spontaneous combustion of coal seams in open-pit coal mines are likely to cause early explosion of explosives, which poses a great threat to blasting stripping construction

The current high-temperature blasting construction generally adopts rapid charge construction after water injection to cool down, or the blasting equipment is protected before loading construction. Since the temperature of some high-temperature blast holes rises quickly after water injection and cooling, it needs to be carried out before the temperature of the high-temperature blast holes rises sharply. Rapid charging, blockage, detonation and other work, the whole blasting construction process is relatively hasty and tense

The use of protective materials to protect blasting equipment can effectively delay the temperature rise of blasting equipment, but the cost of protective materials is high, which is not conducive to large-scale application

In addition, both of the above two construction methods require the construction workers to lower and lower the detonating cord, charge the charge, and block the high-temperature blast hole. If there are accidents such as premature explosion or false explosion, the life safety of the construction personnel will be seriously threatened. In order to reduce the level of possible accidents, the construction method controls the number of construction personnel, that is, adopts the principle of "few holes and multiple blasts" to carry out high-temperature blasting, which seriously affects the mine stripping and excavation work

[0003] Chinese patent application number 201610997022.9 discloses a remote-controlled charging device and construction method for high-temperature blasting in fire zones. The device allows construction personnel to load explosives, detonating cords and blockages into high-temperature blastholes (dangerous period) It can be far away from the high-temperature fire area, thereby improving the safety of high-temperature blasting in essence, but the switch network and initiation network included in the device make the preparation work too cumbersome, which is not conducive to on-site construction management, and is easily damaged during the construction process. In addition, the detonation network of the device will cause the failure of the original detonation network when an accident occurs at a certain node, so that the remaining safety hazards cannot be safely and reliably eliminated after the accident occurs.

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