Blasting device, blasting system and underground gasified coal seam pre-loosening method
An underground gasification and coal seam technology, applied in blasting, earthwork drilling, wellbore/well components, etc., can solve the problems that the blasting device cannot be directional blasted and the blasting device is low in practicability, so as to improve the blasting effect and ensure uniformity , Guarantee the effect of blasting range
Pending Publication Date: 2017-06-30
徐斌
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Problems solved by technology
[0003] In view of this, the present invention proposes a blasting device, which aims to solve the problem of low practicability of the blasting device in the prior art due to the inability of the blasting device to blast in a directional manner
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[0029] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0030] Examples of blasting devices:
[0031] see figure 1 , figure 1 It is a schematic diagram of the front view structure of the blasting device provided...
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The invention provides a blasting device, a blasting system and an underground gasified coal seam pre-loosening method. The blasting device comprises a shell, an explosive cartridge, a detonator and a dividing and blocking piece which is connected to the inner wall of the shell and used for dividing the inside of the shell into a first space and a second space. The explosive cartridge is arranged in the first space which is used for being placed towards a to-be-blasted layer. The detonator is arranged in the explosive cartridge in an inserted mode. According to the blasting device, the blasting system and the underground gasified coal seam pre-loosening method, the shell is divided into the first space and the second space by arranging the dividing and blocking piece, and the explosive cartridge is arranged in the first space facing the to-be-blasted layer so that the explosive cartridge faces the to-be-blasted layer when blasting, blasting all around when the explosive cartridge is detonated is avoided, the blasting directionality of the blasting device is improved, directional blasting of the blasting device is achieved, and the practicality of the blasting device is improved; and in addition, the explosive cartridge is arranged in the shell, the shell can achieve waterproof, dampproof and anti-pollution effects, and the situation that water or other matter causes pollution to the explosive cartridge, and consequentially the explosive cartridge cannot blast is avoided.
Description
technical field [0001] The invention relates to the technical field of underground coal bed gasification, in particular to a blasting device, a blasting system and a pre-loosening method for underground gasification coal seams. Background technique [0002] At present, blasting devices all insert a detonator in the explosive, and the detonator is used to ignite the explosive. The existing blasting device generally moves irregularly after being ignited, so that the whole area is exploded. When only the pre-blasting part needs to be blasted according to the relevant process requirements, the existing blasting device not only blasts the pre-blasting part, but also blasts other parts that do not need to be blasted, thus causing damage to the parts that do not need to be blasted. Therefore, the existing blasting device cannot realize directional blasting, which reduces the practicability. Contents of the invention [0003] In view of this, the present invention proposes a bla...
Claims
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Login to View More IPC IPC(8): E21B43/263F42D3/00
CPCE21B43/263F42D3/00
Inventor 魏传玉邢浩徐斌杜慧华徐军
Owner 徐斌