Distributed step blasting equipment and blasting method

Abstract

The invention discloses distributed step blasting equipment and a blasting method, and belongs to the technical field of blasting. The distributed step blasting equipment comprises a blasting detonator main body, the upper end of the blasting detonator main body is fixedly connected with an isolation frame, the isolation frame comprises a pair of isolation covers, a supporting ring is connected between the pair of isolation covers, two points of the supporting ring are fixedly connected with protection cylinders, one end, away from the blasting detonator main body, of the isolation frame is fixedly connected with a fixed column, a connecting column is inserted into the top end of the fixed column, a movable column is inserted into the connecting column, a liquid storage cylinder is fixedly connected to the top end of the connecting column, a piston plate is slidably connected into the liquid storage cylinder, and an anchoring cover is fixedly connected to the top end of the liquid storage cylinder. According to the scheme, floating and sinking caused by explosion are reduced by spraying a dust falling agent while explosion is conducted, stage distribution type detonation is conducted at the same time, a plurality of auxiliary blasting devices are arranged around a main blasting device, an explosion area is ensured to be fully blasted, and it is ensured that the auxiliary blasting devices are not affected by vibration when a plurality of blasting points are blasted.

Description

technical field [0001] The invention relates to the technical field of blasting, and more specifically, to a distributed stepped blasting equipment and a blasting method. Background technique [0002] In the open-pit deep hole blasting, according to the different physical and mechanical properties of coal and rock formations, in order to reduce the technical and economic waste caused by excessive charge, it is sometimes necessary to charge the deep hole in separate sections. For dry holes, there are multiple measures for segmented isolation charge, but for water-rich drilling, the existing segmented isolation charge technology has disadvantages such as slow operation speed and uncontrollable isolation effect. In order to achieve fixed-distance isolated charge, accurate blasting, and reduce the adverse effects of explosion, it is necessary to consider the technology and device of segmented charge and accurate fixed-distance blasting. [0003] In the process of blasting const...

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Problems solved by technology

[0003] In the process of blasting construction, there will be accompanying hazards such as noise, flying stones, poisonous gas, dust and seismic waves. Among them, the seismic waves will quickly spread in all directions with a spherical wave surface, and the explosion will evolve from the initial shock wave to a compressive stress wave. Propagate along the rock-soil medium to the lining of nearby buildings, and the compressive stress wave will undergo complex diffraction, transmission and reflection phenomena at the lining of the building. At this time, if the building is sensitive to vibration, it will , shear stress and tensile stress may be damaged, so the seismic waves generated by the blasting vibration will inevitably have an adverse effect on the facilities. impact on one blasting device, which may cause other blasting devices to work poorly

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