Axial non-coupling water spaced charging structure and smooth blasting method using same

Abstract

The invention relates to an axial non-coupling water spaced charging structure and a smooth blasting method using the same, and belongs to the technical field of blasting. The axial non-coupling water spaced charging structure comprises a tubular water bag I, a cartridge, a tubular water bag II, stemming and a detonating cord. The tubular water bag I is placed at the bottom of a blast hole, the front end of the tubular water bag I is connected with the cartridge, the front end of the cartridge is connected with the tubular water bag II, the front end of the tubular water bag II is filled with the stemming, and the whole blast hole penetrates to the bottom of the cartridge through the detonating cord. The smooth blasting method comprises the overall steps that main blasting holes are blasted firstly, and then smooth blasting holes are blasted; in a main blasting area, a row away from the outermost layer of the smooth blasting holes is blasted firstly, and then the remaining main blasting holes are blasted at the same time; and the smooth blasting holes are blasted from the center to the two sides in sequence. According to the axial non-coupling water spaced charging structure and the smooth blasting method using the same, blasting vibration can be greatly reduced, damage to reserved rock mass is small, meanwhile, vibration is small, damage is small, disturbance to the reserved rock mass is small, a formed slope is good in stability and effect, and meanwhile, blasting dust can be reduced.

Description

Technical field [0001] The present invention relates to a coupling without axial space blasting and water using a smooth blasting method thereof, belonging to the technical field of blasting. Background technique [0002] Blasting refers to the body part of the rock blasting, an effective free surface, then arranged in a borehole in the light of the contour line, as a protective layer "light burst layer" bombing other, forming a flat open digging surface. Blasting is a more advanced control blasting technology. It has been widely used in the construction of tunnels and develop, slope, hydropower stations and the like. Blasting is to control the scope and direction of the blast, the rock surface after blasting smooth, to prevent cracking of the rock face, in order to reduce over-excavation, digging and the amount owed engineering support and increase the stability of rock blasting vibration reduction effect, in order to achieve a technique for controlling the profile of the rock e...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the smooth blasting uses the simultaneous initiation of the smooth blasting holes, but the simultaneous initiation will cause large blasting vibrations and relatively large damage to the reserved rock mass, which is not conducive to the formation of a more stable slope wall.

Secondly, most of the smooth surface blasting technologies at the present stage are air-free coupling charges or charge coupling structures with the blasthole wall. Light blasting holes usually adopt the form of less charges and more holes, which will increase the drilling cost. At the same time, the amount of dust generated by blasting cannot be controlled, which has a great impact on the workers on the construction site and the environment.

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