Weak-vibration blasting charging device and using method thereof

A charge and explosive technology, which is applied in the field of weak shock blasting charge devices, can solve the problems of poor construction economy, long time-consuming, complicated operation, etc., and achieve the effects of low device cost, good shock absorption effect, and reduced blasting vibration intensity

Active Publication Date: 2020-04-10
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device utilizes shock-absorbing holes and shock-absorbing rubber cartridges for shock absorption, and each shock-absorbing hole needs to be filled with shock-absorbing rubber cartridges. The construction economy is poor, the operation is complicated, the efficiency is low, and it takes a long time; seam

Method used

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  • Weak-vibration blasting charging device and using method thereof
  • Weak-vibration blasting charging device and using method thereof
  • Weak-vibration blasting charging device and using method thereof

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Embodiment Construction

[0034] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The main blasting parameters of a deep hole in an open-pit stonework mining are as follows: step height 8m, super depth 0.8m, drilling inclination 90°, hole depth 8.8m, drilling diameter 76mm, row spacing between holes 3.0*2.5m, explosive roll The diameter is 32mm, and the plugging length is 3.0m.

[0036] The weak shock blasting charge device shown in the figure includes a cylindrical shock absorbing tube, a stiffened ring and a mounting rod.

[0037] Among them, the central angle of each shock-absorbing piece whose cross-section is a fan-shaped ring is 170°, and the material of the flexible layer 11 is a sponge material; the thickness of the hardened interlayer 12 is 10 mm, and the distance from the edge of the pipe wall is 8 mm. Gypsum mixture. There are plastic hard material plates used for shaping on the outside of the har...

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Abstract

The invention discloses a weak-vibration blasting charging device and a using method thereof. The device comprises a plurality of sections of cylindrical damping pipes, reinforcing rings and a mounting rod; each single section of cylindrical damping pipe is formed by splicing two damping sheets, and two symmetrical notches are formed in each cylindrical damping pipe; the damping sheets are made ofperipheral flexible materials and middle hard shaping materials; the reinforcing rings are arranged outside the cylindrical damping pipes at equal intervals; and the mounting rod is the hollow straight rod, and hook-shaped protruding blocks are arranged on the mounting rod at equal intervals. According to the device, the cost is low, and the damping effect is good; the flexible materials are wrapped around a hardened interlayer, so that the damping and buffering effects are achieved in the blasting process, and the blasting vibration strength is greatly reduced; and meanwhile, under the different effects of detonation gas on the cylindrical damping pipe structures and rock masses at the reserved notches in the two sides of the cylindrical damping pipe structures, the rock masses at the notches can be cut and damaged, so that fissures are firstly generated on the hole walls near the notches, and under the effect of the detonation gas, the fissures are further expanded and connected with fissures generated by adjacent blast holes to form the cracks.

Description

technical field [0001] The invention relates to the technical field of blasting engineering, in particular to a weak shock blasting charge device and a method for using the same. Background technique [0002] In recent years, my country's hydropower, highways, railways, mines and other construction projects have continued to develop, and most of the rock mass excavation projects use blasting excavation, and the ensuing stability of surrounding rocks and the impact of blasting vibration on the surrounding environment have become increasingly prominent. . [0003] The vibration caused by blasting excavation has a great influence on the stability of the surrounding rock mass. The rock mass is often not a whole, and there are many joints and fissures in it, which are composed of various structural surfaces and structures. Explosives explode in the rock mass, causing disturbances in the surrounding medium, and propagate outward in the form of waves. Shock waves propagate in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/08F42D5/045
CPCF42D1/08F42D5/045
Inventor 陈明卢文波朱子晗严鹏
Owner WUHAN UNIV
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