Smooth blasting method for vertical shaft driving in high-stress environment

A smooth blasting and high-stress technology, applied in blasting and other directions, can solve the problems of underground personnel, equipment threats, rockbursts, rockbursts, etc., and achieve the effect of leveling the empty surface, reducing the impact of vibration, and improving the damage effect

Active Publication Date: 2020-01-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, blasting operations under high stress conditions are likely to cause rockburst (rock burst), which is undoubtedly a potential threat to underground personnel and equipment.

Method used

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  • Smooth blasting method for vertical shaft driving in high-stress environment
  • Smooth blasting method for vertical shaft driving in high-stress environment
  • Smooth blasting method for vertical shaft driving in high-stress environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: as Figure 1~2 As shown, a smooth blasting method for shaft excavation in a high-stress environment, a central hole is opened at the center of the blast hole arrangement of the shaft rock in a high-stress environment, and several layers of ring-shaped main blast holes are opened on the periphery of the central hole. A ring-shaped smooth blasting hole is set on the periphery of the hole, uncoupled charging devices are installed in the main blast hole, and uncoupled charging devices are arranged at intervals in the smooth blasting hole; the uncoupled charging device in the main gun hole is controlled by a digital electronic detonator Accurately delay the detonation layer by layer from the inside to the outside and detonate the uncoupled charge device in the main blast hole of each layer at the same time, and the uncoupled charge device in the ring-shaped smooth blasting hole is controlled by digital electronic detonator to accurately delay the detonation hole...

Embodiment 2

[0034] Embodiment 2: as Figure 1~2 As shown, a smooth blasting method for shaft excavation in a high-stress environment, a central hole is opened at the center of the blast hole arrangement of the shaft rock in a high-stress environment, and several layers of ring-shaped main blast holes are opened on the periphery of the central hole. A ring-shaped smooth blasting hole is set on the periphery of the hole, uncoupled charging devices are installed in the main blast hole, and uncoupled charging devices are arranged at intervals in the smooth blasting hole; the uncoupled charging device in the main gun hole is controlled by a digital electronic detonator Accurately delay the detonation layer by layer from the inside to the outside and detonate the uncoupled charge device in the main blast hole of each layer at the same time, and the uncoupled charge device in the ring-shaped smooth blasting hole is controlled by digital electronic detonator to accurately delay the detonation hole...

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Abstract

The invention relates to a smooth blasting method for vertical shaft driving in a high-stress environment, and belongs to the technical field of mine development. According to the smooth blasting method for vertical shaft driving in the high-stress environment, a central empty hole is formed in the central position of blast hole arrangement for vertical shaft rock in the high-stress environment, aplurality of layers of annular main blast holes are formed in the periphery of the central empty hole, an annular smooth blasting hole is formed in the periphery of each main blast hole, a decouplingcharge device is arranged in each main blast hole, and decoupling charge devices are arranged in each smooth blasting hole at intervals; and the decoupling charge devices in the main blast holes arecontrolled through a digital electronic detonator to accurately delay and detonate layer by layer from the interior to the exterior, the decoupling charge devices in the main blast holes in each layerdetonate simultaneously, and the decoupling charge devices in the annular smooth blasting holes are controlled through the digital electronic detonator to accurately delay and detonate hole by hole.The method is capable of effectively carrying out blasting working in the high-stress environment, and carrying out blasting pressure relief working.

Description

technical field [0001] The invention relates to a smooth blasting method for shaft excavation in a high-stress environment, and belongs to the technical field of mine development. Background technique [0002] The depth of resource excavation and mining continues to increase. With the increase of mining depth, the problems faced gradually increase. For example, the high stress situation in the deep environment. With the increase of mining depth, the original rock stress and structural stress of the mine continue to strengthen , and grows linearly. Moreover, blasting operations under high-stress conditions are likely to cause rockburst (rock burst), which is undoubtedly a potential threat to underground personnel and equipment. Contents of the invention [0003] The present invention proposes a smooth surface blasting method for shaft excavation and blasting operations in such a high-stress environment. This method can effectively perform blasting and pressure relief work,...

Claims

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Application Information

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IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor李祥龙侯猛张智宇杨阳王建国袁芝斌张其虎王子琛母永烨吴霄
OwnerKUNMING UNIV OF SCI & TECH