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Uncompensated space blasting failure processing method

A fault handling method and non-compensated technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems affecting the normal mining progress and mine output, large engineering volume, tunneling jumbo and medium and deep hole rock drilling Problems such as frequent transfer of trolleys

Active Publication Date: 2017-12-05
NANJING MEISHAN METALLURGY DEV
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  • Claims
  • Application Information

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Problems solved by technology

This method has a long construction period, a large amount of engineering, frequent transfer of the excavation jumbo and the medium-to-long hole drilling jumbo, and requires multiple blasting to complete the release of the compensation space, which greatly affects the normal mining progress and mine output.

Method used

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  • Uncompensated space blasting failure processing method
  • Uncompensated space blasting failure processing method
  • Uncompensated space blasting failure processing method

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specific Embodiment

[0040] The traditional rock drilling and blasting parameters of iron ore are as follows:

[0041] Rock drilling: three-center rock drilling, 9 holes, 91mm blasthole diameter, 2.4m row spacing, linear meters and inclination angle of blastholes (l 1 = l 9 =11.7, Ф=60°; l 2 = l 8 = 12.8, Ф = 70°; l 3 = l 7 =18.0, Ф=78°; l 4 = l 6 =21.0, Ф=85°; l 5 =24.0, Ф=90°).

[0042] Blasting: emulsified granular ammonium oil explosives, Aurikai high-precision detonator detonator, ore-breaking step distance 2.4m, hole-bottom distance 2.3-2.8m, charge density ρ=1.0g / cm 3 .

[0043] According to the downhole production and operation situation, the present invention is further clarified in combination with the application practice of field rock drilling and blasting parameters, the accompanying drawings and specific implementation methods.

[0044] ① Calculation and optimization of charge parameters of fan-shaped blast holes in the first row.

[0045] Detonation method: orifice detona...

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Abstract

The invention provides an uncompensated space blasting failure processing method. The method comprises the following steps that 1, first-row fan-shaped blast hole charging parameter calculation and optimization are performed; 2, detection system design and machining are performed; 3, after first-row blasting, on-site joint fissure development phenomenon condition and stretching height are measured, and the basis is provided for second-row blast hole charging design; 4, second-row fan-shaped blast hole charging parameter calculation and optimization; 5, after second-row blasting, on-site joint fissure development phenomenon condition and stretching height are measured, and the compensation space is released. Medium-length hole compensation does not need to be performed again, no extra workload need to be added, and processing can be completed by means of existing blast holes.

Description

Technical field: [0001] The invention relates to a fault processing method for uncompensated space blasting, and belongs to the technical field of deep hole blasting fault processing methods. Background technique: [0002] When caving ore in underground metal mines often involves upward mid-depth hole blasting, the ellipsoidal caving bodies after blasting need to be squeezed out from the ore draw. In the field, it often happens that the flow of the ore is not smooth or the ore is not released in time after the blasting, which leads to head-on crowding, that is, the lack of compensation space for free-surface non-extrusion blasting. The traditional treatment method is to re-excavate a roadway at a certain distance from the head and arrange it perpendicularly to the head, re-drill medium-deep holes in the rock in this roadway, cut the groove twice, wait for the completion of the groove and release the compensation space again, and then follow the original method. The route is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 李正刚
Owner NANJING MEISHAN METALLURGY DEV
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