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Digging method of ore pass

A technology for sliding mine shafts and vertical shafts, which is applied in the field of mine seam mining. It can solve the problems of poor safety, high cost, and long excavation time of sliding mine shafts, and achieve the effects of safe excavation process, reducing the time for going up and down the working surface, and avoiding poor ventilation.

Inactive Publication Date: 2018-07-27
山东烟台鑫泰黄金矿业有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of long excavation time, high cost and poor safety of the existing mine chute, the present invention provides a mine chute excavation method

Method used

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  • Digging method of ore pass

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Embodiment Construction

[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0017] A kind of excavation method of sliding mine shaft (referring to figure 1 ), comprising the main shaft 8 and the up and down adjacent upper layer roadway 1 and the lower layer roadway 2 communicated with the main shaft 8, through the following steps to realize the forming of the mine shaft:

[0018] The first step is to open the hole by down-the-hole drilling: use the down-the-hole drill to drill a central hole 3 from the lower roadway 2 to the upper roadway 1;

[0019] The second step is to install the hanging cage: a winch 4 is set in the upper layer roadway 1, the rope 6 of the winch 4 passes through the center hole 3, hangs in the lower layer roadway 2, and the hanging cage 5 is installed at the end of the...

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Abstract

The invention relates to a digging method of an ore pass. Forming of the ore pass is realized by steps as follows: step one, trepanning by a down-the-hole drill: a center hole is drilled by the down-the-hole drill from a lower roadway to an upper roadway; step two, cage installation: a winch is arranged in the upper roadway, a rope of the winch penetrates through the center hole and droops into the lower roadway, and a cage is mounted at the end part of the rope; step three, blasting for hole expansion: the down-the-hole drill is used again to drill blast holes in the positions, located on theperiphery of the center hole, in the lower roadway, a worker is lifted by the cage to fill the blast holes with the explosive, after explosive filling, the worker evacuates, the explosive is detonated, and the center hole is expanded; the hole expansion work is repeated until hole expansion of the center hole from the lower roadway to the upper roadway is completed, and the ore pass is formed. The method has the characteristics of safe construction, high efficiency and low cost.

Description

technical field [0001] The invention relates to a method for excavating a mine shaft, and belongs to the technical field of mine seam mining. Background technique [0002] The mine chute is the shaft through which the ore in the upper middle section is put into the lower transportation roadway by its own weight. Most of the existing mine shafts adopt the reverse excavation method from bottom to top, and support is carried out while construction is going upwards. When the upper part is fired, a safety shed is laid, and the ventilation adopts the cooperation of pressing in and sucking out. The disadvantages of the prior art: one is that because the upper layer roadway and the lower layer roadway are generally tens of meters apart, more complicated support is required when blasting holes at high positions, and the support must be evacuated every time a blast is fired, so the construction progress is slow and the project The cost is high; the second is that it is difficult to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F13/04E21B7/00E21B7/28
CPCE21F13/04E21B7/007E21B7/28
Inventor 袁永忠蔡兴健魏兴亮冯波朱国峰杨盼许杨驰
Owner 山东烟台鑫泰黄金矿业有限责任公司
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