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One-time blasting well forming method and double-underholing layered hole distribution method thereof

A cutting hole and double-cutting technology, which is applied in the field of one-time blasting well formation method and double-cutting layered hole layout, can solve the problems of layered charge blasting in the cutting hole, and achieve the effect of avoiding rock crushing

Inactive Publication Date: 2020-12-18
SHOUGANG CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a method for forming a well by one-time blasting and its double-cut layered hole layout method, which solves the technical problem in the prior art that the layered charges of the cut hole are blasted in the process of cutting the patio into a well.

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  • One-time blasting well forming method and double-underholing layered hole distribution method thereof
  • One-time blasting well forming method and double-underholing layered hole distribution method thereof
  • One-time blasting well forming method and double-underholing layered hole distribution method thereof

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Embodiment Construction

[0025] The embodiment of the present application solves the technical problem of blasting of layered charges in the process of cutting a raised well in the prior art by providing a method for forming a well by one-time blasting and its double-cut layered hole layout method.

[0026] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0027] see figure 1 , a double-cut layered hole layout method, which is applied to the one-time blastin...

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Abstract

The invention belongs to the technical field of blasting well forming, and discloses a double-underholing layered hole distribution method which is applied to one-time blasting well forming of a cutting raise. The method comprises the steps that a first slotting hole and a second slotting hole which are adjacently arranged are formed, and the depth of the first slotting hole is smaller than that of the second slotting hole; powder is charged into the first slotting hole and the second slotting hole respectively; the charging area of the second slotting hole is a section of in-hole space, higher than the first slotting hole, of the second slotting hole, and a section of in-hole space, as high as the first slotting hole, of the second slotting hole is vacant. The method provided by the invention can effectively restrain the sympathetic detonation problem of the cut hole layered grain in the one-time blasting well forming process of the cut raise, and the well forming quality and efficiency are guaranteed.

Description

technical field [0001] The invention relates to the technical field of well formation by blasting, in particular to a well formation method by one-time blasting and a double-cut layered hole layout method thereof. Background technique [0002] The construction of cutting wells usually uses rock drills to carry out shallow hole reverse excavation blasting technology, but the construction personnel are exposed in the patio and need to repeatedly build and dismantle the operation platform, resulting in high labor intensity, poor safety, and low construction efficiency. For this reason, in the prior art, one-time blasting is usually used to form wells to realize cutting patio construction; because when the depth of the well exceeds 10m, rocks are likely to be squeezed and regenerated rocks are formed in the cut, so it is necessary to carry out layered blasting in the cut hole , however, during the blasting process, limited by the free surface, the radial propagation of the deton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00
CPCF42D1/00
Inventor 李月喜师宏伟曹建伟王勇祝自伟严振湘陈国瑞张文东李红勇侯志刚
Owner SHOUGANG CORPORATION
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