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Medium-deep hole blasting calculation method

A technology of deep hole blasting and calculation method, applied in the field of blasting, can solve the problem of no corresponding calculation method, and achieve the effects of reducing the harmful effects of blasting, reducing construction costs, and controlling the effect of blasting rock.

Inactive Publication Date: 2017-06-27
中交一公局第五工程有限公司
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Problems solved by technology

Different modes of medium and deep hole blasting mining technology provide effective technical approaches and means for the safety technical transformation of open-pit mines under various conditions, with high safety guarantee, good operating conditions, large mining capacity, high production efficiency, long blasting cycle, There are few flying rocks, the distribution and management of blasting equipment is convenient, and the overall benefit is significantly improved. However, because the hardness of the rock and soil in the land is different in different places, there is no corresponding calculation method for the current medium and deep hole blasting technology. , we propose a medium-deep hole blasting calculation method

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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] see Figure 1-7 , the present invention provides a technical solution:

[0031] A medium-deep hole blasting calculation method is characterized in that it comprises the following steps:

[0032] S1. Calculation of the unit consumption of explosives: determine the unit consumption q value of explosives according to the nature of the rock, the number of blasting free surfaces, the type of explosives, and the diameter of the blast hole; the unit consumpti...

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Abstract

The invention discloses a medium-deep hole blasting calculation method. The medium-deep hole blasting calculation method comprises the following steps that S1, explosive unit consumption is calculated; S2, a blast hole diameter is calculated; S3, the hole drilling depth is calculated; S4, the over-drilling depth deltah excess drilling is calculated; S5, the chassis resistance line W bottom is calculated; S6, the hole distance a and the row distance b are calculated; S7, the blockage length is calculated; and S8, the single hole explosive payload Q is calculated. According to the calculation method, theoretical calculation and site situations are combined, rock can be effectively blasted, the construction cost is reduced, and safety is high; and an in-hole subsection interval charging structure is adopted, in-hole and out-hole millisecond delay blasting is carried out, and the blasting rock breaking effect and the blasting vibration harm are well controlled.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a calculation method for medium and deep hole blasting. Background technique [0002] Medium and deep hole blasting technology is currently the main blasting method widely used in mine stripping, mining, water conservancy projects and railway excavation projects. The popularization and application of this technology in the mining of small and medium-sized open-pit mines is to apply medium and deep hole blasting technology, related mining technology and rock drilling and perforation equipment to small and medium-sized open-pit mines, so as to improve the safety production conditions of small and medium-sized open-pit mines and reduce production accidents. According to different topography, production scale and capital investment conditions of open-pit mines, this technology adopts regular steps, light shallow hole drilling steps and medium and deep hole simple steps to carry out ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D1/055F42D3/04
CPCF42D1/00F42D1/055F42D3/04
Inventor 朱石宜
Owner 中交一公局第五工程有限公司
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