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Drill-hole cleaning free blasting charge structure adopting VCR mining method and construction method of drill-hole cleaning free blasting charge structure

A construction method and technology of mining method, applied in the field of mining and blasting, can solve the problems of blasting blockage in the latter section, and achieve the effects of reducing the concentration effect, ensuring the charging work, and eliminating the phenomenon of hole blocking.

Active Publication Date: 2019-06-11
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a VCR mining method without sweeping blasting charge structure and its construction method in view of the problem that the back-stage blastholes in the existing VCR mining method are easily blocked by the front-stage blasting

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  • Drill-hole cleaning free blasting charge structure adopting VCR mining method and construction method of drill-hole cleaning free blasting charge structure
  • Drill-hole cleaning free blasting charge structure adopting VCR mining method and construction method of drill-hole cleaning free blasting charge structure

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Embodiment

[0032] see figure 1 , the charge structure in the illustration is a preferred solution of the present invention, which is aimed at the sweep-free blasting charge structure of the VCR mining method with a full pass down to the vertical blast hole, and can be applied to a blast hole with a diameter of 90- 250mm downward deep hole. Specifically, it includes several layers of explosives 5 packed in layers within the blasting section of the blasthole 100, and all the explosives 5 are drawn out to the outside of the blasthole through the blasting assembly to connect to the blasting network. Wherein, the explosives are positioned by positioning blocks 6 at the bottom of the blasting section of the blast hole 100 , and each layer of explosives 5 is spaced apart by granular fillers 3 . The bottom explosives 5 and the positioning block 6 are separated by particle fillers 3 , and the top layer of explosives 5 is filled with particle fillers 3 in the blast hole, and the layer of particle...

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Abstract

The invention discloses a drill-hole cleaning free blasting charge structure adopting a VCR mining method and a construction method of the drill-hole cleaning free blasting charge structure. A blasting segment of a blasthole is filled with multiple layers of explosives in a layered manner. The explosives are spaced by particle filler. The explosives are guided out of the blasthole through a detonation assembly to be connected with a detonation network. The length of the explosive at the topmost layer is smaller than the length of the rest of layers of explosives, the position, above the explosive at the topmost layer, of the blasthole is filled with particle filler, and the position, above the particle filler, of the blasthole is filled with a water column. The reasonable and scientific charge structure is adopted, the combined blocking structure of a small quantity of explosives, particle blockage and the water column is adopted on the upper portion of the explosive on the top layer,the phenomenon of hole blocking of the top non-blast segment is effectively eradicated fundamentally, the additional economic cost caused by the drill-hole cleaning workloads due to blasting hole blocking is saved, the production construction period is prevented from being delayed, and the negative effects caused by large-charge-mass blasting in the VCR mining method are greatly reduced.

Description

technical field [0001] The invention belongs to mining blasting technology, in particular to a VCR mining method no-sweep hole blasting charge structure and a construction method thereof. Background technique [0002] Mineral resources are one of the basic guarantees for the process of social industrialization. As the grade of existing mineral resources and mining conditions continue to deteriorate, mining has gradually shifted to high-efficiency, low-cost, and large-scale technology. The mine chamber method (VCR mining method) in the vertical deep hole falling stage is an advanced mining method applied after continuous practice, summary, development and improvement. Due to its remarkable features of high efficiency, safety and low cost, the VCR mining method is adopted by more and more mines. [0003] This mining method first drills all vertically downward parallel blastholes in the upper rock drilling chamber, and divides them into the trough area and the side collapse ar...

Claims

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Application Information

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IPC IPC(8): F42D3/04F42D1/00
Inventor 史秀志苟永刚霍晓锋邱贤阳万士义陈佳杨福波柯武阳陈资南
Owner CENT SOUTH UNIV
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