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Small-aperture shallow hole filling method for model blasting experiment

A small-diameter, shallow-hole technology, applied in the field of blasting tests, can solve problems such as the difficulty of filling small-diameter blastholes, the long time for packing materials to dry quickly, and the lack of model test data, so as to improve blasting effects and reduce explosions. risk, and the effect of improving the packing quality

Active Publication Date: 2021-01-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Filling the blastholes with small apertures is an extremely difficult problem. If the quality of the filling is not good, it is easy to cause the blasting, which will waste the energy of the explosives and make the blasting effect poor. The rate of large rocks is high and there are holes It will be severely damaged, so that accurate model experiment data cannot be obtained
[0004] Due to the small hole diameter and the small amount of filling material poured each time, the filling material takes a long time to dry quickly, so the filling time of the small blast hole is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as figure 1 As shown, a model blasting experiment small hole shallow hole filling method, the specific steps are as follows:

[0021] (1) Mix the fast-sticking powder, water and liquid binder evenly to obtain the packing slurry; the mass ratio of the fast-sticking powder, water and liquid binder in the packing slurry is 10:4:1; this model experiment The selected liquid adhesive is commercially available glue, and the type of commercially available glue is sBS resin glue;

[0022] (2) Clean up the small-diameter blastholes for model testing, place the explosives at the bottom of the small-diameter blastholes according to the design requirements, add part of the filling slurry into the small-aperture blastholes, then add brown silk and stir, and then repeatedly add the filling slurry material and brown silk, after the filling is completed, wait for the filling slurry to solidify to complete the filling of the small-aperture shallow hole in the model blastin...

Embodiment 2

[0025] Embodiment 2: as figure 1 As shown, a model blasting experiment small hole shallow hole filling method, the specific steps are as follows:

[0026] (1) Mix the fast-sticking powder, water and liquid binder evenly to obtain the packing slurry; the mass ratio of the fast-sticking powder, water and liquid binder in the packing slurry is 10:6:2; this model experiment The selected liquid adhesive is commercially available glue, and the type of commercially available glue is sBS resin glue;

[0027] (2) Clean up the small-diameter blastholes for model testing, place the explosives at the bottom of the small-diameter blastholes according to the design requirements, add part of the filling slurry into the small-aperture blastholes, then add brown silk and stir, and then repeatedly add the filling slurry material and brown silk, after the filling is completed, wait for the filling slurry to solidify to complete the filling of the small-aperture shallow hole in the model blastin...

Embodiment 3

[0030] Embodiment 3: as figure 1 As shown, through the model poured in the Dahongshan Copper Mine, a model similar to the principle but reduced in size is made for experimental research. According to the experimental results converted to the principle, the experimental error can be reduced and the accuracy of the model experimental data can be improved; a The filling method of small aperture and shallow hole in model blasting experiment, the specific steps are as follows:

[0031] (1) Mix the fast-sticking powder, water and liquid binder evenly to obtain the packing slurry; the mass ratio of the fast-sticking powder, water and liquid binder in the packing slurry is 10:6:1; this model experiment chooses The liquid adhesive is commercially available glue, and the type of commercially available glue is sBS resin glue;

[0032] (2) Clean up the small-diameter blastholes for model testing, place the explosives at the bottom of the small-diameter blastholes according to the design ...

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Abstract

The invention relates to a small-aperture shallow hole filling method for a model blasting experiment, and belongs to the technical field of blasting experiments. The small-aperture shallow hole filling method comprises the following steps that quick-sticking powder, water and a liquid adhesive are uniformly mixed to obtain filling slurry; and a small-aperture blast hole for the model experiment is cleared, explosive is placed at the bottom of the small-aperture blast hole according to the design requirement, the filling slurry is added into the small-aperture blast hole under the stirring condition, meanwhile, palm fibers are added, and the filling slurry is solidified to finish filling of the small-aperture shallow hole for the model blasting experiment. Compared with conventional filling, the model experiment blast hole filling is beneficial to saving the filling time, improving the filling efficiency, enhancing the strength of a filling material, avoiding punching of the blast hole, greatly improving the blasting effect, reducing experiment errors and improving the accuracy of model experiment data.

Description

technical field [0001] The invention relates to a small-diameter shallow hole filling method for model blasting experiments, which belongs to the technical field of blasting experiments. Background technique [0002] Model experiment is a very important method in scientific research. Model experiment is to make a model similar to the principle but reduced in size for experimental research based on the principle of similarity, and convert the experimental results to the principle to predict the flow phenomenon that will occur in the prototype. , the focus of the model experiment is to reproduce the physical nature of the flow phenomenon. Only when the physical essence of the flow phenomenon in the model experiment and the prototype is guaranteed to be the same, the model experiment is valuable. [0003] Filling the blastholes with small apertures is an extremely difficult problem. If the quality of the filling is not good, it is easy to cause the blasting, which will waste th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/18F42D3/00
CPCF42D1/18F42D3/00
Inventor 李祥龙赵泽虎张智宇王建国黄永辉杨长辉左庭李强
Owner KUNMING UNIV OF SCI & TECH
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