Method for plugging the bottom of vertical through holes in mine blasting
A technology of vertical through holes and plugging holes, which is applied in the field of mine blasting, and can solve problems such as the inability to guarantee the plugging effect at the bottom of the hole, adverse effects on the blasting effect, and loose plugging connections, achieving significant economic benefits and reliable plugging effects , Guarantee the effect of quality
Active Publication Date: 2021-11-16
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology
This method of plugging holes is prone to loose plugging connections, and the plugging objects get stuck in the middle and are difficult to remove after being stuck, so that the plugging effect at the bottom of the hole cannot be guaranteed, which will have an adverse effect on the blasting effect
Method used
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[0029] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. As a part of this specification, the principles of the present invention will be described through examples. Other aspects, features and advantages of the present invention will become clear through the detailed description. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.
[0030] Such as Figure 1 to Figure 2 Shown, the method one at the bottom of the mine blasting vertical through-hole plugging hole of the present invention comprises the steps:
[0031] Step 1: Determine the length of the plugging rope (cable, hose, soft wire) at the bottom of the hole according to the designed length of the plugging hole bottom plus the surplus amount, and tie one end of it to a piece slightly larger than the through hole. Radius blocking stones, the other end forms a sleeve; ...
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The invention discloses a method for plugging the bottom of a vertical through hole in mine blasting. The steps are as follows: one end of a plugging rope at the bottom of the hole is tied to a plugging stone with a size slightly larger than the radius of the through hole, and the other end is formed into a Sleeve; put one end of the rope that is longer than twice the depth of the through hole into the sleeve of the blocking rope, grab the end of the rope, and then put the blocking stone into the through hole During the process, continue to lower the rope-like object along the through hole, and lower the bundled blocking stones close to the bottom of the through hole; first put 1 to 3 stones with a size about the radius of the through hole into the hole from the upper space, Then backfill the gravel, continue to backfill and tamp the gravel to the designed plugging length, and complete the plugging of the bottom of the through hole. The method for plugging the bottom of the vertical through hole in mine blasting has the advantages of significant economic benefit, simple and quick operation, reliable plugging effect, and ensures the quality of ore falling by blasting.
Description
technical field [0001] The invention belongs to the technical field of mine blasting, in particular to a method for plugging the bottom of a vertical through hole in mine blasting. Background technique [0002] In the underground mining of thick ore bodies, the mining method of horizontal layered filling is adopted, and the mining efficiency is low and the cost is high. In order to improve the mining efficiency, it is an effective way to adopt the vertical deep hole spherical charge backward blasting method (V.C.R method for short). During the construction process of the V.C.R method, when blasting the through-holes that open up the upper and lower spaces, it is a key link to quickly and effectively seal the bottom of the through-hole. After a wooden wedge is put into the hole to the position of blocking the hole with a rope, another wooden wedge is hung to make contact with the first wooden wedge, and the plastic rope is tightened so that the two wooden wedges are wedged t...
Claims
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IPC IPC(8): F42D1/08F42D3/04
CPCF42D1/08F42D3/04
Inventor 郭宝义张华
Owner LIAONING TECHNICAL UNIVERSITY