A method for plugging blastholes in underground blasting engineering and blasting mud injection machine

Abstract

The invention relates to a stemming injection machine, which comprises a water storage device, a water outlet tube, a carriage, a stemming agitator, a stemming outlet tube and a helical injection head; the stemming injection machine also comprises a water pump for pumping the water of the water storage device into the stemming agitator; the stemming injection machine also comprises an automatic water control device for controlling the quantity of water added into the stemming agitator; the stemming injection machine also comprises a hydraulic stemming supply pump. A blocking method for blastholes of underground blasting projects includes: (Step 1) stemming material is prepared; (Step 2) the stemming material is loaded into the stemming injection machine; (Step 3) the automatic water control device controls the weight ratio of the stemming material to water at 1:0.12 to 0.13, and the stemming material and the water are mixed, so that homogeneous stemming is obtained. The invention has the following advantages: the quality of stemming and the efficiency of blasthole blockage are increased, staffing is saved, labor condition is improved, meanwhile, the safety of construction is ensured, the quality of blasting is greatly increased, the cost of blasting is reduced, and thereby good economic benefit is obtained.

Description

technical field [0001] The invention relates to a method for plugging blastholes in underground blasting engineering and a blasting machine. Background technique [0002] In geotechnical engineering blasting, blast hole plugging is an important link in drilling and blasting construction, and it is also one of the important factors affecting the blasting effect. Both theory and practice have shown that good blast hole plugging can prolong the duration of blast hole pressure, improve the utilization rate of explosives and effectively reduce blasting noise. In open-air blasting, blastholes are usually blocked with some crushed sand and mortar. In underground blasting, if the blastholes are directed upwards, it is very troublesome to block them. Generally, waste paper is used for symbolic filling. There is no blocking effect; when some horizontal blastholes are blasted, sometimes special blasting mud is used to block, which is troublesome to operate and expensive, so undergroun...

AI Technical Summary

Problems solved by technology

In open-air blasting, blastholes are usually blocked by filling some crushed sand and mortar. In underground blasting, if the blastholes are directed upwards, it is very troublesome to block them. Generally, waste paper is used for symbolic filling. There is no blocking effect; when some horizontal blastholes are blasted, sometimes special blasting mud is used for blocking, which is troublesome to operate and high in cost. Therefore, underground blasting projects often do not block at all

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