Investigation of the influence of the chemical composition of mine waters for the manufacture of a borehole from hydrogel during road heading operations by drilling and blasting method

Аннотация

One of the factors determining the conditions and the effectiveness of the explosion of borehole charges is the internal borehole stemming. Its size and quality largely determine the blast hole efficiency ratio (BER), the uniformity of crushing of the array, as well as the amount of dust and toxic gases entering the mine atmosphere during an explosion.