2017
DOI: 10.1088/1757-899x/268/1/012005
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The possibility of increasing the efficiency of accessible coal deposits by optimizing dimensions of protective pillars or the scope of exploitation

Abstract: Abstract.One of the ways to protect objects exposed to the influences of mining exploitation is establishing protective pillars for them. Properly determined pillar provides effective protection of the object for which it was established. Determining correct dimensions of a pillar requires taking into account contradictory requirements. Protection measures against the excessive influences of mining exploitation require designing the largest possible pillars, whereas economic requirements suggest a maximum redu… Show more

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“…Advanced periodic deep hole blasting is carried out during the normal mining of the mining panel, and every three blast holes are arranged in a group of fan-shaped ones. e blast hole parameters [21,22] are designed according to the geological conditions of the working area and blasting requirements. e monitoring mainly measures the advanced abutment stress.…”
Section: Blasting Plan and Effect Monitoringmentioning
confidence: 99%
“…Advanced periodic deep hole blasting is carried out during the normal mining of the mining panel, and every three blast holes are arranged in a group of fan-shaped ones. e blast hole parameters [21,22] are designed according to the geological conditions of the working area and blasting requirements. e monitoring mainly measures the advanced abutment stress.…”
Section: Blasting Plan and Effect Monitoringmentioning
confidence: 99%