Improving Quality of Granulometric Composition at Open-Pit Mines of Construction Materials to Reduce Well Diameter

Moldovan, D. V.; Chernobay, V. I.

doi:10.1088/1755-1315/194/8/082024

Cited by 1 publication

(2 citation statements)

References 3 publications

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“…It violates the passport of boreholes drilling, significantly increases the drilling time, leads to excessive energy consumption and, as a result, explosives consumption as well. Due to the short stability of the boreholes, they are loaded immediately after drilling [8][9][10]. This condition creates significant inconvenience, because some equipment is idle, which leads to a significant increase in production costs.…”

Section: Methodsmentioning

confidence: 99%

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Improving the Efficiency of Drilling and Blasting Operations for High Water Cut Conditions

Marinin

Dolzhikov

Isheyskiy

2020

KEM

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The article discusses the experience of drilling and blasting operations in the conditions of high water cut of the rock massif, it also presents practical experience in modeling and forecasting water inflows into workings. By the example of the Koashvinskoe deposit, the problems of work in conditions of high water cut of the rock mass leading to the collapse and silting of drilled boreholes are considered. The article presents calculations showing the effectiveness of the drainage systems for lowering the groundwater level of a prepared rock mass section. The paper provides a rationale for the optimal mass of bottom charges for the preparation of drains in the rock mass, depending on the water saturation of the mass and the grid of drilled boreholes.

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Section: Methodsmentioning

confidence: 99%

“…To estimate the rate of de-watering in the rock mass, we adopted the technique from [9]. According to this method, we design an explosive block with the number of boreholes (N), each borehole is assigned a coordinate (x, y), and water-reducing boreholes are placed on the grid and have corresponding coordinates (xi, yi).…”

Section: Water-reduction Modelingmentioning

confidence: 99%