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

Marinin,; Dolzhikov, V. V; Isheyskiy, V.A.

doi:10.4028/www.scientific.net/kem.836.124

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…2), the total length of the main crack in the block increases significantly compared to the crack length obtained in the "open" impact layout. This is determined by the fact that the final crack length (lcrk) is the sum of the cumulative "knife" digging depth (l0) and the main crack length (l1), formed by gaseous explosion products [8,11].…”

Section: Block Materialsmentioning

confidence: 99%

Determination of the Conditions of an Effective Functioning of Elongated Cumulative Charges in Processing the Marble Stone

Парамонов

Kovalevskyi

Mysin

2020

KEM

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The study of the effect of Elongated Cumulative Charges (ECC) on rock formations has an important scientific and practical significance for solving a number of process problems in mining practice. The use of charges with a longitudinal concavity for a directional destruction (presplit blasting, “smoothwall” chipping) involves reducing the explosives consumption, preserving the aquifer rock mass from additional explosion-caused cracks, obtaining a smooth contour and reducing the volume of drilling works. It is noted that one of the options that provides the explosion energy redistribution in a destructible medium is the use of elongated cumulative charges with a damping core. Experimental evidences on the dynamic loading of model blocks by an explosion of an elongated cumulative charge with an inert pad of various acoustic stiffness are reported.

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Section: Block Materialsmentioning

confidence: 99%

Determination of the Conditions of an Effective Functioning of Elongated Cumulative Charges in Processing the Marble Stone

Парамонов

Kovalevskyi

Mysin

2020

KEM

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“…These could include grounds of oil refineries and oil-processing plants, as well as tank batteries, fuel and lubricant storage, and other structures [3][4][5]. The operation of such facilities comprises refining, processing, storing, and management of hydrocarbons, and it inevitably entails their loss [6][7][8][9]. According to statistics, the overall loss of solid and liquid hydrocarbons may exceed 2.5 tons and 140.0 tons per year, respectively, when operating tank batteries and filling gas stations [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analyzing Physical-Mechanical and Hydrophysical Properties of Sandy Soils Exposed to Long-Term Hydrocarbon Contamination

2023

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This paper aims to investigate the issue of sandy soil contamination by oil hydrocarbons. Laboratory procedures used to study conditionally pure and contaminated sands include grain-size measurements and evaluation of physical-mechanical and hydrophysical properties. The results of the analysis of sand samples using visual and microscopic studies and sieve analysis show that, unlike in conditionally pure sands, in contaminated samples, the surface of mineral particles is covered by hydrocarbon film. The presence of the latter enables micro- and macroaggregates to be formed. Studies of the physical and hydrophysical properties of sands using a technique with pre-weighed glass containers, as well as a filtering device, SPETSGEO pipes, showed that, in comparison with conditionally pure samples, contaminated specimens of sandy soils have lower densities and higher permeabilities and water yields. Testing the mechanical properties of contaminated sands on the GPP-30 direct shear apparatus using the consolidated dried shear strength method revealed an increase in the angle of internal friction with a decrease in specific adhesion compared to conditionally clean sands.

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“…На горнодобывающих предприятиях широкое распространение получила закладка ЗШО в выработанное пространство [18][19][20]. Этот способ менее предпочтителен из-за низкого экономического эффекта и пролонгированной экологической опасности [21][22][23].…”

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Complex processing of high-carbon ash and slag waste

Chukaeva

Matveeva

Sverchkov

2022

PMI

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The paper considers a current issue of ash and slag processing for the Polyus Aldan JSC, that has accumulated over 1 million tons of this waste. Following the results of the review of Russian and foreign literature, four promising areas of their use were selected: road construction, building materials, reclamation of disturbed lands, and inert aggregates. To assess the possibility of implementing the selected disposal directions, the samples of ash and slag waste of the enterprise were sampled and analyzed. Fuel characteristics, chemical and mineral composition, as well as physico-chemical and mechanical properties of waste were determined. Taking into account the results of complex laboratory studies and the requirements of regulatory documents, each of the selected areas of using ash and slag waste was evaluated. It was found that their disposal by traditional methods has limitations, mainly related to the high content of unburned fuel residues. The high content of combustible substances and the high specific heat of combustion with a relatively low ash content suggested the possibility of thermal disposal of the studied waste. Based on the literature data, the characteristics of the preparation of organic coal-water suspensions based on the studied ash and slag waste were selected. As a result of a series of experiments on their flaring, the expediency of using the obtained fuel at the enterprise under consideration has been proved. The authors note the possibility of using ash obtained after thermal waste disposal in the road construction industry. The prospects for further research of technologies for the preparation and combustion modes of suspension fuel based on ash and slag waste are determined.

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

Cited by 5 publications

References 6 publications

Determination of the Conditions of an Effective Functioning of Elongated Cumulative Charges in Processing the Marble Stone

Determination of the Conditions of an Effective Functioning of Elongated Cumulative Charges in Processing the Marble Stone

Analyzing Physical-Mechanical and Hydrophysical Properties of Sandy Soils Exposed to Long-Term Hydrocarbon Contamination

Complex processing of high-carbon ash and slag waste

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