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Journal articles on the topic 'Blasting Mining engineering'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Dai, Shu Lin, and Yan Cheng. "The Study about Hole Distance Calculating Method of Wide-Space Bench Blasting." Advanced Materials Research 378-379 (October 2011): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.3.

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The technology of wide-space bench blasting has been more and more applied to blasting engineerings of conservancy, hydropower, mining, highway and railway, but at the stage the design of hole distance of wide-space bench blasting is mainly used analogy method and site testing method, there is no precise calculation formula for reference. According to this situation, this paper puts forward the calculation formula of hole distance, which is based on the analysis of the physical process of rock destroyed by blasting, and combined with engineering examples of wide-space blasting at home and abro

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2

Zhang, Zhi Yu, Long Fa Luan, Ji Yao, Jian Bin Xie, and Xiang Long Li. "Study on the Influence of Stability for Higher Precipitous Open Pit Slope under Mining Blasting." Advanced Materials Research 255-260 (May 2011): 3822–26. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3822.

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Based on the hydrological, geologies and slope features of Jianshan phosphate mine in Yunnan province, the geomechanics model of slope was established. Then the static stability of different elevations in mining section was studied by using methods such as the rigid body limit equilibrium method, finite element method, continuum large deformation Lagrange element method. According to the supervise data of the mining blasting, the dynamic response of the slope in blasting was studied by continuum large deformation Lagrange element method, and some suggestions were proposed for following mining

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3

Gong, Peng, Yongheng Chen, Zhanguo Ma, and Shixing Cheng. "Study on Stress Relief of Hard Roof Based on Presplitting and Deep Hole Blasting." Advances in Civil Engineering 2020 (October 26, 2020): 1–12. http://dx.doi.org/10.1155/2020/8842818.

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For the problem that the hard roof causes wider end-mining coal pillar, and the roadway is greatly affected by mining, this paper took Shanxi Luning Coal Mine as the engineering background; based on the stress distribution characteristics of the coal pillar, the calculation method of the limit end-mining coal pillar size was given; considering the formation conditions and transmission forms of the advanced abutment stress, a method combining presplitting and deep hole blasting was proposed to weaken the advanced abutment stress. The numerical simulation was used to analyze the stress distribut

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4

Kazanin, O. I., M. A. Marinin, and A. M. Blinov. "Professional Retraining in the Staffing System for the Mining Enterprises." Occupational Safety in Industry, no. 7 (July 2021): 79–84. http://dx.doi.org/10.24000/0409-2961-2021-7-79-84.

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The issues are considered related to providing mining enterprises with the engineering personnel capable of managing mining and blasting operations. At present, not all the mining enterprises have a full staff of specialists and managers who are legally entitled to manage mining and blasting operations. Some employees who previously had such a right, after changes in the legal framework, ceased to meet the new requirements. The analysis is presented concerning the competencies required to perform these production functions, as well as educational programs that allow acquiring these competencie

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5

Yang, J. X., and C. Y. Liu. "Experimental Study and Engineering Practice of Pressured Water Coupling Blasting." Shock and Vibration 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/5484598.

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Overburden strata movement in large space stope is the major reason that induces the appearance of strong mining pressure. Presplitting blasting for hard coal rocks is crucial for the prevention and control of strong pressure in stope. In this study, pressured water coupling blasting technique was proposed. The process and effect of blasting were analyzed by orthogonal test and field practice. Results showed that the presence of pressure-bearing water and explosive cartridges in the drill are the main influence factors of the blasting effect of cement test block. The high load-transmitting per

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6

Zhang, Wei, Dong Sheng Zhang, and Peng Shao. "New Technology of Efficient Blasting Rock for Large Section Rock Roadway Drivage in Deep Shaft with Complicated Conditions." Applied Mechanics and Materials 94-96 (September 2011): 1766–70. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1766.

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Based on the different failure mechanism for shallow and deep rock mass, combined with the test result of ground stress and difficulties of blasting rock in Xinwen mining area, used mines rock mass mechanics and modern blasting theory and actively carried out technical reform, the new forming control technology of directional fracture blasting and control technology of multi-directional fusion blasting and efficient blasting technology of compound cut had been adopted, which produced a set of new efficient blasting rock technology for large section rock roadway drivage in deep shaft with compl

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7

Xu, Shida, Yuanhui Li, Jianpo Liu, and Fengpeng Zhang. "Optimization of blasting parameters for an underground mine through prediction of blasting vibration." Journal of Vibration and Control 25, no. 9 (2019): 1585–95. http://dx.doi.org/10.1177/1077546319829938.

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Drilling and blasting remains the primary method of rock fragmentation in metal mining. However, blasting vibration can adversely affect the stability of the rock. Therefore, prediction of blasting vibration is essential in the mining industry. This paper proposes a combination of principal component analysis (PCA) and support vector machine (SVM) model to predict blasting vibration. Here, PCA was used to simplify the inputs of the SVM. Relative location of the monitoring point to blasting source, total charge, maximum charge per delay, number of delays, burden, spacing, height, and horizontal

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8

Huang, Dan, Xianyang Qiu, Xiuzhi Shi, Yonggang Gou, and Jian Zhou. "Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining." Shock and Vibration 2019 (August 1, 2019): 1–13. http://dx.doi.org/10.1155/2019/5843516.

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It is essential to control the damage to the surrounding rock and engineering structures in the process of cut blasting with a single free surface in underground mining. To reduce vibration induced by cut blasting, this paper proposes short-delay cut blasting, in which blast holes that are near each other are sequentially initiated with short-delay times. Experimental tests of cut blasting were conducted in a roadway in the Shaxi copper mine to compare the peak particle velocity (PPV) and frequency characteristics of simultaneous blasting and short-delay blasting. Numerical modelling was then

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9

Jing, Hong-di, Yuan-hui Li, and Kun-meng Li. "Study on the Deformation Mechanism of Soft Rock Roadway under Blasting Disturbance in Baoguo Iron Mine." Shock and Vibration 2018 (August 1, 2018): 1–12. http://dx.doi.org/10.1155/2018/4349810.

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In order to study the deformation mechanism of soft rock roadway in underground mines, it is necessary not only to study the influence of the dynamic disturbance caused by the cyclic mining blasting vibration on the stability of the soft rock roadway but also to study the degradation of the roadway surrounding rock itself and other factors. The paper presented a synthetic research system to investigate the factors that influence roadway rock structure deterioration in Baoguo Iron Mine. Firstly, the stability of rock mass was analyzed from the perspective of the physical and structural characte

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10

Ercins, Serdar, and Cem Şensöğüt. "Performance Analysis of the Explosion Applications Realized with Electronic Ignition System at Different Times in the Same Field." International Journal of Economic and Environmental Geology 11, no. 1 (2020): 17–23. http://dx.doi.org/10.46660/ijeeg.vol11.iss1.2020.406.

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In the modern world, the mining and construction sectors are developing rapidly and the need for engineering structures and substructures is increasing day by day. The quarries have been brought to an important place in the world within the scope of mining activities while the products needed by these structures are obtained especially from the quarries. Quarries are generally operated by forming benches according to the open pit mining method. In this production method, considering the state of geological structures in the field, the rocks (limestone, basalt, etc.) loosened by drilling and bl

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11

Ercins, Serdar, and Cem Şensöğüt. "Performance Analysis of the Explosion Applications Realized with Electronic Ignition System at Different Times in the Same Field." International Journal of Economic and Environmental Geology 11, no. 1 (2020): 17–23. http://dx.doi.org/10.46660/ojs.v11i1.406.

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In the modern world, the mining and construction sectors are developing rapidly and the need for engineering structures and substructures is increasing day by day. The quarries have been brought to an important place in the world within the scope of mining activities while the products needed by these structures are obtained especially from the quarries. Quarries are generally operated by forming benches according to the open pit mining method. In this production method, considering the state of geological structures in the field, the rocks (limestone, basalt, etc.) loosened by drilling and bl

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12

Wang, Xin Sheng, and Tao Rong. "Application of Safety Appraisement of Blasting Operation in Coal Face of Blasting Mining." Advanced Materials Research 524-527 (May 2012): 261–65. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.261.

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The coal face of blasting mine in underground coal mine is a very complicated system of disaster environment, the spatio temporal limit increases the accident probability of blasting operations. So the safety appraisement method of safety engineering was applied. Through marking the potential tendency of the serious injury and the control level, the serious injury possibility of this operation is analyzed, and the safety technical measures and management measures to improve the safety in the implemention are put forward.

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13

Egorov, V. V., A. N. Volokitin, N. V. Ugolnikov, and A. V. Sokolovsky. "Justification of parameters and technology of drilling and blasting operations to ensure the required lumpiness." Mining Industry Journal (Gornay Promishlennost), no. 3/2021 (July 20, 2021): 110–15. http://dx.doi.org/10.30686/1609-9192-2021-3-110-115.

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The practice of mining and blasting operations both during the development of a mineral deposits, and at the mine design stage, often involves the question of selecting the technology options and operation parameters. Virtually all recommendations for selecting the best production option are based on minimizing the total costs for the entire technological cycle of mining activities. In most cases the optimal technology and parameters of mining and blasting operations depend on the commercial, maximum permissible and average size of the blasted rock mass, which are determined by the type and ca

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14

Zhang, Zhi Yu, Long Fa Luan, and Jian Bin Xie. "Numerical Simulation of Structure Dynamic Response for Civil Architecture under Mining Blasting Vibration." Advanced Materials Research 255-260 (May 2011): 3817–21. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3817.

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According to the geological conditions of mine and mine’s surrounding construction, the geological mechanical model of explosion area and the structure model of surrounding civil architecture were established. Based on the monitoring blasting vibration result of mining explosion process, the dynamic response character and structural stress of surrounding civil architecture which have been caused by blasting vibration of mining were studied by means of the Finite Element Method (FEM) and the method of fast Lagrangian analysis of continua three dimensions (FLAC 3D). The results show that calcula

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15

Adushkin, V. V., S. P. Solov’ev, A. A. Spivak, and V. M. Khazins. "Open Pit Mining with Blasting: GeoEcological Aftermath." Journal of Mining Science 56, no. 2 (2020): 309–21. http://dx.doi.org/10.1134/s1062739120026794.

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16

Lan, Tianwei, Chaojun Fan, Jun Han, Hongwei Zhang, and Jiawei Sun. "Controlling Mechanism of Rock Burst by CO2 Fracturing Blasting Based on Rock Burst System." Shock and Vibration 2020 (August 27, 2020): 1–9. http://dx.doi.org/10.1155/2020/8876905.

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Rock burst induced by mining is one of the most serious dynamic disasters in the process of coal mining. The mechanism of a rock burst is similar to that of a natural earthquake. It is difficult to accurately predict the “time, space, and strength” of rock burst, but the possibility of rock burst can be predicted based on the results of microseismic monitoring. In this paper, the rock burst system under the tectonic stress field is established based on the practice of coal mining and the result of mine ground crustal stress measurement. According to the magnitude of microseismic monitoring, th

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17

Zhang, Quan, Jiong Wang, Shan Guo, et al. "Shaped Charge Hydraulic Blasting: An Environmental, Safe, and Economical Method of Directional Roof Cutting." Geofluids 2021 (March 13, 2021): 1–20. http://dx.doi.org/10.1155/2021/5511081.

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Shaped charge blasting (SCB)—a directional fracture blasting technology—has the disadvantages of low safety, harmful gas, and dust emissions. This study proposes a new type of directional rock-breaking technology called shaped charge hydraulic blasting (SCHB) that uses water as the blasting medium instead of air. To verify the effectiveness of the new method, we performed a theoretical analysis. Twelve groups of on-site directional roof-cutting tests were carried out on SCB and SCHB for comparison in a coal mine. The results showed that, although both blasting methods achieved the goal of dire

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18

Zhang, Fengpeng, Qiqi Hao, Xiulong Wang, and Zhaoguo Qiu. "Design Method for Specific Charge in Deep Mining considering Influence of In Situ Stress." Advances in Civil Engineering 2021 (August 19, 2021): 1–9. http://dx.doi.org/10.1155/2021/8864723.

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In situ stress has a large influence on blasts in deep mines and should be considered in blasting design. In this study, explosion crater tests were conducted to investigate the variation of specific charges under different stress loading conditions. It was revealed that rock blasting under high stress is different from that under low stress. A correction coefficient for specific charge was defined to consider the influence of in situ stress on blasting. A quantitative relation between the correction coefficient, stress-to-strength ratio, and lateral stress coefficient was presented. Based on

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19

Wu, Yabin, Jianhua Hu, Chengyu Xie, and Dongping Shi. "Case Study on the Stability Control of Broken Surrounding Rock in Roadway Excavation on the Edge of a Collapsed Stope Area." Advances in Civil Engineering 2021 (September 11, 2021): 1–14. http://dx.doi.org/10.1155/2021/8658847.

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Predicting and controlling the collapse of surrounding rock (especially broken rock masses) in underground chambers is an important topic in mining and geotechnical engineering. Based on an example, this paper introduces a case study of surrounding rock stability control technology in stope mining around abandoned areas. Based on on-site coring, mechanical properties of rock samples, and on-site grouting reinforcement technology, the TRT6000 advanced geological prediction system was used to predict the stability status of the surrounding rock of the underground chamber. AUTODYNA software was u

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20

Li, Wei, and Ren Shu Yang. "Application of Loose Blasting in Fully-Mechanized Coal Face Crossing Faults." Advanced Materials Research 838-841 (November 2013): 1880–83. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.1880.

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Loose blasting technology is applied to the problem of fully mechanized coal face passing through fault. The paper gets safe and practical loose blasting parameters and blasting process, achieves no re-open-off cut for the fully mechanized coal face, reduces loss of coal pillars for faults and improves the coal recovery rate. At last, the goal of high yield, steady yield, and increasing yield for fully mechanized mining face is realized.

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21

Li, Jin Kui, De Jun Wang, and Yue Bo Fan. "Blasting Vibration Damping Design and Effect Analysis in Subway Shaft Construction." Applied Mechanics and Materials 501-504 (January 2014): 1846–49. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1846.

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Mining method inevitably causes a certain degree of damage on the shaft and surrounding rock, and severe vibration can effect on the ground buildings. The Sectional blasting design was discussed on the base of stratigraphic features, field condition and the nearest distance from surrounding buildings to Cuchun Shaft of Dalian Subway 202 construction which is taken as blasting safety control distance in this paper. The control blasting technology with short footage, weak blasting was put forward to reducing blasting vibration. The ground vibration monitoring was carried through during shaft bla

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22

Cunningham, C. V. B. "Role of blasting instrumentation in promoting mining profitability." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 29, no. 4 (1992): 243. http://dx.doi.org/10.1016/0148-9062(92)90817-j.

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23

Chen, Baobao, and Changyou Liu. "Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting." Advances in Civil Engineering 2018 (October 17, 2018): 1–15. http://dx.doi.org/10.1155/2018/9763137.

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For the thick hard roof (THR) in Datong mining area, mining operations often led to large-scale hanging-roof and frequent and strong strata behavior, threatening mining safety seriously. Based on the instability mechanism, the fracture model for THR was established, including rock blocks articulation and combined cantilever beam, and the limit initial and periodic intervals of THR were determined to be 36.0 m and 8.0 m, respectively. The study proposed the deep-hole presplitting blasting (DPB) for weakening THR for mitigating strong strata behaviors. Blasting-induced fracture characteristics w

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24

Jug, Jasmin, and Kristijan Grabar. "Methods for reducing the environmental impact of rock mass excavation." Environmental engineering 7, no. 1 (2020): 29–38. http://dx.doi.org/10.37023/ee.7.1.4.

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Many engineering projects and interventions have negative effects on the environment. Rock excavation in civil engineering, either in mining or in construction, often is unthinkable without the use of explosive. However, blasting can have extensive adverse environmental impacts, like vibrations, noise, dust and chemical contamination. Therefore, it is better to avoid blasting activities near urban areas, protected animal habitats, sensitive historic buildings, water protection zones, pipelines, etc. While mechanical excavation is often longer lasting and more expensive, in some cases it may ad

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Hussan, Bolatkhan, Daulet Takhanov, Sergey Kuzmin, and Sharabidin Abdibaitov. "Research into influence of drilling-and-blasting operations on the stability of the Kusmuryn open-pit sides in the Republic of Kazakhstan." Mining of Mineral Deposits 15, no. 3 (2021): 130–36. http://dx.doi.org/10.33271/mining15.03.130.

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Purpose. Research into influence of drilling-and-blasting operations on the nature of deformation in near-side masses of the design open-pit contours and assessing the seismic impact of blasting operations, which are the basis for development of recommendations on the rational parameters of drilling-and-blasting operations. Methods. The influence of drilling-and-blasting operations at the limiting contour of the Kusmuryn field is studied using the analysis of the mining-and-geological conditions and tectonics of the rocks constituing the field, in-situ surveying the state of the open-pit sides

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26

Gao, Qidong, Zhendong Leng, Ruipeng Yang, et al. "Mathematical and Mechanical Analysis of the Effect of Detonator Location and Its Improvement in Bench Blasting." Mathematical Problems in Engineering 2020 (June 4, 2020): 1–14. http://dx.doi.org/10.1155/2020/6058086.

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The outcome of bench blasting significantly affects the downstream operations in mining. In bench blasting, the explosives charged in blastholes are generally cylindrically shaped and fired by the in-hole detonator. As the detonator determines the propagation of the detonation wave in the cylindrical charge, the effect of detonator location can never be ignored. In this paper, the mathematics and mechanics of the effect of detonator location was analyzed from the view of the distribution of explosion energy and blast stress field of a cylindrical charge. Then, a field blasting experiment and t

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27

Ousmanou, Safianou, Ndapeh Nd Blaise, and Fozing Eric Martial. "Comparison of the existing and calculated blast design parameters for the rock mass conditions at Bamesso-Latet rock quarry." Journal of Nepal Geological Society 60 (September 16, 2020): 131–37. http://dx.doi.org/10.3126/jngs.v60i0.31273.

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Blasting is the most cost effective methodology to break rock for mining engineering applications. A good production blast will break only the rock that is needed to be removed, leaving the host rock with minimal damage. Accurate measurement of blast, fragmentation is important in mining and quarrying operations, in monitoring and optimizing their design. Currently, there are several methods available to predict damage due to blasting. The accuracy of many of these methods is questionable, and in most cases, the methodologies over predict the results. This paper presents a practical method (i.

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Zhang, Zong-Xian, Li Yuan Chi, and Qingbin Zhang. "Effect of Specimen Placement on Model Rock Blasting." Rock Mechanics and Rock Engineering 54, no. 8 (2021): 3945–60. http://dx.doi.org/10.1007/s00603-021-02480-5.

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AbstractSmall-scale model blasting plays an important role in understanding mechanism of rock fragmentation by blasting and improving blast technology in rock and mining engineering. Because a specimen (or model) often needs to be placed on either a ground or another material in model blasting, an additional interface appears between the specimen and the ground (or material), compared with an engineering blast that does not have such an interface. In this paper, four model blasts with high-speed photography were presented. The results showed that: (1) as the impedance of a rock specimen was sm

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Xie, Zhen Hua, Zheng Lan Yuan, and Yu Zhang. "Numerical Simulation on Blasting Fume Diffusion in Blind Roadway with FLUENT." Advanced Materials Research 663 (February 2013): 655–60. http://dx.doi.org/10.4028/www.scientific.net/amr.663.655.

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Aiming at the generation of blasting fume in underground blind roadway, numerical simulation method was taken to obtain the diffusion law of the blasting fume. In accordance with the actual situation in Shachang mining area of Shouyun iron mine, the physical model and mathematical model were set up, computational grids were divided, and the boundary condition was established. The diffusion law of blasting fume and the completion time under different explosives dosage were simulated by Fluent. The laws of blasting fume diffusion and diffusion time changing with the amount of explosive in local

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30

Li, Baolin, Nan Li, Enyuan Wang, et al. "Discriminant Model of Coal Mining Microseismic and Blasting Signals Based on Waveform Characteristics." Shock and Vibration 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/6059239.

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Generally, there are two important types of microseismic (MS) signals caused by mining and blasting activities at coal mines. The waveform characteristics of MS signals using FFT, STA/LTA method, and envelope analysis were studied to distinguish these two types of MS signals. The main results are as follows: the dominant frequency and duration of two types of signals are significantly different. The following peak envelope curves of two types of MS signals fit a power function. The power exponent was obtained to describe the attenuated speed of the MS signals. The attenuation of the coal minin

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31

Gan, Deqing, Xi Yang, Yunpeng Zhang, and Xinyu Wei. "Stability Analysis of Underground Multicavities in Bench Blasting Vibration." Mathematical Problems in Engineering 2019 (January 2, 2019): 1–10. http://dx.doi.org/10.1155/2019/4014761.

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Underground cavities formed by underground mining activities are a potential threat to open-pit mining activities. Longtan Village Iron Mine is located in Chengde city, Hebei province, China. The open-pit mining and underground mining of Longtan Village Iron Mine are simultaneously performed. Cavities will remain after underground mining. When mining is performed on the top of the underground cavities in the open pit, concerns arise regarding the closest distance to prevent the collapse of the cavities. (The closest distance is the safe distance between the explosive and the cavities. If the d

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Tikhonov, V. A., G. A. Dudnik, S. Yu Panfilov, and V. V. Zhulikov. "Specific Features of Blasting Operations in Mining Minerals in Northern and Arctic Regions of Russia." Mining Industry Journal (Gornay Promishlennost), no. 2/2021 (May 10, 2021): 102–6. http://dx.doi.org/10.30686/1609-9192-2021-2-102-106.

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A priority task for facilitating the development of the Arctic zone of the Russian Federation is to design new blasting technologies to be efficiently used in extremely difficult climatic, mining and geological conditions at remote operations. This is further motivated by the fact that up to 40% of Russia's gold reserves, 60–90% of its natural gas resources and 100% of its primary diamond deposits are located in the Arctic zone. The article analyses the problems of blasting operations while developing deposits in the Arctic zone. The main formulations of ordinary explosives are reviewed that a

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Urošević, Katarina, Zoran Gligorić, Igor Miljanović, Čedomir Beljić, and Miloš Gligorić. "Novel Methods in Multiple Criteria Decision-Making Process (MCRAT and RAPS)—Application in the Mining Industry." Mathematics 9, no. 16 (2021): 1980. http://dx.doi.org/10.3390/math9161980.

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Multiple criteria decision making (MCDM) is a supporting tool which is widely spread in different areas of science and industry. Many researchers have confirmed that MCDM methods can be useful for selecting the best solution in many different problems. In this paper, two novel methods are presented and applied on existing decision-making processes in the mining industry. The first method is multiple criteria ranking by alternative trace (MCRAT) and the second is ranking alternatives by perimeter similarity (RAPS). These two novel methods are demonstrated in decision-making problems and compare

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Tan, Wen Hui, Miao Yu, and Peng Fei Zhang. "Damage Analysis on a Frame Structure under Repeatedly Blasting Vibration." Advanced Materials Research 163-167 (December 2010): 3214–18. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3214.

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Blasting is a conventional technique for mining, but structures adjacent to open pit mines are often damaged by blasting vibration, therefore, durability and safety of these structures are affected. Damage characteristics of a three-floor frame structure on the top of an open pit mine under repeatedly blasting vibration is studied in this paper. The damage model of structural members is made based on the theory of damage mechanics of continuous medium, and an overall damage model of the structure is also established by the method of frequency. The results showed that the Young’s modulus, frequ

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35

Afrouz, A., F. P. Hassani, and R. Ucar. "An investigation into blasting design for mining excavations." Mining Science and Technology 7, no. 1 (1988): 45–62. http://dx.doi.org/10.1016/s0167-9031(88)90952-8.

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Young, R. P., and J. J. Hill. "Seismic attenuation spectra in rock mass characterization; a case study in open‐pit mining." GEOPHYSICS 51, no. 2 (1986): 302–23. http://dx.doi.org/10.1190/1.1442090.

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The application of engineering geophysics to the characterization of rock masses is exemplified through a case study of three phases of a research project into the design of efficient blasting systems in open‐pit mining. Seismic experiments are used before and after mine blasting to monitor the efficiency of explosions in terms of rock fragmentation. Spectral analysis of seismic signals, after they have been used to interrogate rock masses, is used to compute preblast and postblast attenuation and velocity parameters. The results show that fragmentation efficiency of a mine blast and fracture

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Shapovalenko, G. N., S. N. Radionov, V. V. Gorbunov, V. A. Khazhiev, V. Yu Zalyadnov, and M. E. Yusupov. "Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine." Mining informational and analytical bulletin, S64 (October 20, 2018): 36–48. http://dx.doi.org/10.25018/0236-1493-2018-12-64-36-48.

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Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsk

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Zairov, Sh Sh, Sh R. Urinov, and R. U. Nomdorov. "Ensuring Wall Stability in the Course of Blasting at Open Pits of Kyzyl Kum Region." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 5, no. 3 (2020): 235–52. http://dx.doi.org/10.17073/2500-0632-2020-3-235-252.

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Involvement of deep deposits in mining predetermined the trend of development of open pit mining towards increasing the depth of open pits. The main limitation imposed on drilling and blasting in the near-contour zone of an open pit is the need to protect the pit walls and engineering structures on the walls from seismic effects of huge blasts. As practice shows, the most effective and proven method of protecting pit walls is the use of blasting by presplitting method, creation of a shielding gap and a shielding layer of blasted rock mass, i.e. pre-splitting of the pit walls, preceding the hug

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Ganopol’skii, M. I., and N. I. Smolii. "Shock airwaves in short-delayed blasting for open pit mining." Soviet Mining Science 21, no. 6 (1985): 510–15. http://dx.doi.org/10.1007/bf02499799.

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Tikhonov, V. A., V. V. Radkov, and T. S. Morozova. "Specific Features of a Mini-Plant to Prepare Non-Explosive Components of Emulsion Explosives." Mining Industry Journal (Gornay Promishlennost), no. 3/2021 (July 20, 2021): 92–97. http://dx.doi.org/10.30686/1609-91922021-3-92-97.

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Extensive engineering experience accumulated at AZOTTECH helps the company to develop and implement new types of equipment. In conditions when capital construction and infrastructure development are not possible in hard-to-reach areas of the country, this equipment provides mobility and availability in mining operations. This article presents a new type of equipment for preparation of non-explosive components of blasting compounds, i.e. a modular mobile plant or a mini-plant. The technological process and the main associated equipment are described. Calculation of efficient fuel consumption fo

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Gao, Kui, Ping Huang, Ze-Gong Liu, Jian Liu, Fei Wang, and Chi-Min Shu. "Pressure Relief by Blasting Roof Cutting in Close Seam Group Mining under Thick Sandstone to Enhance Gas Extraction for Mining Safety." Processes 9, no. 4 (2021): 603. http://dx.doi.org/10.3390/pr9040603.

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Close seam group mining under thin immediate roofs and thick sandstone walls is typically performed with a strong mine pressure and gas concentration, which pose considerable risks to miners. In this study, the mechanism of pressure relief and permeability enhancement to enhance gas extraction for mining safety through blasting roof cutting were investigated through theoretical analyses, numerical simulations, and laboratory tests. The results revealed that, near the blast-hole, which produced numerous cracks, blasting disturbed the integrity of the thick-layer roofs and redistributed the stre

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Cheng, Shixing, Zhanguo Ma, Peng Gong, Kelong Li, Ning Li, and Tuo Wang. "Controlling the Deformation of a Small Coal Pillar Retaining Roadway by Non-Penetrating Directional Pre-Splitting Blasting with a Deep Hole: A Case Study in Wangzhuang Coal Mine." Energies 13, no. 12 (2020): 3084. http://dx.doi.org/10.3390/en13123084.

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In longwall mining of coal mines, the large deformation of small pillar retaining roadways creates difficulties for the safe and efficient retreating of the mining panel. Based on the engineering background of a small coal pillar retaining roadway in Wangzhuang coal mine, pressure relief technology for non-penetrating directional pre-splitting blasting with a deep hole ahead was proposed. The influence of the non-penetrating fracture length on the pre-splitting effect was studied by numerical simulation. The results showed that the vertical stress in the coal pillar center, the small pillar re

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Konicek, Petr, Mani Ram Saharan, and Hani Mitri. "Destress Blasting in Coal Mining – State-of-the-Art Review." Procedia Engineering 26 (2011): 179–94. http://dx.doi.org/10.1016/j.proeng.2011.11.2157.

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Monjezi, Masoud, Zabiholla Ahmadi, and Manoj Khandelwal. "Application of neural networks for the prediction of rock fragmentation in Chadormalu iron mine / Zastosowanie sieci neuronowych do prognozowania stopnia rozdrobnienia skał w kopalni rud żelaza w Chadormalu." Archives of Mining Sciences 57, no. 3 (2012): 787–98. http://dx.doi.org/10.2478/v10267-012-0051-0.

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Abstract Most open-pit mining operations employ blasting for primary breakage of the in-situ rock mass. Inappropriate blasting techniques can result in excessive damage to the wall rock, decreasing stability and increasing water influx. In addition, it will result in either over and/or under breakage of rocks. The presence of over broken rocks can result in decreased wall stability and require additional excavation. In contrast, the presence of under broken rocks may require secondary blasting and additional crushing. Since blasting is a major cost factor, both cases (under and over breakage)

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Salmi, Ebrahim Fathi, and Saeed Hosseinzadeh. "A Further Study on the Mechanism of Pre-Splitting in Mining Engineering." Applied Mechanics and Materials 553 (May 2014): 476–81. http://dx.doi.org/10.4028/www.scientific.net/amm.553.476.

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In this paper, the mechanism of pre-splitting was analysed using both theoretical and numerical methods. An analytical approach was derived based on the thick-wall cylinder theory. Numerical simulation of pre-split blasting of a two adjacent blast-hole bench was conducted using FLAC3Dsoftware. The sequential loading stages of explosive and stress wave were simplified to a triangular shape pulse and applied to the inner wall of blast-holes. Blast wave fronts and plastic zones were monitored in different elapsed times after detonation. Numerical findings show that collision between the two adjac

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Xie, Lidong, Zhaoxing Dong, Yanjun Qi, Ruohua Qiu, and Qiang He. "Vibration Failure of Young Low-Temperature Concrete Shaft Linings Caused by Blasting Excavation." Advances in Civil Engineering 2019 (April 1, 2019): 1–10. http://dx.doi.org/10.1155/2019/5343618.

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The freezing-blasting method constitutes the only available technique for excavating mining shafts within water-bearing bedrock. This study explores the effects of vibration damage to young C65 concrete shaft linings caused by close-range blasting excavation using the finite element method. C65 concrete test specimens were made in the laboratory and then cured at −7°C, and the elastic modulus, compressive strength, and longitudinal wave velocity were tested. The allowable dynamic tensile strength of the concrete for each mold of the shaft lining was obtained according to the observed strain ra

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Zhu, Wancheng, Jiong Wei, Leilei Niu, Shuai Li, and Shaohua Li. "Numerical Simulation on Damage and Failure Mechanism of Rock under Combined Multiple Strain Rates." Shock and Vibration 2018 (October 11, 2018): 1–20. http://dx.doi.org/10.1155/2018/4534250.

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During underground hard-rock mining, the drilling and blasting method currently remains the most economical excavation method, and the rock may experience a multistrain-rate spectrum under quasi-static, dynamic, and rheological loading conditions and their combination as well. The study on the damage mechanism of rock under multistrain-rate condition that induced by mining excavation is the fundamental issue for predicting the mining-induced hazards such as rockburst. In this study, the state of the art of rock damage and failure under different strain rates is reviewed first. Then, the numeri

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Zhang, Xi-liang, Hai-bao Yi, Hong-hao Ma, and Zhao-wu Shen. "Blast Parameter Optimization Study Based on a Blast Crater Experiment." Shock and Vibration 2018 (July 5, 2018): 1–12. http://dx.doi.org/10.1155/2018/8031735.

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The blasting quality and the rock volume blasted directly affect the cost of mines. A small charge-forward blast crater experiment was conducted to study the relationships between the rock volume blasted, the explosive unit consumption, the bulk yield, and the depth ratio. The results showed that the rational resistant line or explosive charge depth should be 0.86 times the optimal resistant line. Based on theoretical analysis of the large spacing of the holes and the small resistance line, the uniform design method was used to conduct the lateral blasting crater tests. The relationship equati

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Li, Qingwen, and Ben Xiang. "Rockburst Prediction on the Superimposed Effect of Excavation Accumulation Energy and Blasting Vibration Energy in Deep Roadway." Shock and Vibration 2021 (May 6, 2021): 1–10. http://dx.doi.org/10.1155/2021/6644590.

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In deep mining, much elastic energy is stored in rock mass due to the high geostress. Rockburst will be induced by accumulated energy during excavation. Meanwhile, because of blasting vibration energy in the host rock, there will be an obvious superimposed effect on the probability and intensity of rockburst. To explore the most reasonable and effective method for understanding rockburst problem under blasting, a deep roadway of Sanshandao gold mine was studied. On the basis of in situ geostress data, the accumulated energy of three-centered arch roadway after quasi-static excavation was deriv

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Isheyskiy, Valentin, Evgeny Martinyskin, Sergey Smirnov, Anton Vasilyev, Kirill Knyazev, and Timur Fatyanov. "Specifics of MWD Data Collection and Verification during Formation of Training Datasets." Minerals 11, no. 8 (2021): 798. http://dx.doi.org/10.3390/min11080798.

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This paper presents a structured analysis in the area of measurement while drilling (MWD) data processing and verification methods, as well as describes the main nuances and certain specifics of “clean” data selection in order to build a “parent” training database for subsequent use in machine learning algorithms. The main purpose of the authors is to create a trainable machine learning algorithm, which, based on the available “clean” input data associated with specific conditions, could correlate, process and select parameters obtained from the drilling rig and use them for further estimation

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