Selected Methods of Rock Structure Disintegration to Control Mining Hazards / Wybrane Metody Dezintegracji Struktury Skał Dla Zwalczania Zagrożeń Górniczych

Kabiesz, J.; Lurka, Adam; Drzewiecki, J.

doi:10.1515/amsc-2015-0053

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…in the direction of energy accumulation, the pressure required for detonation P 1 is as formula (3). in the non-aggregated energy direction, the pressure required for detonation P 2 is as shown in formula (4). Therefore, in the direction of energy accumulation, the stress produced by detonation gas reduces the required pressure for crack initiation and propagation, which is conducive to the preferential development of cracks in the direction of energy accumulation.…”

Section: Bilateral Cumulative Tensile Explosions 21 Technical Principlementioning

confidence: 99%

“…Roof blasting and hydraulic fracturing [1,2] are often used in coal mine production, to eliminate mining hazards [3,4]. Compared with ordinary blasting, controlled blasting can break rocks within a predetermined range and reduce rock damage outside this range [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Costin [11] carried out experiments using this method on oil shale and achieved exceptional results. Kabiesz [4] used a newly designed device to create a wedge-shaped notch in the vertical direction of the borehole, resulting in the effect of a concentrated blasting. Bjarnholt g. [12] introduced an energy-concentrated charge into the rock blasting.…”

Section: Introductionmentioning

confidence: 99%

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Archives of Mining Sciences

Yang,

Liu,

Bian

et al. 2021

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ApplicAtion cumulAtive tensile explosions for roof cutting in chinese underground coAl minesCumulative blasts are an important controlled blasting method used to control the propagation of cracks in the predetermined direction. however, traditional cumulative blasts are associated with long processing times and poor blasting effects. A simple blasting technology called bilateral cumulative tensile explosion (BCTE) is proposed in this paper. There are two application types where BCTE is used. The first application is used to control the stability of high-stress roadways in both Wangzhuang mine 6208 tailgate and hongqinghe mine 3-1103 tailgate. The second application is used to replace the backfill body in gob--side entry retaining (gER) in Chengjiao mine 21404 panel, Jinfeng mine 011810 panel and Zhongxing mine 1200 panel. The first application type reveals that BCTE can significantly reduce the deformation of the surrounding rock and reduce the associated maintenance cost of the roadways. Whereas the second application type, the roadway deformations are smaller, the process is simpler, and the production costs are lower, which further promotes gER and is of significance towards conserving resources.

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Section: Bilateral Cumulative Tensile Explosions 21 Technical Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Archives of Mining Sciences

Yang,

Liu,

Bian

et al. 2021

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“…erefore, rock burst is one of the main power disasters faced by coal mining in China. In response to this problem, so far many experts and scholars have done lots of studies on rock burst [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Jiang et al [4] classified rock burst into three types based on coal and rock mass failure patterns.…”

Section: Introductionmentioning

confidence: 99%

Research on the Source Mechanism and Source Prevention and Control System of Deep Rock Burst

Di¹

2020

Advances in Civil Engineering

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Deep rock burst accidents occur frequently and become increasingly serious. Further improving the effectiveness and accuracy of the prevention and control of rock burst, ensuring the safe and efficient production of mines, clarifying the basic causes of disasters, and refining the type of deep rock burst are the most important key links. Aiming at the problems such as unclear incentives and types and the lack of effective and targeted prevention measures of deep rock burst, taking Xin’an Mine as the research background, based on the energy theory, the coal and rock mass multisource energy unified equation was established to analyze coal and rock mass instability mechanism. According to the different degrees of participation of various factors, the types of deep rock burst are determined as three categories and four types, and the corresponding judgment criteria are proposed. The precise prevention and control system for the source of rock burst with Xin’an characteristics is proposed, successfully applied to the 8101 working face, which not only guarantees the safe production of the working face, but also achieves good economic benefits. The research results lay the foundation for improving the accuracy and precision of the prevention and control of deep rock burst and provide theoretical guidance for the safe and efficient mining of the mine.

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“…Depending on the size of the mining face, the entire firing sequence can last even up to 5-6 seconds. Assuming that the velocity of a seismic wave in a rock mass in the area of the KGHM mines is approximately 5,000 m/s [22], and considering the rock mass properties in terms of seismic waves damping, amplification of elastic wave is only possible with relatively short and precise delays. It is then assumed, that decreasing the time intervals would favor the likelihood of the occurrence of elastic wave interference.…”

Section: Introductionmentioning

confidence: 99%

Blasting Delay Pattern Development in the Light of Rockburst Prevention – Case Study from Polish Copper Mine

et al. 2019

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In order to reduce the risk of induced seismicity related to underground mining, a number of preventive actions are applied in the form of passive and active prevention methods. The former are mainly of an organisational nature and their effectiveness is usually considered in the long term, while the active methods are mostly based on the detonation of explosives and are aimed to release the seismic energy accumulated in the rock mass. In this paper, modifications of the firing pattern aimed to concentrate the paraseismic vibrations while maintaining the appropriate excavation of the mining face has been verified on the basis of underground tests. The evaluation was based on fragmentation analysis. The obtained results confirmed, that the blasting pattern modifications related to the reducing of the face firing time do not cause significant differences in terms of the appropriate excavation of the mining face.

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Selected Methods of Rock Structure Disintegration to Control Mining Hazards / Wybrane Metody Dezintegracji Struktury Skał Dla Zwalczania Zagrożeń Górniczych

Cited by 8 publications

References 6 publications

Archives of Mining Sciences

Archives of Mining Sciences

Research on the Source Mechanism and Source Prevention and Control System of Deep Rock Burst

Blasting Delay Pattern Development in the Light of Rockburst Prevention – Case Study from Polish Copper Mine

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