Results 31 to 40 of about 69,019 (276)
Mechanism and prevention of typical coal burst disaster at the working face of Hongqinghe coal mine
矿业科学学报, 2023 This study aims to tackle the problem of frequent coal-rock dynamic events caused by local stress concentration in deep mining working face under high static stress environment.
Liu Wenchao, Zhao Yixin
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Improving efficiency of information measurement system of coal mine air gas protection [PDF]
, 2017 Purpose. Development of scientific approaches to creation of high-precision and high-speed optoelectronic measurement systems within the complex of air gas safety of coal mines by means of the developed and implemented methods and means of measurement ...
Laktionov, I, Vovna, O, Zori, A
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Study and practice on modification mechanism of engineering defects on impact coal and rock mass
Meikuang Anquan, 2022 Rock burst is one of the more serious dynamic disasters in coal mines. With the continuous increase of mining depth, rock burst disasters are becoming more and more serious. In view of the characteristics of major rock burst disasters, combined with the
KOU Tiansi, PAN Liyou, CHEN Liqiang
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An empirical comparison of alternate regime-switching models for electricity spot prices [PDF]
, 2010 One of the most profound features of electricity spot prices are the price spikes. Markov regime-switching (MRS) models seem to be a natural candidate for modeling this spiky behavior.
Janczura, Joanna, Weron, Rafal
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Ultrasonic and CT scanning analysis of coal-rock mass under the primary bedding structure
Meitan kexue jishuIn order to study the influence of the primary bedding structure on wave velocity and mechanical properties of coal-rock mass, multilayer and multi-directional ultrasonic and CT scanning tests were carried out in laboratory.
Guorong LEI +6 more
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Cutting-edge industrial technology of mining tool manufacturing [PDF]
, 2016 Purpose. To conduct a comparative economic analysis of cermet alloys regeneration technology, to identify the most “environmentally friendly” and cost-effective processing of solid alloys waste. Methods.
Gurenko, A, Naumenko, O, Savchenko, Iu
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Meitan kexue jishuTo address the prevention and control of rock burst disasters in deep coal mines, this study focuses on the spatiotemporal evolution mechanism of mining-induced stress, introducing the novel concept of “stress flow” to characterize dynamic stress ...
Chi LIU +7 more
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Shock and Vibration, 2023 The occurrence regularity of the coal mine earthquake under the influence of hard roof, fault, and mining was studied by theoretical analysis, field investigation, and monitoring data analysis for the phenomenon of rock burst induced by coal mine ...
Pengfei Lyu, Yijian Geng
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Quantitative assessment of energy changes in underground coal excavations using numerical approach
Geohazard Mechanics, 2023 Coal burst is caused by a dynamic and unstable release of energy within the overstressed rock mass/coal during the mining process. Although the occurrence of coal burst is a result of the complex impacts of many factors, a major component of coal burst ...
Chunchen Wei +4 more
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Geomatics, Natural Hazards & Risk, 2023 Coal bursts caused by mining-induced seismicity occur in the working face in steeply inclined and extra thick coal seams (SIETCSs). This article presents a case study in SIETCS through discrete element simulation as well as field investigation.
Jinrong Cao +5 more
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