Monitoring, Warning, and Control of Rockburst in Deep Metal Mines

Feng, Xia‐Ting; Liu, Jianpo; Chen, Bingrui; Xiao, Yuzhou; Feng, Guang-Liang; Zhang, Fengpeng

doi:10.1016/j.eng.2017.04.013

Cited by 128 publications

(69 citation statements)

References 9 publications

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“…There are many methods for plotting nomograms [4,5,6,7,8], and their essence reduces to the possibility of defining the most significant measures influencing the technology efficiency. When using nomograms, the results of field-geological study are used taking into account the most substantial data [9,10,11].…”

Section: Methodsmentioning

confidence: 99%

Nomogram Method as Means for Resource Potential Efficiency Predicative Aid of Petrothermal Energy

Gabdrakhmanova

Izmailova

Larin

et al. 2018

J. Phys.: Conf. Ser.

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Abstract. The article describes the innovative approach when predicting the resource potential efficiency of petrothermal energy. Various geothermal gradients representative of Bashkortostan and Tatarstan republics regions were considered. With the help of nomograms, the authors analysed fluid temperature dependency graphs at the outlet and the thermal power versus fluid velocity along the wellbore. From the family of graphs plotted by us, velocities corresponding to specific temperature were found. Then, according to thermal power versus velocity curve, power levels corresponding to these velocities relative to the selected fluid temperature were found. On the basis of two dependencies obtained, nomograms were plotted. The result of determining the petrothermal energy production efficiency is a family of isocline lines that enables one to select the optimum temperature and injection rate to obtain the required amount of heat for a particular depth and geothermal gradient.

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Section: Methodsmentioning

confidence: 99%

Nomogram Method as Means for Resource Potential Efficiency Predicative Aid of Petrothermal Energy

Gabdrakhmanova

Izmailova

Larin

et al. 2018

J. Phys.: Conf. Ser.

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“…In fact, a similar advance to more considerable depths has been observed in China: thirty-two metal mines and forty-seven coal mines have been developed at mining depths over 1000 m [6], such as the Hongtoushan Copper Mine in Fushun and the Suncun Coal Mine in Xinwen having mining depths of 1600 and 1500 m, respectively. However, it is clear that the high-efficiency development and utilization of deep mineral resources will face more significant problems in safety, environmental impact, and economy, as well as require more advanced technologies [7][8][9][10][11][12], wherein the thermal damage induced by high-temperatures in deep mines, which exceed 303.15−313.15 K at a depth of 1000 m, has become a great challenge for production [13][14][15][16][17][18]. For example, in the Sanhejian Coal Mine (with a mining depth of 1300 m) in Xuzhou, China, the working face temperature is as high as 329.15 K [19].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Set of Cooling Measures for the Overall Control and Reduction of High Temperature-Induced Thermal Damage in Oversize Deep Mines: A Case Study

et al. 2020

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The mining process in deep mines occurs at elevated temperatures and thus is significantly jeopardized by the thermal damage. In this study, the main factors causing high-temperatures under particular mining geological and prevailing conditions of coal mine production, namely for the Longgu Coal Mine (LCM) in Shandong Province of China, were specified and analyzed in detail. This included exothermic heat from the surrounding rock of an underground roadway, inflow of high-temperature water, seasonal temperature rise, mechanical and electrical equipment operation, and airflow compression in the mine. The integrated artificial cooling mode was implemented on the basis of the original normal ventilation and cooling facilities of the LCM, which involved cooling by mobile refrigeration units, water source heat pump refrigeration units, and a ground centralized ice-cooling radiation system, as well as the underground centralized cooling system provided by Wärme-Austausch-Technik (WAT) GmbH. Eventually, a comprehensive set of measures for the overall control and reduction of high-temperature-induced damage was realized, which ensured more effective cooling of the LCM. Thus, the average temperature of the main operation sites was reduced by 8 K, while that of the underground working faces was maintained at 299.15 K. These measures also resulted in excellent technical and economic benefits: the total three-year increase in revenue and savings reached 76.3 million USD, hence relevant findings of the study are expected to provide technical guidance on the treatment of high-temperature-induced damage in deep mines.

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“…Rapid economic growth is boosting the development of underground resources and the construction of deep underground infrastructure at an unprecedented speed [1][2][3]. Due to the increasing depth and the impact of structural stresses, deeply buried tunnels often pass through high geo-stress areas with complicated strata [4][5][6][7][8][9][10][11]. High elastic strain energy exists in deep rock masses in high geo-stress areas.…”

Section: Introductionmentioning

confidence: 99%

Rockburst Identification Method Based on Energy Storage Limit of Surrounding Rock

et al. 2020

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Rockbursts are one of the prominent problems faced by deep underground engineering. Not only do they affect the construction progress, but they also threaten the safety of construction personnel and equipment, and may even induce earthquakes. Therefore, the prediction of rockbursts has very important engineering significance for the excavation of deeply buried tunnels. In this paper, a new indicator for stability and optimization evaluation of hard, brittle surrounding rock under high geo-stresses, namely the minimum energy storage limit of surrounding rock induced by transient unloading, is proposed. In addition, the time for erecting support for tunnel excavation in the rockburst area and the impact of excavation dimensions on rockburst are investigated. The results show that transient unloading during the tunnel excavation process will reduce the energy storage limit of the rock mass. When the strain energy density of the local surrounding rock exceeds the minimum energy storage limit of the rock mass, the rock mass energy is suddenly released, and rockburst occurs. Rockburst is most likely to occur at 0.42–0.65 D away from the working face. The increasing length of a round adopted in high geo-stress areas will make the surrounding rock unstable and increase the probability of rockburst.

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Monitoring, Warning, and Control of Rockburst in Deep Metal Mines

Cited by 128 publications

References 9 publications

Nomogram Method as Means for Resource Potential Efficiency Predicative Aid of Petrothermal Energy

Nomogram Method as Means for Resource Potential Efficiency Predicative Aid of Petrothermal Energy

A Comprehensive Set of Cooling Measures for the Overall Control and Reduction of High Temperature-Induced Thermal Damage in Oversize Deep Mines: A Case Study

Rockburst Identification Method Based on Energy Storage Limit of Surrounding Rock

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