Showing 81 - 100 results of 135 for search '"Shanxi province"', query time: 0.08s Refine Results
  1. 81
  2. 82

    Mining-Induced Damage Characteristics of Floors during Fully Mechanized Caving Mining: A Case Study by Yulong Jiang, Dongfeng Zhang, Kai Wang, Xiaoqiang Zhang

    Published 2018-01-01
    “…To study the mining-induced damage characteristics of floors during fully mechanized mining, in situ measurements were performed using the hollow inclusion strain sensors in the No. 100502 (80 m, 180 m) mining face of the Yitang Coal Mine in the Huoxi coal field in the Shanxi Province of China. The in situ measurement results show that the failure depths of the floor rocks in the 100502 (80 m) and 100502 (180 m) mining faces were 12.50∼14.65 m and 17.50∼19.20 m, respectively. …”
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  3. 83
  4. 84

    Prediction correction modeling of water-conducting fracture zones height due to repeated mining in close distance coal seams by Zhuoran Kang, Daming Yang, Pengfei Shen

    Published 2024-12-01
    “…It was successfully applied and validated on the 100,501 working face of Nanyaotou Coal Mine in Shanxi Province, offering a new scientific approach for predicting the WCFZ.…”
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  5. 85

    Study on Microclimate Characteristics and Vertical Variation of Potential Evapotranspiration of the Robinia pseudoacacia Forest in the Loess Plateau of China by Jianjun Zhang, Baoni Guo, Qun’ou Jiang, Hao Ru, Zhen Wang

    Published 2013-01-01
    “…With the water and soil conservation forests of Robinia pseudoacacia in the Malian beach of Hongqi farm, Ji County, Shanxi province, as the research object, this study estimated the potential evapotranspiration in the open space outside the forest and at the heights of 3 m, 6 m, and 10 m in the forests with the climate data during 2011-2012 and the upgraded Penman-Monteith formula; then, this study explored the microclimate characteristics inside and outside the Robinia pseudoacacia forest and thereafter revealed the vertical variation rules of potential evapotranspiration of Robinia pseudoacacia. …”
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  6. 86
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    Gas drainage and utilization in coal mines in China: History, technological advances, and prospects by Guofu LI, Chao LI, Bichuan ZHANG, Yun XU, Zheng WANG, Xianjun ZHOU

    Published 2025-01-01
    “…During this period, underground drilling was employed for gas pumping in target coal seams and their upper adjacent strata to ensure mining safety in the Fushun mining area in Liaoning Province, the Yangquan mining area in Shanxi Province, and the Tianfu mining area in Chongqing City. …”
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  8. 88

    Analysis of the Effect of Artificial Intelligence on Role Cognition in the Education System by Jianjian Zhu, Chuming Ren

    Published 2022-01-01
    “…Taking the entire education system in Taiyuan City, Shanxi Province, Central China, as an example, this paper uses the questionnaire survey method to analyze the effect of artificial intelligence (AI) on role cognition in the education system. …”
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  9. 89

    Prediction and Evaluation of Coal Mine Coal Bump Based on Improved Deep Neural Network by Shuang Gong, Yi Tan, Wen Wang

    Published 2021-01-01
    “…The DA-DNN model avoids the problem of determining the index weight, is completely data-driven, reduces the influence of human factors, and can realize the learning of complex and subtle deep relationships in incomplete, imprecise, and noisy limited data sets. A coal mine in Shanxi Province is used to predict coal bump with the improved depth learning method. …”
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  10. 90

    风机偏心对空冷梁式桥架振动实验研究 by 郭铁能, 孟令军, 白春生, 华旭

    Published 2021-01-01
    “…The vibration problem of air-cooling fan bridge has been troubling the north thermal power plant.Excessive vibration amplitude causes the damage of fan,motor,reducer and other equipment,and affects the stability and economic benefit of power plant operation.In this paper,the vibration speed of the air-cooling fan exceeded the standard as the research object,and the data acquisition instrument and acceleration sensor were used to test the vibration of the air cooling fan bridge in the power plant of xiaoyi in Shanxi Province.According to the frequency characteristics generated by these incentives,the main influence factors of the vibration of the fan bridge caused by the original fan blades were explored.By analyzing the vibration signal,the main influencing factors of the vibration of fan bridge are explored according to the frequency characteristics.The test results show that the excessive vibration of the bridge is caused by the interference force caused by the fan eccentric mass.During the operation of the fan,the phase of the sensor at the middle of the bridge alternates positively and negatively,and the fan shaft produces a sway,which is inconsistent with the expected horizontal vibration of the bridge.In order to verify the rationality of the above analysis,the finite element analysis of the bridge frame was carried out,and the results are consistent with the above conclusions.Through the forced vibration test and hammer test of the fan bridge,it is found that the maximum frequency value of the vibration of the fan bridge caused by eccentric mass is far away from the natural vibration frequency of the fan bridge,and will not cause the resonance phenomenon of the fan bridge.Therefore,the vibration of the fan bridge caused by eccentric mass is only related to the static stiffness of the fan bridge.The test results will provide a basis for the design of beam bridge and the avoidance of vibration caused by fan eccentricity.…”
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  11. 91

    Goaf Gas Control Improvement by Optimizing the Adjacent Roadway Large-Diameter Boreholes by Wei Wang, Zongxiang Li, Hongming Yu

    Published 2021-01-01
    “…Using the 2-105 working face of the Tenghui Coal Mine, Shanxi Province, China, as a case study, the distribution patterns of gas concentration and flow field in the goaf for various extraction flow parameters and different positions of boreholes were numerically simulated. …”
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  12. 92

    The Stability of Gob-Side Entry Retaining in a High-Gas-Risk Mine by Junwen Zhang, Yulin Li

    Published 2019-01-01
    “…Based on the gob-side entry retaining at the No. 18205 working face in a coal mine in Shanxi Province, theoretical analysis, numerical simulation, and engineering practice were comprehensively used to study the mechanical characteristics of the influence of the width of the filling body beside the roadway and the stability of surrounding rock in a high-gas-risk mine. …”
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  13. 93

    Prediction of old goaf residual subsidence integrating EDS-InSAR with EsLSTM in the Loess Plateau, China by Fei Ma, Fei Ma, Qingbin Zhang, Lichun Sui

    Published 2025-01-01
    “…The investigation centers on the 18,001# old goaf area of the Yangquan Coal Mine in Shanxi Province. Using Sentinel-1A imagery, continuous SAR data from 98 periods were acquired and processed via Enhanced Distributed Scatter InSAR technology. …”
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  14. 94

    A Case Study on the Control of Large Deformations in a Roadway Located in the Du’erping Coal Mine in China by Xiaojie Yang, Chaowen Hu, Jianhui Liang, Yubo Zhou, Guofeng Ni, Ruifeng Huang

    Published 2019-01-01
    “…This paper describes a case study of large deformation control in a roadway surrounded with broken rock located in the Du’erping coal mine in the Shanxi Province of China. A new “shell + bolt + shotcrete” combined support structure is proposed to support the north wing main haulage roadway. …”
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  15. 95
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    Influence of social support on technophobia in older adults in urban communities: the mediating role of self-efficacy and e-health literacy, a cross-sectional study by Jin Li, Chen Wang, Dan Luo, Yan Shi, Hua Qing Guo, Zhi Guang Duan

    Published 2025-02-01
    “…Objectives To explore the chained mediating role of self-efficacy and e-health literacy in the association between social support and technophobia in older adults in urban communities.Design A cross-sectional study conducted from June 2023 to April 2024.Setting This study was conducted in three districts of Taiyuan City, Shanxi Province, China.Participants The study enrolled 1658 older adults (> 60 years old) in urban communities in Taiyuan.Methods The analyses included assessments using the technophobia, e-health, self-efficacy and social support scales, and the mediating effects of these indices were investigated using Model 6 in SPSS V.26.Results The level of technophobia in older adults was found to be moderately high. …”
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  17. 97

    Trade-off or synergy? The impacts of coal energy consumption on compound system vulnerability: A perspective from coal resource base assessment by Zhaorui Jing, Xiangyu Min, Sijia Li, Junying Li, Wen Song

    Published 2025-01-01
    “…Here, we systematically assess the composite relationship between capacity utilization and systems vulnerability of the coal base in northern Shanxi Province, verify the trade-off /synergy driving mechanism of ‘Energy saving and emission reduction’ in coal resource-based city. …”
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  18. 98

    Application of Homogenized Load-Bearing Ring Hypothesis in Roadway Supporting by Quntao Zhang, Jianwei Zheng, Xiaodong Sun, Wenzhou Li, Kang Yi, Yukai Fu, Jiulin Shi, Shuai Wang, Biao Liu, Qi Wang

    Published 2022-01-01
    “…According to prestress diffusion characteristics of bolt, some ways to achieve HLBR were proposed, which were the optimal axial ratio design, difference support and local grouting modification, and finally performance of the original support design in a belt roadway of the mining district IV of a mine in Shanxi Province. A new supporting scheme was provided according to the HLBR hypothesis. …”
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  19. 99
  20. 100

    Experimental study and field application of hydraulic flushing technology in soft coal seam by Xun Zhao, Bei Hu, Baisheng Nie, Xianfeng Liu, Dan Zhao, Hongsheng Li, Chuan Deng, Zhengpeng Duan

    Published 2025-01-01
    “…To validate the practical efficacy of hydraulic flushing, a field test was conducted at the Yuwu Coal Mine in Changzhi City, Shanxi Province. The field trial shows that the effective influence radius of hydraulic flushing can reach 4 m, with a significantly lower gas flow attenuation coefficient compared to ordinary borehole. …”
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