Showing 721 - 740 results of 897 for search '"Guizhou"', query time: 0.05s Refine Results
  1. 721

    The Influence of Moisture Content on the Time-Dependent Characteristics of Rock Material and Its Application to the Construction of a Tunnel Portal by Xiaojun Liu, Chao Yang, Jing Yu

    Published 2015-01-01
    “…Uniaxial compression creep experiments were carried out for low-grade metamorphic slate samples (located in the southeastern area of Guizhou province, China) with different moisture contents, using an Instron electric-fluid servo-compression machine. …”
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  2. 722

    Numerical Simulation of Seepage-Heat-Solid Coupling of Gas Seepage in Prepumped Boreholes under Electrothermal High Temperature Field by Xionggang Xie, Jin Yang, XiangYing Luo, Jianjun Ren

    Published 2022-01-01
    “…In order to verify the law of coal bed gas desorption and permeability under electrothermal high-temperature field, by establishing the mathematical model of gas seepage-heat-solid coupling, and taking gas drainage working face in Guizhou as an engineering example, the characteristics of the high-temperature field of coal under different heating hole temperatures are simulated. …”
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  9. 729

    Evaluation and Influencing Factors of Transportation Industry Energy Efficiency of Changjiang Economic Zone by Yi Xu, Xiaojuan Li

    Published 2021-01-01
    “…In the sample period, Jiangsu, Jiangxi, Zhejiang, Sichuan, Shanghai, and Anhui achieved relatively satisfactory TIEEs; Hunan, Hubei, and Guizhou performed generally on TIEE, calling for some improvement; Chongqing and Yunnan did not perform well, leaving a huge room for improvement. …”
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  10. 730
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  12. 732

    Study on River System Flood Forecasting Scheme for Longtan Hydropower Station Interval in Hongshui River by DU Yong, FU Yupeng, WEI Yongjiang, LI Zongtai

    Published 2024-01-01
    “…Longtan Hydropower Station is a flood control project in the Pearl River Basin,but there is currently a lack of a comprehensive river system flood forecasting scheme.In order to give full play to the flood control and storage function of Longtan Hydropower Station,tributary control stations such as Leigongtan,Moyang,Pinglihe,Pinghu,and Xianrenqiao are selected,and the key areas of concern are determined through the analysis of important sub-intervals.The river system flood forecasting scheme for the Longtan Hydropower Station interval is constructed by using the Xin'an River three-source runoff generation model,three-source lag routing convergence model,and Maskingen convergence algorithm.The research results show that the proportion of the maximum inflow flood volume of Longtan Hydropower Station is usually in uncontrolled intervals,followed by the tributaries in Guizhou Province (Mengjiang River,Bawang River,Caodu River,and Liudong River),which are the focus of flood forecasting.The total average relative peak flow error and the average relative flood volume error in the river system flood forecasting scheme are both 10%,and the average deterministic coefficients are above 0.75.The overall results are relatively accurate.Therefore,the river system flood forecasting scheme for the Longtan Hydropower Station interval can be applied to real-time flood operation forecasting,and it lays a solid foundation for further improving the “forecast,early warning,rehearsal,and contingency plan” capability.…”
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  13. 733

    A study on coupling and coordination of grain production and agricultural ecological protection in the Yangtze river economic belt by Xuanzhu Meng, Linqi Liu, Yingying Cai, Xinyue Wang

    Published 2025-02-01
    “…In terms of regions, Guizhou has the highest comprehensive level of grain production, and Anhui has the lowest; the region with the highest comprehensive level of agricultural ecological protection is Chongqing, and the lowest is Jiangxi; only Anhui and Hubei have entered high coordination stage, and only Shanghai, Zhejiang, Chongqing, and Yunnan belong to the type of synchronous development. …”
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  14. 734

    Research on Reservoir Emergency Dispatching under Sudden Water Pollution Incident——A Case Study of Hongshui River in the Upper Reaches of the Pearl River by BIAN Kaixuan, HUANG Qiang, YANG Yuanyuan, LIU Dengfeng, LIU Dong, HAN Zhiming, WAN Xin

    Published 2020-01-01
    “…The Pearl River is an important water source for Yunnan, Guizhou, Guangxi, Guangdong ,etc. It is extremely important to study the movement and diffusion process of water pollutants andthe countermeasures for sudden water pollution incident in this basin for water supply security.Assuming that an emergency event of substandard sewage discharging occurs approximately 12 kmdownstream of Longtan Reservoir (in Tian'e County, Guangxi) during the dry season, this paperformulates a reservoir emergency dispatching plan set, and simulates the movement process ofpollutants by the water quality model in the EIAW11 software package, and the concentration changeprocess of pollutants with different concentrations (taking BOD as an example)under differentdownstream sections and different river flows. …”
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  15. 735
  16. 736

    Attribution Analysis of Runoff Change in the Upper Reaches of the Liuchong River Basin Based on Coupled Water-energy Balance Equation by LONG Da, DONG Qianjin, YANG Rongfang

    Published 2021-01-01
    “…Taking the upper reaches of the Liuchong River in Guizhou Province as the study area,this paper first analyzes the trend and abrupt change of the annual runoff at Qixingguan Station in the Liuchong River by the Mann-Kendall test and Pettitt test to find the abrupt change points,then,discusses the reasons of runoff change before and after the abrupt change points by the coupled water-energy balance equation,finally,calculates the contribution rates of precipitation,potential evapotranspiration and underlying surface to runoff change through the sensitivity analysis of their elastic coefficients.The results show that:The depth of runoff in the upper reaches of the Liuchong River shows a significant downward trend from 1971 to 2009,and a significant abrupt change occurred in 1986.By comparing the sensitivity of precipitation,potential evapotranspiration,and underlying surface to runoff change,it is found that the elastic coefficient of precipitation is the highest,followed by the underlying surface index,and finally the potential evapotranspiration,indicating that runoff is the most sensitive to the change of precipitation.In addition,based on the results of the contribution rate of the three factors to the reduction of runoff,it is found that the contribution rate of decreasing precipitation to runoff reduction is as high as 113.3%,followed by the change of underlying surface,with a contribution rate of 14.4% and finally the increasing potential evapotranspiration,with a contribution rate of -27.7%.…”
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    Effect of Pretreatment with Sulfuric Acid on Catalytic Hydrocracking of Fe/AC Catalysts by Ruiyu Wang, Fei Wang, Ling Liu

    Published 2017-01-01
    “…Hydroconversion of the extraction residue from Guizhou bituminous coal was also studied using Fe2S3/AC-T as the catalyst. …”
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  19. 739

    Study on Prediction of Outburst Risk of Excavation Face by Initial Gas Emission by Lu Gao, Xiangtao Kang, Meng Tang, Jinguo Hu, Jiachi Ren, Cunliu Zhou

    Published 2022-01-01
    “…Using a ZTL20/1000-Z mine flameproof prediction device, taking excavation face 9301 in the Anshun Coal Mine in Guizhou Province, China, as the research object, and taking the detailed regulations for prevention and control of coal and gas outburst promulgated by the China Coal Mine Safety Supervision Bureau in 2019 as the prediction standard for coal and gas outbursts, an experiment on the outburst risk prediction for the excavation face was conducted. …”
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  20. 740

    Comparative study on blasting simulation vibration reduction and field vibration reduction experiment of adjacent oil pipeline by Yi Chen, Ruichong Zhang, Lujia Liang, Yi Wang, Jiaozhong Chen, Chengyu Xie

    Published 2025-01-01
    “…IntroductionYongxing Tunnel No.1’s complex geology near a buried oil pipeline on the Guizhou-Nanning high-speed route poses blasting risks. …”
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