Education 06/2013 – 06/2017, Post doctor in Water Conservancy Engineering, College of New Energy and Environment, Jilin University, China 09/2009 – 06/2012, Doctor in Geological Engineering, College of Construction Engineering, Jilin University, China 09/2007 – 06/2009, Master in Geological Engineering, College of Construction Engineering, Jilin University, China 09/2003 – 06/2007, Bachelor in Engineering Geology, College of Construction Engineering, Jilin University, China
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Working Experience 09/2018-now, Associate Professor, College of Construction Engineering, Jilin University, China 07/2012-09/2018, Lecture, College of Construction Engineering, Jilin University, China
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Representative Achievements
High clay dredger fill consolidated by step vacuum preloading In view of the phenomenon of fine particles blocking the PVDs and failure of reinforcement when dealing with newly high clay content dredger fill by traditional vacuum preloading method. The research group put forward the method of strengthening the high clay content dredger fill with step vacuum preloading and verified its effectiveness through laboratory tests. Based on the preliminary study, this project carried out a microscopic mechanism study on the reinforcement of high clay content dredger fill by the step vacuum preloading method, deeply studied the aging characteristics of microstructure formation in the process of step vacuum preloading, and confirmed the feasibility of strengthening high clay content dredger fill foundation by step vacuum preloading method from the perspective of mechanism. The laboratory simulation test of step vacuum preloading method was carried out by using the self-made model box, and the changes of settlement, displacement and pore water pressure with time in the consolidation process of the soil were monitored. From the aspects of water content, pore solution concentration, clay content and permeability coefficient, the relationship between the macroscopic properties of the dredger fill and time was established. A self-made frozen sampler was used to obtain the microstructure samples of the soil at each stage. Using scanning electron microscope (SEM) and mercury intrusion porosimetry to test the microstructure properties of dredger fill, discussed the changes of microstructure characteristics, porosity, average pore diameter and pore diameter range distribution and pore fractal dimension microstructure parameters with time. Fully considering the time effect of the microstructure, the relationship between macroscopic properties and microstructure parameters in the consolidation process was established. Combined with macroscopic physical characteristics and microstructure changes, the consolidation mechanism of high clay content dredger fill which was consolidated by step vacuum preloading method was revealed, which has important theoretical significance for popularizing the treatment technology of high clay content dredger fill consolidated by step vacuum preloading method. |
Publications 1) Wenchong Shan, Hui-e Chen, Xiaoqing Yuan*, Wenliang Ma, Hui Li. Mechanism of pore water seepage in soil reinforced by step vacuum preloading. Bulletin of Engineering Geology and the Environment, 2021, 80: 2777-2787. (SCI) 2) Jinfeng Li, Huie Chen, Xiaoqing Yuan*, Wenchong Shan. Analysis of the Effectiveness of the Step Vacuum Preloading Method: A Case Study on High Clay Content Dredger Fill in Tianjin, China. Journal of Marine Science and Engineering, 2020, 8, 38:1-16. (SCI) 3) Huie Chen, Haotian Guo, Xiaoqing Yuan*, Yating Chena, Chao Sun. Effect of Temperature on the Strength Characteristics of Unsaturated Silty Clay in Seasonal Frozen Region. KSCE Journal of Civil Engineering, 2020, 24(9):2610-2620. (SCI) 4) Zongfang Chen, Huie Chen, Xiaoqing Yuan*, Qing Zhang. Experimental investigation into non-collapsible loess-like soil’s engineering geological properties under the influence of freeze-thaw cycles. Quarterly Journal of Engineering Geology and Hydrogeology, 2020, 53:579-586. (SCI) 5) Huie Chen, Haotian Guo, Yaling Jiang, Chao Sun, Xiaoqing Yuan*. Effect of Matric Suction on Strength Characteristics of Undisturbed Unsaturated Silty Clay, Fresenius Environmental Bulletin, 2019.12, 28(12)：9327~9338. (SCI) 6) Xiao-qing Yuan, Qing Wang, Wen-xi Lu, Wen Zhang, Hui-e Chen & Ying Zhang. Indoor simulation test of step vacuum preloading for high-clay content dredger fill, Marine Georesources & Geotechnology，2018，36(1): 83-90.(SCI) 7) Wen Zhang, Qihua Zhao, Jianping Chen, Runqiu Huang, Xiaoqing Yuan*. Determining the critical slip surface of a fractured rock slope considering preexisting fractures and statistical methodology. Landslides, 2017, 14:1253–1263.(SCI)
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Projects 1. The National Natural Science Funds, Study on time effect of microstructure and consolidation model for high clay dredger fill consolidated by step vacuum preloading, 41602285, 200K, 01/2017-12/2019. 2. Science and Technology Department of Jilin Province, Micromechanism of freeze-thaw cycles effects on the dispersion characteristics of seasonal frozen soil in western Jilin Province, 20180520064JH, 100K, 01/2018-12/2019.
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Awards and Prizes 1. Wang Qing, Niu Cencen, Yuan Xiaoqing, Chen Huie, et al. Development of fast consolidation mechanism and technical method of high plasticity dredger fill, Natural Science Academic Achievement Award of Jilin Province, The second prize, 06/2013. |
