Numerical Analysis for Displacement Law of Deep Alluvium Frozen Wall in Thousand Metres Vertical Well

Abstract:

During freezing sinking, the displacement and affecting factors of deep alluvium frozen soil wall was a technical problem which need to be resolved. Based on designing frozen soil wall in deep alluvium in thousand metre vertical wall, making use of mathematic simulation software of FLAC after selected ten samples from exceeding 400metres depth as calculation model, which the frozen clay creep parameters with finite transformation considered, the maximum radial displacement was obtained. The factors affecting it such as frozen soil thick, height of deep alluvium, segment height, exposure time and excavated radius were utilized. The mathematic formula was acquired with regression analysis through fifty datas, and detected with in-situ measurement data. The result of two types coincids, which indicates it can provide conducting in designing frozen soil wall under similar geoloical projects.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 2634-2637
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.2634
• Online since: May 2011
• Authors: Jun Wang, Hong Guang Ji, Chuan Qing Wang, Kaiyun Luan
• Keywords: Deep Alluvium, Displacemen of Frozen Soil Wall, Numerical Analysis

References

[1] Hong Boqian. Journal of China Coal, 2000,26(4):5-9. (in Chinese)

[2] Guo Ruiping,Li Guangxin. Journal of Huainan Mining Institute, 1997,17（3）:22-26. (in Chinese)

[3] Yang Weihao,Huang Jiahui. Journal of Glaciology and Geocryology, 1999,21(1):33. (in Chinese)

[4] LI Gongzhou. Journal of China Coal Society，2001,26(3):258-264. (in Chinese)

[5] GUORuiping,HUOLeisheng. Mining and Metallurgical Engineering, 1999,19(4):6-8. (in Chinese)

[6] RONGCHan-xin.Astudy on mechanical characteristic of frozen soil wall and shaft lining as well as their interaction mechanism in deep alluvium[D]. Hefei University science and technology of Hefei ,2006. (in Chinese)

[7] ZhangXiangdong,zhangshuguang,Liyongjing,et al. Chinese Journalof Rock Mechanics and Engineering, 2004,23(3):395-400. (in Chinese)

[8] ZHOUKailong. A study on the effect of different section height of the shaft in deep alluvium[D]. Beijing: University of science and technology Beijing，2006. (in Chinese)