Temperature field distribution of a freeze sinking shaft under seepage conditions in cretaceous formation of Western China

Temperature field distribution of a freeze sinking shaft under seepage conditions in cretaceous formation of Western China

Yao Wei Lei Wang Gengshe Yang 

School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China

Corresponding Author Email: 
wls3016@163.com
Page: 
1055-1060
|
DOI: 
https://doi.org/10.18280/ijht.360336
Received: 
8 January 2018
| |
Accepted: 
10 May 201
| | Citation

OPEN ACCESS

Abstract: 

This paper attempts to disclose the distribution law of artificial freezing temperature field in Cretaceous sandstone of western China and determine the key parameters of freeze sinking. For this purpose, a numerical model was established in light of the general conditions of freeze sinking project, the model parameters were optimized according to onsite monitored data, and the optimized model was applied to explore the change law of the freezing temperature field. The simulation reveals that the temperature of each measuring point decreased linearly with time, but the mean daily decline differed from point to point: the daily decline is negatively correlated to the distance from the freezing point, i.e. the temperature is positively correlated to the distance from the freezing point at the same time. The freezing time for closure was 79d at the groundwater flow rate of 50m/d. When the freezing intensity was weak (freezing tube temperature: -22℃), the frozen wall failed to achieve closure. This means the groundwater directly bears on the distribution of the temperature field. The freezing intensity has a nonlinear impact on the temperature field. The higher the temperature, the smaller the impact on the closure.

Keywords: 

artificial freezing, temperature field, seepage, closur

1. Introduction
2 Site Monitoring and Analysis of Freeze Sinking
3 Simulation and Analysis of Freezing Shaft Temperature Field
4 Conclusions
Acknowledgements

This paper is made possible thanks to the generous support from National Natural Science Foundation of China (Grant No.: 51404193), General Project of China Postdoctoral Fund (Grant No.: 2015M572581), and Youth Talent Project of Shaanxi Provincial Natural Science Foundation (Grant No.: S2015YFJQ1194).

  References

[1] Hu XD, Fang T, Han YG. (2017). Generalized analytical solution for steady state temperature field of annular double loop tube freezing. Journal of Coal 42(9): 2287-2294. https://doi.org/10.13225/j.cnki.jccs.2016.1628

[2] Hu XD, Han YG. (2015). General analytical solution to steady-state temperature field of single-circle-pipe freezing. Zhongnan Daxue Xuebao Journal of Central South University: Sciences & Stechnology 46(6): 2342-2349. https://doi.org/10.11817/j.issn.1672-7207.2015.06.047

[3] Li GF, Li N, Liu NF. (2017). A simplified three phase field coupling algorithm based on FLAC3D. Chinese Journal of Rock Mechanics and Engineering (a02): 3841-3851.

[4] Shi RJ, Yue FT, Zhang Y. (2014). Distribution characteristics of temperature field in inclined shaft with liquidnitrogen reinforcement. Chinese Journal of Rock Mechanics and Engineering 33(3): 567-574.

[5] Chen JH, Li DW. Temperature field frozen with multi-circle pipes in shaft sinking: feature analysis and engineering application. Journal of Glaciology and Geocryology 38(6): 1568-1574. https://doi.org/10.7522/j.issn.1000-0240.2016.0183

[6] Chen JH, Liu TY, Li DW. (2017). Study on artificial three-tube freezing model test and freeze program. Coal Science and Technology 45(12): 94-100.

[7] Yang GS, Qu YL, Xi JM, Li B. (2014). In-situ measurement and study of freezing pressure of shaft in western cretaceous water-rich bedrock. Journal of Mining & Safety Engineering 31(6): 982-987.

[8] Xiang Z. (2012). Obseration and analysis of the temperature field of host well tube frozen by stages. Journal of Glaciology and Geocryology 34(5): 1179-1183.

[9] Qing F. (2012). Cretaceous strata double lining structure optimization design. Anhui: AnHui University of Science and Technology.

[10] Ren JX, Sun JL, Zhang K. (2017). Mechanical properties and temperature field of inclined frozen wall in water-rich sand stratum. Rock and Soil Mechanics 38(5): 1405-1412. https://doi.org/10.16285/j.rsm.2017.05.023

[11] Sheng TB, Wei SY. (2012). Measurement and engineering application of temperature field multiple-ring hole frozen wall in extra-thick clay strata. Chinese Journal of Geotechnical Engineering 34(8): 1516-1521.

[12] Zhang S, Zhao T, Li F. (2018). Mechanical equipment vibration condition monitoring of holographic spectrum technology and shafting space vibration mode based on the microsoft visual studio.net environment. Chemical Engineering Transactions 66: 733-738. https://doi.org/10.3303/CET1866123

[13] Jusoh M, Mohamed NN, Yahya N, Musa R, Mohamad Z, Ngadi N, Rahman RA, Johari A, Zakaria ZY. (2018), Process optimisation of effective partition constant in coconut water via progressive freeze concentration. Chemical Engineering Transactions 63: 403-408, https://doi.org/10.3303/CET1863068