Theory of artesian well flow in ancient river in Wuhan and its application in foundation pit dewatering

LÜ Bin-quan; FENG Xiao-la; XIONG Zong-hai

doi:10.11779/CJGE202003015

Volume 42 Issue 3

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2020 > 42(3): 533-541. > DOI: 10.11779/CJGE202003015

LÜ Bin-quan, FENG Xiao-la, XIONG Zong-hai. Theory of artesian well flow in ancient river in Wuhan and its application in foundation pit dewatering[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(3): 533-541. DOI: 10.11779/CJGE202003015

Citation:

PDF (1260 KB)

Theory of artesian well flow in ancient river in Wuhan and its application in foundation pit dewatering

1.
Department of Engineering, China University of Geosciences, Wuhan 430074, China
2.
Wuhan FengDa Geological Engineering Ltd, Wuhan 430074, China

More Information

Received Date: June 04, 2019
Available Online: December 07, 2022

Graphical Abstract

Abstract

Abstract

Based on the analysis of the special hydrogeological conditions of an ancient river in Wuhan, a hydrogeological model for the ancient river is established. The problem of artesian well flow in the ancient river is generalized to that of groundwater movement to pumping wells in belt-like artesian aquifers. Then, based on the principle of mirror method and the potential function, the formulas of steady flow for artesian and artesian-unartesian completely penetrating wells in the ancient river are derived. On this basis, it is applied to the foundation pit dewatering project, and a method for calculating the water inflow of the foundation pit of artesian aquifers in the ancient river is put forward. Finally, taking the deep foundation pit of the underground parking lot of Liyuan Plaza in Wuhan as an example, the calculated results are compared with those of the traditional methods and the actual monitoring data. The results show that the relative error between the calculated results and the actual water inflow of the foundation pit is only 7.4%, while the relative error of the traditional method is 54.5%, which verifies the rationality of the proposed method. The research results are of great significance for understanding the theory of artesian well flow in ancient rivers and for guiding the design of foundation pit dewatering projects.
- ancient river,
- artesian water,
- well flow,
- completely penetrating well,
- steady flow,
- foundation pit dewatering

FullText(HTML)

References (18)

References

[1]	范士凯, 杨育文. 长江一级阶地基坑地下水控制方法和实践[J]. 岩土工程学报, 2010, 32(增刊1): 63-68. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2010S1013.htm FAN Shi-kai, YANG Yu-wen. Groundwater control and practice of deep foundation pits in terrace along Yangtze River[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 63-68. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2010S1013.htm
[2]	徐杨青, 朱小敏. 长江中下游一级阶地地层结构特征及深基坑变形破坏模式分析[J]. 岩土工程学报, 2006, 28(增刊1): 1794-1798. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2006S1109.htm XU Yang-qing, ZHU Xiao-min. Structural characteristics of the first terrace strata in the middle and lower reaches of the Yangtze River and analysis of deformation and failure modes of deep foundation pits[J]. Journal of Geotechnical Engineering, 2006, 28(S1): 1794-1798. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2006S1109.htm
[3]	蔡娇娇, 冯晓腊, 李滕龙, 等. 武汉一级阶地基坑降水引起土层水位变化及压缩变形研究[J]. 水文地质工程地质, 2018, 45(2): 90-95. https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG201802014.htm CAI Jiao-jiao, FENG Xiao-la, LI Teng-long, et al. Study on the variation of soil water level and compression deformation caused by dewatering of first-order foundation pits in Wuhan[J]. Hydrogeology, Engineering Geology, 2018, 45(2): 90-95. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG201802014.htm
[4]	马郧, 徐光黎, 刘佑祥. 长江I级阶地某深基坑地下水控制分析[J]. 安全与环境工程, 2012, 19(5): 144-149. doi: 10.3969/j.issn.1671-1556.2012.05.036 MA Yun, XU Guang-li, LIU You-xiang. Groundwater control analysis of a deep foundation pit in Grade I terrace of the Yangtze River[J]. Safety and Environmental Engineering, 2012, 19(5): 144-149. (in Chinese) doi: 10.3969/j.issn.1671-1556.2012.05.036
[5]	童立元, 郑灿政, 张明飞, 等. 地铁车站止水帷幕对南京秦淮河古河道地下水流场的影响分析[J]. 东南大学学报(自然科学版), 2016, 46(增刊1): 190-196. https://www.cnki.com.cn/Article/CJFDTOTAL-DNDX2016S1034.htm TONG Li-yuan, ZHENG Can-zheng, ZHANG Ming-fei, et al. Analysis of the influence of water stop curtain on the groundwater flow field of the ancient Qinhuai River in Nanjing[J]. Journal of Southeast University (Natural Science Edition), 2016, 43(S1): 190-196. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DNDX2016S1034.htm
[6]	徐耀德, 童利红. 利用Modflow预测某基坑降水引起的地面沉降[J]. 水文地质工程地质, 2004(6): 96-98. https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG200406022.htm XU Yao-de, TONG Li-hong. Prediction of land subsidence caused by dewatering of a foundation pit by Modflow[J]. Hydrogeology and Engineering Geology, 2004(6): 96-98. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG200406022.htm
[7]	TAN C C, TUNG C P, TSAI T C. Applying zonation methods and tabu search to improve the ground-water modeling[J]. Journal of the American Water Resources Association, 2008, 44(1): 107-120.
[8]	尹盛斌, 丁红岩. 软土基坑开挖引起的坑外地表沉降预测数值分析[J]. 岩土力学, 2012(4): 1210-1216. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201204038.htm YIN Sheng-bin, DING Hong-yan. Numerical analysis of estimation of ground surface settlement outside pit induced by soft-soil excavation[J]. Geotechnical Mechanics, 2012(4): 1210-1216. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201204038.htm
[9]	建筑基坑支护技术规程：JGJ120—2012[M]. 2012. Technical Regulations for Foundation Pit Support of Buildings: JGJ120—2012[M]. 2012. (in Chinese)
[10]	SEDGHI M M, SAMANI N. Three-dimensional semi- analytical solutions of groundwater flow to a well in fractured wedge-shaped aquifers[J]. Journal of Hydrologic Engineering, 2010, 15(12): 974-984.
[11]	WANG L, DAI C, XUE L. A semianalytical model for pumping tests in finite heterogeneous confined aquifers with arbitrarily shaped boundary[J]. Water Resources Research, 2018, 54(4): 3207-3216.
[12]	ZAREI D S, SAMANI N. Capture zone of a multi-well system in bounded peninsula-shaped aquifers[J]. Journal of Contaminant Hydrology, 2014, 164: 114-124.
[13]	CHUANG M H, YEH H D. An analytical solution of groundwater flow in wedge-shaped aquifers with estuarine boundary conditions[J]. Water Resources Management, 2018, 32(15): 5027-5039.
[14]	邓健如, 伍维周. 长江武汉河段的形成和贯通时间[J]. 湖北大学学报(自科版), 1992(4): 414-418. https://www.cnki.com.cn/Article/CJFDTOTAL-HDZK199204023.htm DENG Jian-ru, WU Wei-zhou. Formation and running-through time of Wuhan Reach of Yangtze River[J]. Journal of Hubei University (Self-Science Edition), 1992(4): 414-418. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HDZK199204023.htm
[15]	李英, 何忠泽, 严桂华, 等. 武汉二元结构地层基坑降水及其地面沉降研究[J]. 岩土工程学报, 2012, 34(增刊1): 767-772. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2012S1149.htm LI Ying, HE Zhong-ze, YAN Gui-hua, et al. Study on dewatering and land subsidence of foundation pit in dualistic structure stratum[J]. Journal of Geotechnical Engineering, 2012, 34(S1): 767-772. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2012S1149.htm
[16]	陈崇希, 林敏. 地下水动力学[M]. 5版.北京: 地质出版社, 2011. CHEN Chong-xi, LIN Min. Groundwater Dynamics[M]. 5th ed. Beijing: Geological Press, 2011. (in Chinese)
[17]	CHEN C, HU L, WANG X. Analysis of steady ground water flow toward wells in a confined‐unconfined aquifer[J]. Groundwater, 2010, 44(4): 609-612.
[18]	刘国彬, 王卫东. 基坑工程手册[M]. 北京: 中国建筑工业出版社, 2009. LIU Guo-bin, WANG Wei-dong. Manual of Foundation Pit[M]. Beijing: China Architecture Building Press, 2009. (in Chinese)