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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (8): 1437-1443    DOI: 10.3785/j.issn.1008-973X.2012.08.013
土木工程     
定流量下承压层环向非完整井流理论及应用
黄大中, 谢康和, 应宏伟, 胡安峰
浙江大学 岩土工程研究所,软弱土与环境土工教育部重点实验室,浙江 杭州 310058
Theory and application of circularly partial penetrating well flow in
a confined aquifer under constant pumping rate
HUANG Da-zhong, XIE Kang-he, YING Hong-wei, HU An-feng
MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering,
Zhejiang University, Hangzhou 310058, China
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摘要：

考虑井壁沿环向一部分不透水,建立定流量下承压层环向非完整井模型,应用Laplace变换和Fourier变换得到井流问题的半解析解,并获得特殊情况下的近似解.基于所得半解析解,分析环向非完整区对流场状况的影响以及影响程度沿径向的分布和随时间的变化.计算结果表明,环向的非完整性使流场产生明显的空间分布差异,会导致定流量井流实验时应用完整井理论估算得到的含水层参数产生偏差.针对这一问题,提出减小误差的方法.环向非完整井的流场特性可用于基坑降水,以增加基坑内的降水深度而减小基坑外的降水深度,通过算例对降水效果进行验证.
Abstract:

Considering part of the well wall was impervious in the circular direction, a circularly partial penetrating well model in a confined aquifer under constant pumping rate was set up. A semi-analytical solution of the well flow problem was obtained using Laplace transform and Fourier transform technique, and approximate solutions were available in some special situations. The effects of circularly partial penetrating area on flow field were analyzed based on the semi-analytical solution. The distribution of the degree of the effects in the radial direction and the development of those with time were also analyzed. The calculations show that great disturbs on flow field could be caused by circularly partial penetration, which would result in estimation errors of aquifer parameters when using full penetrating well theory in the constant discharge pumping test. A modified method was proposed for the problem. The character of the flow field of circularly partial penetrating well could be used for dewatering in the foundation pit, to increase the drawdown in the pit and decrease the drawdown out of the pit. The results of pit dewatering using this method were examined through the calculations of an example.
出版日期: 2012-09-23
:  TU 46  
基金资助:

浙江省自然科学基金重点资助项目(Z5080175).
通讯作者: 谢康和,男,教授，博导.     E-mail: zdkhxie@zju.edu.cn
作者简介: 黄大中(1987—),男,博士生,研究方向为地基处理、抽水引起的地面沉降等.E-mail: huangdz05@163.com
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引用本文:

黄大中, 谢康和, 应宏伟, 胡安峰. 定流量下承压层环向非完整井流理论及应用[J]. J4, 2012, 46(8): 1437-1443.

HUANG Da-zhong, XIE Kang-he, YING Hong-wei, HU An-feng. Theory and application of circularly partial penetrating well flow in
a confined aquifer under constant pumping rate. J4, 2012, 46(8): 1437-1443.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.08.013    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I8/1437

［1］ 陈崇希,林敏.地下水动力学［M］.武汉:中国地质大学出版社,1999, 70-97.
［2］ 孔祥言.高等渗流力学［M］.安徽:中国科技大学出版社,2010, 1-11.
［3］ NARASIMHAN T N. Hydraulic characterization of aquifers, reservoir rocks, and soils: A history of ideas ［J］. Water Resources Research, 1998, 34(1): 33-46.
［4］ HOUBEN G J. The influence of well hydraulics on the spatial distribution of well incrustations ［J］. Ground Water, 2006, 44(5): 668-675.
［5］ HOUBEN G J, WEIHE U. Spatial distribution of incrustations around a water well after 38 years of use ［J］. Ground Water, 2010, 48(1): 53-58.
［6］ 恰尔内. 地下水气动力学［M］. 北京: 石油工业出版社, 1982, 154-191.
［7］ 毛根海,宋建锋,姚懿伦,等.回灌技术在基坑工程中的应用研究［J］.浙江大学学报:工学版,2005, 39(1): 165-168.
MAO Genhai, SONG Jianfeng, YAO Yilun, et al. Research on a application of recharging technique in excavation engineering ［J］. Journal of Zhejiang University: Engineering Science, 2005, 39(1): 165-168.
［8］ 骆祖江,刘金宝,李朗.第四纪松散沉积层地下水疏降与地面沉降三维全耦合数值模拟［J］.岩土工程学报, 2008, 30(2): 193-198.
LUO Zujiang, LIU Jinbao, LI Lang. Threedimensional full coupling numerical simulation of groundwater dewatering and landsubsidence in quaternary loose sediments ［J］. Chinese Journal of Geotechnical Engineering, 2008, 30(2): 193-198.
［9］ 胡欣.基坑降水对周围地面沉降的控制研究［D］.天津：天津大学, 2010.
HU Xin. Control of land subsidence of around the foundation pit precipitation［D］. Tianjin: Tianjin University, 2010.
［10］ 邸国恩,黄炳德,王卫东.敏感环境条件下深基坑工程设计与实践［J］.岩土工程学报,2010, 32(增刊1): 383-387.
DI Guoen, HUANG Bingde, WANG Weidong. Design and application of the deep excavation in sensitive environment ［J］. Chinese Journal of Geotechnical Engineering, 2010, 32(Supp.1): 383-387.
［11］ 章昕.深基坑降水技术浅析［J］.岩土工程学报,2010, 32(增刊2): 443-446.
ZHANG Xin. Dewater technique in deep foundation pit［J］. Chinese Journal of Geotechnical Engineering, 2010, 32(Supp.2): 443-446.
［12］ 赵雪萍.基坑安全降水的工程措施研究［D］.郑州：郑州大学, 2007.
ZHAO Xueping. Study on engineering measures of pit security precipitation［D］. Zhengzhou： Zhengzhou University, 2007.
［13］ VAN EVERDINGEN A F, HURST W. The application of the Laplace transformation to flow problems in reservoirs ［J］. Petroleum Transactions. AIME, 1949, 186: 305-324.
［14］ TALBOT A. The accurate numerical inversion of Laplace transforms ［J］. IMA Journal of Applied Mathematics, 1979, 23: 97-120.
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