|
|
|
| STUDY OF MODEL OF SLUG TESTS PERFORMED IN WELLS WHEN WELLS SCREENED ACROSS WATER TABLE |
| GAO Bin1,2,CHEN Jiansheng1,3,CHEN Liang1,JI Chunbo1 |
(1. College of Civil and Transportation Engineering,Hohai University,Nanjing,Jiangsu 210098,China;2. Power Transmission Tower and Structure,Central Southern China Electric Power Design Institute of China,Wuhan,Hubei 430071,China;
3. School of Earth Sciences and Engineering,Hohai University,Nanjing,Jiangsu 210098,China) |
|
|
|
|
Abstract For the slug tests performed in wells screened across the water table in phreatic aquifer,the water injects into the wells through the upper and lower parts of the water table. By calculating the amount of the water flowed away from the lower part of the water table using the technique of tracer test with the concentration of solute,a new model of slug test in phreatic aquifer is built up;and the analytical solution of the new model is given. It?s different from the traditional ways to solve this problem,which usually do it by changing some coefficients to correct the radius of the wells. To demonstrate the correctness of this theory,a series of slug tests are conducfed in a fully penetrating well in the Jiangxiong Reservoir in Tibet. And then the hydraulic conductivity of the formation is calculated using the method. By comparing the result of this value to the calculating results of Bouwer-Rice slug,the results show that the proposed model can truly reflect the permeability characteristics of the formation. By analyzing the standard recovery curve of the slug test,it shows that curve can truly reflect the permeability characteristics of the aquifer when the curve decreases in a slower rate.
|
|
Received: 01 March 2012
|
|
|
|
| [1] HYDER Z,BUTLER J J. Slug tests in unconfined formations:an assessment of the Bouwer and Rice technique[J]. Ground Water and Hydrogeology,1994,33(1):16–22.
[2] 独仲德,马炳辉,姚来根,等. 确定含水层渗透系数的冲击实验方法[J]. 水科学进展,2003,14(6):759–762.(DU Zhongde,MA Binghui,YAO Laigen,et al. Slugging test method for determining permeability coefficient of unconfined aquifer[J]. Advances in Water Science,2003,14(6):759–762.(in Chinese))
[3] 原国红,马 琳. 水文地质参数自动监测处理系统的研制与应用[J]. 岩石力学与工程学报,2009,28(4):834–839.(YUAN Guohong,MA Lin. Development and application of auto hydrogeological parameters monitoring and data processing system[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(4):834–839.(in Chinese))
[4] 王锦国,周志芳,黄 勇. 基于压水试验资料的岩体透水性分形特征研究[J]. 岩石力学与工程学报,2003,22(4):562–565.(WANG Jinguo,ZHOU Zhifang,HUANG Yong. Study on permeability of rock mass based on water pressure test data by using fractal theory[J]. Chinese Journal of Rock Mechanics and Engineering,2003,22(4):562–565. (in Chinese))
[5] 沈珍瑶,谢彤芳. 确定含水层渗透系数的微水试验法[J]. 地下水,1994,16(1):4–5.(SHEN Zhenyao,XIE Tongfang. Slugging test method for determining permeability coefficient of unconfined aquifer[J]. Underground Water,1994,16(1):4–5.(in Chinese))
[6] BUTLER JR J J. The design,performance,and analysis of slug tests[M]. New York:Lewis Publishers,1998:9–10.
[7] BOUWER H,RICE R C. The Bouwer and Rice slug test-an update[J]. Ground Water,1989,27(3):304–309.
[8] 薛禹群. 地下水动力学[M]. 北京:地质出版社,1986:65–67.(XUE Yuqun. Dynamics of groundwater[M]. Beijing:Geology Publishing House,1986:65–67.(in Chinese))
[9] BOUWER H,RICE R C. A slug test for determining hydraulic conductivity of unconfined aquifers with completely or partially penetrating wells[J]. Water Resources Research,1976,12(3):423–428.
[10] LEE J Y,KIM H S,CHOI Y K,et al. Sequential tracer tests for determining water seepage paths in a large rockfill dam,Nakdong River basin,Korea[J]. Engineering Geology,2007,89(3/4):300–315.
[11] HVORSLEV J M. Time lag and soil permeability in ground-water observations[J]. U. S. Army Waterways Experiment Station,1951,36:50.
[12] BUTLER J J,HEALEY J M. Relationship between pumping-test and slug-test parameters:scale effect or artifact[J]. Ground Water,1998,36(2):305–313. |
| [1] |
WANG Zhaoyu1, 2, ZHAO Weihua1, 2*, JU Nengpan1, 2, LIN Qinghua1, 2, TAN Lin1, 2, HU Xiaolong1, 2. Constitutive model for shear creep behavior of fault gouge containing crushed rock#br#[J]. , 2026, 45(4): 1266-1276. |
|
|
|
|