2013 Vol. 6, No. 4

  Previous Issue | Next Issue 
Display Method:
Direct numerical simulation of matrix diffusion across fracture/matrix interface
Yong ZHANG, Eric M. LABOLLE, Donald M. REEVES, Charles RUSSELL
2013, 6(4): 365-379. doi: 10.3882/j.issn.1674-2370.2013.04.001
Abstract(2116) PDF(2129)
Abstract:
Accurate descriptions of matrix diffusion across the fracture/matrix interface are critical to assessing contaminant migration in fractured media. The classical transfer probability method is only applicable for relatively large diffusion coefficients and small fracture spacings, due to an intrinsic...
Uncertainty analysis of seawater intrusion forecasting
Zhong-wei ZHAO, Jian ZHAO, Chang-sheng FU
2013, 6(4): 380-391. doi: 10.3882/j.issn.1674-2370.2013.04.002
Abstract(2150) PDF(2162)
Abstract:
In order to describe the importance of uncertainty analysis in seawater intrusion forecasting and identify the main factors that might cause great differences in prediction results, we analyzed the influence of sea level rise, tidal effect, the seasonal variance of influx, and the annual variance of...
An improved genetic algorithm for searching for  pollution sources
Quan-min BU, Zhan-jun WANG, Xing TONG
2013, 6(4): 392-401. doi: 10.3882/j.issn.1674-2370.2013.04.003
Abstract(1928) PDF(2183)
Abstract:
As an optimization method that has experienced rapid development over the past 20 years, the genetic algorithm has been successfully applied in many fields, but it requires repeated searches based on the characteristics of high-speed computer calculation and conditions of the known relationship betw...
Optimal dosing time of acid algaecide for restraining algal growth
Cui-chao PANG, Xin-jian FAN, Jie ZHOU, Shi-qiang WU
2013, 6(4): 402-408. doi: 10.3882/j.issn.1674-2370.2013.04.004
Abstract(1691) PDF(2128)
Abstract:
Restraining algal growth by algaecide has been studied by many researchers, but the dosing time has not yet been studied. In this study, we examined the appropriate dosing time of algaecide through a series of experiments. In the experiments, the pH value of water is significantly affected by Microc...
Seismic response of concrete gravity dam reinforced with FRP sheets on dam surface
Hong ZHONG, Na-li WANG, Gao LIN
2013, 6(4): 409-422. doi: 10.3882/j.issn.1674-2370.2013.04.005
Abstract(2288) PDF(1880)
Abstract:
This paper aims at exploring the effects of anti-seismic reinforcement with the fiber-reinforced polymer (FRP) material bonded to the dam surface in dam engineering. Time-history analysis was performed to simulate the seismic failure process of a gravity dam that was assumed to be reinforced at the ...
Study of heat treatment parameters for large-scale hydraulic steel gate track 
Ping-zhou CAO, Guang-zhong LIU, Kai WU
2013, 6(4): 423-432. doi: 10.3882/j.issn.1674-2370.2013.04.006
Abstract(1941) PDF(2300)
Abstract:
In order to enhance external hardness and strength, a large-scale hydraulic gate track should go through heat treatment. The current design method of hydraulic gate wheels and tracks is based on Hertz contact linear elastic theory, and does not take into account the changes in mechanical properties ...
Numerical simulation of low-Reynolds number flows past two tandem cylinders of different diameters
Yong-tao WANG, Zhong-min YAN, Hui-min WANG
2013, 6(4): 433-445. doi: 10.3882/j.issn.1674-2370.2013.04.007
Abstract(2876) PDF(3062)
Abstract:
The flow past two tandem circular cylinders of different diameters was simulated using the ?nite volume method. The diameter of the downstream main cylinder (D) was kept constant, and the diameter of the upstream control cylinder (d) varied from 0.1D to D. The studied Reynolds numbers based on the d...
Fractional description of mechanical property evolution of soft soils during creep
De-shun YIN, Yan-qing LI, Hao WU, Xiao-meng DUAN
2013, 6(4): 446-455. doi: 10.3882/j.issn.1674-2370.2013.04.008
Abstract(1947) PDF(2315)
Abstract:
The motion of pore water directly influences mechanical properties of soils, which are variable during creep. Accurate description of the evolution of mechanical properties of soils can help to reveal the internal behavior of pore water. Based on the idea of using the fractional order to reflect mec...
Formulation of cross-anisotropic failure criterion for soils
Yi-fei SUN, Han-long LIU, Gui YANG, Yang XIAO
2013, 6(4): 456-468. doi: 10.3882/j.issn.1674-2370.2013.04.009
Abstract(2065) PDF(3295)
Abstract:
Inherently anisotropic soil fabric has a considerable influence on soil strength. To model this kind of inherent anisotropy, a three-dimensional anisotropic failure criterion was proposed, employing a scalar-valued anisotropic variable and a modified general three- dimensional isotropic failure crit...
θ-improved limited tolerance relation model of incomplete information system for evaluation of water conservancy project management modernization
Yu-qin GAO, Guo-hua FANG, Ya-qin LIU
2013, 6(4): 469-477. doi: 10.3882/j.issn.1674-2370.2013.04.010
Abstract(1963) PDF(1981)
Abstract:
The modernization of water conservancy project management is a complicated engineering system involving a management system, a management method, management personnel, the exertion of social, economic, and ecological effects, and so on. However, indices for evaluating the modernization of water cons...

Copyright © 2009 Editorial office of Water Science and Engineering 苏ICP备12023610号-1

Supported by: Beijing Renhe Information Technology Co. Ltd   support: info@rhhz.net