UROP Proceedings 2010-11

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Innovative Iron-based Process for Odor Control in Storm Water Drain inTidal AreasAdvisor : SHANG Chii / CIVLStudent : SU Qida / CIVL(UROP1000, Summer 2011)Odor nuisance from box culverts has long been recognized by the public as a problem inHong Kong. Organic matters, tidal seawater and sulfate-reducing bacteria are the three factorswhich cause odor nuisance. Using chemical oxidants such as oxygen, chlorine and ferric saltsare useful for suppressing the odor; however, some of these chemicals are toxic, expensive,and may have low solubility in water and high energy requirement. Therefore, an innovative,low-cost and long-lasting granular iron-based technology is needed to resolve the odornuisance. The objective of this study is to develop a technology using granular ferrichydroxide (GFH) for sulfide control. In detail, it needs to be proved that GFH can helpremove the sulfide in sediment and can be reused.Set-up Effect of Displacement Pile in SandAdvisor : WANG Yu-Hsing / CIVLStudent : LI Ngan Fei / CIVL(UROP1000, Summer 2011)The capacity of displacement piles in sand has been found to increase with time elapsed sincethe end of driving. Such an increase in pile capacity is known as pile setup and is not due tothe dissipation of excess pore water pressure induced by pile installation. Similar findings arereported around the world. However, this extra pile capacity, which may lead to significantsavings in construction cost and time, has not been taken into account in the pile designbecause there is still no conclusion for the associated underlying mechanisms. In order tohave a better understanding about the cause of pile setup, further investigations are carried outin this study. This study begins with a comprehensive literature review and then proposes anexperiment using the techniques of tomography images to characterize the process of pilesetup.The Application of Time-lapse Resistivity Mapping: Soil ResistivityChanges with Water ContentAdvisor : WANG Yu-Hsing / CIVLStudent : LI Wu / CIVL(UROP1000, Summer 2011)Slope stability issues are intimately related to how the water front saturates the slope soil andthen decreases the associated effective stress (strength) at the sliding surface. Since the soilresistivity is significantly affected by the water content, the time-lapse resistivity mapping onslope can be an effective technique to monitor the associated water front movement along aslope. The capacitively-coupled resistivity meter, OhmMapper, is used for such a purpose inthis study. The preliminary testing results on a natural slope have proved the feasibility of thismethodology. Distinct differences in the resistivity mapping on the slope can be measuredbefore and after a rainfall event.33
DEM Simulations on Biaxial Tests of Dense and Loose SandAdvisor : WANG Yu-Hsing / CIVLStudent : TAM Pak On / CIVL(UROP1000, Summer 2011)Distinct Element Method (DEM), a computer-aided numerical simulation method thatconsiders every individual particle, is being used in the study of geotechnical problems bothin research and industry. With the use of software PCF2D, which performs two-dimensionalsimulation, “disks” of specific parameters such as density, radius and friction coefficient canbe generated and resembled as soil particle packing. “Walls” can also be generated andresembled as the boundary conditions of the generated soil sample. In this project, DEMsimulations are used to model the biaxial tests on dense and loose soil samples. Thesimulation results show a good agreement with the experimental observations.Risk Assessment for Rainfall-induced Landslides in Yin Chang GouRavine near YingxiuAdvisor : ZHANG Li Min / CIVLStudents : HUANG Junjie / CIVL(UROP1000, Summer 2011)WEI Jiaying / CIEV(UROP1000, Summer 2011)YEUNG Ying Tung / CIVL(UROP1000, Summer 2011)This project presents an assessment of risks of loose soil deposits in the Ying Chang Gou areaafter the 2008 Wenchuan earthquake, particularly along the Provincial Road 303. A GISplatform is used to identify those loose deposits formed on the steep terrains during theearthquake. Besides, the stability of these deposits under different rainfall conditions isevaluated and the safety status is analyzed. The failure mode of these loose deposits isassumed to be shallow-seated for simplicity, therefore, these deposits can be considered asinfinite slopes. After that, the run-out distances of any failed deposits and the vulnerability canbe estimated, and the risks to passengers travelling on the road are assessed. Strategies arealso suggested to reduce the risks.34
Page 4 and 5: Message from the PresidentUROP is a
Page 6 and 7: School ofScience
Page 8 and 9: After a month of screening, some pu
Page 10: Water Quality Survey for Hong Kong'
Page 14 and 15: Study of Blood Cell Development usi
Page 16 and 17: Department of MathematicsSpace Orbi
Page 18 and 19: Report on Lunar Crater ProjectAdvis
Page 20 and 21: Efficient Numerical Methods for Dyn
Page 22 and 23: Department of PhysicsNear-Field Sca
Page 24 and 25: Kinetic Monte Carlo Simulation of S
Page 26 and 27: Random Walk on Complex Network and
Page 28 and 29: Manufacture of Photoic Crystals and
Page 30 and 31: School ofEngineering
Page 32 and 33: Techno-economic Analysis of Hydroge
Page 34 and 35: Heavy Metal Adsorption from Seawate
Page 36 and 37: Reformation of Antimicrobial Coatin
Page 40 and 41: Department of Computer Science and
Page 42 and 43: An Investigation to Simplex Minimiz
Page 44 and 45: Distributive Name ServiceAdvisor :
Page 46 and 47: “Where To”: A Collaborative And
Page 48 and 49: Light Carving: Rich Object Scanning
Page 50 and 51: Sparse Matrix CompletionAdvisor : Y
Page 52 and 53: Optical Property Investigation of N
Page 54 and 55: Opto-Mechanical Oscillator with Dir
Page 56 and 57: Capture the FlagAdvisor : SHI Ling
Page 58 and 59: Building a Servo Robot SystemAdviso
Page 60 and 61: Department of Industrial Engineerin
Page 62: Digital Image Correlation Method fo
Page 65 and 66: Department of AccountingSchool of B
Page 67 and 68: Department of EconomicsThe Microeco
Page 69 and 70: Department of Information Systems,
Page 71 and 72: Financial Risk ManagementAdvisor :
Page 73 and 74: Consumer Shopping Behavior in Inter
Page 75 and 76: Consumer NostalgiaAdvisor : HONG Ji
Page 77 and 78: Lay Theory of ObesityAdvisor : MUKH
Page 79 and 80: Multiculturalism, Social Judgments
Page 81 and 82: School of Humanities and Social Sci
Page 83 and 84: China/Africa Links ProjectAdvisor :
Page 85 and 86: Housing Policy, Home Ownership Sche
Page 87 and 88: Psychology of HappinessAdvisor : TA
Page 89:
Facial Expressions of EmotionsAdvis
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UROP Proceedings 2010-11

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