Sediment size and deposition characteristics in Malaysian urban concrete drains – a case study of Kuching City

This paper highlights the results of sediment size characteristics and deposition analysis on 24 sediment samples from urban concrete drains in Kuching City. Further sampling from surrounding urban towns outside Kuching City and Penang were done for comparison. Samples were collected randomly from three land-use types (residential, commercial and industrial). Sieve analysis results had shown that most of the total samples collected (51 out of 57) were predominantly sand, followed by gravel; while silt and clay were the minor components. Unimodal characteristics were observed in 46 samples while 11 samples showed bimodal characteristics. Of the total 46 unimodal samples, 39 showed non-uniform distribution with tendency to skew to the right. Due to this, the mode grain size with characteristic diameter d45 is suggested as a much better representative size than the conventional median size d50. Factors affecting sediment deposition characteristics in urban drains are also discussed.

[1]  S. Abt,et al.  Sampling surface and subsurface particle-size distributions in wadable gravel- and cobble-bed streams for analyses in sediment transport, hydraulics, and streambed monitoring , 2001 .

[2]  N. Armitage,et al.  The measurement and reduction of urban litter entering stormwater drainage systems: Paper 1 - Quantifying the problem using the City of Cape Town as a case study , 2004 .

[3]  A. Bachoc,et al.  Trunk Sewer Clogging Development – Description and Solutions , 1992 .

[4]  M. Fienen,et al.  Regression Modeling of Particle Size Distributions in Urban Storm Water: Advancements through Improved Sample Collection Methods , 2012 .

[5]  Neil McIntyre,et al.  A database and model to support proactive management of sediment-related sewer blockages. , 2012, Water research.

[6]  Nor Azazi Zakaria,et al.  Sediment size characteristics of urban drains in Malaysian cities , 2000 .

[7]  Nor Azazi Zakaria,et al.  Sediment deposition in a rigid monsoon drain , 2008 .

[8]  Michel Verbanck,et al.  Sewer Sediment and its Relation with the Quality Characteristics of Combined Sewer Flows , 1990 .

[9]  Nor Azazi Zakaria,et al.  Performance of a dry detention pond: case study of Kota Damansara, Selangor, Malaysia , 2012 .

[10]  Richard Ashley,et al.  The Deposition and Erosion of Sediments in Sewers , 1992 .

[11]  R. W. Crabtree,et al.  Sediments in Sewers , 1989 .

[12]  Panayiotis Diplas,et al.  Bedload transport in gravel-bed streams with unimodal sediment , 2003 .

[13]  G. Bönisch,et al.  Model-based assessment of sediment sources in sewers , 2008 .

[14]  C Nalluri,et al.  SEDIMENT TRANSPORT IN SMOOTH FIXED BED CHANNELS , 1975 .

[15]  T. Dalenius.  The Mode—A Neglected Statistical Parameter , 1965 .

[16]  Anne Marsden,et al.  International Organization for Standardization , 2014 .

[17]  N. Armitage,et al.  The removal of urban litter from stormwater conduits and streams: Paper 1 - The quantities involved and catchment litter management options , 2000 .

[18]  Richard Field,et al.  Sewer-Sediment Control: Overview of an Environmental Protection Agency Wet-Weather Flow Research Program , 2003 .

[19]  R. Ferguson,et al.  Measuring and defining bimodal sediments: Problems and implications , 1997 .

[20]  Richard Ashley,et al.  The Erosion and Movement of Sediments and Associated Pollutants in Combined Sewers , 1992 .

[21]  Mukand S. Babel,et al.  Non-deposition design criteria for sewers with part-full flow , 2010 .

[22]  Robert Banasiak.  Hydraulic performance of sewer pipes with deposited sediments. , 2008, Water science and technology : a journal of the International Association on Water Pollution Research.

[23]  N. Armitage.  The reduction of urban litter in the stormwater drains of South Africa , 2007 .

[24]  Thorkild Hvitved-Jacobsen,et al.  European Research into Sewer Sediments and Associated Pollutants and Processes , 2003 .

[25]  R Ashley,et al.  Sewer solids-20 years of investigation. , 2005, Water science and technology : a journal of the International Association on Water Pollution Research.

[26]  A. J. Sutherland,et al.  Sampling Techniques for Gravel Sized Sediments , 1988 .

[27]  E. Creaco,et al.  Laboratory investigation on the effects of flushes on cohesive sediment beds , 2008 .

[28]  Richard May,et al.  Self-Cleansing Sewer Design Based on Sediment Transport Principles , 2003 .

[29]  Jasem M. Alhumoud,et al.  Representative Particle Size of Sediment in Storm Sewer Inlets , 2010 .

[30]  P. Diplas,et al.  Approach to Separate Sand from Gravel for Bed-Load Transport Calculations in Streams with Bimodal Sediment , 2006 .

[31]  G. Mathias Kondolf,et al.  The sizes of salmonid spawning gravels , 1993 .