Consultancy Services For Physical Hydraulic And Hydrological Model Of Sukkur Barrage For Furture StudiesRequest For Expression Of Interest Reoi For Procurement Of Consultancy Services ForPhysical Hydraulic Model Study Of Sukkur BarrageAssignment Country PakistanName Of Project Sindh Barrages Improvement Project Additional Financing Under Ida Credit No 62420 Pak Reference No Pk Afof Sbip 145949 Cs CqsEnsure Safety Of Sukkur Barrage To Enhance Monitoring Capability Of Three Barrages In Sindh For Improved Barrage Operation And Conduct Additional Technical Studies Including River Basin And Riverine Area Management The Broad Goal Is To Uplift The Agro Based Economy At Provincial Level Thereby Ensuring Growth In National Gdp By Increased Share Of Agricultural Produce From Sindh The Government Of Sindh Intends To Apply Part Of Proceeds Of The Credit For Carrying Out The Physical Hydraulic Modeling Study Of Sukkur Barrage At A Reputed Laboratory Which Is Covered Under Sbip Af This Study Is Aimed At Obtaining An Independent Confirmation Of Right Bank River Training Works Proposed By M S Atkin Ace Ndc Joint Venture Consultants In Their Feasibility Report 2015 For Increasing The Flood Handling Capacity Of Barrage To 1 5 Million Cusecs And Enabling Better Silt Management In Right Bank Canals Sukkur Barrage Is Located About 225 Air Miles North East Of Karachi 68 50 44 E 27 40 48 N In The Sindh Province Of Pakistan The Barrage Comprises Of A 66 Spans Main Barrage 4 725Ft Approx 1 4 Km Long Constructed Across River Indus At Sukkur In 1932 The Canal Head Regulator Structures On Both The Banks Assisted By Respective Divide Walls Control Flow In The Three Right Bank Canals And Four Left Bank Canals The River Training Works Constructed In 1939 40 To Control Silt Entry Into Right Bank Canals Upstream Of The Main Barrage Comprise Of A Submerged Weir And Approach Tail Channel With Outer And Middle Banks Within The River And An Inner Bank Adjacent With The Right Guide Bank An Island Was Also Created Between The Middle Bank And Approach Channel Which Permanently Closed Ten River Spans As A Result Of Modification Done In 1939 40 This Sediment Exclusion Mechanism Relies On Generation Of Secondary Currents To Exclude Coarser Sediments And To Allow Relatively Finer Sediments Into Right Bank Canals Although The Construction Of Right Bank Training Works Was Able To Control The Excessive Sediment Entry Into Right Bank Canals It Severely Curtailed The Flood Handling Capacity Of The Barrage From 1 5 Million Cusecs To 0 9 Million Cusecs With Increasing Incidence Of High Floods It Is Now Recognized That Without Taking Appropriate Measures For Increasing The Discharging Capacity Of Sukkur Barrage The Sustainability Of Agriculture In Sindh Province Shall Be At Stake To Overcome This Limitation Of The Barrage A Number Of Studies Were Carried Out Locally On Distorted Sand Models All Of These Studies Relied Upon On Modifying The Right Bank Training Works And Thereby Opening Up The Some Or All Of The Closed Spans Of The Barrage To Increase Its Discharging Capacity However The Impact Of Proposed Modifications Of Training Works On The Effectiveness Of Sediment Exclusion Mechanism Implemented In 1939 40 Is Not So Clear Before Implementation Of A Particular Solution The Government Of Sindh Intends To Ensure That The Chosen Solution Meets The Requirement Of Flood Capacity Does Not Impair But Improves Existing Sediment Exclusion Mechanism Improves The Flow Distribution In Various Barrage Compartments Minimizes Oblique Flow Vortices And Turbulence And Does Not Give Rise To Unacceptable Scour Or Shoal Formation For This Purpose The Government Of Sindh Now Wishes To Engage An Consultant Laboratory To Carry Out Independent Physical Model Testing Of Various Solutions And Give Its Recommendation For The Best Solution Which Should Be Implemented On Sukkur Barrage Rehabilitation And Improvement Project Appropriate Numerical Models Shall Also Be Used To Support The Implementation Of Physical Model And Interpret The Results The Reputed Laboratory Is Expected To Use Best International Standards For The Assignment Which Also Meet The Quality Assurance Requirement For This Large Undertaking Scope Of Assignment The Detailed Information Regarding The Project Problems To Be Addressed And The Detailed Terms Of Reference Tor For The Assignment Are Attached As Annex A To This Request For Expression Of Interest The Scope Of Assignment May Be Further Developed At The Request For Proposal Rfp Stage
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