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مهنيو المياه والذين يحبون أن يقرءوا عن حلول سودانية فذة لم تجد التوثيق مدعوون للأطلاع علي ملحمة ال
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05:47 PM September, 16 2018 سودانيز اون لاين بروفيسور محمد الرشيد قريش- مكتبتى رابط مختصر مهنيو المياه والذين يحبون أن يقرءوا عن حلول سودانية فذة لم تجد التوثيق مدعوون للأطلاع علي ملحمة القاش (4 من 4) بقلم بروفيسور محمد الرشيد قريش
ترويض القاش : جدار الفيضان أم نهج المعالجة عند الحوض؟
Gash River Flood Mitigation Problems (Incomplete Draft of the Seminar)
Duration— A Four-Days Seminar: Location: One of Khartoum's Seminar Halls (Ample Time Notification Later)
مقدم السمنار بروفسير د. د. محمد الرشيد قريش
Who Should Attend: • وزارت الخارجية والري والزراعة والنقل والصناعة والبيئة • مراكز الدراسات الأستراتيجية و الجامعات ومراكز الأبحاث والمركز القومي للمعلوماتية • Planners and Engineers and Scientists and Municipal and Public Works Practitioners ( (إدارة الشؤن الهندسية • Building Constructors ( General Contractors and Special Trade Contractors) • Lawyers and Policy Makers and Technology Contracts Negotiators • Reviewers /Rehabilitators of Existing Works • Code Setters, to Use for Modifying and Updating Codes and Regulations • Testing and Materials Labs • Energy, Transportation and Environmental Planners • Industrial Facilities and Manufacturing Fabricators • Finance Agencies (Commercial Banks, Mortgage Agencies) • Insurance Companies (شركات التأمين) • Journalists
Seminar Contents
Duration—One Day: Module One: A Framework For Water Resources Development
Basic Components of the Water Resources Systems ➢ What are the Basic Components ➢ What Does Its Performance/Efficiency Depends on: What are the Objective of Sustainable Water Resource Development, as regards: ➢ System Efficiency ➢ Adverse Effects What Are the Four Broad, But Crucial, Questions that Must Be Addressed as Regards to: ➢ Planning ➢ Configuration ➢ Hydrology/Hydraulics ➢ Operation What are the Economic and Physical Goals and Criteria for Sustainable Water Resources Development What Are the National Purposes Risk Analysis: What are the Risks and Uncertainties In Hydraulic Structures: ➢ Project Political Risks At the Promotional Stage ➢ Project Economic/Financial/Commercial Risks ➢ Project Design Risks/Uncertainties ◊ Hydrologic Uncertainties, ◊ Structural Uncertainties ◊ Economic/Financial/Commercial Uncertainties ◊ Construction Risks ◊ Schedule Completion Uncertainties ◊ Operational Risk: ◊ Political Risks ◊ Failures ➢ Project Construction Risks ➢ Project Operational (O and M) Risks ➢ Project Monitoring Stage Risks ➢ Project Evaluation Stage Risks Hydraulic Studies and Analysis of Rivers ➢ Hydrologic vs. Hydraulic Design Performance Criteria For Hydraulic Structures
Duration—One Day: Module Two: The Problem of Controlling Water Passage Resulting From Floods and Storm Runoff Thru Drainage and Other Means ترويض السيول والفيضانات How to Predict --and Hence Protect Facilities and Their Occupants --from Storm Runoff ➢ The Hydrologic Problems ➢ The Altered Hydrologic/Hydraulic River Regimes The Role of Drainage In Reducing Peak Flows ذروة الفيضان and The Merits of Drainage Capacity Improvements Peak Flows (Floods ذروة الفيضان) Increases or Decreases at Various Scales (Levels), Viz.: ➢ Field (Farm or Small Watersheds) Level ➢ Soil Water Regime--the Role of Vegetative Cover : ➢ Land Use Changes: ➢ Channel Level ➢ Watershed (Regional) Level The Need for Drainage Surveys and Investigations Drainage Design ➢ The Two Traditional Two Approaches to Prevention of Flooding and Other Drainage-Related Problems: ➢ Flow Variability- • Inter-annual Variability of Streamflow • Intera-annual Variability of Floods • Estimation of Water Conveyance and Delivery Losses • Drainage/ Soil moisture Storage/Rise of Underground Water in Cultivated Land • Land Improvement/ Reclamation: • Uniformity of Water Application • Minimization of Soil Erosion • Minimization of Irrigation Water Runoff • Pedology (Soil Science): • Supply Conservation/ Rationalization Schemes • Improved Irrigation Systems and Practices
Duration—Two Days: Module Three: Problems with Gash
What Are the Pertinent Major Issues؟ ➢ Methods of Flood Control ➢ Channel Instability and Water Quality ➢ The Gash and Irrigation Works: • Gezira vs. Gash ➢ Highest Velocity and Max Depth at Concave Curves
➢ The Importance of Protecting Concave Banks and Beds Against Erosion At Bends ➢ (الهدام)Bank Sloughing ➢ Channel Control Works ➢ The Human Ecological Model ➢ Human Adjustments: Modifying The Physical System ➢ Human Adjustments: Modifying The Human System ➢ Gash Bank Failure Mechanism/Root Cause ➢ Erosion and Silt Control ➢ Is Dam an answer؟ Degradation vs. Scouring
Basin Approach ➢ Restoring River ➢ "Greenways”--Multi-Objective River Corridor Management ➢ Flow Contraction. ➢ أنظمة الحماية لدرء مخاطر الفيضان ➢ Probable Reasons for Why Spur Dikes Fail In Mission ؟ ➢ Why CHANNEL Cutting Did Not Happen؟—Chezy Formula ➢ Sediment Transport, Channel Changes and Chezy Formula ➢ Natural Cycle ◊ Alluvial rivers ◊ How Meandering Occurs ➢ Gash River Training: Merits and De-Merits ترويض القا ش! • River Hydraulics--Levees, Erosion and Silt Control • Consequences of River Confinement to Definite CHANNEL • Consequences of Flood Walls ◊ Merits of Levees (or Longitudinal Embankments) As Flood Protection Measures ◊ De-Merits of Levees As Flood Protection Measures ◊ Setback levees New Orleans Levee Failure Original Kassala Spur Systems and Banks ➢ فيضان خور بركة ➢ R and D ➢ Emergency Measures When Gash Bank is Breached
Duration—One Day Module Eleven التوصيات
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