Water Supply and Drainage Network Engineering

Author: He Chengda
Publisher:
Publishing Time: 2006-01-01
Features: Main Content This textbook is divided into two parts according to water supply and drainage. The first part is the water supply pipe network system, mainly including: planning and design of water supply pipe network engineering; hydraulic calculation of water supply pipe network system; technical and economic calculation of water supply pipe network; energy analysis and design of zoned water supply; materials and accessories of water supply pipe network; construction of pipelines and overview of pipe network maintenance management; operation scheduling and water quality control of water supply pipe network. The second part is the drainage pipe network system, mainly including: planning and design of drainage pipe network engineering; design and calculation of sewer pipe system; design and calculation of rainwater pipe channel; design and calculation of combined sewer pipe network; materials, joints, foundations, and structures of pipe channel systems in drainage pipe network; management and maintenance of drainage pipe channels. Examples of course design for water supply and drainage pipe networks are provided at the end of the book. This textbook is a teaching material for water supply and drainage majors in colleges and universities, and can also be used as a reference for engineering technicians engaged in related work. Preface to the Book Water supply and drainage pipe network engineering is a very important part of water supply and drainage engineering, and the required (construction) investment is also very large, generally accounting for 50% to 80% of the total investment of water supply and drainage engineering. At the same time, the pipe network system directly serves the public and is closely related to people's lives and production activities. If any part fails, it may have a great impact on people's lives, production, and security and fire protection. Therefore, it is undoubtedly very important to reasonably carry out the planning, design, construction, and operation management of water supply and drainage pipe network engineering, to ensure the safe and economic operation of the system, and to meet the needs of life and production. Based on the requirements of the "Teaching Guidance Committee for Water Supply and Drainage Majors in Colleges and Universities" for the curriculum settings of water supply and drainage majors, this book integrates the part of water supply pipe network engineering originally placed in "Water Supply Engineering" and the part of drainage pipe network engineering originally placed in "Drainage Engineering" into a teaching material for the undergraduate course "Water Supply and Drainage Pipe Network Engineering" in water supply and drainage majors. The writing style of this textbook is based on the requirement that students learn to design water supply and drainage pipe network engineering, while adding content such as regional water supply, regional discharge of tailwater, comprehensive layout of pipelines, and an overview of the construction of water supply and drainage pipe network engineering. Examples of course design for water supply and drainage pipe networks are also collected and organized in the appendix. The content can be selected and arranged according to the curriculum and teaching hours. The target audience is undergraduate students, and the purpose is to enable students to master the main steps of water supply and drainage engineering planning and design, to master the design theory and methods of water supply and drainage pipe network engineering, and to understand the maintenance management, construction organization, construction methods, and precautions of water supply and drainage pipe network engineering. The entire book is organized by Hohai University, Yangzhou University, and Southeast University. It is edited by Wang Hui as the chief editor and He Chengda as the deputy editor, and reviewed by Zhou Huicheng of Nanjing Tech University. Among them, the water supply section of Chapter 1 is written by Wang Hui of Hohai University, and the drainage section is written by He Chengda of Yangzhou University; Chapters 2, 6, and 7 are written by Wang Hui of Hohai University; Chapter 3 is written by Sun Min of Hohai University; Chapter 4 is written by Cong Haibing of Yangzhou University; Chapters 5 and 8 are written by Huang Zhenghua of Southeast University; Chapters 9, 12, and 14 are written by He Chengda of Yangzhou University; Chapters 10 and 13 are written by Yang Jinhu of Hohai University; Chapter 11 is written by Xue Chaoxia of Hohai University; the course design example of water supply pipe network is written by Gu Li and Huang Wei of Hohai University; and the course design of drainage pipe network is written by Chen Guangyuan of Yangzhou University and Xue Chaoxia of Hohai University. Due to the limitations of the compilers, there are inevitable shortcomings in the book. We sincerely welcome the readers' criticism and correction. Table of Contents 1 Water Supply and Drainage System Overview 1.1 Composition and Working Principle of Water Supply and Drainage System 1.1.1 Tasks of Water Supply and Drainage System 1.1.2 Composition and Function of Water Supply and Drainage System 1.1.3 Interrelationship of Flow Rate, Water Quality, and Pressure among Various Components of Water Supply and Drainage System 1.2 Composition and Types of Water Supply Pipe Network System 1.2.1 Composition of Water Supply Pipe Network System 1.2.2 Types of Water Supply Pipe Network System 1.2.3 Industrial Water Supply System 1.3 System Regime, Composition, and Layout Form of Drainage Pipe Network System 1.3.1 System Regime of Drainage Pipe Network System 1.3.2 Main Components of Drainage Pipe Network System 1.3.3 Layout Form of Drainage System 1.4 Comprehensive Planning of Pipelines The First Part: Water Supply Pipe Network System 2 Planning and Design of Water Supply Pipe Network Engineering 2.1 Planning and Design Program of Water Supply Engineering 2.1.1 Planning Work Program of Water Supply Engineering 2.1.2 Design Program of Water Supply Engineering 2.1.3 Relationship between Planning Work and Engineering Design 2.2 Network Layout 2.2.1 Principles of Network System Layout 2.2.2 Layout of Water Supply Pipes 2.2.3 Layout of Distribution Pipe Network 2.3 Overview of Regional Water Supply 2.3.1 Characteristics of Regional Water Supply 2.3.2 Steps of Regional Water Supply Planning 2.4 Water Consumption Calculation 2.4.1 Basis for Design Water Consumption of Water Supply System 2.4.2 Estimation of Water Consumption in Planning Period 2.4.3 Calculation of Maximum Daily Water Consumption in Engineering Design 2.4.4 Water Consumption Variation Curve and Design Flow Rate of Various Structures in the System 2.4.5 Water Pressure Relationship of Water Supply Pipe Network System 3 Hydraulic Calculation of Water Supply Pipe Network System 3.1 Network Graph and Simplification 3.1.1 Network Graph 3.1.2 Relationship between Tree Network and Loop Network 3.1.3 Network Graph Simplification 3.2 Basic Equations of Network Hydraulic Calculation 3.2.1 Node Equation (Continuity Equation) 3.2.2 Pressure Drop Equation 3.2.3 Energy Equation 3.3 Flow Rate of Network Hydraulic Calculation 3.3.1 Unit Flow Rate 3.3.2 Along-the-line Flow Rate 3.3.3 Node Flow Rate 3.3.4 Design Flow Rate Allocation of Network and Design Flow Rate of Pipe Section 3.4 Pipe Diameter Design 3.5 Head Loss Calculation 3.6 Hydraulic Calculation of Tree Network 3.7 Hydraulic Calculation of Loop Network 3.7.1 Loop Network Calculation Method 3.7.2 Loop Network Calculation 3.8 Hydraulic Calculation of Multi-source Network 3.9 Network Check 3.10 Calculation of Water Supply Pipe Channel 3.10.1 Basic Forms of Water Supply System 3.10.2 Gravity Water Supply Pipe Channel 3.10.3 Pressure Water Supply Pipe 3.11 Application of Computer to Solve Network Problems 4 Technical and Economic Calculation of Water Supply Pipe Network System 4.1 Network Cost Function 4.1.1 Composition of Network Cost Function 4.1.2 Network Cost Calculation 4.2 Objective Function of Network Optimization Design 4.2.1 Objective Function and Constraint Conditions 4.2.2 Discussion on Solving Objective Function 4.3 Technical and Economic Calculation of Water Supply Pipe 4.3.1 Technical and Economic Calculation of Pressure Water Supply Pipe 4.3.2 Technical and Economic Calculation of Gravity Water Supply Pipe 4.4 Technical and Economic Calculation of Loop Network 4.4.1 Approximate Optimization Allocation of Design Flow Rate of Pipe Section 4.4.2 Network with Undetermined Starting Water Pressure 4.4.3 Network with Given Starting Water Pressure 4.5 Approximate Optimization Calculation 5 Energy Analysis and Design of Zoned Water Supply 5.1 Technology and Energy Analysis of Zoned Water Supply 5.1.1 Overview of Zoned Water Supply System 5.1.2 Analysis of Technically Required Zoned Water Supply 5.1.3 Energy Analysis of Zoned Water Supply 5.1.4 Energy Analysis of Network Water Supply 5.2 Design of Zoned Water Supply System 6 Materials and Accessories of Water Supply Pipe Network System 6.1 Water Pipe Materials and Accessories 6.1.1 Pipe Materials 6.1.2 Water Supply Pipe Accessories 6.2 Network Accessories and Their Setting 6.2.1 Valves 6.2.2 Check Valves 6.2.3 Fire Hydrants 6.2.4 Air Relief Valves and Drain Valves 6.3 Network Regulation Structures and Ancillary Structures 6.3.1 Water Towers 6.3.2 Reservoirs 6.3.3 Inverted Siphons and Pipe Bridges 6.3.4 Valve Chambers 7 Construction of Pipes and Overview of Network Maintenance Management 7.1 Overview of Water Supply Pipe Construction 7.1.1 Pipe Transportation 7.1.2 Trenching 7.1.3 Drainage 7.1.4 Pipe Laying 7.1.5 Pipe Joints 7.1.6 Pipe Quality Inspection and Acceptance 7.2 Overview of Water Supply Network Maintenance Management 7.2.1 Network Technical Data Management 7.2.2 Determination and Leakage Detection of Water Pressure and Flow Rate of Water Supply Network 7.2.3 Pipe Corrosion Prevention 7.2.4 Repair of Network Leakage 8 Operation Scheduling and Water Quality Control of Water Supply Pipe Network System 8.1 Tasks and System Composition of Water Supply Network Operation Scheduling 8.1.1 Tasks of Water Supply Network Operation Scheduling 8.1.2 Composition of Water Supply Network Scheduling System 8.2 Water Supply Network Scheduling System 8.2.1 Structure of Water Supply Network Scheduling System 8.2.2 Real-time Network Database 8.2.3 Model Analysis 8.2.4 Characteristics of Water Supply Network Scheduling System 8.3 Water Consumption Forecast, Water Quality Safety Control 8.3.1 Water Consumption Forecast 8.3.2 Network Water Quality Safety and Water Quality Safety Control The Second Part: Drainage Pipe Network System 9 Planning and Design of Drainage Pipe Network Engineering 9.1 Content, Principles, and Methods of Drainage Engineering Planning 9.1.1 Content of Urban Drainage Engineering Planning 9.1.2 Principles of Urban Drainage Engineering Planning 9.1.3 Methods of Urban Drainage Engineering Planning 9.1.4 Relationship between Urban Drainage Engineering Planning and Urban Overall Planning 9.2 Construction Program and Design Stage of Drainage Engineering 9.2.1 Construction Program of Drainage Engineering 9.2.2 Design Stage of Drainage Engineering 9.3 Layout of Drainage Pipe Network System 9.3.1 Principles and Forms of Drainage Pipe Network Layout 9.3.2 Sewer Pipe Network Layout 9.3.3 Rainwater Pipe Channel Layout 9.4 Regional Drainage System 10 Design and Calculation of Sewer Pipe System 10.1 Determination of Design Data and Design Scheme 10.1.1 Design Data 10.1.2 Determination of Design Scheme 10.2 Design Flow Rate of Sewer Pipe System 10.2.1 Design Flow Rate of Domestic Sewage 10.2.2 Design Flow Rate of Industrial Wastewater 10.2.3 Infiltration of Groundwater 10.2.4 Design Total Flow Rate of Urban Sewage 10.3 Layout of Sewer Pipe System 10.3.1 Determination of Drainage Area Boundary and Division of Drainage Area 10.3.2 Alignment of Sewer Pipes 10.3.3 Determination of Control Points and Pump Station Locations 10.4 Design Parameters of Sewer Pipe System 10.4.1 Design Filling Degree 10.4.2 Design Velocity 10.4.3 Minimum Pipe Diameter 10.4.4 Minimum Design Slope 10.4.5 Burial Depth of Sewer Pipes 10.4.6 Connection of Sewer Pipes 10.5 Hydraulic Calculation of Sewer Pipe System 10.5.1 Analysis of Water Flow in Sewer Pipes 10.5.2 Basic Formulas of Hydraulic Calculation 10.5.3 Division of Design Pipe Sections and Determination of Design Flow Rate of Pipe Sections 10.5.4 Methods of Hydraulic Calculation of Sewer Pipes 10.5.5 Example of Hydraulic Calculation of Sewer Pipe System 10.6 Drawing of Sewer Pipe Plan and Longitudinal Profile 11 Design and Calculation of Rainwater Pipe Channel 11.1 Rainfall and Runoff 11.1.1 Hydrological Cycle 11.1.2 Rainfall Analysis Elements 11.1.3 Runoff 11.2 Design of Rainwater Pipe Channel System 11.2.1 Design Steps of Rainwater Pipe Channel System 11.2.2 Design Flow Rate of Rainwater Pipe Channel System 11.2.3 Hydraulic Calculation of Rainwater Pipe Channel System 11.2.4 Examples of Rainwater Pipe Channel Design and Calculation 11.3 Drainage of Interchange Roads 11.4 Design and Calculation of Drainage Ditches 11.4.1 Design Peak Flow Rate 11.4.2 Design Flood Control Standard 11.4.3 Key Points of Drainage Ditch Design 11.4.4 Hydraulic Calculation of Drainage Ditch 12 Design and Calculation of Combined Sewer Pipe Network System 12.1 Characteristics of Combined Sewer Pipe Network System 12.2 Design Flow Rate of Combined Sewer Pipe Network System 12.3 Key Points of Hydraulic Design of Combined Sewer Pipe Network System 12.4 Methods of Renovation of Old Combined Sewer Pipe Network 13 Materials, Joints, Foundations, and Structures of Pipe Channel System in Drainage Pipe Network System 13.1 Cross-section and Materials of Drainage Pipe Channel 13.1.1 Cross-section Forms of Drainage Pipe Channel 13.1.2 Commonly Used Pipe Channel Materials 13.1.3 Joints of Drainage Pipes 13.1.4 Foundations of Drainage Pipes 13.2 Structures on Drainage Pipe Channel System 13.2.1 Inspection Wells 13.2.2 Waterfall Wells 13.2.3 Water Seal Wells, Vent Wells 13.2.4 Rainwater Inlets 13.2.5 Inverted Siphons and Pipe Bridges 13.2.6 Overflow Wells, Jumping Wells 13.2.7 Cleaning Wells, Moisture-proof Doors 13.2.8 Outflow Wells 14 Management and Maintenance of Drainage Pipe Channel System 14.1 Tasks of Management and Maintenance of Drainage Pipe Channel System 14.2 Maintenance of Drainage Pipe Network 14.2.1 Drainage Network Cleaning 14.2.2 Repair of Drainage Network 14.3 Leakage Detection of Drainage Pipe Channel System Appendix Appendix A Examples of Network Course Design A1 Water Supply Pipe Network Course Design A2 Drainage Pipe Network Course Design 280 Appendix B Common Data and Calculation Charts B1 Urban Domestic Water Consumption Quota B2 Standards for Industrial Shower Water Consumption B3 Related Standards for Urban Firefighting Water Consumption B4 Hydraulic Calculation Chart of Reinforced Concrete Circular Pipe 298 References 305 This textbook is written based on the requirement that students learn to design water supply and drainage pipe network engineering, while adding content such as regional water supply, regional discharge of tailwater, comprehensive layout of pipelines, and an overview of the construction of water supply and drainage pipe network engineering.