Dewatering And Groundwater Control
Dewatering And Groundwater Control
Chapter 1. Introduction
Purpose and scope
General
Construction dewatering
Permanent groundwater control
Chapter 2. Methodes for dewatering, pressure relief, and seepage cutoff
General
Types and source of seepage
Sumps and ditches
Wellpoint systems
Deep-well systems
Vertical sand drains
Electro-osmosis
Cutoffs
Summary of groundwater control methods
Selection of dewatering systems
Chapter 3. Geologic, soil, and groundwater investigations
General
Geologic and soil conditions
Groundwater characteristics
Permeability of pervious strata
Power
Surface water
Chapter 4. Design of dewatering, pressure relief, and groundwater control systems
Analysis of groundwater flow
Mathematical and model analyses
Flow-net analyses
Electrical analogy seepage models
Numerical analyses
Wellpoints, well and filters
Pumps, headers, and discharges pipes
Factors of safety
Dewatering open excavations
Dewatering shafts and tunnels
Permanent pressure relief systems
Freezimng
Control of surface water
Chapter 5. Installation of dewatering and groundwater control systems
General
Deep-well systems
Wellpoints systems
Vertical sand drains
Cutoffs
Piezometers
Chapter 6. Operation and performance control
General
Operation
Control and evaluation of performance
Chapter 7. Contract specifications
General
Types of specifications
Data to be included in specifications
Dewatering requirements and specifications
Measurement and payment
Examples of dewatering specifications
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