Dewatering and Groundwater Control


Dewatering and groundwater control

File ; pdf, 5.0 MB, 158 pages

TOC

1. INTRODUCTION
Purpose and scope
Construction dewatering
Permanent groundwater control

2. METHODS FOR DEWATERING, PRESSURE RELIEF, AND SEEPAGE CUTOFF
Types and sources of seepage
Sumps and ditches
Wellpoint systems
Vertical sand drains
Electro-osmosis
Cutoffs
Summary of groundwater control methods
Selection of dewatering system

3. GEOLOGIC, SOIL, AND GROUNDWATER INVESTIGATIONS
Geologic and soil conditions
Groundwater characteristics
Permeability of pervious strats
Power
Surface water

4. DESIGN OF DEWATERING, PRESSURE RELIEF, AND GROUNDWATER CONTROL SYSTEMS
Analysis of groundwater flow
Mathematical and model analysis
Flow-net analysis
Electrical analogy seepage models
Numerical analysis
Wellpoints, wells, and filters
Pumps, headers, and discharge pipes
Factors of safety
Dewatering open excavations
Dewatering shafts and tunnels
Permanent pressure relief systems
Freezing
control of surface water

5. INSTALLATION OF DEWATERING AND GROUND WATER CONTROL SYSTEMS
Deep-well systems
Wellpoint systems
Vertical sand drains
Cutoffs
Piezometers

6. OPERATION AND PERFORMANCE CONTROL
Operation control and evaluation of performance

7. CONTRACT SPECIFICATIONS
Types of specifications
Data to be included in specifications
Measurement and payment
Examples of dewatering specifications

APP
A Reference and Bibiography
B Notations
C Field Pumping Tests
D Examples of design of dewatering nd pressure relief systems
E Transformation of anisotropic soil condition to isotropic soil conditions
F Examples of detailed dewatering specifications

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23 thoughts on “Dewatering and Groundwater Control

  1. Mustafa Shkukani

    i need to a drainage system for dewatering system during drilling shafts where the G.T at level of 3 m from the G.L and the invert level ranging between 9-15 m from G.L, the encountered material is silty sandy with gravels mixed with some clay, modrately cemented material, dense.
    the second line composed of silty clay, the shafts depth in this material ranges about 16.00 m

    i need your help to solve this problem so if anyone have a good solution dont hesitate to provide me.

    Looking to hearing from you.

    Reply
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  4. dodo

    I NEED THESE BOOK URGENT PLZ Construction Dewatering and Groundwater Control: New Methods and Applications

    Reply
  5. Gyasi Agyare

    I would like to conduct a research about ground water penetration, causes, effects to properties and health of occupants and immediate remedies to it.

    Reply
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    1. franco

      iam constructing 10 storey building, during the excavation i found too much water coming out, i tried to pump out but the flow is so high than you ever imagine. eventually it stopped me to continue with the work, now i am thinking what method i should use inorder to go on.

      looking to hear from you.

      Reply

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