Underground Water Development in the Desert EGYPT 2015 Yeung Nam University CheongBo FTK CNB...
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Transcript of Underground Water Development in the Desert EGYPT 2015 Yeung Nam University CheongBo FTK CNB...
Underground Water Development in the Desert
EGYPT
2015
Yeung Nam UniversityCheongBo FTKCNB Resources
D&SBering
1. Development of Confined Water
A. Specifications 1. Finding Probability: 100% - 3 Dimensional Distribution of Ground Water - Shape, Position, Diameter and Depth of Water-containing Fractured Zone 2. Accuracy (Space Resolution): less than 0.5m 3. Minimum Number of Drilling Hole 4. Low Cost
B. Applications 1. Pipe Water 2. Bottled Water 3. Industrial and Agricultural Water 4. Resort (Golf, Water Park, Hot Spring, etc.)
C. Procedure of Water Development
(1) Surveying Methods 1. 1st Step: Surveying the ground water distribution Electrical Survey by the CT and Progressive Scanning (PCT, 2015) 2. 2nd Step: Surveying the Shape of Water Tank Electrical Survey by the Progressive Scanning (Korean Patent, 2015) 3. 3rd Step: Drilling-Point Determination Water-Containing Fractured Zone by the Accurate Magnetic Surveying Drilling Point: within 0.5x0.5m2 (Korean Patent, 2015)
(2) Well Developing Process 1. Ground Water Surveying (15-45 days) 2. Drilling (out-sourcing: <15 days) 3. Build-up the Well (2 days) 4. Test for Pumping-out Quantity & Water Quality (7 days)
2. References
Surveyed Results at the Hansung Country Club, Suwon city, Korea
Determine (1) Position of underground water tank(2) Shape, size, depth of the tank(3) Shape of the water-containing fractured zone(4) Drilling Process
Fractured Zone Water Reservoir
Fractured Zone
Location : -80~500 m
(1) Electrical Survey by the CT and Progressive Scanning (same as the theory of f-MRI in medicine)
Blue-low resistivityRed-high resistivity
Color Code
(2) Water-Containing Fractured Zone by the Accurate Magnetic Surveying Method
CT&
Progressive Scanning
AccurateMagneticSurvey
1. Acquired Data 24 kind of data 10 data/second 240 data/second for 1 hour: 60x60x240 = 864,000 data
2. Magnetic sensors in this system data aquisition time: < 0.1 m sec semiconductor GMR sensor 6 sensors: differential operating mode
Magnetic Specifications
center
24
1
Measuring Line
3. Practices
Hansung Golf Course, Suwon, Korea. 2014
7 17 8 18
20m
17 7 18 8
(1)Same
Position
position
Depth(m)
Blue-low resistivityRed-high resistivity
Color Code
17 7
Electrode(position)
6-8 11 14
Strength 1 2 3
Depth 100-200
100-140
60-130
(2)Inlet of
Reservoir Depth(m)
position
7 17
Blue-low resistivityRed-high resistivity
Color Code
7 178 1814
0404-1-1-3-4017 7818 0404-1-2-4-40
20m
(3) Confined
Water?
Blue-low resistivityRed-high resistivity
Color Code
18
8
position
Depth(m)
(4) Casing
& Grouting
8
Casing
Grouting
WaterPump
If Salty
(5) Capacity
ofReservoir Assumption:
capacity - 1,000 metric tons permeability: 0.1% homogeneous distribution of void, crack and vacant site reservoir shape: sphere
Volume of reservoir: 1,000 cubic meters / 0.1% = 106 cubic metersRadius of cube: R(4/3) (phi) cubic R = 106
R = 62.5 (m)
If cube: L = 100m
If 1,000 ton-sphere and 0.01% permeability,L = 135m.
(6)Hole Size
AndPump Power
Renewable Well – Monsoon region Nearby the River & LakeNonrenewable Well - Desert
A. Renewable Aquifer
Daily Supplying Capacity - depends on the daily supplying rate.
inlet areanumber of inlet
reservoir volume
the volume of fracture zone
Hole Size &
Pump Power
Depth of wellDaily supplying capacity (Tons/Day)
ElectricityPower Generator
Ground Surface
Reservoir
Inlet
Nonrenewable Well - Desert
B. Nonrenewable Aquifer
The Reservoir Volume
Hole Size &
Pump Power
Depth of WellDaily Supplying Capacity (Tons/Day)Operation Period (Well Life Time)
Total Supplying CapacityWater Quantity
fixed
volume of fracture zonepermeability
Ground Surface
Reservoir
NoInlet
(7)Member of
Drilling Team
1. Drill : operator/assistant2. Water tank: driver3. Compressor: operator4. Rod supplier-9m: driver5. Wasted water drain control6. Operating Guard-check the drill balancing
(8)Recharging Rate of Renewable Aquifer
Flux Density J
J = -D c
D – diffusitivityc – water concentration c – concentration gradient
Total Refilling Quantity
Q = J A H
J: flux density, H: refilling time A: area,
Recharging Rate of Renewable Aquifer
Area A
A = k ( / 2) R D
R – inlet distanceD- depth of the wellS= ( / 2) : solid angleK - constant
Diffusivity D(1)Kind of path (defects) joints, misfits, fracture, permeability(2) Path concentration geological structure materials defects stackings, etc
Semi Renewable AquiferNILERIVER
Nile River: Solid Angle S1 =
General source : S2 =
S1 << S2
QQ Analysis
After Drilling:Quantity Analysis for 3 days Recharging Rate water pump/ pipe Design
(9)Quantity/Quality Analysis
Quantity/Quality Analysis of water (QQ Analysis)
A. Duty 1. Check the QQ of intermediate layered water 2. Check the QQ of the main aquifer 3. Make the Design Source of water well: pump specification & location pipe specification
B. Member of QQ Team quarter of NDT (no of drilling team) 2 time of NWDT(no of well develop team)
Total Number of QQ Team: half of NDT
Thank You.