Water Storage in Spring Reservoir by Changing Spring
Water Storage in Spring Reservoir by Changing Spring Discharge Level İhsan TAŞKIN(1) Önder YAZICI(1) Müfit Şefik DOĞDU(2) (1) Retired from 13 th Regional Directorate of State Hydraulic Works (DSİ)-Antalya-TURKEY (2) General Directorate of State Hydraulic Works (DSİ)-Ankara-TURKEY
Water Storage in Spring Reservoir by Changing Spring Discharge Level Presentation Plan: Location and geological map of the area Spring classification Spring discharge usage for drinking & irrigation water Artificial dynamic reserve after barrier construction Spring discharge & groundwater level changing Changing in dynamic reserve of spring after barrier construction Advantages of the system Comparison of the structures
Location & geological map of the area 1/9
Spring Classification Springs have been evaluated according to the aquifer base (aquifer geometry) which is located below, same or above level of the spring discharge elevation. Same Below Above 2/9
Spring discharge usage for drinking & irrigation Spring is planned according to the minimum (and constant) spring discharge amount for drinking water purposes. Spring water is used for irrigation in between June & September. In other words, 2/3 of spring water is unused. 3/9
Artificial dynamic reserve after barrier construction & raising of the spring discharge elevation Artificial dynamic reserve Aquifer reservoir base is below discharge level In this type of aquifer artificial dynamic reserve is plentiful. 4/9
Natural Condition Spring After barrier construction, raising of the spring discharge elevation & lowering of the discharge level Barrier Water usage Aquifer reservoir base is below discharge level Aim of this system is storing of the water in the wet period and using of this stored water in the dry period. 5/9
Spring discharge & groundwater level changing are harmonize with each other. Average dynamic reserve changing per 1 m drawdown: Vs = 1. 987 x 106 m 3/m 6/9
Changing in dynamic reserve amount of spring after barrier construction & raising of the spring discharge elevation DV = Dh x Vs DV = 5. 05 x 106 m 3 Dh = 2. 54 m, Vs = 1. 987 x 106 m 3/m DV Dh Vs : changing in dynamic reserve of spring : changing in observation well’s water level : unit dynamic reserve changing per unit level changing 7/9
q q q Advantages of the system: Low construction cost Low construction time No need for nationalization purchase No evaporation loss Very low dissipation of the source (very low usage of natural construction materials & land use) q Useful for flood protection 8/9
Comparison of the structures Storage Type → Hacıbekar ↓ Criteria ↓ Pond Yelten Yeşilyayla Pond Sum of Ponds Kazanpınar Spring Filling Volume (m 3) 521000 411000 646000 1578000 6000 Concrete Volume (m 3) 1670 2500 2600 6770 5 Drilling Length (m) 2850 - 5500 8350 - 1230000 1420000 2640000 5290000 5050000 2. 4 3. 5 4. 1 3. 35 838 Storage Volume (m 3) Efficiency (Storage/Filling) 9/9
General Directorate of State Hydraulic Works (DSİ) Ankara - TURKEY Thank you for your attention…
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