تحديد الأنطقة الجيوكهربائية و الطبقات المشبعة بالمياه الجوفية باستخدام طريقة المقاومة النوعية الكهربائية بين سامراء و الدور-وسط العراق

الملخص EN

In this paper, the Geoelectrical and saturated zones for the area between AL-Dour city and Samara city in the central of Iraq were determined and studied.

The data related to this area were survived by AL-Furat general company for studies and design for irrigation projects.

The electrical resistivity ( Shlumberger array ) survey includes two profiles contained ( 13 ) VES points.

The researcher draw the field curves and reinterpreted the data by use tow methods, qualitative ( curve type ) and quantitative by use partial matching ( auxiliary point method) interpretation methods.

In the first method three types of VES curves were recognized ( HKQ, QQ, KQ ).

While in the second method the thickness and the resistivity of the geoelectrical zones were computed.

By using the second method results, the geoelectrical sections were drawn; with the help of information of two wells in the area, the geological sections were drawn too.

As a result , four zones were determined under the surface( surface soil its resistivity between( 53-690 ) Ω.m, its thickness between (1-2.5 ) m,the unsaturated zone was classified into upper part its resistivity between (40-80 ) Ω.m and lower part its resistivity between (70-500 ) Ω.m, its total thickness between (6-18) m, saturated zone its resistivity between ( 7-15 ) Ω.m, its thickness between ( 39-72 ) m ,and the last zone was impermeable bed, its resistivity between (1.1-3.5) Ω.m, its thickness unknown.

The result of this work also show that the general direction of the ground water flow is toward the south east.

One may conclude that the saturated zone thickness in that area is different and the aquifer is of the unconfined type.