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Article
Hydraulic Paramters Of Groundwater Aquifers In Khanaqin Basin

Author: Hussein Ilaibi Zamil Al-Sudani
Journal: Journal of Basrah Researches (Sciences) مجلة ابحاث البصرة ( العلميات) ISSN: 18172695 Year: 2017 Volume: 43 Issue: 2A Pages: 80-95
Publisher: Basrah University جامعة البصرة

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Abstract

ABSTRACT Estimating the physical properties of water-bearing layers is an essential part ofgroundwater studies. One of the most effective ways of determining these properties is toconduct and analyze aquifer tests. The aim of this research is to carry out hydrogeologicalinvestigation in Khanaqin basin within Diyala Governorate in the east of Iraq to calculatehydraulic parameters of the most important product groundwater aquifers. Cooper-Jacoband Theis Recovery test methods were used to calculate transmissivity and storagecoefficient after field investigation of aquifers extended in the basin. The geographicalposition, elevations, static water levels, depths, thicknesses and maximum yields werecarried out during field work. The results showed that Khanaqin basin has two geologicalunits represented by unconfined and confined aquifers, where (4) wells were used inpumping test. The average transmissivity parameter was ranged between (273-4590m2/day) in unconfined aquifer while this range was (14.47-244.35 m2/day) in confinedaquifer. Transmissivity contour map indicated increasing value of this parameter towardsnorthern west direction of the Khanaqin basin. Storage coefficient ranged between(3.5*10-5) to (1.14*10-3). The increasing of transmissivity parameter as groundwatermovement generally flow towards the northern west leading to increase groundwaterdischarge from wells penetrate unconfined and confined aquifers


Article
Groundwater System of Khanaqin Basin in Diyala Governorate – East of Iraq
نظام المياه الجوفية لحوض خانقين في محافظة ديالى- شرق العراق

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Abstract

Land and water resources are generally depleting due to rapid increase in population, urbanization and industrialization. The demand has increased tremendously for these resources; hence optimal utilization of them is essential for sustainable development. The study area is located in Diyala Governorate in the east of Iraq covering 1920 km2. The hydrogeological investigation of the basin divided groundwater aquifers into two main units, the unconfined and confined aquifers, where geographical position, elevations, static water levels, depths, thicknesses, maximum yields as well as water sampling and pumping tests have been carried out during these investigations. Quaternary deposits, Bai Hassan and Mukdadiyah formations reflect the unconfined aquifer while confined aquifer consists of Mukdadiyah and Injana formations. The promising zone of unconfined aquifer is located around Khanaqin city within the southern part of the basin, while two promising zones of confined aquifer are located to western part of the basin and near the border within north part of the basin.

الموارد المائية والاراضي بشكل عام في استنفاذ مستمر بسبب الزيادة السريعة في عدد السكان والتمدن والتصنيع بكافة اصنافه. ولقد زاد الطلب بصورة هائلة على هذه الموارد لذا فإن الاستفادة المثلى منها ضرورية للتنمية المستدامة. تقع منطقة الدراسة في محافظة ديالى في شرق العراق والتي تغطي مساحة 1920 كم2، وبينت التحريات الهيدروجيولوجية المنفذة في حوض خانقين بان مكامن المياه الجوفية مقسمة الى وحدتين رئيسيتين هما طبقات المياه الجوفية الحرة والمحصورة على التوالي، حيث اشتملت هذه التحريات على تحديد مواقع الابار ومناسيب المياه الجوفية وعمق وسمك المكامن الجوفية فضلاً عن التصريف البئري وعمليات الضخ الاختباري ونمذجة المياه الجوفية من الابار في المنطقة. يعكس المكمن المفتوح من ترسبات العصر الرباعي وتكويني باي حسن والمقدادية فيما تمثل تكوينات المقدادية وانجانة المكمن المحصور. بينت الخصائص الهيدروجيولوجية بان المنطقة الواعدة لاستثمار المياه الجوفية منها ضمن المكمن المفتوح تقع حول مدينة خانقين ضمن الجزء الجنوبي من الحوض، فيما تتواجد منطقتين واعدة لاستثمار المياه الجوفية من المكمن المحصور تقعان إلى الجزء الغربي من الحوض وقرب الحدود الدولية بين العراق وايران ضمن الجزء الشمالي من الحوض.

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