Numerical simulation to the effect of applying rationing system on the stability of the Earth canal: Birmana canal in Iraq as a case study

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of the Mechanical Behavior of Materials Pub Date : 2022-01-01 DOI:10.1515/jmbm-2022-0216

Alaa Hu. Danoosh, M. Th. Al-Hadidi

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引用次数: 2

Abstract

Abstract Extreme conditions will cause the water level of high fill canal segment to change suddenly, which will affect the velocity and pore pressure of the slope. A 9 km irrigation earth canal in the city of Alsyahy, 15 km away from Al-Hilla city, and branching off from the left side of Shatt Al-Hilla at 57 km, was studied. The aim of this work is to study and analyze the effect of rationing system on the Birmana earthen canal during rapid drawdown case. Finite element modeling with Geo-Studio software was used in the present study to analyze the combined seepage and slope stability for three cycles. The resulting minimum safety factor obtained from the analysis using the saturated and unsaturated soil model was found to be 1.161, 1.142, 1.159, and 1.2 from the Janbu, Bishop, Morgenstern-Price, and Spencer methods, respectively. The factor of safety (FOS) values in three cycles are less than the required value. Finally, the FOC decreased by 66% from its value before the rationing system was applied, the area of canal and slip surface increased by 77 and 14%, respectively, due to the applied rationing system. These changes led to an irregular water distribution along the canal, in addition to a reduction in road width.

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配给制对土渠稳定性影响的数值模拟——以伊拉克Birmana运河为例

摘要极端条件会引起高填方渠段水位的突然变化，从而影响边坡的速度和孔隙压力。在阿尔希拉市15公里外的阿尔syahy市，研究了一条长9公里的灌溉土渠，该渠从阿尔希拉河左侧延伸至57公里处。本文的目的是研究和分析布尔玛纳土渠在快速落水情况下配给制对土渠的影响。本文采用Geo-Studio有限元建模软件，对三个周期的渗流和边坡稳定性进行了综合分析。采用饱和土和非饱和土模型进行分析得到的最小安全系数分别为1.161、1.142、1.159和1.2，分别采用Janbu、Bishop、Morgenstern-Price和Spencer方法。三个周期的安全系数(FOS)值均小于要求值。结果表明，配给制实施后，FOC比配给制实施前降低了66%，渠道面积和滑面面积分别增加了77%和14%。这些变化导致沿运河的水分布不规则，此外还减少了道路宽度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)

CiteScore

3.00

自引率

11.10%

发文量

审稿时长

30 weeks

期刊介绍： The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.