پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شماره‌ها | 628 |
| تعداد مقالات | 9,179 |
| تعداد مشاهده مقاله | 67,526,962 |
| تعداد دریافت فایل اصل مقاله | 8,061,674 |
Investigating the effect of initial values of lozenge and hydraulic gradient on the process of dissolution of gypsum located behind dams (Case study of Marash dam) | ||
| International Journal of Nonlinear Analysis and Applications | ||
| مقاله 13، دوره 15، شماره 6، شهریور 2024، صفحه 153-163 اصل مقاله (1.53 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2023.29997.4308 | ||
| نویسنده | ||
| Alireza Moazzami* | ||
| Department of Engineering, University of Zanjan, Zanjan, Iran | ||
| تاریخ دریافت: 01 بهمن 1401، تاریخ بازنگری: 22 اسفند 1401، تاریخ پذیرش: 07 فروردین 1402 | ||
| چکیده | ||
| In order to optimally design earthen dams, it is inevitable to know the characteristics of its construction, including geological and geotechnical characteristics, as well as awareness of behaviors such as permeability and bedrock permeability changes during water intake and long-term exploitation of the dam reservoir. When the stone bed of the dam construction consists of materials containing gypsum and anhydrite, then these materials will last longer against the continuation of anti-flow. In the study of Hazdar, the influence of the primary permeability values of the Sedang-Basdter of Merash Dam construction, which consists of joints containing gypsum and anhydrite, and hydraulic gradient values on the speed and process of the expansion of the joint, along with the dissolution rate of materials containing gypsum and anhydrite, has been investigated. The amount of expansion of each joint for the duration of a dam is calculated and considering the amount of hydraulic gradient drop in the body of the dam and manat with gypsum, the water loss rate of the dam is evaluated. The results obtained from the circulation test with the hydraulic gradient find that in the length of the water flow path, the rate of increase in the diameter of the joint decreases gradually. Also, along the length of the water flow, in the places where there is purer gypsum, the rate of increase in the diameter of the seams is higher than the rest. | ||
| کلیدواژه‌ها | ||
| dissolution؛ expansion of each joint؛ permeability؛ hydraulic gradient | ||
| مراجع | ||
|
[1] J. Bazargan and A.R. Moazzami, Investigation of the effect of hydraulic conditions on the dissolution process of gypsum in the wake of water structures, Nat. Conf. New Find. Civil Engin., _2009, pp. 45–62. [2] J. Bazargan and A.R. Moazzami, Investigation of water leakage from dams containing gypsum, anhydrite and snow and their improvement methods, Second Nat. Conf. Appl. Res. Water Resources Iran, 2018, pp. 32–40. [3] J. Bazargan and A.R. Moazzami, Investigation of the dissolution potential of gypsum behind reservoir and snow dams and their improvement methods, 6th Nat. Cong. Civil Engin. 2 (2011), 90–98. [4] M. Fabuss, A. Korozi, T.R. Middleton, and J.P. DeMonico, Office of Sline Water Rep., Contract No. 140-0001-1269, 1969. [5] M. Ghobadi, Factors controlling dissolution in carbonate rocks, Shahid Chamran Univer. Ahvaz Sci. J. 5 (1999), 26–40. [6] M. Ghobadi, Study of the phenomenon of dissolution of carbonate rocks in Khuzestan province, Nat. Res. Project No. 2009, Department of Geology, Shahid Chamran University, Ahvaz, 2016. [7] M. Ghobadi, Karst Engineering Geology, Hamadan Bo Ali University Publications, 2007. [8] M.H. Ghobadi and R. Kerami, The phenomenon of dissolution and the need to pay attention to the type of joint filling materials in the waterproofing of reservoir dams (case study), 6th Int. Civil Engin. Conf., Isfahan University of Technology, 2003, pp. 168–173. [9] A.N. James, Solution parameters of carbonate rocks, Bull. Engin. Geology Envir. 24 (1981), no. 1, 19–25. [10] A.N. James and A.R.R. Lupton, Gypsum and anhydrite in foundations of hydraulic structures, Geotechnique 28 (1978), no. 3, 249–272. [11] K.C. Zanbak and R.C. Arthur, Geochemical and engineering aspects of anhydrite-gypsum phase transitions, Bull. Assoc. Eng. Geol. 23 (1986), 419–433. | ||
|
آمار تعداد مشاهده مقاله: 18,421 تعداد دریافت فایل اصل مقاله: 156 |
||