بررسی فرونشست زمین ، مطالعه موردی:فرونشست زمین استخرهای تغذیه مصنوعی جنوب نیروگاه همدان ،شمالغرب ایران

نوع مقاله : مقاله پژوهشی

نویسنده

عضو هئیت علمی دانشگاه شهید بهشتی

چکیده

در این مقاله پدیده فرونشست زمین ، درز و شکاف های ایجاد شده در طرح تغذیه مصنوعی جنوب نیروگاه شهید مفتح همدان به صورت موردی تحقیق شده است. پدیده ایجاد شده در زمین شناسی وآب زیرزمینی نادر بوده که در این تحقیق مشخصات هندسی درز و شکافهای استخرهای تغذیه اندازه گیری شده است. لوگ های زمین شناسی موجود از محل بررسی و نتایج گویای وجود لایه های ریز دانه در ساختمان زمین شناسی آبخوان است که در اثر بهره برداری بی رویه آب زیرزمینی جابجا شده اند که ماسه دهی چاه های آب نیروگاه واطراف آن شاهدی بر اِین ادعا می باشد. در سایت تغذیه مصنوعی مورد بررسی این تحقیق تفاوت کیفیت آب تغذیه وآب آبخوان به ناپایداری وتحرک بیشتر رسوبات دانه ریزوجابجائی آنهاشدت بخشیده وافزون بر آن عدم رعایت خصوصیات هیدرولیک چاه های تغذیه باعث ایجاد جریان آشفته وجابجائی بیشتر رسوبات دانه ریز ودر نتیجه فرونشست زمین در استخرهای تغذیه شده است .

کلیدواژه‌ها


عنوان مقاله [English]

Land subsidence survey, Case study: Land subsidence of Artificial recharge Pools of Hamedan South Power Plant, Northwest of Iran.

چکیده [English]

In this article the phenomenon of land subsidence and the resulting cracks and fissures of artificial recharge plan of Hamedan Shahid Mofateh power generation as case study has been investigated. This is an unusual phenomenon and in this research the geometrical properties of the fissures of recharge ponds are measured. The results reveal the existence of fine layers in the geology of the aquifer, which are displaced in the long run as the consequence of groundwater overdraft. Sand making of some of the water wells around study area is proof of this claim. At the site of the artificial recharge subject of this research, the difference between the quality of recharge water and the aquifer and their interaction have intensified the instability and the movement of the fine sediments. In addition, the neglect of hydraulic principles of the groundwater during the construction and operation of the recharge wells has resulted in turbulent and speed flows, intensified displacement of fine sand and ultimately the localized subsidence at the site of the plan.

کلیدواژه‌ها [English]

  • land subsidence
  • artificial recharge
  • fine sediment
  • waters different qualify
1)       Amiri, M. 2003. The Relation Between Ghahavand –Famimini- Kbadarahang Plains Sinkholes with Bedrocks , Proceeding of The Third Iranian Engineering Geology and Environment Conference, 213-226(In Persian).
2)       Amiri, M. 2005. The role of CO 2 on inner karst formation in the Hamadan area , Proceeding of The Third Iranian Engineering Geology and Environment Conference, 213-226(In Persian).
3)       Arun, Yadav,Abhijit, Sonje,Priyanka Mathur, and D.A., Jain. 2012. A review on artificial groundwater recharge. International journal of pharm and bio science,3 (3), 304-311.
4)       Derakhshande, M., Valizade, R., and Fotovat, M. 1996. Report of Kabudarahang and Famenin area subsidence. Iran ministry of Power. (In Persian) .
5)       Foose,  R.M.  1953. Groundwater behavior in the Hershey,,,. Valley Pennsylvania .Geol. Soc Ammerica.Bull, 649, 623-645.
6)       Haydari, M., Khanlari, GH., and Bidokhti. 2003. A Study on Carbonates rock solution of Hamadan Power Generation. Proceeding of the third Iranian Engineering Geology and Environment Conference,189-212(In Persian).
7)       Bouwer,   H. 1977. Land subsidence and cracking due to groundwater depletion. Groundwater,Septamber-October ,Vol.15,No5,358-364.
8)       Bouwer,   H. 2002. Artificial recharge of groundwater. hydrogeology and engineering, Hydrogeology journal, (2002), 121-142.
9)       Huisman, L., and Olsthoon, T.N. 1982. artificial groundwater recharges. Published by pitman advanced publishing program,London. Translated into Persian by Abrahimi , 194-199.
10)   Khorsandi, A., and Abdali, M. 2009. Sinkhole formation hazards, Case study: Sinkholes hazard in Hamadan plain and Lar valley of Iran.  Proceeding of the 6th   Euregeo Congress, Munich, Germany, 359-362.
11)   Khorsandi, A., and Abdali, M. 2006. study of Hamadan plain subsidence with different perspective, case study: earth subsidence of artificial plan in south of powerplant. 10th Iranian Geological Society Conference, Tarbiat Modarres University(In Persian).
12)   Lewis, RW, Schrefler, B. 1978. Fully coupled consolidation model of subsidence of Venice. Water resources Res, 14(2), 223-230
13)   Mathewson, C.C. 1981. Engineering geology, Charles E. Merrill Pub. Co, 410.
14)   Pewe, Troy L., 1990. Land subsidence and earth fissure formation caused by groundwater withdrawal in Arizona, A review, 218-233
15)   Poland, JF., and Davis, GH. 1969. Land subsidence due to withdrawal of fluids in reviews in engineering geology. vol2.Geol Soc Am, Boulder, 187-269.
16)   Rostas, Voudouris. 2011.Artificial recharge via boreholes using treated wastewater:Possibilities and prospects. Water journal .3. 965-975.
17)   Saadati, Gh., and Mohamadi, P. 2003. The tectonical condition of Hamedan central plain  subsidence trench. Proceeding of the third Iranian Engineering Geology and Environment Conference, 286(Persian).
18)   Bhalerao, SA., and.Kelkar, TS. 2013.artificial recharge of groundwater: A novel technique for replenishment of an aquifer with water from land surface. International journal of geology, earth and environmental science .vol 3, 165-183.
19)   Waltman, A.C. 1989. Ground subsidence, Blackie, 202.
20)   White, W.B., and White, E. 1995. Thresholds for soil transport and the long stability of sinkholes.
21)   William, L. 1992.   Hydrogeological factor affecting new sinkholes development in the Orland area Florida Groundwater, Vol 30, No