Tuesday, 7 November 2023

Seasonal Ground Water Level Fluctuations on the Stability of the Rohingya Refugee Camp Hills of Ukhiya, Teknaf, Cox’s Bazar, Bangladesh—A Threat for Sustainable Development | Chapter 2 | Emerging Issues in Environment, Geography and Earth Science Vol. 3

 A risk drawing of the researched domain has been anticipated the local people in order to guarantee their safety, raise knowledge of the situation, and reassure them to retreat the area in the event of monsoonal slope collapses. This risk print is based on the security factor (Fs) at miscellaneous slope positions of the camp hills. Groundwater level is an sign of groundwater availability, groundwater flow and the physical traits of the groundwater system. Bangladesh is a on west side when facing north Asian Monsoonal Country and the recent rain pattern in the Cox's Bazar area of Bangladesh is changeful and increasing the number of monsoonal slope failures and landslip hazards in the Kutubpalong & Balukhali Rohingya camp area. An attempt has existed made to visualize the influence of seasonal alternative of ground water level (G.W.L.) fluctuations on the balance of the eco hills and thickets of Ukhiya Teknaf region. Ukhiya piles are in great hazard because of cutting wood from the hill slopes and it is traditional that due to current changes of climate, temporary rainfall for any consecutive days during tornado might show an influence on the determinant of safety (Fs) principles of the camp hill slopes. A clear G.W.L. alternative between dry and wet seasons has an influence on the stability (Fs) principles indicating that humidity has a strong influence on the balance and threatening tenable development. A stable or a little stable slope maybe unstable all the while raining and show a difference of ground water level (G.W.L.). The generation of pore water pressure (P.W.P.) is further influenced by migratory variations of ground ocean's surface. During wet season negative P.W.P. called assimilation plays an important role to happen slope failures in the Ukhiya piles. Based on all calculated determinant of safety principles (Fs) at different locations, four (4) exposed landslide risk zones are labeled. They are very high risk (Fs = 0.18 to 0.46), extreme risk (Fs = 0.56 to 0.75), medium risk (Fs = 0.76 to 1.0) and marginally fixed areas (Fs ≈1). Proper geo-architecture measures must be taken by the worried authorities to weaken P.W.P. during tornado by installing a pure liquid hydrogen and oxygen harvesting system, admitting sufficient seepage & other geotechnical measures to humiliate the risk of slope failures in the Ukhiya highlands. The established "Risk Maps" can be secondhand for future geological manufacturing works in addition to for sustainable preparation, design and construction purposes relating to modification and mitigation of landslip risks in the investigated region.

Author(s) Details:

Abu Taher Mohammad Shakhawat Hossain,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Sheikh Jafia Jafrin,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Purba Anindita Khan,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Mahmuda Khatun,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Tanmoy Dutta,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Mohammad Hasan Imam,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Ruma Bakali,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Mohammad Hossain Sayem,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Mohammad Shakil Mahabub,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.
 
Mohammad Emdadul Haque,
Geological Engineering, Geo-Hazards & Disaster Sciences Research Group, Department of Geological Sciences, Jahangirnagar University, Savar Union, Bangladesh.

Please see the link here: https://stm.bookpi.org/EIEGES-V3/article/view/12396

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