Quantitative analysis and modeling of groundwater flow using visual MODFLOW: a case from subtropical coal mine, northwest Bangladesh

作     者：Khan, M. Selimul Hasnian Haque, Md. Emdadul Ahmed, Mohd. Mallick, Javed Islam, Abu Reza Md. Towfiqul Fattah, Md. Abdul 

作者机构：Begum Rokeya Univ Dept Disaster Management Rangpur 5400 Bangladesh King Khalid Univ Dept Civil Engn Coll Engn Abha Saudi Arabia Khulna Univ Engn & Technol Dept Urban & Reg Planning Khulna 9203 Bangladesh Daffodil Int Univ Dept Dev Studies Dhaka 1216 Bangladesh 

出 版 物：《ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY》 (Environ. Dev. Sustainability)

年 卷 期：2024年第26卷第5期

页      面：12971-12993页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：Deanship of Scientific Research [RGP2/363/44] King Khalid University, Ministry of Education, Kingdom of Saudi Arabia 

主　　题：Groundwater modeling Visual MODFLOW Water level Quantitative analysis Coal mining Trend analysis 

摘      要：Despite being a vital agricultural zone and livable land for millions of people, the northwest region of Bangladesh is facing a scarcity of groundwater, which has become a major environmental stress in recent years. To this end, the present study intends to evaluate the current groundwater condition and simulate it to predict groundwater flow in the Phulbari and Parbatipur upazilas in the Dinajpur district of subtropical coal mine, northwest Bangladesh, by applying the Visual MODFLOW model. Water table data was analyzed to assess the linear trends of groundwater levels. The exploration of coal mining influenced the groundwater resources in the study area, where the groundwater table declined at a rate of 0.142 m/year. During the last 35 years (1985-2020), the groundwater table decreased by 2.28 m at Parbatipur Upazila. In Phulbari Upazila, the water table has been declining at a rate of 0.201 m/year and has declined by 4.58 m over the last 35 years. The average recharge and discharge of 658,207.56 m(3)/day and 658,209.81 m(3)/day, respectively, indicate a deficit in recharge of 2.25 m(3)/day or 2250 L/day in the study area. The prediction results show that the shortage of groundwater will increase to 246,375,000 L annually by 2050. The progressive decline of the groundwater table is possibly due to a lack of replenishment, overexploitation of groundwater resources, and underground coal mining impacts. Overall, the study will help in policy planning for sustainable water resource management, waste supply, environmental protection and disaster preparedness.