APPLICATION OF TWO-DIMENSIONAL HYDRODYNAMIC MODEL (MIKE21HD/FM) TO ASSESSING THE IMPACT OF SAND MINING IN THE LO RIVER AREA AND PROPOSING MANAGEMENT SOLUTIONS

Tóm tắt

Phu Tho is a province with a developed mining industry, making an important contribution to economic development, creating jobs for people. In particular, the industry of exploiting sand as construction materials is also of interest to meet construction needs. However, the sand mining process impacts the environment, landscape and land area in the surrounding area. Therefore, research on application of twodimensional hydrodynamic model (MIKE21HD/FM) to evaluate the impacts on river banks due to Song Lo sand mining activities, the section through Phu My commune, Phu Ninh district, Phu Tho province is necessary. In particular, sand mining lowers the river bottom, potentially changing basic hydraulic parameters such as water level, flow velocity and flow direction. The results show that after dredging all areas to the design exploitation height, the water level fluctuates from 22.16m to 20.2m. Along the center line from T1 to T10, it can be seen that the water level fluctuates, lower about 0.01m (or 1cm). From there, propose environmental management measures in sand mining, ensuring sustainable economic development goals.