APPARATUS AND METHOD FOR REMOVING LOCAL EMISSION AND PRECIPITATED SAND OF UNDERGROUND WATER EXCAVATION WORK

摘要

PURPOSE: A device for removing precipitation soil and locally discharging underground water through an excavation hole and a method thereof are provided to greatly improve work efficiency by removing soil while minimizing physical impact of a vein of the underground water and improving turbidity of a work area. CONSTITUTION: A device for removing precipitation soil and locally discharging underground water through an excavation hole comprises a compressed air supply unit (10), ejectors (20,30), a constant pressure valve device (14), a discharge unit, and a storage unit. The ejector sprays compressed air supplied by the compressed air supply unit to the ground. The ejector sucks soil stacked on the bottom of the excavation hole and pumps the soil to the ground. The ejector includes an ejector including a venturi type passage and an ejector nozzle.