PROPULSION PIPE ADJUSTABLE EARTH AND SAND QUANTITY

摘要

A blast tube capable of controlling a soil amount comprises: a steel pipe blasted by being buried underground, and a soil amount controlling unit equipped inside the steel pipe; and providing a space wherein soil flowing through the steel pipe is piled up. The soil amount controlling unit comprises a piling container with a supporting film partitioning the space. The purpose of the present invention is to provide a blast tube capable of controlling the soil amount capable of preventing accidents, and blasting the steel pipe while stabilizing the ambient soil.