Porosity and Nonporosity Cross-cylindrical tube with resin to form an underground water degradation process

摘要

The present invention relates to a drainage device for lowering the groundwater level in order to prevent the collapse of the excavation surface by the water flowing out of the ground during various foundation works such as trench work. The conventional well point method uses a plurality of steel pipes vertically buried at an excavation point, and the upper end of the water pipes exposed to the ground is pumped by a vacuum pump and forced to drain by contacting the header pipes laid on the ground. The lower portion of the intake pipe was drilled with a small hole, and the stainless steel was concentrically wrapped to form a screen, and the end of the intake pipe was attached to the well point by screwing, but the groundwater drainage treatment device was provided. ) Non-woven fabric is placed on the concentric circle of synthetic resin pipe with cross hole and hole, and anchor plate is attached to the end of water intake pipe. It is an excellent invention that can shorten the period and reduce the cost of construction.