| 摘要 |
A repair system for repairing a water supply pipe is provided to change the flow direction of air smoothly, and to collect and to discharge impurities harmful to the human body such as dust, etc. in the air by cutting off one direction in case of repair and reinforcement works for the inside of a defective conduit, and to improve work efficiency by dividing a working section inside the conduit. A repair system for repairing a water supply pipe includes a tube type plug(110) inserted to an internal wall of a pipe having defects and expanded to form a working section, wherein the plug is made of a flexible material and formed to be expandable to seal up the inside of the conduit tightly, and provided with a housing space to house an expansion material such as harmless gas and compressive air. At repair and reinforcement works in the conduit, the plug cuts off a working section inside the conduit to make the flow of air for discharging harmful substances smoothly and to cut off the movement of harmful substances to other working sections. |
