Relief well tube

The utility relates to a relief well in dam protection engineering for river. The invention provide a relief well pipe comprising upper part riser pipe and lower strainer pipe provided with bar type slotted hole at pipe wall characterized in that: end of strainer pipe is connected with a pipe plug whose outer diameter is equivalent to pre-excavated boothole. The well pipe plug is provided with several through-holes; middle part keeps plug solid part whose diameter is larger than outer diameter of strainer pipe; the well pipe plug is made of plastic. The strainer pipe is provided with bar type slotted hole and has characteristics of rare jam and good drainage effect; the well pipe plug connected with the end of strainer pipe enables the well pipe to be easily positioned and mounted, Which guarantees well pipe in place and uniform filling when the filler is filled out of well pipe, and promotes well quality. The maintenance for well pipe is more easier and life time of relief well is prolonged.