Deviational survey hole drill way protection device

The utility model belongs to the safety monitoring field specifically discloses a simple to operate and has protected the better deviational survey hole drill way protection device of effect. This deviational survey hole drill way protection device, including the cylindric safety cover and with the visor of the open -top adaptation of cylindric safety cover, still including being used for the cover to establish the annular median septum on the pore wall in deviational survey hole, the setting of annular median septum is on the inner wall of cylindric safety cover, the visor lid is located theopen -top department of cylindric safety cover and passes through the connecting piece together fixedly with annular median septum. Through setting up annular median septum on the inner wall at the cylindric safety cover, establish on the pore wall in deviational survey hole by annular mesophragma sleeve -board, can very convenient orifice location department of just installing this deviational survey hole drill way prote