Permafrost region buried pipeline thaw collapse control method and device with combination of hot sticks and coarse-grained soil

The invention discloses a permafrost region buried pipeline thaw collapse control method and device with combination of hot sticks and coarse-grained soil and relates to the technical field of pipeline systems. The permafrost region buried pipeline thaw collapse control method is characterized in that silty clay with strong thaw collapse property around a buried pipeline (1) is replaced by the coarse-grained soil with weak thaw collapse frost heaving property, namely, a layer of pebbles (4) without sharp corner angles are paved on the bottom layer, and sand (3) in an inverted trapezoidal shape or sand bags filled with the sand (3) is or are paved above the pebbles (4) and around the buried pipeline (1). After filling replacement is completed, the hot sticks (5) are arranged on the two sides of the buried pipeline (1) vertically. The permafrost region buried pipeline thaw collapse control device is free of movement parts and maintenance and good in reliability, and does not consume electricity.