Method for compensating defects of drilling stratified rock for thermal expansion stone cracking agents

The invention relates to a method for compensating defects of a drilling stratified rock for thermal expansion stone cracking agents, and belongs to the field of crossing of material science and an engineering technology. By the method, a gap between a kraft paper barrel and a drilling wall is filled with fine drift sand, and the thermal expansion stone cracking agents can be safely and effectively used in stratified rock drilling with gap defects. A paper barrel and drift sand composite compensating system is simple in structure, gaps of the stratified rock are blocked in a gas expansion initial stage of the thermal expansion stone cracking agents by mobility of the drift sand, expansion buffering of the thermal expansion stone cracking agents is implemented by a self compression effect of the drift sand, long-range acting is effectively converted into short-range acting, expansion energy of the thermal expansion stone cracking agents can be gathered effectively in an effective acting time, and acting loss caused by quick leakage of thermal expansion gas is avoided. The structural design is scientific and reasonable, and a stone cracking effect is high; and harm on human bodies and the environment is avoided, the method is clean, environment-friendly and pollution-free, the source of raw materials required for manufacturing of a device is wide, and the economic cost is low.