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In the ground reinforcement area of Zhaogu No.1 mine, grouting well causes sudden sticking of adjacent directional drilling well, which is used as research object. We fully introduce the sticking accident process, causing reason of sticking accident, treatment process of sticking accident. Prevention and treatment methods are summarized. The lessons and experience from the occurrence and handling of the sticking accident provide an important reference for the prevention and treatment of sticking accident in similar accident.