Abstract: Aiming at the problem of abnormal water gushing in the mining process of Dananhu No.1 mine, taking 1303 working face of Dananhu No.1 mine as the research object, the failure evolution process of roof overburden in the mining process of working face is studied by means of similar simulation test to reveal the evolution characteristics of longitudinal trunk water-inrush crack and abnormal water-inrush law of working face. According to the research results, the corresponding control countermeasures are proposed to guarantee the prevention and control of abnormal water gush in the 1303 working face of Dananhu No.1 mine.