Based on analysis of origin, change trend, influence factors of Gumiubei crack in Kaiyang Phosphate Mine, the its prevention measures are put forward to ensure normal mining operation.

• 通过牯牛背裂隙的成因、变化趋势、影响因素及危害的分析，提出防范措施，以保证矿山开采秩序的正常进行。