Method for repairing series leakage of coke oven under long coking time

The invention discloses a method for repairing serial leakage of a coke oven under long coking time, which comprises the following steps of: aiming at a coke oven carbonization chamber with serious serial leakage, blocking a vertical flame path corresponding to a serious serial leakage area of a to-be-repaired carbonization chamber, adjusting the opening degree of a gas port after coke is discharged from the to-be-repaired carbonization chamber, and regularly measuring the temperature of a horizontal row, so as to repair the serial leakage of the coke oven. The temperature of the vertical flame path corresponding to the serious serial leakage area is controlled to be 900-1050 DEG C; after coke is discharged from the to-be-repaired carbonization chamber, turning down flame at the furnace top until the environment temperature of the to-be-repaired carbonization chamber is reduced to 550-600 DEG C; after the environment temperature of the to-be-repaired carbonization chamber is reduced to 550-600 DEG C, opening