The drunken monster who dragged a woman into a Bowery subway tunnel in a terrifying February sex attack is going to prison for at least 13 years.

Michael Torres, 29, had pleaded guilty to the attack, and was sentenced in Manhattan yesterday.

The 36-year-old victim had just left a J train and was using the escalator when Torres approached her from behind, putting her into a chokehold with his arm.

He then pulled her off the escalator, threw her to the ground, and dragged her to the end of a subway platform while holding a metal blade to her neck.

Torres then pushed her off the platform and dragged her to a secluded piece of track, where he sexually assaulted her, running off only when he heard the voices of nearby track workers.

“I’ll kill you,” he had told the petrified victim.

Torres was caught on surveillance video, and was arrested at the homeless shelter where he was living.

Prosecutors had asked for 15 years to life; under the sentence given by Manhattan Supreme Court Justice Carol Berkman a parole board can keep him imprisoned for the rest of his life.