UPDATE 2-Soccer-Chelsea reach semis after thrilling 4-4 draw

* Chelsea survive thriller to reach last four again

* Liverpool comeback thwarted by Lampard double (adds quotes)

By Mike Collett

LONDON, April 14 (Reuters) - Chelsea reached the Champions League semi-finals for the fifth time in six seasons after a thrilling 4-4 draw with Liverpool put them through 7-5 on aggregate against their Premier League rivals on Tuesday.

Liverpool, trailing 3-1 from the first leg at Anfield and without injured captain Steven Gerrard, threatened to pull off a sensational comeback but ultimately failed in their quest to reach the last four and a meeting with Barcelona.

The 20th anniversary of the Hillsborough disaster on Wednesday added to the raw emotion and electrifying atmosphere at Stamford Bridge as Liverpool built a 2-0 lead, then trailed 3-2 before coming back to go 4-3 ahead with seven minutes left.

Chelsea, without suspended skipper John Terry, scored a late equaliser through Frank Lampard, his second goal of the game.

"We made it very hard for ourselves with our first half performance... but it was a great night, we are through. It's been a great tie," Lampard told ITV.

"I don't know what we did in the first half, we maybe approached the game in the wrong way, we thought we were almost through... but we showed our character at halftime to turn it round."