Coronation Street star Julia Goulding has revealed more details of the sinkhole drama coming up for the Platt family this week.Friday's hour-long episode (September 11) sees the Platts left stunned as a sinkhole opens up in their back garden, which leads to the property being deemed unsafe to live in.In a new chat with and other media, Julia – who plays Shona Platt – has now confirmed that her character will be closely involved in the surprising scenes.The drama kicks off when David Platt (Jack