Well first of all this is chilld abuse and you need to take action to protect the children. This starts with getting yourself some support (church? counselor? therapist?). They can not only offer you emotional support but can be resourceful regarding measures you can take. ie. They can advise you on how to perhaps approach your spouse about seeking couples counseling or individual help. Even talking to your doctor will likely present you with some options. Whatever you do you need to help your children and yourself.