No you cannot use a single stage snow blower on gravel.
With a single stage snow blower the blades of the snow blower make contact with the ground and when used on gravel the single stage snow blower will pick up the gravel rocks and throw them out of the snow blower.
That could cause damage to property such as broken windows and even injury to people around it or the person using the snow blower.
Do not use a single stage snow blower on gravel or you risk damage to yourself, property and also to the snow blower.
If you want to use a snow blower for a gravel driveway then you need a 2 stage or a 3 stage snow blower for the gravel driveway.
But a single stage snow blower will not work on gravel driveways or anything else that has gravel.