> Will the new bitcoin-cash be available for mining and if yes, is it
> mined on new fork that will be submitted or on the previous code?

Yes, it will be available for mining, and you mine it the same way as you mine **BTC** and you need to do is direct your hash power to the pool which will be mining **BCC** after the split. 

**[ViaBTC][1]** provide such a pool for BCC mining and it is available now, https://pool.viabtc.com/pool/bcc/home/


  [1]: https://twitter.com/ViaBTC/status/888958580774154242