1, Yes....you can able to apply the visit visa for your family..
2, In Qatar most of the persons facing this problem... may be of some verification they are holding your documents after meet the captain you can able to get the rp in between you have to apply the visit visa for your family..
Requirements for applying Visa for wife:-
1, copy of personal id or passport of the resident husband
2, Letter from husband's employer citing profession and salary
3, copy of attested marriage & child birth certificate
4, copy of wife valid passport