how can there be repilsion forces between the nucleons?

/ It was very simple  answer/ In fact,nucleons  act
reciprocally  by the nuclear  field  which  consists of virtual п-mezons,really - 
nucleons  are surrounded  a mesonic  "fur coat". And  between  nucleons   operate  only
nuclear  forces(every  nucleon  has a constant  of strong  co-operations, which 
determines  the size  of nuclear  forces)  . Electric  charge    does not influence on
them. There is charge's independence of nuclear  forces. If we  examined  these  forces,
as  electromagnetic, protons would push off and  destroy  a nucleous.Nuclear forces in
one hundred times exceed electromagnetic forces  and  have short- active 
character