How to ensure a harmonious coexistence between superficies and subsoil?

To ensure that everyone can exercise his rights in respect of the rights of the other, it is important to provide for all the servitudes that could be necessary to the harmonious coexistence of the two immovable properties. Thus, we can provide, for example, a right of way in favor of the superficiary allowing him to pass on the subsoil to access his immovable property.