The deployment of Wireless Sensor Network (WSNs) is widely used in monitoring applications. Depending on the entity to be monitored, sensor nodes are deployed in a two-dimension (2D) area or a three-dimension (3D) area. In addition, sensor nodes can be deployed either in a distributed way or their positions are precomputed by a central entity and they are placed at their positions using mobile robots. In this paper, we are interested in the deployment of WSN in a 3D-surface using autonomous and mobile nodes. Our goal is to ensure full 3D-surface coverage and maintain network connectivity. To reach our goal we propose 3D-DVFA-SC, a distributed deployment algorithm based on virtual forces strategy to move sensor nodes. Simulation results show that 3D-DVFA-SC provides a very good coverage rate while maintaining network connectivity.