The tunnel core drilling rig, along with a particular pump, is the main component of tunnel drilling equipment. The pump is the same with the one used above the ground. However, there is some special requirement for the tunnel core drilling rig. It consists of four parts: main machine, control platform, power unit and oil tank. The four are linked together through the flexible conduit.
To make the tunnel core drilling rig work, it has to dig a chamber. As for its size, it depends on. For some small drilling rigs, there is no necessity to excavate the chamber and the drilling rig itself can travel along the tunnel.