Integral model for the long-lived radioactive waste disposal using the “self-immersion” method

The presented integral model of radioactive waste disposal using the method of heat-generating capsule self-immersing into geologic rocks includes three stages: the stage of heating and the beginning of melting of the rock surrounding motionless capsule, the stage of quasi-stationary movement of the capsule, and the stage of the capsule deceleration. It is shown that as a result of capsule immersion into the melting rock the focusing of heat flow takes place, so that the capsule moving continues even at the heat rates significantly less than the critical value required for the start of melting. A possible radioactive waste composition and the immersion depth depending on burial environment were analyzed.