When the Great Hanshin-Awaji Earthquake hit, some shield tunnels for telecommunication cable thrusted into vertical shafts, and water leakage occurred. Telecommunication cable tunnels, the most important facilities that have a large amount of cables in the urban area, should not get any damage that interrupt communication service by natural disasters such as earthquake. In this paper, we propose an estimation method and countermeasure against thrusting of a constructed shield tunnel. This estimation method uses vertical shaft's boring data, and this method is simple. This method is verified by the real damage of the Great Hanshin-Awaji Earthquake and the Great East Japan Earthquake. The countermeasure, on the other hand, is to install concrete base to drain pit, and it is economical and harmless to cable.