The thinking on establishing the system for preventing criminals escape in prisons;

When the tunnel passes through the upper proximity area with plenty of runoff sources,the three key links in construction must be held:conducting advance water probing,blocking up water grouting in the rich water area and establishing the disaster early warning and escape system,so as to ensure the safety in construction.

According to the arrangement of the State Flood Control and Drought Relief Headquarters, mountain flood prevention system was preliminarily built before the flood season of 2006 with the joint efforts of departments concerned, by applying the result of Studies on Mountain Flood Warning and Forecasting System Based on Distributed Hydrological Model that jointly comple.