险情
7.However, thanks to large scale of bank reinforcement and rehabilitation of damaged projects in the middle and down stream of the Yangtze River, compared with 1998, the dangerous situations reduced by 7,750 or 82%, severe dangers reduced by 587, or 84%, among which, piping and foundation break decreased by 1,737 and 296 respectively, or 86% and 90%.
8.DESIGN AND ANALYTICAL APPLICATION STUDY OF WATER AND ICE RISK WARNING INFORMATION SYSTEM (WIRWIS) IN THE YELLOW RIVER DELTA AREA
9.Most of the exiting dams in our country are earth-rock dam and easy to be danger in the flood season.
10.Although the water levels on the middle reaches begun to recede, new dangers might occur as the dikes had long been submerged in water.

