克孜尔水库主坝右坝肩倾倒体结构稳定安全评价

克孜尔水库坝址区工程地质条件复杂,地震、断层活跃,主坝右坝肩倾倒体现已出现裂缝.经对结构稳定分析可知,主坝右坝肩倾倒体遭遇地震时稳定安全系数较小,安全性不能满足要求,出现滑坡的可能性较大,危险性较大.由于该倾倒体临近主坝,一旦出现大规模滑坡,可能会产生较大的涌浪,严重威胁大坝安全.应加强监测倾倒体的变形,必要时需进行工程加固处理.

Safety evaluation of structural stability for the dumping slope at the right abutment of Kizil reservoir main dam

Because of active earthquake and fault, the engineering geologic condition of Kizil reservoir dam is complexly. The dumping slope in the right abutment of main dam has cracks now. According to structural stability analysis, it is known that when earthquake happens, safety coefficient of structural stability of the dumping slope is a little small and its safety can not be ensured. Thus, the occurrence possibility of landslide is relatively great. The dumping slope is close to the main dam, therefore if a massive landslide happens, great waves that landslide results would threaten dam safety. Monitoring facilities should be increased for deformation measuring of the dumping slope, and rehabilitation measures should be taken if necessary.