摘要
大岗山水电站坝址具备修建高拱坝的优越地形条件，但坝址区地质构造复杂，岩脉、挤压破碎带、断层和节理裂隙发育，必须进行加固处理。利用ANSYS有限元分析软件，分别对大岗山拱坝坝肩天然地基和加固地基进行了数值分析。结果表明：天然地基条件下，超载安全系数为4．0～5．0，加固地基条件下，超载安全系数为5．0～6．0。说明加固方案能够有效提高坝体的稳定性和安全度，并且明显改善坝体应变及坝体的塑性变化范围，为工程设计和施工以及类似工程加固提供了科学依据。
The dam site of Dagangshan Hydropower Project is with the superior geographic advantage of building high arch dam.But the geological tectonics her is complicated.Dike, fractured zone because of extrusion, faults and joint fissures shall be reinforced.By appli-cation of ANSYS, the value analysis is respectively performed on the natural foundation and the reinforced foundation in abutment of the Dagangshan arch dam.The analysis shows that the safety factor is 4.0~5.0 in condition of the natural foundation;5.0~6.0 in condition of the reinforced foundation.This presents that the reinforcement scheme can effectively increase stability and safety of the dam body as well as obviously improve strain and plastic variation range of the dam body, providing design, construction and similar project reinforce-ment with reference.
出处
《西北水电》
2015年第2期44-47,共4页
Northwest Hydropower
关键词
大岗山水电站
坝肩稳定
天然地基
加固地基
加固效果
分析
Dagangshan Hydropower Station
abutment stability
natural foundation
reinforce foundation
reinforcing effect
analysis
