摘要
本文通过石门拱坝坝踵裂缝实测资料的分析,证明了坝踵存在裂缝的发展;借助基岩应力和坝基渗漏的变化过程,说明了裂缝局部存在于8~#～11~#坝体混凝土与基岩交界面,裂缝的季节性开合,使得坝基扬压力渗漏随之陡升,构成拱坝稳定的不利因素;提出了坝基未设帷幕坝段补设帷幕的可能性,加强坝踵裂缝的监测,为大坝安全运行提供必要的措施和依据.
The Shimen dam, located on the Baohe River in Hanzhong is a double curvature arch dam with a maximum height of 88m. The prototype foundation leakage, uplift and heel crack data observed from 1970 to 1987 have shown that the dam heel cracks are existing and developing from section 8 to section 11. The length of crack reaches 4m. These results provide data and basis requisite for safety operation of the dam.
出处
《陕西水力发电》
1992年第2期16-21,共6页
Journal of Shaanxi Water Power
关键词
拱坝
裂缝
扬压力
观测
Arch dam, Cracks of dam, Uplift pressure observation, Analysis
