某山谷贮灰场坝体静动力分析
Static and Dynamic Analysis of Dam Body of a Valley Ash Storage Yard
王建军 1任迪 2谢定松3
作者信息
- 1. 中国能源建设集团山西省电力勘测设计院有限公司,山西 太原 030000
- 2. 山西国金电力有限公司,山西文水 032100
- 3. 中国水利水电科学研究院,北京 100048
- 折叠
摘要
燃煤发电的余灰一般都会堆放在灰场,随着堆灰高度的增加,灰场底部灰体和地基的应力会逐渐变大,部分灰体和地基土会进入塑性区域,且随着塑性区的加大会直接威胁到灰场的安全,因而高坝在安全方面的风险也随之加大,发生滑坡的可能性及滑坡造成的危害也会明显增加.根据规范要求,山谷干灰场最终贮灰高度超过100m时应作专题研究.以龙王庙灰场为例,开展了灰场坝体的有限元静动力分析,得出了各工况下坝体的应力场和位移场,确定了坝体动剪应力、水平加速度和相对位移的分布规律,对同类工程有一定的参考价值.
Abstract
The residual ash from coal-fired power generation is usually stored in the ash yard.With the increase of ash pile height,the stress of the ash body and the foundation at the bottom of the ash field will gradually increase,and part of the ash body and the foundation soil will enter the plastic zone,and the safety of the ash yard will be directly threatened with the increase of the plastic zone.Therefore,the safety risk of the high dam will also increase,and the possibility of landslides and the harm caused by landslide will also increase significantly.According to the code requirements,special research should be done when the final ash pile height of the valley dry ash field exceeds 100 meters.Taking the Longwangmiao Ash Field as an example,the finite element static and dynamic analysis of the dam body is carried out.The stress field and displacement field of the dam body under various working conditions are obtained,and the distribution law of the dynamic shear stress,horizontal acceleration and relative displace-ment of the dam body is determined,which has certain reference value for similar projects.
关键词
山谷灰场/坝体/应力应变/静力分析/动力分析Key words
valley ash yard/dam body/stress strain/static analysis/dynamic analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据