摘要
用比奥固结理论计算了水力冲填粉煤灰坝的施工固结过程,从机理上分析了工程中上坝速度的合理确定、坝基沉积灰对冲填坝固结的影响等问题。结果表明,坝下设置排水层可以大大加快坝体施工固结速度,平均上坝速度在0.3m/d以内,坝体施工安全有保障。
The consolidation process in construction of hydraulic filling fly ash dam is calculated and analyzed by using the Biot's consolidation theory,and some problems such as advisable confirming construction speed and influences coming from consolidation of hydraulic filling fly ash dam caused by sediment ash of dam foundation,etc,are analyzed by mechanism.The results show:setting drainage layer in the dam foundation can greatly expedite the consolidation speed of dam.In the case of average filling speed less than 0.3 m/d,the safety of dam can be secured.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2004年第11期138-142,共5页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家高技术发展计划项目(2001AA242071-02)
关键词
水力冲填
粉煤灰
坝体施工
固结特性
比奥理论
fly ash
hydraulic filling
characteristic of consolidation
dam construction
Biot's consolidation theory
