不同除险加固方案下病险水库渗流特性研究

Journal of Safety Science and Technology(2022)

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Abstract
为了给病险水库制定更加合理有效的除险加固方案.以某病险水库为研究对象,采用SEEP/W进行数值模拟,得出渗流量、出逸坡降、出逸流速、防渗墙底部渗透坡降,研究不同除险加固方案下水库的渗流特性.研究结果表明:未除险加固时,大坝渗流量、出逸坡降、出逸流速随着水位升高而增大;3种除险加固方案下,大坝渗流量、出逸坡降、出逸流速皆随着防渗墙深度的增大而降低,但防渗墙底部渗透坡降先降低后增大;大坝渗流量、出逸坡降、出逸流速相比加固前都显著降低,能满足控渗要求;值得注意的是,加固后防渗墙底部渗透坡降较大(0.429~2.17),应重点考虑.
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