...测压管水位；支持向量机；粒子群算法；单纯形法 [gap=1118]Key words：earth dam；parameter optimization；piezometric level；support vector machine；particle swarm optimization；simplex method ..
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... piezometric surface 水压面 ; 量压面 Piezometric Level 测压管水位 ; 测压水位 piezometric potential 测压的势能 ...
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... 测压管高程 piezometricelevation 测压管水标位 piezometric level 测压管水头线 piezometricheadline ...
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... 10-4-1 受限含水层 透水层又称含水层（aquifer），当含水层的上方及下方 土层均为不透水层，且其测压水位（piezometric level）高 于含水层顶部，此含水层称受限含水层（confined aquifer）。
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original piezometric level 原始测压水位
drawdown of piezometric level 水位压降
confined level piezometric level 承压水位
piezometric level abnormity 水位异常
piezometric tube level 测压管水位
piezometric U level 测压管水位
In view of complex nonlinear relationship between dam seepage parameters and piezometric tube level, the least squares support vector machine is applied to the back analysis of seepage parameters.
针对土石坝渗透参数和测压管水位间复杂的非线性关系，应用最小二乘支持向量机于土石坝渗透系数的反演。
The law of observed water level change in piezometric tube is analyzed in this paper. Furthermore, the stability of soil core wall dam on the unsteady seepage is studied.
分析了刘家峡黄土心墙坝测压管实测水位变化规律，研究了黄土心墙坝在非恒定渗流下的稳定性。
The piezometric head is also measured from the same datum level.
测压水头亦应从同一基准面算起。
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